Intangible assets

12 Months Ended

Dec. 31, 2020

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Intangible assets

Intangible assets

The gross carrying amount and accumulated amortization by intangible asset class were as follows:

	(Dollars in thousands)						(Dollars in thousands)
	December 31, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Value		Gross Carrying Amount		Accumulated Amortization		Net Carrying Value
Trade names	$	11,289	$	(2,733)	$	8,556	$	8,422	$	(2,020)	$	6,402
Customer relationships	12,349		(2,402)		9,947		7,337		(1,404)		5,933
	$	23,638	$	(5,135)	$	18,503	$	15,759	$	(3,424)	$	12,335

Amortization expense of $1.7 million and $1.3 million related to intangible assets was recorded in General and administrative expenses for 2020 and 2019, respectively. The estimated aggregate amortization expense for each of the next five years are as follows:

	(Dollars in thousands)
Year	Amortization
2021	$	2,662
2022	2,457
2023	2,343
2024	2,247
2025	1,983
Thereafter	6,811
	$	18,503