Balance Sheet Details (Tables)

9 Months Ended

Sep. 30, 2014

Balance Sheet Related Disclosures [Abstract]

Schedule of inventories

	September 30, 2014		December 31, 2013
Raw materials and purchased parts	$	23,966	$	16,723
Work-in-process	2,285		2,374
Finished goods	23,455		23,149
Consigned finished goods	2,303		2,490
Total inventories	$	52,009	$	44,736

Schedule of change in the carrying amount of goodwill

The change in the carrying amount of goodwill from December 31, 2013 to September 30, 2014 is as follows:

Balance at December 31, 2013	$	25,978
Foreign currency translation adjustments	(1,516		)
Balance at September 30, 2014	$	24,462

Schedule of accumulated other comprehensive income

	Foreign Currency Translation Adjustment			Defined Benefit Pension Plan			Accumulated Other Comprehensive Income			Affected Line Items in the Statement of Operations
Balance as of December 31, 2013	$	18,804		$	(1,681	)	$	17,123
Other comprehensive income before reclassification	(6,487		)	—			(6,487		)
Amounts reclassified from accumulated other comprehensive income	—			86			86			Cost of Sales, Selling, General and Administrative and Research and Development Expense
Net other comprehensive income for the nine months ended September 30, 2014	(6,487		)	86			(6,401		)
Balance as of September 30, 2014	$	12,317		$	(1,595	)	$	10,722