Product Warranties (Tables)

12 Months Ended

Dec. 31, 2022

Guarantees and Product Warranties [Abstract]

Product Warranty Activity

Product warranty activity for the years ended December 31 was as follows (in thousands):

	2022			2021			2020
Balance at the beginning of the period	$	292		$	308		$	372
Accruals for warranties for products sold in the period		376			158			366
Fulfillment of warranty obligations		(131	)		(151	)		(398	)
Revisions of estimated obligations		(40	)		(23	)		(32	)
Balance at the end of the period	$	497		$	292		$	308