Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss - beginning balance			$ (286,094)				$ (286,094)
Net current period other comprehensive income	$ (8,929)	$ (8,097)	(27,824)	$ (74)	$ 10,928	$ 10,070
Accumulated other comprehensive loss - ending balance	(330,944)						(330,944)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss - beginning balance			(286,094)				(286,094)
Other comprehensive income before reclassification							(43,692)
Reclassified from accumulated other comprehensive income							(1,158)
Net current period other comprehensive income							(44,850)
Foreign exchange rate impact	0						0
Accumulated other comprehensive loss - ending balance	(330,944)						(330,944)
Currency Translation Adjustments \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss - beginning balance			(79,066)				(79,066)
Other comprehensive income before reclassification							(43,685)
Reclassified from accumulated other comprehensive income							0
Net current period other comprehensive income							(43,685)
Foreign exchange rate impact	(24,363)						(24,363)
Accumulated other comprehensive loss - ending balance	(147,114)						(147,114)
Pension Liability Adjustments \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss - beginning balance			(206,682)				(206,682)
Other comprehensive income before reclassification							(2,410)
Reclassified from accumulated other comprehensive income							0
Net current period other comprehensive income							(2,410)
Foreign exchange rate impact	24,363						24,363
Accumulated other comprehensive loss - ending balance	(184,729)						(184,729)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss - beginning balance			$ (346)				(346)
Other comprehensive income before reclassification							2,403
Reclassified from accumulated other comprehensive income							(1,158)
Net current period other comprehensive income							1,245
Foreign exchange rate impact	0						0
Accumulated other comprehensive loss - ending balance	$ 899						$ 899