Intangible Assets

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

    The following table summarizes our intangible assets at the dates indicated (in thousands):

	December 31, 2021						December 31, 2020
	Gross		Accumulated				Gross		Accumulated
	Value		Amortization		Net		Value		Amortization		Net
Customer relationships:
EH Transport acquisition	$	1,703	$	(765)	$	938	$	1,703	$	(500)	$	1,203
CTL acquisition	3,173		(794)		2,379		3,173		(270)		2,903
Intangible assets, net	$	4,876	$	(1,559)	$	3,317	$	4,876	$	(770)	$	4,106

We are amortizing the customer relationship intangible assets over a period of seven years, using a modified straight-line approach. During the years ended December 31, 2021, 2020 and 2019, we recorded $0.8 million, $0.6 million and $0.2 million, respectively, of amortization expense related to these intangible assets. The following table presents our forecast of amortization expense associated with these intangible assets for the years indicated (in thousands):

	2022		2023		2024		2025		2026
EH Transport acquisition	$	245	$	227	$	209	$	193	$	63
CTL acquisition	492		460		428		413		397
Total	$	737	$	687	$	637	$	606	$	460