Other Financial Statement Data (Tables)

12 Months Ended

Dec. 31, 2012

Other Financial Statement Data [Abstract]

Schedule Of Inventory Components

	December 31,
(In thousands)	2012		2011
Raw materials and purchased parts	$	8,152	$	6,893
Work in process		1,322		1,007
Finished goods		3,059		3,152
Total inventories	$	12,533	$	11,052

Schedule Of Equipment And Leasehold Improvements

	December 31,
(In thousands)	2012		2011
Equipment	$	10,800	$	10,257
Leasehold improvements		1,538		1,471
		12,338		11,728
Accumulated depreciation and amortization		(10,619)		(10,328)
	$	1,719	$	1,400

Schedule Of Intangible Assets

	December 31, 2012						December 31, 2011
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Developed technology	$	7,775	$	(7,775)	$	—	$	7,775	$	(7,775)	$	—
Patents		2,847		(2,658)		189		2,734		(2,504)		230
	$	10,622	$	(10,433)	$	189	$	10,509	$	(10,279)	$	230

Schedule Of Amortization Expense For Intangible Assets

	Years Ended December 31,
(In thousands)	2012		2011
Developed technology	$	—	$	108
Patents		154		200
	$	154	$	308

Schedule of Accrued Expenses

	December 31,
(In thousands)	2012		2011
Wages and benefits	$	770	$	1,741
Warranty liability		694		985
Re-organization and restructure charge		192		—
Income taxes payable		—		122
Unrealized loss on foreign exchange forward contracts		—		493
Other		184		316
	$	1,840	$	3,657

Schedule Of Changes In Estimated Warranty Liability

	Year Ended December 31,
(In thousands)	2012		2011
Balance at beginning of period	$	985	$	702
Accrual for warranties		745		1,273
Warranty revision		(2)		(15)
Settlements made during the period		(1,034)		(975)
Balance at end of period	$	694	$	985

Schedule Of Changes In Deferred Warranty Revenue

	Year Ended December 31,
(In thousands)	2012		2011
Balance at beginning of period	$	806	$	787
Revenue deferrals		230		489
Amortization of deferred revenue		(454)		(470)
Total deferred warranty revenue		582		806
Current portion of deferred warranty revenue		(436)		(453)
Long-term deferred warranty revenue	$	146	$	353