Intangible Assets

12 Months Ended

Dec. 31, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

NOTE 10. INTANGIBLE ASSETS

Intangible assets consist of the following:

(dollar amounts in thousands)	Estimated useful life in years	Average remaining life in years		Cost		Accumulated amortization			Net book value
December 31, 2021
Customer relationships	8 to 11	7.3		$	50,285	$	(12,991	)	$	37,294
Non-compete agreements	5		4.2		3,296		(499	)	$	2,797
Customer backlog	0.5	—			1,900		(1,900	)	$	—
Trade name	8		7.3		1,200		(113	)	$	1,087
Total amortizing					56,681		(15,503	)		41,178
Trade name - non-amortizing	Indefinite				5,871		—		$	5,871
Total				$	62,552	$	(15,503	)	$	47,049
December 31, 2020
Customer relationships	11	6.8		$	10,644	$	(9,510	)	$	1,134
Non-compete agreements	5	3.6			157		(44	)	$	113
Total amortizing					10,801		(9,554	)		1,247
Trade name - non-amortizing	Indefinite				5,871		—		$	5,871
Total				$	16,672	$	(9,554	)	$	7,118

Intangible assets with finite useful lives are amortized over their respective useful lives.  Amortization expense in the years ended December 31, 2021, 2020 and 2019 was $5.9 million, $0.2 million and $0.9 million, respectively.  Based on the carrying values at December 31, 2021 and assuming no subsequent impairment of the underlying assets, the annual amortization is expected to be $5.9 million in 2022 through 2025, $5.4 million in 2026 and $5.2 million in 2027.