Annual report pursuant to Section 13 and 15(d)

Note 9 - Leases - Lease Assets and Liabilities (Details)

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Note 9 - Leases - Lease Assets and Liabilities (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Jan. 01, 2019
Operating Lease, Right-of-Use Asset $ 130,000 $ 395,000 $ 629,000
Accrued Liabilities [Member]      
Current operating lease liabilities 132,000 268,000  
Other Noncurrent Liabilities [Member]      
Noncurrent operating lease liabilities 132,000  
Accrued Liabilities and Other Noncurrent Liabilities [Member]      
Operating Lease, Liability, Total $ 132,000 $ 400,000 $ 629,000