CONSOLIDATED FINANCIAL STATEMENT DETAILS (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Other income (expense), net
Interest income	$ 886	$ 1,302
Interest expense	(1,347)	(1,355)
Gain on sales of investments	1,764	846
Other	106	(41)
Other income, net	$ 1,409	$ 752