Document And Entity Information
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 2 - Summary of Significant Accounting Policies
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Note 3 - Accounts Receivable
Note 4 - Accrued Expenses
Note 5 - Income Taxes
Note 7 - Stock-based Awards
Note 10 - Leases
Note 2 - Summary of Significant Accounting Policies - Useful Lives (Details)
Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)
Income Tax Disclosure [Text Block]
Note 2 - Summary of Significant Accounting Policies - Summary of Stock Compensation Expense by Income Statement Account (Details)
Note 2 - Summary of Significant Accounting Policies - Basic and Diluted Weighted Average Common Shares Outstanding (Details)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Note 2 - Summary of Significant Accounting Policies - Share-Based Payment Arrangement, Cost by Plan (Details)
us-gaap_LiabilitiesCurrent
Total Current Liabilities
Note 3 - Accounts Receivable - Summary of the Allowance for Doubtful Accounts (Details)
Note 4 - Accrued Expenses - Summary of Accrued Expenses (Details)
Note 5 - Income Taxes - Summary of Income Tax Provision (Details)
Note 5 - Income Taxes - Reconciliation of Effective Rate with Federal Statutory Rate (Details)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)
Note 5 - Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Details)
Note 7 - Stock-based Awards - Summary of Shares Granted Under the 2006 Incentive Plan (Details)
Note 7 - Stock-based Awards - Stock Option Activity (Details)
Note 7 - Stock-based Awards - Nonvested Award Activity (Details)
Note 10 - Leases - Right-of-use Asset and Lease Liability (Details)
Note 10 - Leases - Components of Lease Expense (Details)
Note 10 - Leases - Maturities of Lease Liabilities (Details)
Notes To Financial Statements
us-gaap_LitigationSettlementAmountAwardedToOtherParty
Litigation Settlement, Amount Awarded to Other Party
Notes To Financial Statements [Abstract]
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
us-gaap_GainLossOnTerminationOfLease
Operating lease termination
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Forfeited, shares (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Outstanding & Unvested, shares (in shares)
Outstanding & Unvested, shares (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Equipment financing debt
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]
Exercisable, weighted average exercise price (in dollars per share)
Exercisable, weighted average remaining contractual life (Year)
Exercisable, aggregate intrinsic value
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value
Exercisable, shares (in shares)
pmd_LegalCostCapitalizedNet
Legal Cost Capitalized, Net
Represents the legal cost capitalized, net.
Outstanding, weighted average remaining contractual life (Year)
Customer Two [Member]
The second customer.
Outstanding, aggregate intrinsic value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
pmd_LegalCostCapitalizedAmortization
Legal Cost Capitalized, Amortization
Represents amortization related to legal cost capitalized.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Outstanding, weighted average exercise price (in dollars per share)
Outstanding, weighted average exercise price (in dollars per share)
Forfeited, weighted average exercise price (in dollars per share)
Canceled, weighted average exercise price (in dollars per share)
Accrued taxes
Options (or units) granted in period, weighted average fair value (in dollars per share)
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)
Accrued expenses
Total Accrued Expenses
Accrued legal settlement
Accounts payable
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Outstanding, shares (in shares)
Outstanding, shares (in shares)
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod
Canceled, shares (in shares)
Purchase of equipment through accounts payable and accrued liabilities
Accrued compensation and employee benefits
Credit Facility [Axis]
Credit Facility [Domain]
Other accrued expenses
us-gaap_PolicyTextBlockAbstract
Accounting Policies
Accrued vacation expense
Prepaid insurance financed through note payable
Equity issuance cost through accounts payable
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
us-gaap_PaymentsToDevelopSoftware
Cost of internally developed software
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost
Share-Based Payment Arrangement, Accelerated Cost
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedVestingNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Accelerated Vesting, Number (in shares)
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of property and equipment and leasehold improvements
Non-cash investing and financing activities:
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Share-Based Payment Arrangement, Tranche Three [Member]
Current Liabilities:
Vesting [Axis]
Vesting [Domain]
Share-Based Payment Arrangement, Tranche One [Member]
us-gaap_Assets
Total Assets
Supplemental disclosures of cash flow information:
Share-Based Payment Arrangement, Tranche Two [Member]
Patents [Member]
Preferred Stock [Text Block]
Plan Name [Axis]
Plan Name [Domain]
Compensation and Employee Benefit Plans [Text Block]
Tax withholding related to vested shares from employee stock plans
Amount of increase to equity for grantee's tax withholding obligation for award under share-based payment arrangement.
