Other Financial Statement Data (Tables)

3 Months Ended

Mar. 31, 2022

Balance Sheet Related Disclosures [Abstract]

Schedule of Inventories

Inventories consisted of the following:

(In thousands)	March 31, 2022		December 31, 2021
Raw materials and purchased parts	$	19,301	$	18,013
Work in process	1,703		1,655
Finished goods	7,681		6,859
Demonstration inventories, net	1,363		1,075
Total inventories	$	30,048	$	27,602

Schedule of Accrued Liabilities

Accrued expenses consisted of the following:  

(In thousands)	March 31, 2022		December 31, 2021
Wages and benefits	$	1,936	$	2,966
Warranty liability	1,027		949
Income taxes payable	519		341
Other	118		162
Total accrued expenses	$	3,600	$	4,418

Schedule of Changes In Estimated Warranty Liability

A reconciliation of the changes in our estimated warranty liability is as follows:

	Three Months Ended March 31,
(In thousands)	2022			2021
Balance at beginning of period	$	991		$	839
Accrual for warranties	261			272
Warranty revision	64			(40		)
Settlements made during the period	(233		)	(181		)
Balance at end of period	1,083			890
Current portion of estimated warranty liability	(1,027		)	(851		)
Long-term estimated warranty liability	$	56		$	39

Schedule of Changes In Deferred Warranty Revenue

A reconciliation of the changes in our deferred warranty revenue is as follows:

	Three Months Ended March 31,
(In thousands)	2022			2021
Balance at beginning of period	$	445		$	344
Revenue deferrals	124			147
Amortization of deferred revenue	(121		)	(106		)
Total deferred warranty revenue	448			385
Current portion of deferred warranty revenue	(317		)	(281		)
Long-term deferred warranty revenue	$	131		$	104