Commitment and Contingencies (Tables)

9 Months Ended

Sep. 30, 2021

Commitments and Contingencies Disclosure [Abstract]

Schedule of product warranty liability

The table below represents the activity in the product warranty accrual included in accrued expenses and other current liabilities on the condensed consolidated balance sheets (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020
Balance, beginning of period	$	1,190	$	1,184	$	1,271	$	1,065
Adjustments to existing warranties	(46)		(349)		(412)		(562)
Provision for new warranties	354		410		971		960
Settlement of pre-existing warranties	(209)		(181)		(541)		(399)
Balance, end of period	$	1,289	$	1,064	$	1,289	$	1,064