Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets Activity Summary

Intangible assets are summarized as follows (in thousands):

	September 30, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortized intangible assets
Licenses	$	1,414	$	(1,166	)	$	248	$	1,414	$	(1,066	)	$	348
Patents and know how	9,093		(4,908		)	4,185		9,180		(4,475		)	4,705
Customer and supplier relationships	3,761		(2,351		)	1,410		4,271		(2,202		)	2,069
Non-compete agreements	120		(60		)	60		120		(38		)	82
Total amortized intangible assets	$	14,388	$	(8,485	)	$	5,903	$	14,985	$	(7,781	)	$	7,204
Unamortized intangible assets
Trade names and trademarks	$	1,008				$	1,008	$	1,008				$	1,008
Patents in process	1,041					1,041		1,396					1,396
Total intangible assets	$	16,437				$	7,952	$	17,389				$	9,608

Estimated Future Amortization Expense for Intangible Assets

Expected future amortization of intangible assets as of September 30, 2019, is as follows (in thousands):

Year ending December 31,	Estimated Amortization Expense
2019 (excluding the nine months ended September 30, 2019)	$	246
2020	985
2021	977
2022	955
2023	954
Thereafter	1,786
	$	5,903