Note 7 - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current	$ 9,955	$ 8,578	$ 7,169
Deferred	(1,232)	99	195
Total	8,723	8,677	7,364
Current	455	714	716
Deferred	(23)	34	(7)
Total	432	748	709
Current	680	448	1,020
Deferred	(85)	63	(89)
Total	595	511	931
Total	$ 9,750	$ 9,936	$ 9,004