Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 17,273	$ 14,290	$ 13,391	$ 8,757	$ 12,964	$ 14,514	$ 11,697	$ 3,154	$ 53,711	$ 42,329	$ 53,830
Basic weighted average shares (in shares)		52,111,444	52,120,272	51,992,150	52,086,247	52,238,796	52,383,842	52,433,902	52,079,865	52,284,616	52,572,496
Effect of dilutive stock options and restricted stock									555,550	383,323	506,238
Diluted weighted average shares		52,722,127	52,474,199	52,369,660	52,420,529	52,627,541	52,717,787	52,910,223	52,635,415	52,667,939	53,078,734
Basic (usd per share)	$ 0.33	$ 0.27	$ 0.26	$ 0.17	$ 0.25	$ 0.28	$ 0.22	$ 0.06	$ 1.03	$ 0.81	$ 1.02
Diluted (usd per share)	$ 0.33	$ 0.26	$ 0.26	$ 0.17	$ 0.25	$ 0.27	$ 0.22	$ 0.06	$ 1.02	$ 0.80	$ 1.01
Anti-dilutive shares (in shares)									1,868,087	1,920,313	785,825