GOODWILL AND INTANGIBLE ASSETS, NET (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
GOODWILL AND INTANGIBLE ASSETS, NET
Impairment loss on goodwill	$ 0	$ 0	$ 0
Change in the goodwill balance
Balance at the beginning of the period	228,169	225,170
Additions and adjustments	1,500	5,000
Currency translation adjustment	(3,677)	(2,001)
Balance at the end of the period	225,992	228,169	225,170
Components of the intangible assets subject to amortization
Gross Carrying Amount	49,147	50,395
Accumulated Amortization	(40,320)	(34,129)
Net Book Value	8,827	16,266
Amortization of intangible assets
Cost of goods sold	7,000	983	3,927
Depreciation and amortization	434	656	983
Total amortization of intangible assets	7,434	1,639	4,910
Estimated future amortization of intangible assets
2014	3,593
2015	503
2016	3,969
2017	762
Net Book Value	8,827	16,266
Minimum
Components of the intangible assets subject to amortization
Estimated useful life	3 years
Maximum
Components of the intangible assets subject to amortization
Estimated useful life	10 years
Intellectual property
Components of the intangible assets subject to amortization
Gross Carrying Amount	26,949	26,957
Accumulated Amortization	(18,718)	(11,724)
Net Book Value	8,231	15,233
Estimated future amortization of intangible assets
Net Book Value	8,231	15,233
Intellectual property | Minimum
Components of the intangible assets subject to amortization
Estimated useful life	2 years
Intellectual property | Maximum
Components of the intangible assets subject to amortization
Estimated useful life	6 years
Trademarks
Components of the intangible assets subject to amortization
Gross Carrying Amount	13,838	13,860
Accumulated Amortization	(13,682)	(13,339)
Net Book Value	156	521
Estimated future amortization of intangible assets
Net Book Value	156	521
Trademarks | Minimum
Components of the intangible assets subject to amortization
Estimated useful life	7 years
Trademarks | Maximum
Components of the intangible assets subject to amortization
Estimated useful life	10 years
Technology
Components of the intangible assets subject to amortization
Estimated useful life	3 years
Gross Carrying Amount	3,200	4,333
Accumulated Amortization	(2,760)	(3,893)
Net Book Value	440	440
Estimated future amortization of intangible assets
Net Book Value	440	440
Non-compete
Components of the intangible assets subject to amortization
Gross Carrying Amount	5,160	5,245
Accumulated Amortization	(5,160)	(5,173)
Net Book Value		72
Estimated future amortization of intangible assets
Net Book Value		$ 72
Non-compete | Minimum
Components of the intangible assets subject to amortization
Estimated useful life	5 years
Non-compete | Maximum
Components of the intangible assets subject to amortization
Estimated useful life	10 years