Note 15 - Income Taxes - Significant Components of Net Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets
Allowance for loan losses	$ 4,275	$ 4,511
Unrealized losses on available-for-sale securities	87
Unrealized asset losses	730	722
Purchase accounting	24	3,418
FDIC assisted transactions	1,510	4,131
Intangible assets	2,430	2,616
Deferred compensation assets	3,468	3,617
Deferred loan fees	1,201	1,221
Other	491	450
Total deferred tax assets	14,216	20,686
Deferred tax liabilities
FDIC indemnification asset	1,195	8,525
Fixed assets	1,381	1,282
Unrealized gains on available-for-sale securities		259
Odd days interest deferral	1,614	233
Other	460	819
Total deferred tax liabilities	4,650	11,118
Net deferred tax asset	$ 9,566	$ 9,568