BUSINESS COMBINATIONS (Tables)

12 Months Ended

Dec. 31, 2022

Business Combination and Asset Acquisition [Abstract]

Schedule of Business Acquisitions, by Acquisition

The following table summarizes the consideration transferred and the fair values of identifiable assets acquired and liabilities assumed and is considered final:

(Dollars in thousands)
Consideration Transferred:	Fair Value
Common shares issued (18,116,848)	$	908,016
Cash paid to BMBC stock and option holders	16
Value of consideration	908,032
Assets acquired:
Cash and due from banks	573,761
Investment securities	500,400
Loans and leases, net	3,456,748
Premises and equipment	44,842
Deferred income taxes	6,563
Bank owned life insurance	67,525
Intangible assets	73,065
Other assets	153,592
Total assets	4,876,496
Liabilities assumed:
Deposits	4,110,122
Other borrowings	145,512
Other liabilities	124,552
Noncontrolling interest	(913)
Total liabilities and noncontrolling interest	4,379,273
Net assets acquired:	497,223
Goodwill resulting from acquisition of BMBC	$	410,809

The table below presents information with respect to the fair value and unpaid principal balance of acquired loans and leases at the acquisition date.

	January 1, 2022
(Dollars in thousands)	Book Balance		Fair Value
Commercial and industrial	$	613,197	$	586,643
Owner-occupied commercial	513,267		503,182
Commercial mortgages	1,564,234		1,549,515
Construction	209,928		208,288
Commercial small business leases	125,770		119,119
Residential	310,092		315,454
Consumer	178,247		174,547
Total acquired loans and leases	$	3,514,735	$	3,456,748

The table below presents the carrying amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination:

(Dollars in thousands)	January 1, 2022
Book balance of loans at acquisition	$	235,791
Allowance for credit losses at acquisition	(26,103)
Non-credit related discount	(1,421)
Total purchase credit deteriorated (PCD) loans acquired	$	208,267

Schedule of Changes to Goodwill

The following table details the changes to goodwill recorded subsequent to acquisition:

(Dollars in thousands)	Fair Value
Goodwill resulting from the acquisition of BMBC as of January 1, 2022	$	414,337
Effects of adjustments to:
Deferred income taxes	1,870
Intangibles	1,500
Deposits	(149)
Other liabilities	1,352
Effect of sale of BMTIA business	(8,101)
Goodwill resulting from the acquisition of BMBC as of December 31, 2022	$	410,809

Schedule of Other Operating Cost and Expense, by Component

The following table details the costs identified and classified as corporate development and restructuring expenses, which are primarily related to the BMBC Merger:

	Twelve months ended December 31,
(dollars in thousands)	2022
Salaries, benefits and other compensation	$	12,541
Occupancy expense	9,356
Equipment expense	20,950
Professional fees	13,025
Data processing and operations expenses	121
Marketing expense	3,133
Other operating expense, net	6,097
Total corporate development and restructuring expenses	$	65,223

Business Acquisition, Pro Forma Information

The pro forma income statement adjustments are limited to the effects of fair value mark amortization and accretion and intangible asset amortization. No cost savings or additional merger expenses have been included in the pro forma results of operations.

	Twelve months ended December 31,
(dollars in thousands, except share and per share data)	2021
Net interest income	$	567,183
(Recovery of) provision for credit losses	(115,212)
Net interest income after provision for credit losses	682,395
Total noninterest income	271,576
Total noninterest expenses	556,524
Income before income taxes	397,447
Income tax provision	100,009
Net income	$	297,438
Per share data:
Weighted-average basic shares outstanding	65,445,251
Dilutive shares	332,765
Adjusted weighted-average diluted shares	65,778,016
Basic earnings per common share	$	4.54
Diluted earnings per common share	$	4.52