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Note 4 - Financing Arrangements - Long-term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Long-term debt gross $ 7,265 $ 3,755
Debt issuance Costs (91) (132)
Total long-term debt 7,174 3,623
Current maturities of long-term debt (444) (444) [1]
Long-term debt - net of current maturities 6,730 3,179
Paycheck Protection Program CARES Act [Member]    
Long-term debt gross 6,077
Real Estate Term Note [Member]    
Long-term debt gross $ 1,188 $ 3,755
[1] The balance sheet at December 31, 2019 has been derived from the audited financial statements at that date