Note 10 - Employee Benefits (Details Textual) - USD ($) $ in Thousands		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Employee Benefit Costs		$ 17,965	$ 15,728
Other Labor-related Expenses		4,900	2,900
Insured Maximum Exposure Per Employee			1,000
Aggregate Insurance Deductible for Employees	$ 4,000
Operating Expense [Member]
Employee Benefit Costs		$ 17,400	$ 15,200