Note 14 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Net operating loss carry-forward	$ 22,915	$ 24,507
Allowance for loan losses	2,090	1,865
OREO write-down	2,665	2,611
Alternative minimum tax credit carry-forward	173	346
Net assets from acquisitions	228	290
Net unrealized loss on securities		515
New market tax credit carry-forward	208	208
Nonaccrual loan interest	303	235
Accrued expenses	102	239
Deferred compensation		267
Lease liability	766
Other	309	241
	29,759	31,324
Deferred tax liabilities:
FHLB stock dividends	563	557
Fixed assets	57	94
Deferred loan costs	170	136
Net unrealized gain on securities	331
Lease right-of-use assets	766
Other	107	138
	1,994	925
Net deferred tax assets before valuation allowance	27,765	30,399
Valuation allowance		(1,117)
Net deferred tax assets	$ 27,765	$ 29,282