Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2016	Sep. 30, 2020	Sep. 30, 2019
Basic earnings per share:
Weighted-average common shares outstanding	29,559,026	29,899,063		29,708,239	29,880,511
Net income	$ 10,265	$ 12,173		$ 19,778	$ 29,919
Basic earnings per share (in dollars per share)	$ 0.35	$ 0.41		$ 0.67	$ 1.00
Diluted earnings per share:
Weighted-average common shares outstanding	29,559,026	29,899,063		29,708,239	29,880,511
Diluted average common shares outstanding	30,102,301	30,438,333		30,261,721	30,390,965
Net earnings available to common stockholders	$ 10,265	$ 12,173		$ 19,778	$ 29,919
Diluted earnings per share (in dollars per share)	$ 0.34	$ 0.40		$ 0.65	$ 0.98
Warrant term			10 years
Restricted Stock and Restricted Stock Units [Member]
Diluted earnings per share:
Dilutive effect of share-based payment awards (in shares)	543,275	539,270		553,482	510,454