LONG-TERM DEBT, DERIVATIVES AND LETTERS OF CREDIT - Amounts Recognized in Other Comprehensive Income (Loss), and Reclassified Into Income (Detail) - USD ($) $ in Thousands	7 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2017		Dec. 31, 2016	May 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	$ 101	$ (1,802)		$ 481	$ 3,237
Net investment hedge
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss)	101	(1,802)		481	3,237
Gain (Loss) Reclassified from Other Comprehensive Income (Loss) to Earnings (Loss)	0	0		0	0
Convertible debt embedded derivative
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments Gain (Loss), Net	$ 0	$ 818	[1]	$ 0	$ 0

[1] Reflected as “Gain on convertible debt embedded derivative” in the consolidated statements of operations.