Intangible Assets

6 Months Ended

Jun. 30, 2023

Intangible Assets

Intangible Assets

5. Intangible Assets

Intangible assets as of June 30, 2023 and December 31, 2022 consisted of the following:

	Estimated useful lives (years)			June 30, 2023			December 31, 2022
Tradename	5	to	7	$	555		$	555
Patents and technological know-how	10	to	20		7,132			7,053
Proprietary software	3	to	15		2,981			2,981
Other	3	to	5		323			323
Total intangible assets					10,991			10,912
Accumulated amortization					(9,088	)		(8,841	)
Total intangible assets, net				$	1,903		$	2,071

The amortization of intangible assets for the three and six months ended June 30, 2023 and 2022 was as follows: 

	Three months ended June 30,				Six months ended June 30,
	2023		2022		2023		2022
Amortization of intangible assets	$	129	$	682	$	247	$	1,352

The estimated future amortization expense of intangible assets is as follows:

Years ending December 31,	Amount
2023 (Remainder)	$	269
2024		253
2025		192
2026		191
2027		61
Thereafter		937
Total	$	1,903