Other Financial Statement Data (Tables)

12 Months Ended

Dec. 31, 2013

Other Financial Statement Data [Abstract]

Schedule Of Inventory Components

	December 31,
(In thousands)	2013		2012
Raw materials and purchased parts	$	6,690	$	8,152
Work in process		1,135		1,322
Finished goods		3,506		3,059
Total inventories	$	11,331	$	12,533

Schedule Of Equipment And Leasehold Improvements

	December 31,
(In thousands)	2013		2012
Equipment	$	10,265	$	10,800
Leasehold improvements		1,598		1,538
		11,863		12,338
Accumulated depreciation and amortization		(10,591)		(10,619)
	$	1,272	$	1,719

Schedule Of Intangible Assets

	December 31, 2013						December 31, 2012
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Patents	$	2,915	$	(2,779)	$	136	$	2,847	$	(2,658)	$	189

Schedule Of Amortization Expense For Intangible Assets

	Years Ended December 31,
(In thousands)	2013		2012
Patents	$	121	$	154

Schedule of Accrued Expenses

	December 31,
(In thousands)	2013		2012
Wages and benefits	$	862	$	770
Warranty liability		513		694
Restructuring and severance costs		511		192
Other		355		184
	$	2,241	$	1,840

Schedule Of Changes In Estimated Warranty Liability

	Year Ended December 31,
(In thousands)	2013		2012
Balance at beginning of period	$	694	$	985
Accrual for warranties		642		745
Warranty revision		(5)		(2)
Settlements made during the period		(818)		(1,034)
Balance at end of period	$	513	$	694

Schedule Of Changes In Deferred Warranty Revenue

	Year Ended December 31,
(In thousands)	2013		2012
Balance at beginning of period	$	582	$	806
Revenue deferrals		299		230
Amortization of deferred revenue		(437)		(454)
Total deferred warranty revenue		444		582
Current portion of deferred warranty revenue		(279)		(436)
Long-term deferred warranty revenue	$	165	$	146