Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended			36 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016
Basic earnings per share:
Weighted-average common shares outstanding	29,532,510	29,476,821	25,300,909
Weighted-average common shares less stock based awards	29,532,510	29,476,821	25,298,813
Weighted-average common shares stock based awards			201,558
Net income	$ 15,684	$ 15,385	$ 10,136
Gain on preferred stock redemption			(1,348)
Preferred stock dividends and accretion		1,873	(371)
Preferred stock dividends and accretion of discount		1,873	5,062
Net income available to common stockholders	$ 15,684	$ 13,512	$ 11,855
Basic earnings per share common undistributed earnings (loss) (in dollars per share)			$ 0.46
Basic earnings per share (in dollars per share)	$ 0.53	$ 0.46	$ 0.46
Diluted earnings per share:
Weighted-average common shares outstanding	29,532,510	29,476,821	25,300,909
Diluted average common shares outstanding	29,838,931	29,730,074	25,549,193
Net earnings available to common stockholders	$ 15,684	$ 13,512	$ 11,855
Diluted earnings per share (in dollars per share)	$ 0.53	$ 0.46	$ 0.46
Number of antidilutive options and warrants excluded from the diluted earnings per share calculation (in shares)	900,839	977,839	1,044,339
Warrants
Diluted earnings per share:
Number of antidilutive options and warrants excluded from the diluted earnings per share calculation (in shares)				815,339
Warrants, exercise price (in dollars per share)	$ 13.43			$ 13.43
Restricted stock and restricted stock units
Diluted earnings per share:
Dilutive effect of nonvested restricted awards (in shares)	305,678	253,253	248,284
Stock options
Diluted earnings per share:
Dilutive effect of nonvested restricted awards (in shares)	743