Goodwill and intangible assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill Activity

Goodwill
Balance at December 31, 2018	$	137,190
Addition from acquisition of Atlantic Capital branches	31,961
Relief of goodwill due to sale of TPO mortgage delivery channel	(100)
Balance at December 31, 2019	$	169,051
Balance at December 31, 2019	$	169,051
Addition from acquisition of Farmers National	6,319
Addition from acquisition of Franklin	67,191
Balance at December 31, 2020	$	242,561

Schedule of Core Deposit and Other Intangibles

The composition of core deposit and other intangibles as of December 31, 2020 and December 31, 2019 is as follows:

	Core deposit and other intangibles
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
December 31, 2020
Core deposit intangible	$	59,835	$	(38,807)	$	21,028
Customer base trust intangible	1,600		(547)		1,053
Manufactured housing servicing intangible	1,088		(743)		345
Total core deposit and other intangibles	$	62,523	$	(40,097)	$	22,426
December 31, 2019
Core deposit intangible	$	49,675	$	(33,861)	$	15,814
Customer base trust intangible	1,600		(387)		1,213
Manufactured housing servicing intangible	1,088		(526)		562
Total core deposit and other intangibles	$	52,363	$	(34,774)	$	17,589

Schedule of Estimated Aggregate Amortization Expense of Core Deposit and Other Intangibles

The estimated aggregate future amortization expense of core deposit and other intangibles is as follows:

2021	$	5,477
2022	4,586
2023	3,658
2024	2,946
2025	2,306
Thereafter	3,453
	$	22,426