Note 11 - Fair Value Measurements (Details) - The Carrying Amounts and Estimated Fair Values of the Company’s Financial Instruments (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 94,963	$ 68,253	$ 77,726	$ 95,855
Held to maturity investment securities	3,827	765
Held to maturity investment securities	3,929	827
Loans, net	965,229	979,306
Liabilities
Deposits	1,409,232	1,410,215
Federal funds purchased and other short-term borrowings	27,393	29,123
Securities sold under agreements to repurchase and other long-term borrowings	127,843	127,880
Subordinated notes payable to unconsolidated trusts	48,970	48,970
Fair Value, Inputs, Level 1 [Member]
Assets
Cash and cash equivalents	94,963	68,253
Held to maturity investment securities	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Federal Home Loan Bank and Federal Reserve Bank Stock
Liabilities
Deposits	956,646	938,700
Federal funds purchased and other short-term borrowings	0	0
Securities sold under agreements to repurchase and other long-term borrowings	0	0
Subordinated notes payable to unconsolidated trusts	0	0
Accrued interest payable	0	0
Fair Value, Inputs, Level 2 [Member]
Assets
Cash and cash equivalents	0	0
Held to maturity investment securities	3,929	827
Loans, net	0	0
Accrued interest receivable	5,863	5,901
Federal Home Loan Bank and Federal Reserve Bank Stock
Liabilities
Deposits	0	0
Federal funds purchased and other short-term borrowings	27,393	29,123
Securities sold under agreements to repurchase and other long-term borrowings	139,332	139,375
Subordinated notes payable to unconsolidated trusts	0	0
Accrued interest payable	1,041	1,137
Fair Value, Inputs, Level 3 [Member]
Assets
Cash and cash equivalents	0	0
Held to maturity investment securities	0	0
Loans, net	967,622	977,846
Accrued interest receivable	0	0
Federal Home Loan Bank and Federal Reserve Bank Stock
Liabilities
Deposits	454,616	473,872
Federal funds purchased and other short-term borrowings	0	0
Securities sold under agreements to repurchase and other long-term borrowings	0	0
Subordinated notes payable to unconsolidated trusts	24,663	26,070
Accrued interest payable	0	0
Reported Value Measurement [Member]
Assets
Cash and cash equivalents	94,963	68,253
Held to maturity investment securities	3,827	765
Loans, net	965,229	979,306
Accrued interest receivable	5,863	5,901
Federal Home Loan Bank and Federal Reserve Bank Stock	9,368	9,516
Liabilities
Deposits	1,409,232	1,410,215
Federal funds purchased and other short-term borrowings	27,393	29,123
Securities sold under agreements to repurchase and other long-term borrowings	127,843	127,880
Subordinated notes payable to unconsolidated trusts	48,970	48,970
Accrued interest payable	1,041	1,137
Estimate of Fair Value Measurement [Member]
Assets
Cash and cash equivalents	94,963	68,253
Held to maturity investment securities	3,929	827
Loans, net	967,622	977,846
Accrued interest receivable	5,863	5,901
Federal Home Loan Bank and Federal Reserve Bank Stock
Liabilities
Deposits	1,411,262	1,412,572
Federal funds purchased and other short-term borrowings	27,393	29,123
Securities sold under agreements to repurchase and other long-term borrowings	139,332	139,375
Subordinated notes payable to unconsolidated trusts	24,663	26,070
Accrued interest payable	$ 1,041	$ 1,137