Note 1 - Summary of Signifacnt Accounting Policies - Error Corrections and Prior Period Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net Proceeds from Line of Credit	$ 0
Proceeds from Line of Credit	31,133	$ 26,986
Payments to Line of Credit	32,145	28,420
Payments to Line of Credit	(32,145)	(28,420)
Principal Payments on Long-Term Debt	0
Principal Payments on Financing Leases	(96)	(184)
Stock Option Excercises	35	33
Net Cash Provided by Financing Activities	$ (1,073)	(1,585)
Previously Reported [Member]
Net Proceeds from Line of Credit		(1,434)
Proceeds from Line of Credit		0
Payments to Line of Credit		0
Payments to Line of Credit		0
Principal Payments on Long-Term Debt		0
Principal Payments on Financing Leases		(184)
Stock Option Excercises		33
Net Cash Provided by Financing Activities		(1,585)
Revision of Prior Period, Adjustment [Member]
Net Proceeds from Line of Credit		1,434
Proceeds from Line of Credit		26,986
Payments to Line of Credit		28,420
Payments to Line of Credit		$ (28,420)