ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 1,654,550	$ 1,692,940	$ 1,496,752
Total other comprehensive (loss) income	(30,869)	(19,360)	14,599
Ending balance	1,537,642	1,654,550	1,692,940
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	239	13,417	856
Other comprehensive (loss) income before reclassifications	(32,562)	(12,979)
Amounts reclassified from accumulated other comprehensive (loss) income	1,121	(199)
Total other comprehensive (loss) income	(31,441)	(13,178)
Ending balance	(31,202)	239	13,417
Foreign currency translation gains/(losses)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,010)	15,975
Other comprehensive (loss) income before reclassifications	784	(16,985)
Amounts reclassified from accumulated other comprehensive (loss) income	0	0
Total other comprehensive (loss) income	784	(16,985)
Ending balance	(226)	(1,010)	15,975
Net investment hedges of New Zealand JV
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	1,321	1,665
Other comprehensive (loss) income before reclassifications	0	(344)
Amounts reclassified from accumulated other comprehensive (loss) income	0	0
Total other comprehensive (loss) income	0	(344)
Ending balance	1,321	1,321	1,665
Cash flow hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	21,965	16,184
Other comprehensive (loss) income before reclassifications		5,944
Amounts reclassified from accumulated other comprehensive (loss) income		(163)
Total other comprehensive (loss) income		5,781
Ending balance		21,965	16,184
Cash flow hedges | Interest rate swaps
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Other comprehensive (loss) income before reclassifications	(32,200)
Cash flow hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Other comprehensive (loss) income before reclassifications	(31,547)
Amounts reclassified from accumulated other comprehensive (loss) income	672
Total other comprehensive (loss) income	(30,875)
Ending balance	(8,910)
Employee benefit plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(22,037)	(20,407)
Other comprehensive (loss) income before reclassifications	(1,799)	(1,594)
Amounts reclassified from accumulated other comprehensive (loss) income	449	(36)
Total other comprehensive (loss) income	(1,350)	(1,630)
Ending balance	$ (23,387)	$ (22,037)	$ (20,407)