Note 10 - Fair Value of Financial Instruments (Details) - Level 3 fair value reconciliation: (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REMIC And CMO [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 22,930		$ 23,475
Other-than-temporary impairment charge	(916)		(1,419)
Changе in nеt unrеalizеd lossеs includеd in othеr comprеhеnsivе incomе	(1,820)		(1,862)
Ending balance	20,194		20,194
Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	9,327		9,429
Changе in nеt unrеalizеd lossеs includеd in othеr comprеhеnsivе incomе	(52)		(154)
Ending balance	9,275		9,275
Trust Preferred Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	8,367	5,653	6,650	5,632
of financial assets	(361)	137	150	104
Increase in accrued interest payable		(9)		(10)
Changе in nеt unrеalizеd lossеs includеd in othеr comprеhеnsivе incomе	(500)	315	706	370
Ending balance	7,506	6,096	7,506	6,096
Junior subordinated debentures [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	26,192	24,356	23,922	26,311
adjustment of financial liabilities	272	(374)	2,547	(2,279)
Increase in accrued interest payable	1	(273)	(4)	(323)
Ending balance	$ 26,465	$ 23,709	$ 26,465	$ 23,709