Segments - Additional Information (Detail)	3 Months Ended			6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	[1]	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)	[1]
Segment Reporting Information [Line Items]
Number of reportable segments | segment				2
Revenues, net	$ 541,237,000	$ 417,905,000		$ 1,061,670,000	$ 832,167,000
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues, net				$ 0

[1] Reflects the impact of the Company's adoption of Accounting Standards Update 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, to simplify several aspects of the accounting for share-based compensation, including the income tax consequences.