Intangible Assets, Net (Tables)

3 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets Activity Summary - Indefinite-lived

Intangible assets, net, are summarized as follows (in thousands):

	March 31, 2022						December 31, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortized intangible assets
Patents and know-how	$	9,657	$	(6,581)	$	3,076	$	9,578	$	(6,408)	$	3,170
Unamortized intangible assets:
Tradenames and trademarks	$	1,008			$	1,008	$	1,008			$	1,008
Patents in Process	1,181				1,181		1,205				1,205
Total intangible assets	$	11,846			$	5,265	$	11,791			$	5,383

Intangible Assets Activity Summary - Finite-lived

Intangible assets, net, are summarized as follows (in thousands):

	March 31, 2022						December 31, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortized intangible assets
Patents and know-how	$	9,657	$	(6,581)	$	3,076	$	9,578	$	(6,408)	$	3,170
Unamortized intangible assets:
Tradenames and trademarks	$	1,008			$	1,008	$	1,008			$	1,008
Patents in Process	1,181				1,181		1,205				1,205
Total intangible assets	$	11,846			$	5,265	$	11,791			$	5,383

Amortization expense for the three months ended March 31, 2022 and 2021 is summarized in the table below (amounts in thousands):

	Three Months Ended March 31,
	2022		2021
Amortization expense	$	172	$	239

Estimated Future Amortization Expense for Intangible Assets

Expected future amortization of intangible assets as of March 31, 2022, is as follows (in thousands):

Year ending December 31,	Estimated Amortization Expense
2022 (excluding the three months ended March 31, 2022)	$	513
2023	684
2024	684
2025	289
2026	134
Thereafter	772
Total amortized intangible assets	$	3,076