Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net income available to common stockholders	$ 13,062	$ 8,582	$ 10,793	$ 4,551	$ 10,121	$ 13,139	$ 8,204	$ 8,771	$ 36,988	$ 40,235	$ 40,079
Weighted average shares outstanding-basic (in shares)									48,721,504	46,783,442	46,319,760
Effect of non-vested restricted stock and stock options outstanding (in shares)									64,459	380,362	787,673
Weighted average shares outstanding-diluted (in shares)									48,785,963	47,163,804	47,107,433
Earnings per share-basic (usd per share)	$ 0.26	$ 0.17	$ 0.23	$ 0.10	$ 0.22	$ 0.28	$ 0.18	$ 0.19	$ 0.76	$ 0.86	$ 0.87
Earnings per share-diluted (usd per share)	$ 0.26	$ 0.17	$ 0.23	$ 0.10	$ 0.21	$ 0.28	$ 0.17	$ 0.19	$ 0.76	$ 0.85	$ 0.85
Anti-dilutive shares (in shares)									1,972,136	546,120	765,792