Note 10 - Fair Value of Financial Instruments (Details) - Assets and Liabilities Carried at Fair Value on a Recurring Basis, Classified Within Level 3 of the Valuation Hierarchy (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014
Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 10,170	$ 9,223
Purchases	475	2,475
Principal repayments	(53)	(1,106)
Ending balance	10,592	10,592
Trust Preferred Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	13,059	14,935
Sales		(1,871)
Net gain from fair value adjustment of financial assets	29	55
Change in unrealized gains (losses) included in other comprehensive income	273	242
Ending balance	13,361	13,361
Changes in unrealized held at period end		242
Junior subordinated debentures [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	29,541	29,570
Net gain from fair value adjustment of financial liabilities	(154)	(179)
Change in accrued interest payable	1	(3)
Ending balance	$ 29,388	$ 29,388