Intangibles and Other Assets (Tables)

12 Months Ended

Dec. 31, 2012

Intangibles and Other Assets [Abstract]

Schedule of intangibles and other assets

	December 31,
	2012			2011
	(In thousands)
Patents and trademarks	$	26,206		$	23,617
Other assets		192			204
Gross intangibles and other assets		26,398			23,821
Accumulated amortization of patents and trademarks		(10,673	)		(9,768	)
Intangibles and other assets, net	$	15,725		$	14,053

Schedule of amortization of intangibles

	Year ended December 31,
	2012		2011		2010
	(In thousands)
Amortization of Intangibles — excluding impairments or abandonments	$	1,064	$	979	$	810

Schedule of estimated remaining annual amortization expense for issued patents and trademarks

	Estimated Amortization Expense
	(In thousands)
2013	$	1,032
2014		1,006
2015		902
2016		821
2017		695
Thereafter		1,807
Total	$	6,263

Schedule of patents in process

	December 31,
	2012		2011
	(In thousands)
Patents in process	$	9,270	$	8,448