Intangible Assets

3 Months Ended

Mar. 31, 2013

Intangible Assets [Abstract]

Intangible Assets

7.  INTANGIBLE ASSETS:

Intangible assets consist of the following:

	March 31, 2013						December 31, 2012
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Patents	$	2,866	$	(2,692)	$	174	$	2,847	$	(2,658)	$	189

Amortization expense for the three month periods ended March 31, 2013 and 2012 is as follows:

	Three Months Ended March 31,
(In thousands)	2013		2012
Patents	$	34	$	41

Intangible and other long lived assets are reviewed for impairment when events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable.  An impairment loss would be recognized when future undiscounted cash flows expected to result from use of the asset and eventual disposition are less than the carrying amount.

Amortization of patents has been classified as research and development expense in the accompanying statement of operations.  Estimated aggregate amortization expense based on current intangibles for the next four years is expected to be as follows: $83,000 for the remainder of 2013, $65,000 in 2014, $25,000 in 2015, and $1,000 in 2016.