Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balances at Dec. 31, 2012	$ 158,968	$ 12,500	$ 31,965	$ 105,402	$ 9,101
Net income	19,876			19,876
Other comprehensive income (loss), net of tax	(10,830)				(10,830)
Amortization of unearned compensation	288		288
Exercise of stock options	195		195
Stock option expense	48		48
Cash dividends on preferred stock	(370)			(370)
Cash dividends on common stock	(3,655)			(3,655)
Ending Balances at Dec. 31, 2013	164,520	12,500	32,496	121,253	(1,729)
Net income	18,101			18,101
Other comprehensive income (loss), net of tax	3,250				3,250
Amortization of unearned compensation	363		363
Exercise of stock options	165		165
Stock option expense	203		203
Stock issued from acquisition	12,689		12,689
Cash dividends on preferred stock	(133)			(133)
Cash dividends on common stock	(4,744)			(4,744)
Ending Balances at Dec. 31, 2014	194,414	12,500	45,916	134,477	1,521
Net income	20,549			20,549
Other comprehensive income (loss), net of tax	(2,244)				(2,244)
Amortization of unearned compensation	355		355
Exercise of stock options	403		403
Exercise of stock warrants	3,751		3,751
Tax benefit related to stock options	151		151
Stock option expense	288		288
Stock issued from acquisition	55,506		55,506
Cash dividends on preferred stock	(125)			(125)
Cash dividends on common stock	(6,216)			(6,216)
Ending Balances at Dec. 31, 2015	$ 266,832	$ 12,500	$ 106,370	$ 148,685	$ (723)