ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2016	Sep. 30, 2015	Mar. 31, 2015	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (33,503)		$ (4,825)	$ (4,825)
Other comprehensive income/(loss) before reclassifications	(9,940)			(36,365)
Amounts reclassified from accumulated other comprehensive loss	(3,576)			7,687
Net other comprehensive income/(loss)	(13,516)			(28,678)
Recapitalization of New Zealand JV	3,438
Ending balance	(43,581)			(33,503)
Foreign currency translation gains/ (losses)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(2,450)		25,533	25,533
Other comprehensive income/(loss) before reclassifications	4,396			(27,983)
Amounts reclassified from accumulated other comprehensive loss	0			0
Net other comprehensive income/(loss)	4,396			(27,983)
Recapitalization of New Zealand JV	3,622
Ending balance	5,568			(2,450)
Net investment hedges of New Zealand JV
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	6,271		(145)	(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)	(1,548)
Other comprehensive income/(loss) before reclassifications	(14,336)			(14,444)
Amounts reclassified from accumulated other comprehensive loss	413			4,400
Net other comprehensive income/(loss)	(13,923)			(10,044)
Recapitalization of New Zealand JV	(184)
Ending balance	(25,699)			(11,592)
Employee benefit plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(25,732)		(28,665)	(28,665)
Other comprehensive income/(loss) before reclassifications	0			(354)
Amounts reclassified from accumulated other comprehensive loss	617			3,287
Net other comprehensive income/(loss)	617			2,933
Recapitalization of New Zealand JV	0
Ending balance	(25,115)			$ (25,732)
Designated as Hedging Instrument | Cash Flow Hedging | Other comprehensive (loss) income
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Designated hedged item, gain (loss) recognized in other comprehensive income		$ (14,800)
Interest rate swaps | Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive income/(loss) before reclassifications		$ (10,200)
Interest rate swaps | Designated as Hedging Instrument | Cash Flow Hedging | Other comprehensive (loss) income
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Designated hedged item, gain (loss) recognized in other comprehensive income	$ (14,886)		$ 0