Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2018

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities consist of the following:

	As of September 30, 2018		As of December 31, 2017
Accrued compensation and benefits	$	14,617	$	16,144
Accrued warranties	2,605		2,628
Professional and legal fees	2,088		1,541
Taxes other than income	2,922		3,787
Other accrued liabilities	6,954		3,262
	$	29,186	$	27,362

Schedule of Activity Related to Accrued Warranties

Activity related to accrued warranties was as follows:

	Nine Months Ended
	September 30, 2018			September 30, 2017
Balance, beginning of period	$	2,628		$	2,594
Provision for warranty expense	2,888			2,606
Fulfillment of warranty obligations	(2,911		)	(2,616		)
Balance, end of period	$	2,605		$	2,584