CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2011
ASSETS
Cash and cash equivalents	$ 635,755	$ 703,924
Short-term investments	823,254	539,572
Accounts receivable, net	170,201	181,202
Inventories	217,278	180,800
Prepaid expenses	25,658	22,234
Deferred tax assets	91,191	88,822
Other current assets	52,524	58,429
Total current assets	2,015,861	1,774,983
Property, plant and equipment, net	516,611	540,513
Long-term investments	328,586	464,838
Goodwill	93,513	76,018
Intangible assets, net	90,436	77,929
Other assets	38,769	33,777
Total assets	3,083,776	2,968,058
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	50,287	68,433
Accrued liabilities	88,877	131,839
Deferred income on shipments to distributors	108,709	140,044
Total current liabilities	247,873	340,316
Junior convertible debentures	355,050	347,334
Long-term income tax payable	70,490	58,125
Deferred tax liability	411,368	399,527
Other long-term liabilities	8,322	10,318
Stockholders' equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued or outstanding.	0	0
Common stock, $0.001 par value; 450,000,000 shares authorized; 218,789,994 shares issued and 193,150,532 shares outstanding at March 31, 2012; 218,789,994 shares issued and 189,541,707 shares outstanding at March 31, 2011	193	190
Additional paid-in capital	1,268,907	1,268,128
Common stock held in treasury: 25,639,462 shares at March 31, 2012; 29,248,287 shares at March 31, 2011	(780,893)	(888,075)
Accumulated other comprehensive income	3,101	3,357
Retained earnings	1,499,365	1,428,838
Total stockholders' equity	1,990,673	1,812,438
Total liabilities and stockholders' equity	$ 3,083,776	$ 2,968,058