STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015	Mar. 31, 2015	Mar. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss	$ (198,677)	$ (32,114)	$ (14,629)	$ (198,677)	$ (32,114)	$ (180,122)	$ (198,910)	$ (18,908)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(15,658)		(16,827)	(4,725)	(9,623)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(1,766)	906		(754)	(451)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(17,424)		(15,921)	187	(10,074)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	0		0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(34)	(31)		(27)	(66)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(1,131)		(1,564)	46	(3,132)
Other Comprehensive Income (Loss), Net of Tax	(18,555)	(17,485)	(17,485)	233	(13,206)
Accumulated Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), before Tax	(51,476)	(9,425)	7,402	(51,476)	(9,425)	(35,818)	(46,751)	198
Other Comprehensive Income (Loss), Net of Tax	(15,658)		(16,827)	(4,725)	(9,623)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss	(3,538)	979	104	(3,538)	979	(1,738)	(2,757)	1,496
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(1,766)		906	(754)	(451)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	34		31	(27)	(66)
Other Comprehensive Income (Loss), Net of Tax	(1,800)		875	(781)	(517)
Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss	(143,663)	$ (23,668)		(143,663)	(23,668)	$ (142,566)	$ (149,402)	$ (20,602)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0		0	5,666	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	1,097		1,533	73	(3,066)
Other Comprehensive Income (Loss), Net of Tax	$ (1,097)		$ (1,533)	$ 5,739	$ (3,066)