INCOME TAXES (Details 3) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
INCOME TAXES
Income taxes based on domestic statutory rates	$ 68,077,000	$ 55,899,000	$ 95,858,000
Effect of tax rate differential	(68,654,000)	(120,785,000)	(177,540,000)
Intangible amortization	4,750,000	4,881,000	9,502,000
Change in liability for uncertain tax positions	(2,178,000)	15,268,000	34,517,000
Change in valuation allowance	26,838,000	68,596,000	93,336,000
Other	6,027,000	2,454,000	(1,713,000)
Provision for income taxes	34,860,000	26,313,000	53,960,000
Income resulting from tax holidays and tax incentives	15,200,000	22,600,000	41,800,000
Expiration date of existing holidays	2022
Tax effect of foreign income not repatriated to Singapore	$ 51,500,000	$ 26,700,000	$ 17,700,000
Effect on basic loss per share due to income resulting from tax holidays and tax incentives (in dollars per share)	$ 0.02	$ 0.03	$ 0.06
Effect on diluted loss per share due to income resulting from tax holidays and tax incentives (in dollars per share)	$ 0.02	$ 0.03	$ 0.06