Revenue and Deferred Revenue (Tables)

3 Months Ended

Mar. 31, 2022

Revenue Recognition and Deferred Revenue [Abstract]

Deferred Revenue Activity

Deferred revenue activity for the period ended March 31, 2022 and December 31, 2021 are as follows (in thousands):

	March 31,		December 31,
	2022		2021
Balance, beginning of period	$	376	$	250
Additions	167		376
Revenue recognized	(149)		(250)
Balance, end of period	$	394	$	376