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	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 70,843	$ 68,253	$ 83,834	$ 95,855
Held to maturity investment securities	3,801	765
Held to maturity investment securities	3,977	827
Loans, net	938,140	979,306
Liabilities
Deposits	1,365,158	1,410,215
Federal funds purchased and other short-term borrowings	32,807	29,123
Securities sold under agreements to repurchase and other long-term borrowings	119,759	127,880
Subordinated notes payable to unconsolidated trusts	48,970	48,970
Fair Value, Inputs, Level 1 [Member]
Assets
Cash and cash equivalents	70,843	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	950,334	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	3,977	827
Loans, net	0	0
Accrued interest receivable	5,620	5,901
Federal Home Loan Bank and Federal Reserve Bank Stock
Liabilities
Deposits	0	0
Federal funds purchased and other short-term borrowings	32,807	29,123
Securities sold under agreements to repurchase and other long-term borrowings	129,694	139,375
Subordinated notes payable to unconsolidated trusts	0	0
Accrued interest payable	1,014	1,137
Fair Value, Inputs, Level 3 [Member]
Assets
Cash and cash equivalents	0	0
Held to maturity investment securities	0	0
Loans, net	938,934	977,846
Accrued interest receivable	0	0
Federal Home Loan Bank and Federal Reserve Bank Stock
Liabilities
Deposits	416,370	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	23,297	26,070
Accrued interest payable	0	0
Reported Value Measurement [Member]
Assets
Cash and cash equivalents	70,843	68,253
Held to maturity investment securities	3,801	765
Loans, net	938,140	979,306
Accrued interest receivable	5,620	5,901
Federal Home Loan Bank and Federal Reserve Bank Stock	9,368	9,516
Liabilities
Deposits	1,365,158	1,410,215
Federal funds purchased and other short-term borrowings	32,807	29,123
Securities sold under agreements to repurchase and other long-term borrowings	119,759	127,880
Subordinated notes payable to unconsolidated trusts	48,970	48,970
Accrued interest payable	1,014	1,137
Estimate of Fair Value Measurement [Member]
Assets
Cash and cash equivalents	70,843	68,253
Held to maturity investment securities	3,977	827
Loans, net	938,934	977,846
Accrued interest receivable	5,620	5,901
Federal Home Loan Bank and Federal Reserve Bank Stock
Liabilities
Deposits	1,366,704	1,412,572
Federal funds purchased and other short-term borrowings	32,807	29,123
Securities sold under agreements to repurchase and other long-term borrowings	129,694	139,375
Subordinated notes payable to unconsolidated trusts	23,297	26,070
Accrued interest payable	$ 1,014	$ 1,137