Intangibles and Other Assets (Tables)

12 Months Ended

Dec. 31, 2015

Intangibles And Other Assets [Abstract]

Schedule of Intangibles and Other Assets

	December 31,
	2015			2014
	(In thousands)
Purchased patents and other purchased intangible assets	$	4,605		$	4,605
Less: Accumulated amortization of purchased patents and other purchased intangibles	(4,599		)	(4,579		)
Purchased patents and other purchased intangible assets, net	6			26
Other assets	258			265
Intangibles and other assets, net	$	264		$	291

Schedule of Amortization of Intangibles

Amortization of intangibles was as follows:

	Year Ended December 31,
	2015		2014		2013
	(In thousands)
Amortization of intangibles	$	20	$	67	$	79

Schedule of Estimated Remaining Annual Amortization Expense for Purchased Patents

The table below includes estimated remaining annual amortization expense for purchased patents as of December 31, 2015.

	Estimated Amortization Expense
	(In thousands)
2016	$	6
Total	$	6