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Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic earnings per share:
Weighted-average common shares outstanding	29,728,308	29,600,702	29,532,510
Net income	$ 34,012	$ 15,138	$ 15,684
Basic earnings per share (in dollars per share)	$ 1.14	$ 0.51	$ 0.53
Diluted earnings per share:
Weighted-average common shares outstanding	29,728,308	29,600,702	29,532,510
Diluted average common shares outstanding	30,308,935	30,038,417	29,838,931
Net earnings available to common stockholders	$ 34,012	$ 15,138	$ 15,684
Diluted earnings per share (in dollars per share)	$ 1.12	$ 0.50	$ 0.53
Antidilutive securities		815,339	900,839
Warrants
Diluted earnings per share:
Antidilutive securities		815,339	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 share-based payment awards (in shares)	532,692	435,142	305,678
Stock options
Diluted earnings per share:
Dilutive effect of share-based payment awards (in shares)	47,935	2,573	743

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