SEGMENT AND GEOGRAPHIC DISCLOSURES - Geographic Breakdown of Revenues and Total Assets (Detail) - USD ($) $ in Thousands	3 Months Ended								7 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, 2015	Dec. 31, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	May 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues	$ 316,334	$ 285,067	$ 312,256	$ 286,554	$ 319,825	$ 289,577	$ 336,440	$ 250,854	$ 571,718	$ 487,408	$ 1,200,211	$ 1,196,696	$ 926,356	$ 842,047
Total Assets	1,055,835				1,147,418				798,991		1,055,835	1,147,418	798,991	523,833
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									448,508		871,367	889,967		625,044
Total Assets	613,897				788,780				682,124		613,897	788,780	682,124	399,173
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									71,325		134,256	128,122		132,573
Total Assets	60,879				66,056				59,626		60,879	66,056	59,626	68,043
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									27,718		119,603	108,720		47,524
Total Assets	325,182				234,847				33,271		325,182	234,847	33,271	34,612
Other foreign countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									24,167		74,985	69,887		36,906
Total Assets	$ 55,877				$ 57,735				$ 23,970		$ 55,877	$ 57,735	$ 23,970	$ 22,005