Balance Sheet Details (Accumulated other comprehensive income) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Accumulated other comprehensive income
Balance at December 31, 2014	$ 4,723
Other comprehensive income before reclassification	1,574
Amounts reclassified from accumulated other comprehensive income (loss)	(1,403)
Net other comprehensive income for the year ended December 31, 2015	171
Balance at December 31, 2015	4,894
Foreign Currency Translation Adjustment
Accumulated other comprehensive income
Balance at December 31, 2014	8,359
Other comprehensive income before reclassification	1,574
Amounts reclassified from accumulated other comprehensive income (loss)	0
Net other comprehensive income for the year ended December 31, 2015	1,574
Balance at December 31, 2015	9,933
Defined Benefit Pension Plan
Accumulated other comprehensive income
Balance at December 31, 2014	(3,636)
Other comprehensive income before reclassification	0
Amounts reclassified from accumulated other comprehensive income (loss)	(1,403)
Net other comprehensive income for the year ended December 31, 2015	(1,403)
Balance at December 31, 2015	$ (5,039)