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
us-gaap_OperatingLeaseExpense
Operating Lease, Expense
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
Lessee, Operating Leases and Finance Leases [Text Block]
The entire disclosure of operating leases and finance leases.
us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
pmd_OperatingLossCarryforwardsSubjectToExpiration
Operating Loss Carryforwards, Subject to Expiration
The amount of operating loss carryforwards subject to expiration.
pmd_OperatingLossCarryforwardsNotSubjectToExpiration
Operating Loss Carryforwards, Not Subject to Expiration
The amount of operating loss carryforwards not subject to expiration.
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Assets by Major Class [Axis]
Share-Based Payment Arrangement [Text Block]
Finite-Lived Intangible Assets, Major Class Name [Domain]
us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
Tax withholding related to vested shares from employee stock plans
Enma Sagastume v. Psychemedics Corporation [Member]
Related to Enma Sagastume v. Psychemedics Corporation.
Award Type [Domain]
Award Date [Axis]
Award Date [Domain]
Net loss
Net loss and comprehensive loss
Award Type [Axis]
Settlements
Amount of expense related to nonoperating activities, classified as settlement.
Share-Based Payment Arrangement, Option [Member]
pmd_IncreaseDecreaseInAccruedExpensesAndAccruedIncomeTaxes
Accrued expenses
The increase (decrease) during the reporting period in the aggregate amount of expenses and income taxes incurred but not yet paid.
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Computer software
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
pmd_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedToCommonStockInPeriod
Converted to common stock, shares (in shares)
The number of equity-based payment instruments, excluding stock (or unit) options, that were converted to common stock during the reporting period.
pmd_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod
Cancelled, shares (in shares)
The number of equity-based payment instruments, excluding stock (or unit) options, that were cancelled during the reporting period.
pmd_PaymentsOfEquipmentFinancing
Payments on equipment debt financing
The cash outflow in relating to equity financing during the year.
pmd_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingAndNonvestedWeightedAverageExercisePrice
Outstanding & Unvested, weighted average grant-date fair value (in dollars per share)
Outstanding & Unvested, weighted average grant-date fair value (in dollars per share)
Weighted average price at which grantees can acquire the shares reserved for issuance under the equity instrument other than option.
pmd_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageExercisePrice
Granted, weighted average grant-date fair value (in dollars per share)
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of equity instrument other than option.
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Accumulated depreciation and amortization
Commitments and Contingencies Disclosure [Text Block]
us-gaap_PropertyPlantAndEquipmentNet
Total Property and Equipment, net
Property, Plant and Equipment, Net
Stock Unit Award [Member]
Related to stock unit awards.
pmd_NumberOfMajorCustomers
Number of Major Customers
Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.
us-gaap_PropertyPlantAndEquipmentGross
Total Property and equipment
Office furniture and equipment
Leasehold improvements
California Franchise Tax Board [Member]
Property and equipment:
Laboratory equipment
Carrying amount as of the balance sheet date of laboratory equipment held for productive use
pmd_LegalCostCapitalized
Legal Cost Capitalized
The amount of legal costs capitalized.
Customer One [Member]
Information related to customer one.
pmd_SoftwareDevelopmentCostCapitalized
Software Development Cost Capitalized
The software development cost capitalized as of the balance sheet date.
Schedule of Stock Based Compensation Expense [Table Text Block]
Cash flows from investing activities:
Laboratory Equipment [Member]
Information related to laboratory equipment.
Accrued shipping expense
Carrying value as of the balance sheet date of accrued shipping obligations.
Weighted average common shares outstanding
Provision for credit losses
Represents the provision for (recoveries of) doubtful accounts.
Basis of Presentation and Consolidation, Policy [Policy Text Block]
Disclosure of accounting policy for the basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). In addition, discloses the accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.
Permanent differences
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to permanent differences.
