Note 10 - Employee Benefits - Employee Benefit Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Health benefits, including premiums	$ 14,607	$ 13,084
401(k) matching	2,549	1,946
Deferred bonus plan	809	698
Total	$ 17,965	$ 15,728