Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2013

Intangible Assets [Abstract]

Schedule Of Intangible Assets

	June 30, 2013						December 31, 2012
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Patents	$	2,872	$	(2,723)	$	149	$	2,847	$	(2,658)	$	189

Schedule Of Amortization Expense For Intangible Assets

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2013		2012		2013		2012
Patents	$	31	$	37	$	65	$	78