Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities consist of the following:

	As of September 30, 2017		As of December 31, 2016
Accrued compensation and benefits	$	12,347	$	13,649
Accrued warranties	2,584		2,594
Professional and legal fees	1,442		1,775
Taxes other than income	2,697		4,026
Other accrued liabilities	3,437		2,528
	$	22,507	$	24,572

Schedule of Activity Related to Accrued Warranties

Activity related to accrued warranties was as follows:

	Nine Months Ended
	September 30, 2017			September 30, 2016
Balance, beginning of period	$	2,594		$	2,309
Provision for warranty expense	2,606			2,292
Fulfillment of warranty obligations	(2,616		)	(1,925		)
Balance, end of period	$	2,584		$	2,676