Note 7 - Fair Value Measurements (Details) - Carrying Amount and Approximate Fair Value of Financial Instruments (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financial assets
Cash and due from banks, carrying value	$ 14,464	$ 9,812
Cash and due from banks, fair value	14,463	9,812
Federal funds sold, carrying value	1,420	196
Federal funds sold, fair value	1,420	196
Securities available for sale, carrying value	59,609	63,466
Securities available for sale, at fair value	59,609	63,466
Restricted equity securities, carrying value	2,414	2,591
Restricted equity securities, fair value	2,414	2,591
Loans, net, carrying value	283,640	271,147
Loans, net, fair value	284,832	272,981
Accrued income, carrying value	1,781	1,590
Accrued income, fair value	1,781	1,590
Derivative assets		67
Derivative assets		67
Financial liabilities
Total deposits, carrying value	325,368	309,997
Total deposits, fair value	325,614	310,453
Short term borrowings, carrying value	522	216
Short term borrowings, fair value	522	216
FHLB borrowings, carrying value	19,000	22,000
FHLB borrowings, fair value	19,615	22,862
Accrued interest payable, carrying value	309	332
Accrued interest payable, fair value	309	332
Derivative liabilities		67
Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and due from banks, fair value	12,464	9,812
Federal funds sold, carrying value	1,420	196
Federal funds sold, fair value	1,420	196
Fair Value, Inputs, Level 2 [Member]
Financial assets
Securities available for sale, carrying value	59,609	63,466
Securities available for sale, at fair value	59,609	63,466
Restricted equity securities, carrying value	2,414	2,591
Restricted equity securities, fair value	2,414	2,591
Accrued income, carrying value	1,781	1,590
Accrued income, fair value	1,781	1,590
Derivative assets		67
Financial liabilities
Total deposits, fair value	325,614	310,453
Short term borrowings, fair value	522	216
FHLB borrowings, fair value	19,615	22,862
Accrued interest payable, fair value	309	332
Derivative liabilities		67
Fair Value, Inputs, Level 3 [Member]
Financial assets
Cash and due from banks, fair value	1,999
Loans, net, fair value	$ 284,832	$ 272,981