Segments - Schedule of Revenues and Long-Lived Assets by Geographical Area (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues, net	$ 430,601	$ 451,493	$ 404,605	$ 416,166	$ 376,697	$ 295,283	$ 273,502	$ 253,908	$ 1,702,865	$ 1,199,390	$ 895,171
Long-lived assets (excluding goodwill)	2,324,094				2,532,236				2,324,094	2,532,236	1,019,533
United States [Member]
Segment Reporting Information [Line Items]
Revenues, net									1,231,641	667,878	460,111
Long-lived assets (excluding goodwill)	1,721,055				1,833,311				1,721,055	1,833,311
United Kingdom [Member]
Segment Reporting Information [Line Items]
Revenues, net									248,598	262,613	$ 198,762
Long-lived assets (excluding goodwill)	332,788				332,362				332,788	332,362
Brazil [Member]
Segment Reporting Information [Line Items]
Long-lived assets (excluding goodwill)	$ 146,596				$ 211,340				$ 146,596	$ 211,340