Intangibles (Tables)

6 Months Ended

Jun. 30, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Amortization of Intangible Assets Acquired

Amortization of intangible assets acquired is calculated using the straight-line method over the estimated useful lives of the assets.

	June 30, 2016			December 31, 2015
Capitalized patent costs	$	6,971		$	6,779
Intangible assets acquired:
Purchased patents and intellectual property		250			250
Existing technology		1,560			1,560
Customer relationships		290			290
Backlog		760			760
Tradenames		290			290
Non-solicitation agreements		120			120
Gross intangible assets		10,241			10,049
Accumulated amortization		(3,772	)		(3,436	)
Intangibles, net	$	6,469		$	6,613