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Earnings Per Share - Reconciliation (Details) - USD ($)		12 Months Ended			24 Months Ended
	Jan. 16, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018
Basic earnings per share:
Weighted-average common shares outstanding		29,891,046	29,728,308	29,600,702
Net income		$ 39,455,000	$ 34,012,000	$ 15,138,000
Basic earnings per share (in dollars per share)		$ 1.32	$ 1.14	$ 0.51
Diluted earnings per share:
Weighted-average common shares outstanding		29,891,046	29,728,308	29,600,702
Diluted average common shares outstanding		30,416,348	30,308,935	30,038,417
Net earnings available to common stockholders		$ 39,455,000	$ 34,012,000	$ 15,138,000
Diluted earnings per share (in dollars per share)		$ 1.30	$ 1.12	$ 0.50
Antidilutive securities				815,339
Warrants to purchase shares of common stock	815,339
Warrants, exercise price (in dollars per share)	$ 13.43
Market price per share	$ 14.23
Number os shares issued	45,836
Reduction in additional paid up capital	$ 313,000
Warrant [Member]
Diluted earnings per share:
Antidilutive securities					815,339
Warrants, exercise price (in dollars per share)			$ 13.43		$ 13.43
Restricted Stock and Restricted Stock Units [Member]
Diluted earnings per share:
Dilutive effect of share-based payment awards (in shares)		525,302	532,692	435,142
Employee and Nonemployee Stock Options [Member]
Diluted earnings per share:
Dilutive effect of share-based payment awards (in shares)			47,935	2,573

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