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Note 1 - Significant Accounting Policies 1 (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retained Earnings (Accumulated Deficit), Ending Balance	$ (66,312,000)	$ (66,312,000)	$ (65,015,000)
Working Capital Deficit	310,000	310,000
Long-term Debt, Current Maturities, Total	2,023,000	2,023,000	0
Accounts Receivable, Allowance for Credit Loss, Ending Balance	7,000	7,000	7,000	$ 8,000
Share-based Payment Arrangement, Noncash Expense, Total	469,000		392,000
Cash, Uninsured Amount	7,700,000	7,700,000	18,700,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		0	0
Goodwill and Intangible Asset Impairment, Total		0	0
Goodwill, Ending Balance	$ 780,000	$ 780,000	780,000
Operating Loss, Carry forwards, Expiration Term (Year)		20 years
Factoring Agreement, Gross Amount Factored		$ 37,300,000	$ 56,600,000
Customer Concentration Risk [Member] | Accounts Receivable [Member] | US-based IT OEM Company [Member]
Concentration Risk, Percentage		51.00%	70.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Us-based Data Center [Member]
Concentration Risk, Percentage		29.00%
Selling, General and Administrative Expenses [Member]
Share-based Payment Arrangement, Noncash Expense, Total		$ 500,000	$ 400,000
Interest Expense [Member]
Factoring Agreement, Finance Fees Paid		$ 177,000	$ 329,000

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