(Parent Company Only) Financial Information - Summary of Statements of Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income
Total interest income	$ 116,417	$ 80,262	$ 70,763
Interest expense	6,930	5,355	5,557
Other expenses	12,209	9,988	9,472
Income tax benefit	13,527	4,544	(40,385)
Net income	22,141	5,696	51,989
Parent Company [Member]
Income
Interest/other	115	43	28
Dividends from subsidiary Bank	0	0	0
Total interest income	115	43	28
Interest expense	1,671	1,053	958
Other expenses	317	1,000	450
Loss before income tax benefit and equity in undistributed income of subsidiaries	(1,873)	(2,010)	(1,380)
Income tax benefit	(661)	(704)	(2,281)
Income (loss) before equity in undistributed income of subsidiaries	(1,212)	(1,306)	901
Equity in undistributed income of subsidiaries	23,353	7,002	51,088
Net income	$ 22,141	$ 5,696	$ 51,989