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Note A - Overview and Significant Accounting Policies (Details Textual) $ in Millions		1 Months Ended	12 Months Ended
	Jan. 30, 2018 USD ($) shares	Jan. 30, 2018 USD ($) shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Number of Reportable Segments			3
Impairment, Long-Lived Asset, Held-for-Use, Total			$ 0.2	$ 0.8
Deductible For Individual Health Care Claims			0.3
Self Insurance Reserve			$ 1.2	$ 1.4
Software and Software Development Costs [Member]
Property, Plant and Equipment, Useful Life (Year)			5 years
Series A Preferred Stock [Member] | Wipro [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares	9,926
Convertible Preferred Stock, Shares Issued upon Conversion (in shares) | shares	1,001,614	1,001,614
Convertible Preferred Stock, Shares Issued upon Conversion as Percent of Common Stock Outstanding			14.00%
Stock Issued During Period, Value, New Issues	$ 9.9	$ 9.9
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Major Customers			1	1
Customer Concentration Risk [Member] | Accounts Receivable [Member] | One Customer [Member]
Concentration Risk, Percentage			14.60%	10.00%
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers			25	25
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | One Customer [Member]
Concentration Risk, Percentage			15.10%	11.20%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Twenty Five Customers [Member]
Concentration Risk, Percentage			72.60%	62.00%

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