Provision for (benefit from) income taxes
Income Tax Provision
pmd_DeferredTaxLiabilitiesExcessOfTaxOverBookDepreciationAndAmortization
Excess of tax over book depreciation and amortization
Amount of deferred tax liability attributable to taxable temporary differences from excess of tax over book depreciation and amortization.
Line of Credit [Member]
Incentive Plan 2006 [Member]
Information related to the 2006 incentive plan.
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
Testing [Member]
Represents testing services.
Other Revenue [Member]
Represents other revenue sources not otherwise disclosed.
Stock Unit Awards [Member]
Information related to stock unit awards.
Converted to common stock, weighted average grant-date fair value (in dollars per share)
Weighted average price at which the instruments, excluding stock (or unit) options, that were converted to common stock during the reporting period
Forfeited, weighted average grant-date fair value (in dollars per share)
Weighted average price at which grantees could have acquired the underlying shares with respect to equity instrument other than stock options that were forfeited.
us-gaap_OperatingExpenses
Total Operating Expenses
Cancelled, weighted average grant-date fair value (in dollars per share)
Weighted average price at which grantees could have acquired the underlying shares with respect to equity instrument other than stock options that were cancelled.
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Month)
us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Defined Contribution Plan, Employer Discretionary Contribution Amount
General and administrative
us-gaap_CashEquivalentsAtCarryingValue
Cash Equivalents, at Carrying Value
Cash
Cash and Cash Equivalents, at Carrying Value
Equipment Loan Arrangement [Member]
Information related to the Equipment Loan Arrangement.
us-gaap_AllocatedShareBasedCompensationExpense
Total stock compensation
Banc of America Leasing and Capital [Member]
Informaiton related to an equipment financing agreement with Banc of America Leasing and Capital LLC.
Amendment Flag
dei_CityAreaCode
City Area Code
Use of Estimates, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Common Stock, Shares, Outstanding (in shares)
Common Stock, Shares, Outstanding
us-gaap_LongTermDebtWeightedAverageInterestRateOverTime
Long-Term Debt, Weighted Average Interest Rate, over Time
Preferred Stock, Shares Outstanding (in shares)
us-gaap_IncreaseDecreaseInOtherOperatingAssets
Other assets
Current Fiscal Year End Date
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
Variable lease costs
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
us-gaap_LeaseCost
Net lease cost
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other current assets
Weighted-average discount rate – operating lease
Document Fiscal Period Focus
Operating lease cost
Document Fiscal Year Focus
us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Deferred income taxes
Short-term lease rent expense
Lease, Cost [Table Text Block]
Finance lease assets obtained in exchange for finance lease liabilities
dei_DocumentPeriodEndDate
Document Period End Date
Right-of-use asset obtained in exchange for operating lease liabilities
Weighted-average remaining lease term – operating lease (in years) (Year)
dei_EntityFileNumber
Entity File Number
Entity Emerging Growth Company
dei_DocumentType
Document Type
Entity Small Business
dei_EntityShellCompany
Entity Shell Company
us-gaap_DividendsCommonStockCash
Cash dividends declared
Document Information [Line Items]
Document Information [Table]
dei_EntityPublicFloat
Entity Public Float
Entity Filer Category
Debt Instrument [Axis]
dei_EntityCurrentReportingStatus
Entity Current Reporting Status
Debt Instrument, Name [Domain]
dei_EntityVoluntaryFilers
Entity Voluntary Filers
dei_EntityWellKnownSeasonedIssuer
Entity Well-known Seasoned Issuer
Variable Rate [Domain]
us-gaap_IncreaseDecreaseInIncomeTaxesReceivable
Income tax receivable
Variable Rate [Axis]
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
Entity Tax Identification Number
Entity Central Index Key
us-gaap_DepreciationAndAmortization
Depreciation, Depletion and Amortization, Nonproduction
dei_EntityRegistrantName
Entity Registrant Name
us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition
Stock compensation expense
Entity [Domain]
Customer Concentration Risk [Member]
Legal Entity [Axis]
Entity Address, Address Line One
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Entity Address, City or Town
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Entity Address, Postal Zip Code
Entity Address, State or Province
Concentration Risk Type [Axis]
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
us-gaap_TreasuryStockValue
Less - Treasury stock, at cost, 668 shares
Operating lease liabilities
Amount of increase (decrease) in operating lease liabilities during the period.
