Note 10 - Fair Value of Financial Instruments (Details) - Quantitative Information About Recurring Level 3 Fair Value of Financial Instruments and the Fair Value Measurements (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Municipal [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	$ 10,170	$ 9,223	$ 9,378	$ 9,429
Valuation Technique	Discounted cash flows
Unobservable Input	Discount rate
Municipal [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	0.50%
Municipal [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	4.00%
Municipal [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	(3.30%)
Municipal - 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input	Discount rate
Municipal - 1 [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	7.00%
Municipal - 1 [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	11.00%
Municipal - 1 [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	(8.90%)
Municipal - 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input	Prepayment assumptions
Municipal - 2 [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	25.60%
Municipal - 2 [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	36.20%
Municipal - 2 [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	(31.10%)
Trust Preferred Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	13,059	14,935	7,427	6,650
Valuation Technique	Discounted cash flows
Unobservable Input	Defaults
Trust Preferred Securities [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	9.40%
Trust Preferred Securities [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	16.50%
Trust Preferred Securities [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	(13.10%)
Junior subordinated debentures [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	$ 29,541	$ 29,570	$ 24,742	$ 23,922
Valuation Technique	Discounted cash flows
Unobservable Input	Discount rate
Junior subordinated debentures [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	(7.00%)