Accrued Liabilities

12 Months Ended

Dec. 31, 2021

Payables and Accruals [Abstract]

Accrued Liabilities

ACCRUED LIABILITIES

Accrued liabilities consist of the following:

	As of December 31,
	2021		2020
Accrued compensation and benefits	$	15,723	$	17,457
Accrued restructuring costs	3,919		2,347
Accrued warranties	1,880		1,683
Professional and legal fees	2,053		1,810
Taxes other than income	3,674		5,013
General services administration contract contingent liability (see Note 12)	—		12,325
Other accrued liabilities	959		1,958
	$	28,208	$	42,593

Activity related to accrued warranties was as follows:

	Years ended December 31,
	2021		2020		2019
Balance, beginning of year	$	1,683	$	2,090	$	2,571
Provision for warranty expense	2,851		2,727		3,600
Fulfillment of warranty obligations	(2,654)		(3,134)		(4,081)
Balance, end of year	$	1,880	$	1,683	$	2,090