CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
ASSETS
Cash and cash equivalents	$ 528,334	$ 635,755
Short-term investments	1,050,263	823,254
Accounts receivable, net	229,955	170,201
Inventories	242,334	217,278
Prepaid expenses	37,439	25,658
Deferred tax assets	80,687	91,191
Other current assets	67,358	52,524
Total current assets	2,236,370	2,015,861
Property, plant and equipment, net	514,544	516,611
Long-term investments	257,450	328,586
Goodwill	271,348	93,513
Intangible assets, net	530,136	90,436
Other assets	41,557	38,769
Total assets	3,851,405	3,083,776
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	75,551	50,287
Accrued liabilities	127,108	88,877
Deferred income on shipments to distributors	138,952	108,709
Total current liabilities	341,611	247,873
Junior convertible debentures	363,385	355,050
Long-term line of credit	620,000	0
Long-term income tax payable	182,723	70,490
Deferred tax liability	388,250	411,368
Other long-term liabilities	21,966	8,322
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 196,472,856 shares outstanding at March 31, 2013; 218,789,994 shares issued and 193,150,532 shares outstanding at March 31, 2012	196	193
Additional paid-in capital	1,255,627	1,268,907
Common stock held in treasury: 22,317,138 shares at March 31, 2013; 25,639,462 shares at March 31, 2012	(682,220)	(780,893)
Accumulated other comprehensive income	6,935	3,101
Retained earnings	1,352,932	1,499,365
Total stockholders' equity	1,933,470	1,990,673
Total liabilities and stockholders' equity	$ 3,851,405	$ 3,083,776