Balance Sheet Details (Schedule of Accumulated Other Comprehensive Income) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 31, 2016	$ 100,822
Balance as of March 31, 2017	94,075
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 31, 2016	5,400
Other comprehensive income before reclassification	1,312
Amounts reclassified from accumulated other comprehensive income	29
Net other comprehensive income for the three months ended March 31, 2017	1,341
Balance as of March 31, 2017	6,741
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 31, 2016	7,826
Other comprehensive income before reclassification	1,312
Amounts reclassified from accumulated other comprehensive income	0
Net other comprehensive income for the three months ended March 31, 2017	1,312
Balance as of March 31, 2017	9,138
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 31, 2016	(2,426)
Other comprehensive income before reclassification	0
Amounts reclassified from accumulated other comprehensive income	29
Net other comprehensive income for the three months ended March 31, 2017	29
Balance as of March 31, 2017	$ (2,397)