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Note 1 - Significant Accounting Policies 1 (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Retained Earnings (Accumulated Deficit), Total $ (66,385,000) $ (66,312,000)  
Accounts Receivable, Allowance for Credit Loss, Ending Balance 7,000 7,000 $ 7,000
Contract with Customer, Liability, Total   2,457,000 $ 4,061,000
Share-Based Payment Arrangement, Noncash Expense, Total 530,000 469,000  
Cash, Uninsured Amount 20,100,000 7,700,000  
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) 0 0  
Goodwill and Intangible Asset Impairment, Total 0 0  
Goodwill 780,000 780,000  
Factoring Agreement, Gross Amount Factored $ 87,800,000 $ 37,300,000  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | US-based IT OEM Company [Member]      
Concentration Risk, Percentage 93.00% 51.00%  
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 $ 500,000  
Interest Expense [Member]      
Factoring Agreement, Finance Fees Paid $ 810,000 $ 177,000