Inventories And Warranties (Tables)

9 Months Ended

Sep. 30, 2013

Inventories And Warranties [Abstract]

Schedule Of Inventory Components

(In thousands)	September 30, 2013		December 31, 2012
Raw materials and purchased parts	$	7,287	$	8,152
Work in process		1,549		1,322
Finished goods		3,621		3,059
Total inventories	$	12,457	$	12,533

Schedule Of Changes In Estimated Warranty Liability

	Nine Months Ended September 30,
(In thousands)	2013		2012
Balance at beginning of period	$	694	$	985
Accrual for warranties		418		616
Warranty revision		4		(14)
Settlements made during the period		(619)		(765)
Balance at end of period	$	497	$	822

Schedule Of Changes In Deferred Warranty Revenue

	Nine Months Ended September 30,
(In thousands)	2013		2012
Balance at beginning of period	$	582	$	806
Revenue deferrals		253		181
Amortization of deferred revenue		(355)		(336)
Total deferred warranty revenue		480		651
Current portion of deferred warranty revenue		(283)		(462)
Long-term deferred warranty revenue	$	197	$	189