Note 7 - Income Taxes - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current	$ 3,546	$ 5,574	$ 2,144
Deferred	(308)	718	1,328
Total	3,238	6,292	3,472
Current	225	94	882
Deferred	(6)	33	(178)
Total	219	127	704
Current	578	1,322	204
Deferred	172	372	282
Total	750	1,694	486
Income Tax Expense (Benefit), Total	$ 4,207	$ 8,113	$ 4,662