Intangible Assets, Net (Tables)

6 Months Ended

Jun. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets

The Company’s intangible assets consisted of the following (in thousands):

	June 30, 2022						December 31, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizable intangible assets:
Patents	$	3,083	$	(304)	$	2,780	$	2,469	$	(234)	$	2,235
License agreements	1,101		(916)		185		1,101		(852)		249
Total amortizable intangible assets	4,184		(1,219)		2,965		3,570		(1,086)		2,484
Unamortized intangible assets
Trademarks	380		—		380		375		—		375
Total intangible assets	$	4,565	$	(1,219)	$	3,346	$	3,945	$	(1,086)	$	2,859

Schedule of future amortization

Amortization expense consisted of the following (in thousands):

	Three Months Ended June, 30				Six Months Ended June 30,
	2022		2021		2022		2021
Amortization expense	$	63	$	49	$	132	$	96

Expected future amortization of intangible assets as of June 30, 2022, is as follows (in thousands):

Year Ending December 31,	Expected Amortization Expense
2022 (excluding the six months ended June 30, 2022)	$	131
2023	229
2024	160
2025	159
2026	158
Thereafter	2,128
Total amortized intangible assets	$	2,965

Schedule of royalty expenses

Royalty expense consisted of the following (in thousands):

	Three Months Ended June, 30				Six Months Ended June 30,
	2022		2021		2022		2021
Royalty expense	$	766	$	709	$	1,439	$	1,350