Note 9 - Debt and Credit Agreements - Outstanding Debt Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Long-term Debt, Total	$ 10,787	$ 342
Less: Current portion	(1,406)	(12,917)
Long-term debt, net of current maturities	9,381	505
Line of Credit [Member]
Long-term Debt, Total	1,245	11,517
Paycheck Protection Program CARES Act [Member]
Long-term Debt, Total	9,151
Notes Payable, Other Payables [Member]
Long-term Debt, Total	163	1,563
Less: Current portion	$ (161)	$ (1,400)

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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