Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Comprehensive Income [Abstract]
Unrealized gains on available-for-sale securities, taxes	$ 1,919	$ (1,904)	$ 47	$ (3,532)
Unamortized holding losses on held to maturity securities transferred from available for sale, taxes	(68)	0	(125)	0
Other Comprehensive Income Loss Reclassification Adjustment For Sale Or Writedown Of Securities Included In Net Income Tax	$ 0	$ 212	$ 90	$ 286