Note 7 - Fair Value Measurements (Details) - Fair Value of Financial Instruments - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financial assets
Cash and due from banks	$ 30,377	$ 13,795
Cash and due from banks, fair value	30,385	13,806
Federal funds sold	1,675	649
Federal funds sold, fair value	1,675	649
Securities available-for-sale	50,686	54,603
Restricted equity securities	2,694	2,476
Restricted equity securities, fair value	2,694	2,476
Loans held for sale	394	242
Loans held for sale, fair value	394	242
Loans, net	356,847	328,347
Loans, net, fair value	360,535	332,167
Bank owned life insurance	6,242	3,622
Bank owned life insurance, fair value	6,242	3,622
Accrued income	1,873	1,924
Accrued income, fair value	1,873	1,924
Financial liabilities
Total deposits	400,227	362,595
Total deposits, fair value	400,788	350,418
FHLB borrowings	24,900	20,000
FHLB borrowings, fair value	25,171	20,356
Other borrowings	861	422
Accrued interest payable	439	272
Accrued interest payable, fair value	439	272
Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and due from banks, fair value	28,377	11,794
Federal funds sold	1,675	649
Federal funds sold, fair value	1,675	649
Fair Value, Inputs, Level 2 [Member]
Financial assets
Cash and due from banks, fair value	2,008	2,012
Securities available-for-sale	50,686	54,603
Restricted equity securities	2,694	2,476
Restricted equity securities, fair value	2,694	2,476
Loans held for sale	394	242
Loans held for sale, fair value	394	242
Bank owned life insurance	6,242	3,622
Bank owned life insurance, fair value	6,242	3,622
Accrued income	1,873	1,924
Accrued income, fair value	1,873	1,924
Financial liabilities
Total deposits, fair value	400,788	350,418
FHLB borrowings, fair value	25,171	20,356
Other borrowings	861	422
Accrued interest payable, fair value	439	272
Fair Value, Inputs, Level 3 [Member]
Financial assets
Loans, net, fair value	$ 360,535	$ 332,167