Deferred Revenue (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Summary of Deferred Service Contract Revenue

The following table provides changes in the deferred revenue balance for the three months ended March 31, 2022 and 2021 (in thousands):

	Three Months Ended March 31,
	2022		2021
Beginning balance	$	10,825	$	11,237
Add: Payments received	4,864		4,929
Less: Revenue	(458)		(445)
Less: Revenue recognized from beginning balance	(4,167)		(3,984)
Ending balance	$	11,064	$	11,737