Summary Quarterly Financial Data - Summary of Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2016	[1]	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	[2]	Dec. 31, 2015	[3]	Sep. 30, 2015	Jun. 30, 2015	[4]	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 267,597		$ 485,318	$ 371,136	$ 220,241		$ 267,857		$ 496,939	$ 391,616		$ 214,592	$ 1,344,292	$ 1,371,004	$ 1,377,812
Operating (loss) income	(11,539)		152,641	38,050	(119,567)		(6,975)		170,860	45,750		(50,199)	59,585	159,436	160,597
Net (loss) income	$ (11,905)		$ 65,655	$ 17,768	$ (84,049)		$ (11,028)		$ 97,950	$ 5,809		$ (43,598)	$ (12,531)	$ 49,133	$ 49,919
(Loss) earnings per share:
Net (loss) income per share, basic	$ (0.14)		$ 0.77	$ 0.21	$ (1.00)		$ (0.13)		$ 1.14	$ 0.07		$ (0.51)	$ (0.15)	$ 0.57	$ 0.57
Net (loss) income per share, diluted	$ (0.14)		$ 0.77	$ 0.21	$ (1.00)		$ (0.13)		$ 1.14	$ 0.07		$ (0.51)	$ (0.15)	$ 0.57	$ 0.57

[1] During the fourth quarter of 2016, the Company recorded $8,904 in restructuring and other related costs primarily related to severance costs and other employment expenses. See Note 4–Restructuring Programs and Separation Costs for further details.

[2] During the first quarter of 2016, the Company recorded $27,516 in equity compensation expense related to certain of the Company’s performance-vesting restricted shares (the “2.25x Performance Restricted shares”) which became probable of vesting during the first quarter and vested on April 1, 2016. See Note 18–Equity-Based Compensation for further details.

[3] During the fourth quarter of 2015, the Company recorded $2,001 in restructuring and other related costs primarily related to severance costs for certain positions which were eliminated as part of a cost savings initiative. See Note 4–Restructuring Programs and Separation Costs for further details.

[4] During the second quarter of 2015, the Company recorded $20,348 in loss on early extinguishment of debt and write-off of discounts and debt issuance costs related to the early redemption of $260,000 of its then existing Senior Notes. See Note 11–Long-Term Debt for further details.