Note 8 - Premises, Equipment, and Leases (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Impairment of Long-Lived Assets to be Disposed of	$ 1,010	$ 677	$ 364
Depreciation, Nonproduction	2,912	3,560	3,563
Operating Leases, Rent Expense, Net, Total	$ 318	$ 582	$ 784