Note 9 - Employee Benefits (Details Textual) - USD ($) $ in Thousands		12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Employee Benefit Costs		$ 22,080	$ 17,965
Other Labor-related Expenses		4,900	4,900
Insured Maximum Exposure Per Employee		1,000
Aggregate Insurance Deductible for Employees	$ 4,000
Operating Expense [Member]
Employee Benefit Costs		$ 21,500	$ 17,400