Note 22 - Derivatives - Gains (Losses) on Derivatives and Location on Income Statement (Details) - Reclassification out of Accumulated Other Comprehensive Income [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest Rate Swap [Member] | Interest on FHLB [Member]
Derivative gains (losses)	[1]	$ 396	$ 1,435
Forward Starting Interest Rate Swaps [Member]
Derivative gains (losses)		2,721	1,435	(1,900)
Forward Starting Interest Rate Swaps [Member] | Interest on FHLB [Member]
Derivative gains (losses)	[2]	2,325		(283)
Forward Starting Interest Rate Swaps [Member] | Other Noninterest Income [Member]
Derivative gains (losses)	[3]			$ (1,617)

[1] Losses represent tax effected amounts reclassified from accumulated other comprehensive income pertaining to net settlement recorded during the period on active interest rate swaps.

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

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