Other Comprehensive Income - Summary of the Tax Effects (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other comprehensive income (loss): Securities available-for-sale: Before Tax Amount
Change in unrealized gains during period	$ 2,802	$ 1,701
Reclassification adjustment for gains included in net income	0	(115)
Total other comprehensive income (loss), before tax	2,802	1,586
Other comprehensive income (loss): Securities available-for-sale: Tax Effect
Change in unrealized gains during period	(980)	(595)
Reclassification adjustment for gains included in net income	0	40
Total other comprehensive income	(980)	(555)
Other comprehensive income (loss): Securities available-for-sale: Net of Tax Amount
Change in unrealized gains during period	1,822	1,106
Reclassification adjustment for gains included in net income	0	(75)
Total other comprehensive income (loss), net of tax	$ 1,822	$ 1,031