INTANGIBLE ASSETS, NET

6 Months Ended

Jun. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS, NET

INTANGIBLE ASSETS, NET

Components of intangible assets (subject to amortization) consist of the following items:

		June 30, 2023						December 31, 2022
	Useful Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relations	5	$	978	$	978	$	—	$	978	$	974	$	4
Vendor relations	10	4,778		4,607		171		4,778		4,575		203
Trademark/Trade name	15	887		632		255		887		608		279
TCEP Technology/Patent	15	13,287		9,281		4,006		13,287		8,838		4,449
Non-compete	3	197		197		—		197		197		—
Software	3	9,344		4,021		5,323		9,387		2,495		6,892
Licensing Fee	30	2,500		14		2,486		—		—		—
		$	31,971	$	19,730	$	12,241	$	29,514	$	17,687	$	11,827

Intangible assets are amortized on a straight-line basis. We continually evaluate the amortization period and carrying basis of intangible assets to determine whether subsequent events and circumstances warrant a revised estimated useful life or reduction in value.

Total amortization expense of intangibles was $1.0 million and $1.1 million for the three months ended June 30, 2023 and 2022, respectively. Total amortization expense of intangibles was $2.0 million and $1.5 million for the six months ended June 30, 2023 and 2022, respectively.

Estimated future amortization expense is as follows (in thousands):

June 30,	Balance
2024	$	4,125
2025	3,363
2026	1,042
2027	1,034
2028	469
Thereafter	2,208
	$	12,241