BALANCE SHEET DETAILS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Inventories
Raw materials and purchased parts	$ 23,415	$ 12,689
Work-in-progress	251,933	158,599
Finished goods	102,085	105,362
Total inventories	377,433	276,650
Prepaids and other current assets
Deferred income tax assets	10,239	39,295
Prepaid income taxes	16,441	24,193
Value-added tax receivable	24,971	6,305
Income tax receivable	17,000	1,553
Other	48,278	52,274
Total prepaids and other current assets	116,929	123,620
Other assets
Deferred income tax assets, net of current portion	121,417	140,562
Investments in privately-held companies	12,208	12,030
Auction-rate securities	2,251	2,251
Other	5,595	9,621
Total other assets	$ 141,471	$ 164,464