Balance Sheet Details (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Schedule of accumulated other comprehensive income
Accumulated Other Comprehensive Income, Balance as of December 31, 2011			$ 10,630
Accumulated Other Comprehensive Income, Current period change	(3,292)	5,398	(784)	6,234
Accumulated Other Comprehensive Income, Balance as of June 30, 2012	9,846		9,846
Defined Benefit Pension Plan [Member]
Schedule of accumulated other comprehensive income
Defined Benefit Pension Plan, Balance as of December 31, 2011			(3,950)
Defined Benefit Pension Plan, Current period change			110
Defined Benefit Pension Plan, Balance as of June 30, 2012	(3,840)		(3,840)
Foreign Currency Translation Adjustment [Member]
Schedule of accumulated other comprehensive income
Foreign Currency Translation Adjustment, Balance as of December 31, 2011			14,580
Foreign Currency Translation Adjustment, Current period change			(894)
Foreign Currency Translation Adjustment, Balance as of June 30, 2012	$ 13,686		$ 13,686