Balance Sheet Details (Schedule of Accumulated Other Comprehensive Income) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 31, 2015	$ 119,176
Balance as of September 30, 2016	112,890
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 31, 2015	4,894
Other comprehensive income before reclassification	1,557
Amounts reclassified from accumulated other comprehensive income	236
Net other comprehensive income for the nine months ended September 30, 2016	1,793
Balance as of September 30, 2016	6,687
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 31, 2015	9,933
Other comprehensive income before reclassification	1,557
Amounts reclassified from accumulated other comprehensive income	0
Net other comprehensive income for the nine months ended September 30, 2016	1,557
Balance as of September 30, 2016	11,490
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 31, 2015	(5,039)
Other comprehensive income before reclassification	0
Amounts reclassified from accumulated other comprehensive income	236
Net other comprehensive income for the nine months ended September 30, 2016	236
Balance as of September 30, 2016	$ (4,803)