Other Comprehensive Income - Summary of the Tax Effects (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other comprehensive income (loss): Securities available-for-sale: Before Tax Amount
Change in unrealized (losses) gains during period	$ (2,971)	$ 1,574	$ (1,270)	$ 4,520
Reclassification adjustment for gains included in net income	(1,128)	(128)	(1,243)	(128)
Total other comprehensive (loss) income, before tax	(4,099)	1,446	(2,513)	4,392
Other comprehensive income (loss): Securities available-for-sale: Tax Effect
Change in unrealized (losses) gains during period	1,040	(551)	445	(1,582)
Reclassification adjustment for gains included in net income	395	45	435	45
Total other comprehensive (loss) income	1,435	(506)	880	(1,537)
Other comprehensive income (loss): Securities available-for-sale: Net of Tax Amount
Change in unrealized (losses) gains during period	(1,931)	1,023	(825)	2,938
Reclassification adjustment for gains included in net income	(733)	(83)	(808)	(83)
Total other comprehensive (loss) income, net of tax	$ (2,664)	$ 940	$ (1,633)	$ 2,855