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Note W - Subsequent Events (Details Textual) - USD ($)				12 Months Ended
	Mar. 11, 2022	Mar. 10, 2022	Mar. 08, 2022	Dec. 31, 2021	Dec. 31, 2020
Payments to Acquire Businesses, Gross				$ (0)	$ 2,000,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)				3 years
Subsequent Event [Member] | Restricted Stock [Member] | Share-based Payment Arrangement, Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	274,250
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Subsequent Event [Member] | Director [Member] | Common Stock [Member] | Stock Issued in Lieu of Board Fees [Member]
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture (in shares)		6,360
Subsequent Event [Member] | Director [Member] | Common Stock [Member] | Stock Issued in Lieu of Board Committee Fees [Member]
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture (in shares)	932	848
Subsequent Event [Member] | Swivel Secure Europe [Member]
Business Acquisition, Percentage of Voting Interests Acquired			100.00%
Business Combination, Consideration Transferred, Total			$ 1,750,000
Business Combination, Contingent Consideration, Liability, Total			500,000
Payments to Acquire Businesses, Gross			$ 1,270,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)			269,060
Business Combination, Indemnification Assets, Amount as of Acquisition Date			$ 89,687

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Number of shares of equity interests issued or issuable to acquire entity.

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