Concentration Risk Type [Domain]
Material Terms of Trading Arrangement [Text Block]
us-gaap_StockRepurchasedDuringPeriodShares
Repurchase of common stock following reverse stock split, net of issuance costs (in shares)
Stock Repurchased During Period, Shares
dei_EntityCommonStockSharesOutstanding
Entity Common Stock, Shares Outstanding (in shares)
Trading Arrangements, by Individual [Table]
us-gaap_StockRepurchasedDuringPeriodValue
Repurchase of common stock following reverse stock split, net of issuance costs
Revenue Benchmark [Member]
Accounts Receivable [Member]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Risks and Uncertainties [Policy Text Block]
Disclosure of accounting policy for risks and uncertainties.
dei_LocalPhoneNumber
Local Phone Number
Other Assets [Policy Text Block]
Disclosure of accounting policy for other assets.
us-gaap_TableTextBlock
Notes Tables
us-gaap_GainLossOnDispositionOfIntangibleAssets
Loss on disposal of patents
Proceeds from issuance of stock, net of tax withholding
The net cash inflow or outflow resulting from the entity's issuance of stock, net of tax witholding.
Depreciation and amortization
Amount of depreciation and amortization expense, excluding amortization expense for right-of-use asset from operating lease.
Capitalized research expenses
Amount before allocation of valuation allowances of deferred tax asset attributable to capitalized research and development.
pmd_EquityOfferingMaximumOfferingAmount
Equity Offering, Maximum Offering Amount
Maximum value of company's equity authorized for issuance under equity offering.
Cash received on disposal of fully depreciated asset
Amount of cash inflow from disposal of a fully depreciated asset.
Shares issued – vested (in shares)
Shares issued – vested
pmd_EquityOfferingMaximumOfferingAmountShares
Equity Offering, Maximum Offering Amount, Shares
Maximum amount of company's shares authorized for issuance under equity offering.
Options (or units) granted in period (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Forfeited, shares (in shares)
Marketing and selling
Cash-out [Member]
Represents a cash-out.
September 21, 2023 [Member]
The date of September 21, 2023.
Line of Credit Facility, Lender [Domain]
Insurance Financing Note [Member]
Relating to the Insurance Financing Note.
Issuance of common stock, net of issuance costs (in shares)
Stock Issued During Period, Shares, New Issues
Foreign taxes, net of federal benefit
Lender Name [Axis]
us-gaap_LiabilitiesAndStockholdersEquity
Total Liabilities and Shareholders' Equity
Reverse Stock Split [Member]
Relating to a reverse stock split.
Issuance of common stock, net of issuance costs
Stock Issued During Period, Value, New Issues
UNITED STATES
Stock based compensation
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to equity-based compensation costs.
August 17, 2023 [Member]
The date August 17, 2023.
pmd_StockholdersEquityReverseStockSplitCashPerShareForRounding
Stockholders' Equity, Reverse Stock Split, Cash Per Share for Rounding
Represents the cash per share paid to round shares for the purpose of a reverse stock split.
Negotiations With Shipping Carrier [Member]
The shipping carrier negotiation member.
pmd_StockIssuedDuringPeriodSharesNewIssuesExcessOfRequiredAmount
Stock Issued During Period, Shares, New Issues, Excess of Required Amount
Number of new stock issued during the period in excess of the required amount.
Contingent Liability Reserve Estimate, Policy [Policy Text Block]
Accumulated deficit
Research and development
pmd_IncreaseDecreaseInCommonStockSharesOutstanding
Increase (Decrease) in Common Stock Shares Outstanding
The increase (decrease) in the number of shares of common stock outstanding over a period of time. Common stock represent the ownership interest in a corporation.
Accumulated other comprehensive loss
Working Capital [Member]
Relating to working capital.
pmd_ReductionInProceedsFromStockIssuanceFromExpectedAmount
Reduction in Proceeds from Stock Issuance from Expected Amount
The difference in the amount earned from issuance of stock from the expected amount.
