INTANGIBLE ASSETS, NET

9 Months Ended

Sep. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

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


		September 30, 2022						December 31, 2021
	Useful Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relations	5	$	978	$	971	$	7	$	978	$	940	$	38
Vendor relations	10	4,778		4,557		221		4,778		4,199		579
Trademark/Trade name	15	887		595		292		887		550		337
TCEP Technology/Patent	15	13,287		8,617		4,670		13,287		7,952		5,335
Non-compete	3	197		196		1		197		192		5
Software	3	9,344		1,732		7,612		538		180		358
		$	29,471	$	16,668	$	12,803	$	20,665	$	14,013	$	6,652

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 $1.1 million and $0.4 million for the three months ended September 30, 2022 and 2021, respectively. Total amortization expense of intangibles was $2.7 million and $1.3 million for the nine months ended September 30, 2022 and 2021, respectively.

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


Year 1	$	4,061
Year 2	4,005
Year 3	2,549
Year 4	950
Year 5	948
Thereafter	290
	$	12,803