Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Net revenues	$ 593,755	$ 195,443	$ 209,032	$ 191,972	$ 561,226	$ 187,328	$ 203,961	$ 181,709	$ 1,190,202	$ 1,134,224	$ 1,059,429
Gross profit	339,537	64,296	90,631	74,613	331,178	69,574	94,369	72,986	569,077	568,107	531,351
Net income (loss)	$ 111,724	$ (25,607)	$ (22,838)	$ (33,194)	$ 90,982	$ (29,155)	$ (16,485)	$ (29,436)	$ 30,085	$ 15,906	$ (843)
Net income (loss) per common share:
Basic (in dollars per share)	$ 3.45	$ (0.78)	$ (0.68)	$ (0.98)	$ 2.70	$ (0.86)	$ (0.48)	$ (0.85)	$ 0.91	$ 0.47	$ (0.02)
Diluted (in dollars per share)	$ 3.37	$ (0.78)	$ (0.68)	$ (0.98)	$ 2.63	$ (0.86)	$ (0.48)	$ (0.85)	$ 0.88	$ 0.45	$ (0.02)