Stock Purchase Agreement [Member]
Relating to a stock purchase agreement.
Debt Disclosure [Text Block]
us-gaap_InterestExpense
Interest Expense, Operating and Nonoperating
pmd_NumberOfCommonStockRecordHolders
Number of Common Stock Record Holders
The number of record holders of the company's common stock.
us-gaap_InterestExpenseDebt
Interest Expense, Debt
Changes in operating assets and liabilities:
Federal R&D Credits
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to a federal research tax credit.
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
State R&D Credits
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to a state research tax credit.
Long-term portion of operating lease liabilities
us-gaap_OperatingLeaseLiabilityNoncurrent
Operating lease liabilities
us-gaap_OperatingLeaseLiability
Operating lease liability
Current portion of operating lease liabilities
Financing lease liability
Current portion of finance lease liability
Vice President of Finance [Member]
Represents the Vice President of Finance.
Long-term portion of financing leases liability
Long-term portion of finance lease liability
January 22, 2024 [Member]
Represents January 22, 2024.
Operating lease right-of-use-asset
Operating lease right-of-use assets, net
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total, operating leases
us-gaap_FinanceLeasePrincipalPayments
Principle payment of finance lease liability
pmd_FinanceLeaseCost
Financing lease cost
Amount of finance lease cost recognized by lessee for lease contract.
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less present value discount, operating leases
Finance lease liabilities
us-gaap_FinanceLeaseLiability
us-gaap_DeferredIncomeTaxExpenseBenefit
Total Deferred
pmd_TotalOperatingLeaseCost
Total operating lease cost
Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, variable lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Finite-Lived Intangible Asset, Expected Amortization, after Year Five
Right-of-use Asset and Lease Liability [Table Text Block]
Tabular disclosure for right-of-use asset and lease liability.
pmd_LeaseRightofUseAsset
Lease, Right-of-Use Asset
Amount of lessee's right to use underlying asset under lease.
Financing lease right-of-use-asset
Finance lease right-of-use asset, net
pmd_LeaseLiability
Lease, Liability
Present value of lessee's discounted obligation for lease payments.
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Finite-Lived Intangible Asset, Expected Amortization, Year Two
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Finite-Lived Intangible Asset, Expected Amortization, Year Three
Fair Value of Financial Instruments, Policy [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Finite-Lived Intangible Asset, Expected Amortization, Year Four
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Finite-Lived Intangible Asset, Expected Amortization, Year Five
Lessee, Operating and Financing Lease Liability Maturity [Table Text Block]
Lessee, Operating and Financing Lease Liability Maturity [Table Text Block]
Segment Reporting, Policy [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Finite-Lived Intangible Asset, Expected Amortization, Year One
Year Ending December 31, 2025, operating leases
Year Ending December 31, 2026, operating leases
Year Ending December 31, 2027, operating leases
Other assets
Stock compensation expense
Lessee, Leases [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetUsefulLife
Finite-Lived Intangible Asset, Useful Life
Financing cash flows - financing leases
Amount of cash outflow from financing lease.
Earnings Per Share, Policy [Policy Text Block]
Stock Purchase Agreement Excess Shares [Member]
Represents excess shares from the Stock Purchase Agreement.
pmd_StockRepurchasedCostPerShare
Stock Repurchased, Cost Per Share (in dollars per share)
Per share or per unit amount of equity securities repurchased.
us-gaap_AdjustmentForAmortization
Amortization
Operating Expenses:
Income Tax, Policy [Policy Text Block]
Share Based Compensation Award, Tranche One, Vesting on the One Year Anniversary [Member]
First portion of award under share-based payment arrangement differentiated by vesting feature, including, but not limited to, performance measure or service period which vests on the one year anniversary.
