SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 8) (USD $)	12 Months Ended
	Mar. 31, 2013 segment	Mar. 31, 2012	Mar. 31, 2011
Segment Information
Number of business segments	1
Reclassifications
Reclassification to impairment of long-lived assets	$ 3,346,000	$ 45,800,000
Reclassification from proceeds from the issuance of ordinary shares under share-based compensation arrangements	34,360,000	20,864,000	6,158,000
Reclassification to employee taxes paid related to net share settlement of equity awards	4,809,000	3,676,000	1,414,000
Reclassifications to statement of cash flows
Reclassifications
Reclassification from amortization of acquired intangibles		45,800,000
Reclassification to impairment of long-lived assets		45,800,000
Reclassifications to statement of cash flows | Adjustments
Reclassifications
Reclassification from proceeds from the issuance of ordinary shares under share-based compensation arrangements		(3,700,000)	(1,400,000)
Reclassification to employee taxes paid related to net share settlement of equity awards		3,700,000	1,400,000
Reclassifications to statements of operations and comprehensive income (loss)
Reclassifications
Reclassification from amortization of acquired intangibles		45,800,000
Reclassification to impairment of long-lived assets		$ 45,800,000