Unaudited Quarterly Consolidated Financial Information (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
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 262,979	$ 312,766	$ 358,899	$ 295,949	$ 215,989	$ 261,064	$ 328,004	$ 283,148	$ 1,230,593	$ 1,088,205	$ 1,023,513
Gross profit	126,238	163,824	189,379	137,615	99,822	139,059	181,400	139,873	617,056	560,154	517,221
Income (loss) from operations	8,356	39,884	47,831	32,578	(13,937)	13,895	37,064	25,922	128,649	62,944	17,336
Net income (loss)	19,913	35,676	39,198	24,710	(10,886)	10,492	34,377	16,454	119,497	50,437	10,238
Net income (loss) attributable to common stockholders	$ 19,913	$ 35,676	$ 39,198	$ 24,710	$ (118,685)	$ 6,520	$ 30,426	$ 12,523	$ 119,497	$ (69,216)	$ (5,294)
Basic income (loss) per common shares (in dollars per share)	$ 0.29	$ 0.52	$ 0.55	$ 0.34	$ (1.72)	$ 0.08	$ 0.37	$ 0.15	$ 1.70	$ (1.01)	$ (0.07)
Diluted income (loss) per common share (in dollars per share)	$ 0.29	$ 0.51	$ 0.55	$ 0.33	$ (1.72)	$ 0.07	$ 0.35	$ 0.15	$ 1.66	$ (1.01)	$ (0.07)