Note 14 - Derivatives (Details) - Gains (Losses) on Derivatives and Location on Income Statement - Designated as Hedging Instrument [Member] - Cash Flow Hedging [Member] - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)		$ (292)	$ 1,728	$ (587)	$ 1,878
Interest on FHLB [Member] | Active Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	[1]	$ (292)		$ (587)
Interest on FHLB [Member] | Forward Starting Interest Rate Swap One [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	[2]		$ 111		$ 261
Other Noninterest Income [Member] | Forward Starting Interest Rate Swap Two [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	[3]		$ 1,617		$ 1,617

[1] Loss represents net settlement on active interest rate swap.

[2] Gains represent tax adjusted amounts reclassified from accumulated other comprehensive income pertaining to the terminated forward starting interest rate swap.

[3] Gains represent tax adjusted amounts reclassified from accumulated other comprehensive income immediately upon cancellation of forecasted Federal Home Loan Bank of San Francisco borrowings.