Note 9 - Income Taxes - The Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 5,024	$ 4,594	$ 1,501
State	990	806	304
Foreign	1,287	1,064	1,116
Current Income Tax Expense (Benefit), Total	7,301	6,464	2,921
Deferred:
Federal	63	(397)	538
State	(9)	(48)	144
Foreign	25	117	142
Deferred Income Tax Expense (Benefit), Total	79	(328)	824
Provision for income taxes	$ 7,380	$ 6,136	$ 3,745