Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets activity summary - finite lived

Intangible assets are summarized as follows (in thousands):

	December 31, 2018							December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortized intangible assets
Licenses	$	1,414	$	(1,066	)	$	348	$	1,009	$	(1,009	)	$	—
Patents and know how	9,180		(4,475		)	4,705		8,732		(3,840		)	4,892
Customer and supplier relationships	4,271		(2,202		)	2,069		4,271		(1,891		)	2,380
Non-compete agreements	120		(38		)	82		120		(8		)	112
Total amortized intangible assets	$	14,985	$	(7,781	)	$	7,204	$	14,132	$	(6,748	)	$	7,384
Unamortized intangible assets
Trade names and trademarks	$	1,008				$	1,008	$	1,008				$	1,008
Patents in process	1,396					1,396		1,641					1,641
Total intangible assets	$	17,389				$	9,608	$	16,781				$	10,033

Intangible assets activity summary - indefinite lived

Intangible assets are summarized as follows (in thousands):

	December 31, 2018							December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortized intangible assets
Licenses	$	1,414	$	(1,066	)	$	348	$	1,009	$	(1,009	)	$	—
Patents and know how	9,180		(4,475		)	4,705		8,732		(3,840		)	4,892
Customer and supplier relationships	4,271		(2,202		)	2,069		4,271		(1,891		)	2,380
Non-compete agreements	120		(38		)	82		120		(8		)	112
Total amortized intangible assets	$	14,985	$	(7,781	)	$	7,204	$	14,132	$	(6,748	)	$	7,384
Unamortized intangible assets
Trade names and trademarks	$	1,008				$	1,008	$	1,008				$	1,008
Patents in process	1,396					1,396		1,641					1,641
Total intangible assets	$	17,389				$	9,608	$	16,781				$	10,033

Estimated future amortization expense of intangible assets

Expected future amortization of intangible assets as of December 31, 2018, is as follows (in thousands):

	Estimated
	Amortization
Year ending December 31,	Expense
2019	$	976
2020	976
2021	969
2022	946
2023	946
Thereafter	2,391
	$	7,204

Changes in carrying amount of goodwill

The following represents the changes in the carrying amount of goodwill 2018 and 2017 (in thousands):

	Goodwill
Balance as of January 1, 2017	$	20,203
Divestment of Stability	(227		)
Balance as of December 31, 2017	19,976
Activity	—
Balance as of December 31, 2018	$	19,976