Note 18 - Fair Value of Financial Instruments (Details) - Financial Assets and Liabilities Reported Under the Fair Value Option (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	$ 32,600
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	(2,568)		(2,521)		55
Collateralized Mortgage Backed Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	4,678		7,119
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	75		(725)		(539)
Other Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	27,915		30,163
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	598		241		796
Borrowed Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Measurements	28,771		29,570
Changes in Fair Values For Items Measured at Fair Value Pursuant to Election of the Fair Value Option	802		(5,651)		2,062
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	$ 1,475	[1]	$ (6,135)	[1]	$ 2,319	[1]

[1] The net gain (loss) from fair value adjustments presented in the above table does not include net gains and (losses) of ($4.0) million, $3.6 million and ($2.3) million from the change in fair value of derivative instruments during the years ended December 31, 2014, 2013 and 2012, respectively.