Balance Sheet Details (Tables)

9 Months Ended

Sep. 30, 2017

Balance Sheet Related Disclosures [Abstract]

Schedule of inventories

	September 30, 2017			December 31, 2016
Raw materials and purchased parts	$	13,291		$	12,980
Work-in-process	3,037			858
Finished goods	17,463			19,492
Reserves	(2,192		)	(1,082		)
Total inventories, net	$	31,599		$	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:

	Nine Months Ended September 30,
	2017			2016
Beginning balance	$	1,213		$	1,288
Acquired liability from Nesscap	773			—
Product warranties issued	352			298
Settlement of warranties	(300		)	(427		)
Changes related to preexisting warranties	253			146
Ending balance	$	2,291		$	1,305

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	3,197		—			3,197
Amounts reclassified from accumulated other comprehensive income	—		91			91		Cost of Sales, Selling, General and Administrative and Research and Development Expense
Net other comprehensive income for the nine months ended September 30, 2017	3,197		91			3,288
Balance as of September 30, 2017	$	11,023	$	(2,335	)	$	8,688