Research, Development, and Computer Software, Policy [Policy Text Block]
Research and Development Expense, Policy [Policy Text Block]
Share Based Compensation Award, Tranche One, Vesting on the Two Year Anniversary [Member]
First portion of award under share-based payment arrangement differentiated by vesting feature, including, but not limited to, performance measure or service period which vests on the two year anniversary.
us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Stockholders' Equity Note, Stock Split, Conversion Ratio
us-gaap_ConversionOfStockAmountIssued1
Conversion of Stock, Amount Issued
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
us-gaap_AssetsCurrent
Total Current Assets
Share-Based Payment Arrangement [Policy Text Block]
Income tax receivable
Treasury Stock, Common, Shares (in shares)
Balance (in shares)
Balance (in shares)
Common stock, $0.005 par value; 50,000 shares authorized, 6,778 shares and 6,474 shares issued at December 31, 2024 and 2023, respectively, 6,110 shares outstanding and 5,806 shares outstanding at December 31, 2024 and 2023, respectively
us-gaap_InterestIncomeOther
Interest Income, Other
Adjustments to reconcile net loss to net cash provided by operating activities:
Common Stock, Shares Authorized (in shares)
Common Stock, Shares, Issued (in shares)
Common Stock, Par or Stated Value Per Share (in dollars per share)
us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Valuation Allowance
Valuation Allowance
Statistical Measurement [Domain]
Operating cash flows - operating lease
Maximum [Member]
Minimum [Member]
Chief Executive Officer and President [Member]
Represents chief executive officer and president.
Product and Service [Axis]
us-gaap_PaymentsForLegalSettlements
Payments for Legal Settlements
Product and Service [Domain]
us-gaap_DeferredTaxAssetsNet
Deferred Tax Assets After Valuation Allowance
Statistical Measurement [Axis]
Litigation Case [Axis]
Litigation Case [Domain]
London Interbank Offered Rate [Member]
Relating to the London Interbank Offered Rate.
Preferred stock, $0.005 par value, 873 shares authorized, no shares issued or outstanding
us-gaap_DeferredTaxAssetsLiabilitiesNet
Net Deferred Tax Assets
Preferred Stock, Shares Issued (in shares)
Cash paid for interest
Geographical [Axis]
Geographical [Domain]
us-gaap_DeferredTaxAssetsGross
Deferred Tax Assets, Gross
Gross Deferred Tax Assets
Property, Plant and Equipment [Table Text Block]
Preferred Stock, Shares Authorized (in shares)
us-gaap_DeferredIncomeTaxLiabilities
Deferred Tax Liabilities, Gross
Gross Deferred Tax Liabilities
Preferred Stock, Par or Stated Value Per Share (in dollars per share)
Revenues
R&D tax credits
Customer [Axis]
Customer [Domain]
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
Accrued expenses
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant and Equipment, Useful Life (Year)
Cash flows from operating activities:
Allowance for credit losses
Revenue [Policy Text Block]
Statement [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current
Balance
Balance
Accounts receivable, net of allowance for credit losses of $37 and $64
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Stock-based compensation
Additional paid-in capital
AOCI Attributable to Parent [Member]
Shareholders' Equity:
Property, Plant and Equipment, Policy [Policy Text Block]
Other expense
us-gaap_NonoperatingIncomeExpense
Total Other Expense
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset [Domain]
Segment Reporting Disclosure [Text Block]
NOL carryforward
Other Expense:
Current Assets:
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash, beginning of year
Cash, end of year
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase (decrease) in cash
us-gaap_Liabilities
Total Liabilities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash used in financing activities
Commitments and Contingencies
Sale of Stock [Axis]
Sale of Stock [Domain]
us-gaap_OperatingIncomeLoss
Operating Loss
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
Prepaid expenses and other current assets
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_GrossProfit
Gross profit
Cost of revenues
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Major Customers, Policy [Policy Text Block]
us-gaap_DeferredTaxLiabilitiesPrepaidExpenses
Prepaid expenses
us-gaap_PaymentsOfDividendsCommonStock
Cash dividends paid
Other Income and Other Expense Disclosure [Text Block]
us-gaap_PaymentsForRepurchaseOfCommonStock
Repurchase of common stock following reverse stock split
Scenario [Domain]
Retained Earnings [Member]
Issuance of common stock, net of issuance costs
us-gaap_ProceedsFromIssuanceOfCommonStock
State
Title and Position [Domain]
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State
Title and Position [Axis]
Treasury Stock, Common [Member]
Scenario [Axis]
us-gaap_CurrentForeignTaxExpenseBenefit
Total Current
Additional Paid-in Capital [Member]
Common Stock [Member]
Federal
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
Equity Components [Axis]
Equity Component [Domain]
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Net loss before provision for (benefit from) income taxes
dei_IcfrAuditorAttestationFlag
ICFR Auditor Attestation Flag
State and Local Jurisdiction [Member]
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Internal Revenue Service (IRS) [Member]
Income Tax Jurisdiction [Axis]
Capitalized Software and Equipment [Member]
Information related to capitalized software and equipment.
