Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2013

Intangible Assets [Abstract]

Schedule Of Intangible Assets

	September 30, 2013						December 31, 2012
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Patents	$	2,887	$	(2,754)	$	133	$	2,847	$	(2,658)	$	189

Schedule Of Amortization Expense For Intangible Assets

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands)	2013		2012		2013		2012
Patents	$	30	$	39	$	95	$	117