Earnings Per Share - Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Basic earnings per share computation:
Net income available to common stockholders	$ 6,395	$ 5,963	$ 15,302	$ 19,815
Average common shares outstanding - basic (in shares)	15,160,579	13,955,859	14,903,757	13,949,325
Basic earnings per share (in dollars per share)	$ 0.42	$ 0.43	$ 1.03	$ 1.42
Diluted earnings per share computation:
Stock options and restricted stock (in shares)	50,032	97,573	61,698	89,089
Average common shares outstanding - diluted (in shares)	15,210,611	14,053,432	14,965,455	14,038,414
Diluted earnings per common share (in dollars per share)	$ 0.42	$ 0.42	$ 1.02	$ 1.41