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, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	$ 38,700				$ 38,700				$ 37,300
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	(474)		(190)		(1,520)		(621)
Borrowed funds	29,500				29,500				29,600
Borrowed funds	(474)		(190)		(1,520)		(621)
Net gain (loss) from fair value adjustments(1) (2)	(474)		(190)		(1,520)		(621)
Collateralized Mortgage Backed Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	4,893				4,893				7,119
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	(16)		(95)		56		(626)
Borrowed funds	(16)		(95)		56		(626)
Net gain (loss) from fair value adjustments(1) (2)	(16)		(95)		56		(626)
Other securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	33,799				33,799				30,163
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	14		(381)		511		(328)
Borrowed funds	14		(381)		511		(328)
Net gain (loss) from fair value adjustments(1) (2)	14		(381)		511		(328)
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	(144)		(272)		35		(2,547)
Borrowed funds	29,535				29,535				29,570
Borrowed funds	(144)		(272)		35		(2,547)
Net gain (loss) from fair value adjustments(1) (2)	(144)		(272)		35		(2,547)
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	(146)	[1],[2]	(748)	[1],[2]	602	[1],[2]	(3,501)	[1],[2]
Borrowed funds	(146)	[1],[2]	(748)	[1],[2]	602	[1],[2]	(3,501)	[1],[2]
Net gain (loss) from fair value adjustments(1) (2)	$ (146)	[1],[2]	$ (748)	[1],[2]	$ 602	[1],[2]	$ (3,501)	[1],[2]

[1] The net gain (loss) from fair value adjustments presented in the above table does not include net gains (losses) of ($0.3) million and $0.6 million for the three months ended September 30, 2014 and 2013, 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 (losses) of ($2.1) million and $2.9 million for the nine months ended September 30, 2014 and 2013, respectively, from the change in the fair value of interest rate caps/Swaps.