SouthState (SSB) 10-Q 4 Nov 22 2022 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Nov. 03, 2022
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2022
Entity File Number	001-12669
Entity Registrant Name	SOUTHSTATE CORP
Entity Incorporation, State or Country Code	SC
Entity Tax Identification Number	57-0799315
Entity Address, Address Line One	1101 First Street South, Suite 202
Entity Address, City or Town	Winter Haven
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33880
City Area Code	863
Local Phone Number	293-4710
Title of 12(b) Security	Common Stock
Trading Symbol	SSB
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		75,695,550
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000764038
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Cash and cash equivalents:
Cash and due from banks	$ 394,794	$ 476,653
Federal funds sold and interest-earning deposits with banks	2,342,389	6,018,915
Deposits in other financial institutions (restricted cash)	72,512	347,579
Total cash and cash equivalents	2,809,695	6,843,147
Trading securities, at fair value	51,940	77,689
Investment securities:
Securities held to maturity (fair value of $2,299,162 and $1,778,064)	2,738,178	1,819,901
Securities available for sale, at fair value	5,369,610	5,193,478
Other investments	179,755	160,568
Total investment securities	8,287,543	7,173,947
Loans held for sale	34,477	191,723
Loans:
Total loans	28,836,303	23,928,166
Less allowance for credit losses	(324,398)	(301,807)
Loans, net	28,511,905	23,626,359
Other real estate owned	2,160	2,736
Bank property held for sale	25,043	9,578
Premises and equipment, net	531,160	558,499
Bank owned life insurance ("BOLI")	960,052	783,049
Deferred tax assets	198,647	64,964
Derivatives assets	1,083,803	414,742
Mortgage servicing rights	90,459	65,620
Core deposit and other intangibles	125,390	128,067
Goodwill	1,922,525	1,581,085
Other assets	543,810	438,827
Total assets	45,178,609	41,960,032
Deposits:
Noninterest-bearing	13,660,244	11,498,840
Interest-bearing	24,005,777	23,555,989
Total deposits	37,666,021	35,054,829
Federal funds purchased	213,773	381,195
Securities sold under agreements to repurchase	344,029	400,044
Corporate and subordinated debentures	392,368	327,066
Reserve for unfunded commitments	52,991	30,510
Derivative liabilities	1,082,948	410,137
Other liabilities	505,293	553,311
Total liabilities	40,257,423	37,157,092
Shareholders' equity:
Common stock - $2.50 par value; authorized 160,000,000 shares; 75,676,445 and 69,332,297 shares issued and outstanding, respectively	189,191	173,331
Surplus	4,207,040	3,653,098
Retained earnings	1,241,413	997,657
Accumulated other comprehensive loss	(716,458)	(21,146)
Total shareholders' equity	4,921,186	4,802,940
Total liabilities and shareholders' equity	45,178,609	41,960,032
Acquired - non-purchased credit deteriorated loans
Loans:
Total loans	6,365,175	5,890,069
Acquired - purchased credit deteriorated loans
Loans:
Total loans	1,544,562	1,987,322
Non-acquired loans
Loans:
Total loans	$ 20,926,566	$ 16,050,775

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Investment securities:
Securities held to maturity, fair value (in dollars)	$ 2,299,162	$ 1,778,064
Shareholders' equity:
Common stock, par value (in dollars per share)	$ 2.50	$ 2.50
Common stock, shares authorized	160,000,000	160,000,000
Common stock, shares issued	75,676,445	69,332,297
Common stock, shares outstanding	75,676,445	69,332,297

