Note 11 - Fair Value Measurements (Details) - Fair Value of Financial Instruments - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financial assets
Cash and due from banks	$ 28,745	$ 13,795
Cash and due from banks, fair value	28,762	13,806
Federal funds sold	1,329	649
Federal funds sold, fair value	1,329	649
Securities available-for-sale	52,544	54,603
Restricted equity securities	2,535	2,476
Restricted equity securities, fair value	2,535	2,476
Loans held for sale	1,643	242
Loans held for sale, fair value	1,643	242
Loans, net	364,060	328,347
Loans, net, fair value	362,440	332,167
Bank owned life insurance	6,285	3,622
Bank owned life insurance, fair value	6,285	3,622
Accrued income	2,057	1,924
Accrued income, fair value	2,057	1,924
Financial liabilities
Total deposits	399,546	362,595
Total deposits, fair value	400,117	350,418
FHLB borrowings	22,000	20,000
FHLB borrowings, fair value	22,191	20,356
Subordinated notes	7,194
Subordinated notes	7,354
Other borrowings	2,361	422
Accrued interest payable	372	272
Accrued interest payable, fair value	372	272
Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and due from banks, fair value	26,995	11,794
Federal funds sold	1,329	649
Federal funds sold, fair value	1,329	649
Fair Value, Inputs, Level 2 [Member]
Financial assets
Cash and due from banks, fair value	1,767	2,012
Securities available-for-sale	52,544	54,603
Restricted equity securities	2,535	2,476
Restricted equity securities, fair value	2,535	2,476
Loans held for sale	1,643	242
Loans held for sale, fair value	1,643	242
Bank owned life insurance	6,285	3,622
Bank owned life insurance, fair value	6,285	3,622
Accrued income	2,057	1,924
Accrued income, fair value	2,057	1,924
Financial liabilities
Total deposits, fair value	400,117	350,418
FHLB borrowings, fair value	22,191	20,356
Subordinated notes	7,354
Other borrowings	2,361	422
Accrued interest payable, fair value	372	272
Fair Value, Inputs, Level 3 [Member]
Financial assets
Loans, net, fair value	$ 362,440	$ 332,167