Balance Sheet Details (Tables)

3 Months Ended

Mar. 31, 2017

Balance Sheet Related Disclosures [Abstract]

Schedule of inventories

	March 31, 2017			December 31, 2016
Raw materials and purchased parts	$	12,176		$	12,980
Work-in-process	1,616			858
Finished goods	17,737			19,492
Reserves	(1,113		)	(1,082		)
Total inventories, net	$	30,416		$	32,248

Schedule of activity in the warranty reserve

Activity in the warranty reserve, which is included in “accounts payable and accrued liabilities” in the condensed consolidated balance sheets, is as follows:

	Three Months Ended March 31,
	2017			2016
Beginning balance	$	1,213		$	1,288
Product warranties issued	137			213
Settlement of warranties	(104		)	(226		)
Changes related to preexisting warranties	52			(69		)
Ending balance	$	1,298		$	1,206

Schedule of change in the carrying amount of goodwill

The change in the carrying amount of goodwill from December 31, 2016 to March 31, 2017 is as follows:

Balance at December 31, 2016	$	22,799
Foreign currency translation adjustments	371
Balance at March 31, 2017	$	23,170

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, 2016	$	7,826	$	(2,426	)	$	5,400
Other comprehensive income before reclassification	1,312		—			1,312
Amounts reclassified from accumulated other comprehensive income	—		29			29		Cost of Sales, Selling, General and Administrative and Research and Development Expense
Net other comprehensive income for the three months ended March 31, 2017	1,312		29			1,341
Balance as of March 31, 2017	$	9,138	$	(2,397	)	$	6,741