Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in carrying amount of goodwill

The following represents the changes in the carrying amount of goodwill for 2020 and 2019 (in thousands):

	Goodwill
Balance as of January 1, 2019	$	19,976
Activity	—
Balance as of December 31, 2019	19,976
Activity	—
Balance as of December 31, 2020	$	19,976

Intangible assets activity summary - finite lived

Intangible assets are summarized as follows (in thousands):

	December 31, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortized intangible assets
Licenses	$	1,414	$	(1,334)	$	80	$	1,414	$	(1,200)	$	214
Patents and know-how	9,510		(5,730)		3,780		9,099		(5,070)		4,029
Customer and supplier relationships	241		(172)		69		3,761		(2,417)		1,344
Non-compete agreements	120		(98)		22		120		(68)		52
Total amortized intangible assets	$	11,285	$	(7,334)	$	3,951	$	14,394	$	(8,755)	$	5,639
Unamortized intangible assets
Tradenames and trademarks	$	1,008			$	1,008	$	1,008			$	1,008
Patents in process	1,045				1,045		1,130				1,130
Total intangible assets	$	13,338			$	6,004	$	16,532			$	7,777

Amortization expense for the years ended December 31, 2020, 2019, and 2018, is summarized in the table below (amounts in thousands):

	Year ended December 31,
	2020		2019		2018
Amortization of intangible assets	$	1,073	$	1,039	$	1,034
Impairment of intangible assets	1,027		1,258		—

Intangible assets activity summary - indefinite lived

Intangible assets are summarized as follows (in thousands):

	December 31, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortized intangible assets
Licenses	$	1,414	$	(1,334)	$	80	$	1,414	$	(1,200)	$	214
Patents and know-how	9,510		(5,730)		3,780		9,099		(5,070)		4,029
Customer and supplier relationships	241		(172)		69		3,761		(2,417)		1,344
Non-compete agreements	120		(98)		22		120		(68)		52
Total amortized intangible assets	$	11,285	$	(7,334)	$	3,951	$	14,394	$	(8,755)	$	5,639
Unamortized intangible assets
Tradenames and trademarks	$	1,008			$	1,008	$	1,008			$	1,008
Patents in process	1,045				1,045		1,130				1,130
Total intangible assets	$	13,338			$	6,004	$	16,532			$	7,777

Estimated future amortization expense of intangible assets

Expected future amortization of intangible assets as of December 31, 2020, is as follows (in thousands):

	Estimated
	Amortization
Year ending December 31,	Expense
2021	$	793
2022	691
2023	691
2024	691
2025	279
Thereafter	806
	$	3,951