ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2015	Jun. 30, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		$ (33,503)	$ (4,825)
Other comprehensive income/(loss) before reclassifications		(11,863)	(36,365)
Amounts reclassified from accumulated other comprehensive loss		(2,929)	7,687
Net other comprehensive income/(loss)		(14,792)	(28,678)
Recapitalization of New Zealand JV		3,438
Ending balance		(44,857)	(33,503)
Foreign currency translation gains/ (losses)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		(2,450)	25,533
Other comprehensive income/(loss) before reclassifications		15,338	(27,983)
Amounts reclassified from accumulated other comprehensive loss		0	0
Net other comprehensive income/(loss)		15,338	(27,983)
Recapitalization of New Zealand JV		3,622
Ending balance		16,510	(2,450)
Net investment hedges of New Zealand JV
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		6,271	(145)
Other comprehensive income/(loss) before reclassifications		0	6,416
Amounts reclassified from accumulated other comprehensive loss		(4,606)	0
Net other comprehensive income/(loss)		(4,606)	6,416
Recapitalization of New Zealand JV		0
Ending balance		1,665	6,271
Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		(11,592)	(1,548)
Other comprehensive income/(loss) before reclassifications		(27,201)	(14,444)
Amounts reclassified from accumulated other comprehensive loss		428	4,400
Net other comprehensive income/(loss)		(26,773)	(10,044)
Recapitalization of New Zealand JV		(184)
Ending balance		(38,549)	(11,592)
Employee benefit plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		(25,732)	(28,665)
Other comprehensive income/(loss) before reclassifications		0	(354)
Amounts reclassified from accumulated other comprehensive loss		1,249	3,287
Net other comprehensive income/(loss)		1,249	2,933
Recapitalization of New Zealand JV		0
Ending balance		(24,483)	$ (25,732)
Interest rate swaps | Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive income/(loss) before reclassifications	$ (10,200)	$ (29,000)