Note 13 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Allowance for loan and lease losses	$ 4,964	$ 8,278
Discount on purchased loans	839	2,044
Real estate owned	165	263
Section 382 net operating loss carryforward	1,135	1,976
Net operating loss carryforward		1,346
Nonaccrual loan interest	969	1,471
Unrealized loss on securities available for sale		891
Other	1,245	1,923
Total deferred tax assets	9,317	18,192
Deferred tax liabilities:
Office properties	(2,046)	(2,964)
Core deposit intangible	(1,382)	(2,293)
Unrealized gain on securities available for sale	(77)
Prepaid expenses and other	(1,201)	(1,316)
Total deferred tax liabilities	(4,706)	(6,573)
Net deferred tax asset	$ 4,611	$ 11,619