Intangibles

9 Months Ended

Sep. 30, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Intangibles

10. Intangibles

Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. No impairment charges were recorded for the nine months ended September 30, 2021 and 2020.

Patent costs associated with the application and award of patents in the U.S. and various other countries are capitalized and amortized on a straight-line basis over the term of the patents as determined at the award date, which varies depending on the pendency period of the application, generally approximating seventeen years.

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)	2021			2020
Capitalized patent costs	17-20	$	10,082		$	9,708
Intangible assets acquired:
Purchased patents and intellectual property	3-10		250			250
Existing technology	5		1,560			1,560
Customer relationships	7		290			290
Gross intangible assets			12,182			11,808
Accumulated amortization			(5,568	)		(5,196	)
Intangibles, net		$	6,614		$	6,612