Note 21 - Income Taxes - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Federal income tax expense, current	$ 773	$ 2,005	$ 283
Federal income tax expense, deferred	292	2,837	409
Federal income tax expense, total	1,065	4,842	692
State income tax expense, current	1,733	1,474	582
State income tax expense, deferred	303	(76)	86
State income tax expense, total	2,036	1,398	668
Affordable housing partnership amortization, current	528	688	598
Income tax expense, current	3,034	4,167	1,463
Income tax expense, deferred	595	2,761	495
Income tax expense, total	$ 3,629	$ 6,928	$ 1,958