Note 7 - Fair Value Measurements (Details) - Carrying Amount and Approximate Fair Value of Financial Instruments (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financial assets
Cash and due from banks, Carrying Value	$ 27,665	$ 9,812
Cash and due from banks, Fair Value	27,665	9,812
Federal funds sold, Carrying Value	56	196
Federal funds sold, Fair Value	56	196
Securities available-for-sale, Carrying Value	59,406	63,466
Securities available-for-sale, Fair Value	59,406	63,466
Restricted equity securities, Carrying Value	2,386	2,591
Restricted equity securities, Fair Value	2,386	2,591
Loans, net, Carrying Value	278,990	271,147
Loans, net, Fair Value	280,877	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	321,685	309,997
Total deposits, Fair Value	322,124	310,453
Short term borrowings, Carrying Value	361	216
Short term borrowings, Fair Value	361	216
FHLB borrowings, Carrying Value	19,000	22,000
FHLB borrowings, Fair Value	19,613	22,862
Accrued interest payable, Carrying Value	295	332
Accrued interest payable, Fair Value	295	332
Derivative liabilities		67
Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and due from banks, Fair Value	27,665	9,812
Federal funds sold, Carrying Value	56	196
Federal funds sold, Fair Value	56	196
Financial liabilities
Total deposits, Fair Value	191,955	175,325
Short term borrowings, Fair Value	361	216
Fair Value, Inputs, Level 2 [Member]
Financial assets
Securities available-for-sale, Carrying Value	59,406	63,466
Securities available-for-sale, Fair Value	59,406	63,466
Restricted equity securities, Carrying Value	2,386	2,591
Restricted equity securities, Fair Value	2,386	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	130,169	135,128
FHLB borrowings, Fair Value	19,613	22,862
Accrued interest payable, Fair Value	295	332
Derivative liabilities		67
Fair Value, Inputs, Level 3 [Member]
Financial assets
Loans, net, Fair Value	$ 280,877	$ 272,981