Note 14 - Fair Value of Financial Instruments (Detail) - The Carrying Amounts and Estimated Fair Values of Financial Instruments (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Financial assets
Cash and due from banks	$ 11,839		$ 13,296
Cash and due from banks	11,839		13,296
Interest bearing deposits	116,985		75,048
Investment securities	100,634		147,899
Investment securities	103,205		150,251
Federal Home Loan Bank stock	4,443		5,067
Presold loans in process of settlement	2,146		2,146
Presold loans in process of settlement	2,146		2,146
Loans, net	704,637		722,075
Loans, net	714,077		735,685
FDIC loss share receivable	28,863	30,448	38,931	43,424	25,611	24,848
Accrued interest receivable	1,840		2,773
Bank-owned life insurance	18,723		18,978
Financial liabilities
Deposits carrying amount	852,764		876,056
Securities sold under repurchase agreements	7,554		9,787
Securities sold under repurchase agreements	7,554		9,787
Borrowed money	76,706		78,688
Borrowed money	85,089		87,697
Subordinated debt	15,464		15,464
Subordinated debt	7,732		7,732
Accrued interest payable	695		981
Demand Deposit Liabilities [Member]
Financial liabilities
Deposits carrying amount	295,379		287,466
Deposits fair value	295,379		287,466
Money Market Accounts [Member]
Financial liabilities
Deposits carrying amount	153,775		155,229
Deposits fair value	153,775		155,229
Savings Accounts [Member]
Financial liabilities
Deposits carrying amount	23,945		20,542
Deposits fair value	23,945		20,542
Time Deposits [Member]
Financial liabilities
Deposits carrying amount	379,665		412,819
Deposits fair value	$ 381,475		$ 415,145