INCOME TAXES (Details 3) (USD $)
12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Income taxes based on domestic statutory rates $ 114,011,000 $ 68,077,000 $ 55,899,000
Effect of tax rate differential (80,842,000) (68,654,000) (120,785,000)
Intangible amortization 5,143,000 4,750,000 4,881,000
Change in liability for uncertain tax positions 29,729,000 (2,178,000) 15,268,000
Change in valuation allowance 2,495,000 26,838,000 68,596,000
Other (682,000) 6,027,000 2,454,000
Provision for income taxes 69,854,000 34,860,000 26,313,000
Income resulting from tax holidays and tax incentives 9,800,000 15,200,000 22,600,000
Expiration date of existing holidays 2022    
Tax effect of foreign income not repatriated to Singapore $ 0 $ 51,500,000 $ 26,700,000
Effect on basic loss per share due to income resulting from tax holidays and tax incentives (in dollars per share) $ 0.02 $ 0.02 $ 0.03
Effect on diluted loss per share due to income resulting from tax holidays and tax incentives (in dollars per share) $ 0.02 $ 0.02 $ 0.03