Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Intangible Assets

Schedule of gross carrying amount and related accumulated amortization of the intangible assets

The following sets forth the gross carrying amount and related accumulated amortization of these intangible assets, in thousands:

			December 31, 2015				December 31, 2014
	Weighted- Average Life		Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Purchased patents		10.0	$	2,292	$	2,292	$	2,292	$	2,067
Capitalized patent defense costs		9.5	$	994	$	18	$	—	$	—