Other Financial Statement Data (Tables)

6 Months Ended

Jun. 30, 2021

Balance Sheet Related Disclosures [Abstract]

Schedule of Inventories

Inventories consisted of the following:

(In thousands)	June 30, 2021		December 31, 2020
Raw materials and purchased parts	$	14,106	$	11,903
Work in process	2,103		2,459
Finished goods	5,603		4,208
Demonstration inventories, net	1,454		1,701
Total inventories	$	23,266	$	20,271

Schedule of Accrued Liabilities

Accrued expenses consisted of the following: 

(In thousands)	June 30, 2021		December 31, 2020
Wages and benefits	$	2,873	$	2,768
Warranty liability	920		793
Income taxes payable	208		269
Other	164		63
Total accrued expenses	$	4,165	$	3,893

Schedule of Changes In Estimated Warranty Liability

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

	Six Months Ended June 30,
(In thousands)	2021			2020
Balance at beginning of period	$	839		$	798
Accrual for warranties	527			429
Warranty revision	3			9
Settlements made during the period	(392		)	(474		)
Balance at end of period	977			762
Current portion of estimated warranty liability	(920		)	(729		)
Long-term estimated warranty liability	$	57		$	33

Schedule Of Changes In Deferred Warranty Revenue

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

	Six Months Ended June 30,
(In thousands)	2021			2020
Balance at beginning of period	$	344		$	275
Revenue deferrals	268			231
Amortization of deferred revenue	(221		)	(183		)
Total deferred warranty revenue	391			323
Current portion of deferred warranty revenue	(301		)	(209		)
Long-term deferred warranty revenue	$	90		$	114