Note 12 - Income Taxes - Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Loans receivable	$ 2,265	$ 1,738
Deferred loan fees	424	314
Lease liability	500
Deferred compensation	833	630
Employee benefits	320	268
Unrealized losses on securities available-for-sale		479
Acquisition costs	271	306
Acquisition fair value adjustments	595	346
New Market Tax Credits carry forward		459
Alternative Minimum Tax carry forward		233
Other	429	364
Total deferred tax assets	5,637	5,137
Deferred tax liabilities:
Premises and equipment	841	796
Right of use asset	500
Federal Home Loan Bank stock	7	26
Mortgage servicing rights	2,483	1,680
Unrealized gains on securities available-for-sale	474
Goodwill	872	748
Intangibles	706	347
Other	246	350
Total deferred tax liabilities	6,129	3,947
Net deferred tax (liability) asset	$ (492)
Net deferred tax (liability) asset		$ 1,190