Intangible Assets

3 Months Ended

Mar. 31, 2019

Intangible Assets [Abstract]

Intangible Assets

Note 10.  Intangible Assets

The following table provides the components of identifiable intangible assets, all of which are finite lived:

	March 31,			December 31,
	2019			2018
Purchase technology-based intangible	$	2,358		$	2,358
Purchased patent		509			509
		2,867			2,867
Less: accumulated amortization		(2,676	)		(2,663	)
Intangible assets, net	$	191		$	204

Amortization expense was $13 for each of the three-month periods ended March 31, 2019 and 2018. During the remaining life of the purchased patent, estimated annual amortization expense is $50 for each of the years from 2019 to 2022.