CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 96,961	$ 83,601
Investments-short-term	124,391	106,846
Receivables	124,620	96,381
Inventory	43,483	39,759
Prepaid expenses and other current assets	19,133	12,566
Total current assets	408,588	339,153
PROPERTY, PLANT AND EQUIPMENT, NET	288,435	302,995
INTANGIBLE ASSETS-NET	575,993	617,845
GOODWILL	92,740	92,740
INVESTMENTS-LONG-TERM	82,827	55,691
OTHER ASSETS	21,708	26,793
TOTAL ASSETS	1,470,291	1,435,217
CURRENT LIABILITIES:
Accounts payable and accrued expenses	76,910	79,154
Deferred revenue-current	2,270	6,910
Long-term debt-current	6,750	3,100
Total current liabilities	85,930	89,164
LONG-TERM DEBT	362,258	441,360
DEFERRED REVENUE-LONG-TERM	8,866	7,578
DEFERRED TAX LIABILITIES, NET-LONG-TERM	37,603	34,512
OTHER LONG-TERM LIABILITIES	23,260	8,751
Total liabilities	517,917	581,365
COMMITMENTS AND CONTINGENCIES (Note 18)
SHAREHOLDERS' EQUITY:
Preferred stock, par value, $0.01 per share; 50,000,000 shares authorized; zero issued and outstanding at March 31, 2013 and 2012, respectively
Ordinary shares, par value, $0.01 per share; 450,000,000 shares authorized; 134,065,107 and 130,212,530 shares issued; 133,751,610 and 130,177,452 shares outstanding at March 31, 2013 and 2012, respectively	1,338	1,300
Treasury stock, at cost (313,497 and 35,078 shares at March 31, 2013 and 2012, respectively)	(5,380)	(571)
Additional paid-in capital	1,458,857	1,380,742
Accumulated other comprehensive loss	(2,518)	(2,713)
Accumulated deficit	(499,923)	(524,906)
Total shareholders' equity	952,374	853,852
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,470,291	$ 1,435,217