Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ 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	$ 17,346	$ 21,136	$ 29,100	$ 19,642	$ 33,391	$ 18,574	$ (3,367)	$ 6,391	$ 87,224	$ 54,989	$ 40,054
Weighted average common shares outstanding-basic (in shares)									87,222	83,625	83,821
Plus: net effect of dilutive stock options and restricted stock units (in shares)									2,095	2,519	1,267
Weighted average common shares outstanding-diluted (in shares)									89,317	86,144	85,088
Net income per common share -- basic (in dollars per share)	$ 0.20	$ 0.24	$ 0.34	$ 0.23	$ 0.40	$ 0.22	$ (0.04)	$ 0.08	$ 1.00	$ 0.66	$ 0.48
Net income per common share -- diluted (in dollars per share)	$ 0.20	$ 0.24	$ 0.33	$ 0.22	$ 0.38	$ 0.22	$ (0.04)	$ 0.07	$ 0.98	$ 0.64	$ 0.47