Note 10 - Fair Value of Financial Instruments (Details) - Financial assets and liabilities reported under the fair value option: (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	$ 41,500				$ 41,500				$ 54,500
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	(190)		825		(621)		(185)
Borrowed funds	26,500				26,500				23,900
Borrowed funds	(190)		825		(621)		(185)
Net (loss) gain from fair value adjustments (1) (2)	(190)		825		(621)		(185)
Collateralized Mortgage Backed Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	12,004				12,004				24,911
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	(95)		(14)		(626)		(175)
Borrowed funds	(95)		(14)		(626)		(175)
Net (loss) gain from fair value adjustments (1) (2)	(95)		(14)		(626)		(175)
Other securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	29,491				29,491				29,577
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	(381)		325		(328)		571
Borrowed funds	(381)		325		(328)		571
Net (loss) gain from fair value adjustments (1) (2)	(381)		325		(328)		571
Borrowed funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	(272)		374		(2,547)		2,279
Borrowed funds	26,465				26,465				23,922
Borrowed funds	(272)		374		(2,547)		2,279
Net (loss) gain from fair value adjustments (1) (2)	(272)		374		(2,547)		2,279
Financial Assets And Liabilities, Excluding Interest Rate Caps / Swaps [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	(748)	[1],[2]	685	[1],[2]	(3,501)	[1],[2]	2,675	[1],[2]
Borrowed funds	(748)	[1],[2]	685	[1],[2]	(3,501)	[1],[2]	2,675	[1],[2]
Net (loss) gain from fair value adjustments (1) (2)	$ (748)	[1],[2]	$ 685	[1],[2]	$ (3,501)	[1],[2]	$ 2,675	[1],[2]

[1] The net gain (loss) from fair value adjustments presented in the above table does not include net gains of $0.6 million and $0.1 million for the three months ended September 30, 2013 and 2012, respectively, from the change in the fair value of interest rate caps/swaps.

[2] The net gain (loss) from fair value adjustments presented in the above table does not include net gains of $2.9 million and net losses of ($2.9) million for the nine months ended September 30, 2013 and 2012, respectively, from the change in the fair value of interest rate caps/swaps.