Goodwill and intangible assets (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table summarizes changes in goodwill during the six months ended June 30, 2020 and 2019.

	Goodwill
Balance at December 31, 2018	$	137,190
Addition from acquisition of Atlantic Capital branches	31,396
Relief of goodwill due to sale of TPO mortgage delivery channel	(100)
Balance at June 30, 2019	$	168,486
Balance at December 31, 2019	$	169,051
Addition from acquisition of Farmers National (see Note 2)	6,390
Balance at June 30, 2020	$	175,441

Schedule of Core Deposit and Other Intangibles

The composition of core deposit and other intangibles as of June 30, 2020 and December 31, 2019 are as follows:

	Core deposit and other intangibles
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
June 30, 2020
Core deposit intangible	$	52,165	$	(36,080)	$	16,085
Customer base trust intangible	1,600		(467)		1,133
Manufactured housing servicing intangible	1,088		(635)		453
Total core deposit and other intangibles	$	54,853	$	(37,182)	$	17,671
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:

2020	$	2,287
2021	4,089
2022	3,350
2023	2,574
2024	2,015
Thereafter	3,356
	$	17,671