Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Basic earnings per share:
Net income	$ 3,367	$ 6,601	$ 6,939	$ 13,165
Less: income allocated to unvested restricted stock	(8)	0	(17)	0
Net income allocated to common stock	$ 3,359	$ 6,601	$ 6,922	$ 13,165
Weighted-average total common shares outstanding (in shares)	15,375,805	16,017,089	15,459,639	16,008,325
Weighted average unvested restricted stock (in shares)	(38,400)	0	(38,087)	0
Weighted-average common shares outstanding (in shares)	15,337,405	16,017,089	15,421,552	16,008,325
Basic earnings per share (in dollars per share)	$ 0.22	$ 0.41	$ 0.45	$ 0.82
Diluted earnings per share:
Net income allocated to common stock	$ 3,359	$ 6,601	$ 6,922	$ 13,165
Weighted-average common shares outstanding (in shares)	15,337,405	16,017,089	15,421,552	16,008,325
Diluted effect of stock options (in shares)	36,250	312,950	101,074	294,949
Diluted weighted-average common shares outstanding (in shares)	15,373,655	16,330,039	15,522,626	16,303,274
Diluted earnings per share (in shares)	$ 0.22	$ 0.40	$ 0.45	$ 0.81
Antidilutive securities earnings per share, amount	660,859	15,000	163,000	15,000