Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Antidilutive securities earnings per share, amount	155,000	0	163,000	0
Basic earnings per share:
Net income	$ 6,785	$ 6,543	$ 19,950	$ 17,569
Less: income allocated to unvested restricted stock	(8)	0	(8)	0
Net income allocated to common stock	$ 6,777	$ 6,543	$ 19,942	$ 17,569
Weighted-average total common shares outstanding (in shares)	15,835,139	14,730,120	15,949,962	13,865,190
Weighted average unvested restricted stock (in shares)	(18,870)	0	(6,359)	0
Weighted-average common shares outstanding (in shares)	15,816,269	14,730,120	15,943,603	13,865,190
Basic earnings per share (in dollars per share)	$ 0.43	$ 0.44	$ 1.25	$ 1.27
Diluted earnings per share:
Net income allocated to common stock	$ 6,777	$ 6,543	$ 19,942	$ 17,569
Weighted-average common shares outstanding (in shares)	15,816,269	14,730,120	15,943,603	13,865,190
Diluted effect of stock options (in shares)	283,329	194,426	288,245	186,371
Diluted weighted-average common shares outstanding (in shares)	16,099,598	14,924,546	16,231,848	14,051,561
Diluted earnings per share (in shares)	$ 0.42	$ 0.44	$ 1.23	$ 1.25