Intangible Assets

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]


5.	Intangible Assets

The gross carrying amounts and accumulated amortization of the Company’s intangible assets with determinable lives as of December 31, 2023 and 2022 were as follows (in thousands):


	December 31, 2023
	Gross carrying amount		Accumulated amortization			Intangible assets, net
Intangible assets with finite lives:
Technological know-how	$	430	$	(290	)	$	140
Computer software		171		(106	)		65
Total intangible assets	$	601	$	(396	)	$	205


	December 31, 2022
	Gross carrying amount		Accumulated amortization			Intangible assets, net
Intangible assets with finite lives:
Patents	$	1,496	$	(1,372	)	$	124
Technological know-how		438		(277	)		161
Computer software		104		(92	)		12
Total intangible assets	$	2,038	$	(1,741	)	$	297

Intangible assets are carried at cost less accumulated amortization and impairment, if applicable, and the amortization expense is recorded in operating expenses. The weighted average amortization period for the intangible assets as of December 31, 2023 is 5.05 years.

Amortization expense was $0.1 million and $0.2 million for each of the years ended December 31, 2023, and 2022, respectively. Based on finite-lived intangible assets recorded as of December 31, 2023, the estimated future amortization expense is as follows (in thousands):


	Estimated Amortization Expense
2024	$	34
2025		34
2026		34
2027		33
2028		18
Thereafter		52
Total	$	205