Note 1 - Summary of Signifacnt Accounting Policies - Error Corrections and Prior Period Adjustments (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Net Proceeds from Line of Credit		$ 0
Proceeds from Line of Credit	$ 65,886	58,440
Payments to Line of Credit	(65,726)	(56,046)
Principal Payments on Long-Term Debt		0
Principal Payments on Financing Leases	(189)	(329)
Stock Option Excercises	173	33
Net Cash Provided by Financing Activities	$ 144	2,098
Previously Reported [Member]
Net Proceeds from Line of Credit		2,394
Proceeds from Line of Credit		0
Payments to Line of Credit		0
Principal Payments on Long-Term Debt		0
Principal Payments on Financing Leases		(329)
Stock Option Excercises		33
Net Cash Provided by Financing Activities		2,098
Revision of Prior Period, Adjustment [Member]
Net Proceeds from Line of Credit		(2,394)
Proceeds from Line of Credit		58,440
Payments to Line of Credit		(56,046)
Principal Payments on Long-Term Debt		0
Principal Payments on Financing Leases		0
Stock Option Excercises		$ 0