Intangible assets (Tables)

12 Months Ended

Dec. 31, 2020

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Gross Carrying Amount and Accumulated Amortization by Intangible Asset Class

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

Schedule of Estimated Aggregate Amortization Expense for Next Five Years

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