ENTITY WIDE DISCLOSURES - Geographic Breakdown of Revenues and Total Assets (Detail) - USD ($) $ in Thousands	3 Months Ended								7 Months Ended		12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	May 31, 2015	May 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues	$ 319,825	$ 289,577	$ 336,440	$ 250,854	$ 254,998	$ 243,552	$ 235,399	$ 192,407	$ 571,718	$ 487,408	$ 1,196,696	$ 926,356	$ 842,047	$ 749,527
Total Assets	1,147,418				798,991				798,991		1,147,418	798,991	523,833	484,941
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									448,508		889,967		625,044	540,967
Total Assets	788,780				682,124				682,124		788,780	682,124	399,173	353,624
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									71,325		128,122		132,573	126,874
Total Assets	66,056				59,626				59,626		66,056	59,626	68,043	68,515
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									27,718		108,720		47,524	42,248
Total Assets	234,847				33,271				33,271		234,847	33,271	34,612	38,870
Other foreign countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Revenues									24,167		69,887		36,906	39,438
Total Assets	$ 57,735				$ 23,970				$ 23,970		$ 57,735	$ 23,970	$ 22,005	$ 23,932