Note 7 - Income Taxes - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current	$ 5,574	$ 2,144	$ 10,947
Deferred	718	1,328	(1,596)
Total	6,292	3,472	9,351
Current	94	882	387
Deferred	33	(178)	704
Total	127	704	1,091
Current	1,322	204	837
Deferred	372	282	61
Total	1,694	486	898
Total	$ 8,113	$ 4,662	$ 11,340