Other Financial Statement Data (Tables)

12 Months Ended

Dec. 31, 2019

OTHER FINANCIAL STATEMENT DATA [Abstract]

Schedule of Inventory Components

Inventories consist of the following:

	December 31,
(In thousands)	2019		2018
Raw materials and purchased parts	$	9,845	$	8,821
Work in process	1,837		2,446
Finished goods	2,373		2,526
Demonstration inventories, net	1,525		2,370
Total inventories	$	15,580	$	16,163

Schedule of Equipment and Leasehold Improvements

Equipment and leasehold improvements consist of the following:

	December 31,
(In thousands)	2019			2018
Equipment	$	14,742		$	14,983
Leasehold improvements	2,987			2,052
	17,729			17,035
Accumulated depreciation and amortization	(14,388		)	(14,174		)
	$	3,341		$	2,861

Schedule of Intangible Assets

Intangible assets consist of the following:

	December 31, 2019						December 31, 2018
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization			Net
Patents	$	2,898	$	(2,662)	$	236	$	2,754	$	(2,533	)	$	221
Software		206	(170)		36		206		(141		)	65
Marketing assets and customer relationships		101	(63)		38		101		(54		)	47
Non-compete agreements		101	(101)		—		101		(101		)	—
	$	3,306	$	(2,996)	$	310	$	3,162	$	(2,829	)	$	333

Schedule of Amortization Expense for Intangible Assets

Amortization expense in 2019 and 2018 was as follows:

	Year Ended December 31,				Weighted Avg. Remaining Life-Years at December 31, 2019
(In thousands)	2019		2018
Patents	$	134	$	113	1.6
Software	29		30		1.2
Marketing assets and customer relationships	9		9		4.2
Non-compete agreements	—		5		-
	$	172	$	157

Schedule of Accrued Expenses

Accrued expenses consist of the following:

	December 31,
(In thousands)	2019		2018
Wages and benefits	$	1,319	$	2,166
Warranty liability	761		758
Income taxes payable	333		393
Other	159		251
	$	2,572	$	3,568

Other Noncurrent Liabilities

Other liabilities consist of the following:

	December 31,
(In thousands)	2019		2018
Deferred rent	$	—	$	521
Warranty liability	37		31
Contract liabilities	84		73
Deferred warranty revenue	81		4
	$	202	$	629

Schedule of Changes in Estimated Warranty Liability

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

	Year Ended December 31,
(In thousands)	2019			2018
Balance at beginning of period	$	789		$	767
Accrual for warranties	815			619
Warranty revision	186			(34		)
Settlements made during the period	(992		)	(563		)
Balance at end of period	798			789
Current portion of estimated warranty liability	(761		)	(758		)
Long-term estimated warranty liability	$	37		$	31

Schedule of Changes in Deferred Warranty Revenue

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

	Year Ended December 31,
(In thousands)	2019			2018
Balance at beginning of period	$	218		$	259
Revenue deferrals	488			376
Amortization of deferred revenue	(431		)	(417		)
Total deferred warranty revenue	275			218
Current portion of deferred warranty revenue	(194		)	(214		)
Long-term deferred warranty revenue	$	81		$	4