Intangibles (Tables)

9 Months Ended

Sep. 30, 2017

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.

	Estimated Life	September 30,			December 31,
	(years)	2017			2016
Capitalized patent costs	17-20	$	7,794		$	7,281
Intangible assets acquired:
Purchased patents and intellectual property	3-10		250			250
Existing technology	5		1,560			1,560
Customer relationships	7		290			290
Backlog	2		760			760
Tradenames	3		290			290
Non-solicitation agreements	1		120			120
Gross intangible assets			11,064			10,551
Accumulated amortization			(4,695	)		(4,129	)
Intangibles, net		$	6,369		$	6,422