CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013
ASSETS
Cash and cash equivalents	$ 344,202	$ 528,334
Short-term investments	807,709	1,050,263
Accounts receivable, net	230,493	229,955
Inventories	275,124	242,334
Prepaid expenses	34,318	37,439
Deferred tax assets	70,383	80,687
Other current assets	58,677	67,358
Total current assets	1,820,906	2,236,370
Property, plant and equipment, net	518,191	514,544
Long-term investments	829,656	257,450
Goodwill	268,570	271,348
Intangible assets, net	480,679	530,136
Other assets	47,149	41,557
Total assets	3,965,151	3,851,405
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	77,768	75,551
Accrued liabilities	101,701	127,108
Short-term borrowings	8,375	0
Deferred income on shipments to distributors	151,049	138,952
Total current liabilities	338,893	341,611
Junior convertible debentures	367,533	363,385
Long-term line of credit	290,000	620,000
Long-term borrowings, net	340,379	0
Long-term income tax payable	192,007	182,723
Deferred tax liability	379,761	388,250
Other long-term liabilities	38,039	21,966
Stockholders' equity:
Preferred stock, $0.001 par value; authorized 5,000,000 shares; no shares issued or outstanding	0	0
Common stock, $0.001 par value; authorized 450,000,000 shares; 218,789,994 shares issued and 198,362,359 shares outstanding at September 30, 2013; 218,789,994 shares issued and 196,472,856 shares outstanding at March 31, 2013	198	196
Additional paid-in capital	1,255,419	1,255,627
Common stock held in treasury: 20,427,635 shares at September 30, 2013; 22,317,138 shares at March 31, 2013	(626,102)	(682,220)
Accumulated other comprehensive (loss) income	(2,525)	6,935
Retained earnings	1,391,549	1,352,932
Total stockholders' equity	2,018,539	1,933,470
Total liabilities and stockholders' equity	$ 3,965,151	$ 3,851,405