Note 7 - Fair Value of Assets and Liabilities (Details) - The Carrying Values and Estimated Fair Values of Financial Instruments (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financial assets:
Cash and short-term investments	$ 59,833	$ 25,620
Cash and short-term investments	59,833	25,620
Securities available for sale	147,588	152,817
Loans, net	638,557	640,283
Loans, net	649,453	651,133
Loans held for sale, net	59,312	72,727
Loans held for sale, net	59,312	74,964
Derivative assets	1,314
Derivative assets	1,314
Accrued interest receivable	5,545	5,673
Accrued interest receivable	5,545	5,673
Financial liabilities:
Demand deposits	693,797	686,184
Time deposits	280,930	286,609
Time deposits	284,626	290,483
Borrowings	167,138	162,746
Borrowings	159,950	158,027
Derivative liability	397	513
Derivative liability	397	513
Accrued interest payable	786	837
Accrued interest payable	786	837
Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and short-term investments	59,833	25,620
Loans, net	0	0
Loans held for sale, net	0	0
Derivative assets	0
Accrued interest receivable	5,545	5,673
Financial liabilities:
Time deposits	0	0
Borrowings	0	0
Derivative liability	0	0
Accrued interest payable	786	837
Fair Value, Inputs, Level 1 [Member] | Demand Deposits [Member]
Financial liabilities:
Demand deposits	412,867	399,575
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Cash and short-term investments	0	0
Securities available for sale	147,588	152,817
Loans, net	0	0
Loans held for sale, net	59,312	74,964
Derivative assets	1,314
Accrued interest receivable	0	0
Financial liabilities:
Time deposits	284,626	290,483
Borrowings	159,950	158,027
Derivative liability	397	513
Accrued interest payable	0	0
Fair Value, Inputs, Level 2 [Member] | Demand Deposits [Member]
Financial liabilities:
Demand deposits	0	0
Fair Value, Inputs, Level 3 [Member]
Financial assets:
Cash and short-term investments	0	0
Loans, net	649,453	651,133
Loans held for sale, net	0	0
Accrued interest receivable	0	0
Financial liabilities:
Time deposits	0	0
Borrowings	0	0
Derivative liability	0	0
Accrued interest payable	0	0
Fair Value, Inputs, Level 3 [Member] | Demand Deposits [Member]
Financial liabilities:
Demand deposits	0	0
Demand Deposits [Member]
Financial liabilities:
Demand deposits	412,867	399,575
Demand deposits	$ 412,867	$ 399,575