Income Tax Jurisdiction [Domain]
Disaggregation of Revenue [Table Text Block]
Domestic Tax Jurisdiction [Member]
Office Equipment [Member]
us-gaap_RepaymentsOfLongTermDebt
Repayments of Long-Term Debt
Document Annual Report
Cash and Cash Equivalents, Policy [Policy Text Block]
Software Development [Member]
Entity Incorporation, State or Country Code
General and Administrative Expense [Member]
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
Document Transition Report
dei_DocumentFinStmtErrorCorrectionFlag
Document Financial Statement Error Correction [Flag]
us-gaap_ShortTermBorrowings
Short-Term Debt
dei_EntityInteractiveDataCurrent
Entity Interactive Data Current
Selling and Marketing Expense [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)
Insurance note payable
us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Write-offs
us-gaap_ProceedsFromIssuanceOfLongTermDebt
Proceeds from Issuance of Long-Term Debt
Shipping/Collection (Hair) [Member]
Information pertaining to shipping and hair collection services.
Cost of Sales [Member]
Chief Revenue Officer [Member]
Relating to the Chief Revenue Officer.
Research and Development Expense [Member]
Statement of Income Location, Balance [Axis]
Statement of Income Location, Balance [Domain]
Nonmonetary Transaction Type [Domain]
Nonmonetary Transaction Type [Axis]
dei_AuditorName
Auditor Name
Difference in tax rate for carryback claim
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in tax rate for carryback claim.
dei_AuditorFirmId
Auditor Firm ID
dei_AuditorLocation
Auditor Location
Dilutive common equivalent shares (in shares)
us-gaap_TaxCreditCarryforwardAmount
Tax Credit Carryforward, Amount
us-gaap_RepaymentsOfNotesPayable
Payments on insurance note payable
us-gaap_SharePrice
Share Price
Options (in shares)
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Diluted (in shares)
Weighted average common shares outstanding, assuming dilution (in shares)
Non-US [Member]
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
Statement [Table]
Statement of Financial Position [Abstract]
Basic (in shares)
Weighted average common shares outstanding, basic (in shares)
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective tax rate
Basic and diluted net loss per share (in dollars per share)
Credit Loss, Financial Instrument [Policy Text Block]
Increase/(decrease) in valuation reserve
Statement of Cash Flows [Abstract]
pmd_SettlementExpense
Settlement Expense
The amount of settlement expense.
Statement of Stockholders' Equity [Abstract]
Income Statement [Abstract]
Schedule of Accrued Liabilities [Table Text Block]
Financing Receivable, Current, Allowance for Credit Loss [Table Text Block]
pmd_DeferredTaxLiabilitiesOperatingLease
Operating lease
Amount of deferred tax consequences attributable to taxable temporary differences derived from operating lease.
pmd_DeferredTaxAssetsOperatingLease
Operating lease
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from operating lease.
Interest on lease liabilities
us-gaap_FinanceLeaseLiabilityPaymentsDue
Total, finance leases
Amortization of leased assets
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount
Less present value discount, finance leases
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Year Ending December 31, 2025, finance leases
Year Ending December 31, 2026, finance leases
Year Ending December 31, 2027, finance leases
Weighted-average discount rate – financing leases
State income taxes, net of federal benefit
Weighted-average remaining lease term – financing leases (in years) (Year)
Cash flows from financing activities:
Federal statutory rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
us-gaap_StockholdersEquity
Total Shareholders' Equity
Balance
Balance
Right-of-use asset amortization
pmd_PaymentsForProceedsFromOtherAssets
Purchases of other assets
The net cash outflow or inflow from other assets.
Class of Stock [Axis]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]