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Interest income:
Loans, including fees	$ 312,856,000	$ 246,065,000	$ 818,473,000	$ 752,209,000
Investment securities:
Taxable	39,300,000	20,410,000	108,368,000	53,165,000
Tax-exempt	5,986,000	2,775,000	15,937,000	7,554,000
Federal funds sold, securities purchased under agreements to resell and interest-bearing deposits with banks	16,668,000	2,199,000	28,155,000	4,538,000
Total interest income	374,810,000	271,449,000	970,933,000	817,466,000
Interest expense:
Deposits	10,137,000	7,267,000	20,541,000	28,061,000
Federal funds purchased and securities sold under agreements to repurchase	1,506,000	259,000	2,556,000	933,000
Corporate and subordinated debentures	4,958,000	3,896,000	13,874,000	13,314,000
Other borrowings		41,000		44,000
Total interest expense	16,601,000	11,463,000	36,971,000	42,352,000
Net interest income	358,209,000	259,986,000	933,962,000	775,114,000
Provision (recovery) for credit losses	23,876,000	(38,903,000)	34,713,000	(156,116,000)
Net interest income after provision (recovery) for credit losses	334,333,000	298,889,000	899,249,000	931,230,000
Noninterest income:
Securities gains, net	30,000	64,000	30,000	100,000
Other income	7,142,000	6,933,000	20,220,000	17,645,000
Total noninterest income	77,178,000	87,010,000	251,560,000	262,315,000
Noninterest expense:
Salaries and employee benefits	139,554,000	136,969,000	414,264,000	414,709,000
Occupancy expense	22,490,000	23,135,000	67,089,000	69,310,000
Information services expense	20,714,000	18,061,000	59,854,000	55,928,000
OREO and loan related expense	532,000	1,527,000	291,000	2,769,000
Amortization of intangibles	7,837,000	8,543,000	25,178,000	26,675,000
Supplies, printing and postage expense	2,621,000	2,310,000	7,210,000	7,480,000
Professional fees	3,495,000	2,415,000	11,575,000	7,990,000
FDIC assessment and other regulatory charges	6,300,000	4,245,000	16,444,000	13,017,000
Advertising and marketing	2,170,000	2,185,000	6,219,000	5,584,000
Extinguishment of debt cost				11,706,000
Merger and branch consolidation related expense	13,679,000	17,618,000	29,345,000	60,598,000
Other expense	21,041,000	15,282,000	62,733,000	48,618,000
Total noninterest expense	240,433,000	232,290,000	700,202,000	724,384,000
Earnings:
Income before provision for income taxes	171,078,000	153,609,000	450,607,000	469,161,000
Provision for income taxes	38,035,000	30,821,000	98,060,000	100,464,000
Net income	$ 133,043,000	$ 122,788,000	$ 352,547,000	$ 368,697,000
Earnings per common share:
Basic (in dollars per share)	$ 1.76	$ 1.75	$ 4.75	$ 5.22
Diluted (in dollars per share)	$ 1.75	$ 1.74	$ 4.71	$ 5.19
Weighted average common shares outstanding:
Basic (in shares)	75,606	70,066	74,185	70,643
Diluted (in shares)	76,182	70,576	74,791	71,108
Fees on deposit accounts
Noninterest income:
Noninterest income	$ 31,188,000	$ 26,130,000	$ 93,748,000	$ 75,348,000
Mortgage banking income
Noninterest income:
Noninterest income	2,262,000	15,560,000	18,336,000	52,555,000
Trust and investment services income
Noninterest income:
Noninterest income	9,603,000	9,150,000	29,152,000	27,461,000
Correspondent banking and capital market income
Noninterest income:
Noninterest income	20,552,000	25,164,000	76,150,000	79,789,000
SBA income
Noninterest income:
Noninterest income	$ 6,401,000	$ 4,009,000	$ 13,924,000	$ 9,417,000

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Condensed Consolidated Statements of Comprehensive (Loss) Income
Net income	$ 133,043	$ 122,788	$ 352,547	$ 368,697
Unrealized holding losses on available for sale securities:
Unrealized holding losses arising during period	(299,139)	(32,284)	(922,437)	(63,019)
Tax effect	73,588	7,677	227,148	14,986
Reclassification adjustment for gains included in net income	(30)	(64)	(30)	(100)
Tax effect	7	15	7	24
Net of tax amount	(225,574)	(24,656)	(695,312)	(48,109)
Other comprehensive loss, net of tax	(225,574)	(24,656)	(695,312)	(48,109)
Comprehensive (loss) income	$ (92,531)	$ 98,132	$ (342,765)	$ 320,588

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock	Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2020	$ 177,434	$ 3,765,406	$ 657,451	$ 47,589	$ 4,647,880
Balance (in shares) at Dec. 31, 2020	70,973,477
Increase (Decrease) in Stockholders' Equity
Net income			368,697		368,697
Other comprehensive loss, net of tax effects				(48,109)	(48,109)
Total comprehensive income (loss)					320,588
Cash dividends declared on common stock per share			(100,990)		(100,990)
Cash dividends equivalents paid on restricted stock units			(114)		(114)
Employee stock purchases	$ 40	1,111			1,151
Employee stock purchases (in shares)	15,920
Stock options exercised	$ 129	2,251			2,380
Stock options exercised (in shares)	51,620
Stock issued pursuant to restricted stock units	$ 187	(187)
Stock issued pursuant to restricted stock units (in shares)	74,878
Common stock repurchased - buyback plan	$ (2,964)	(93,216)			(96,180)
Common stock repurchased - buyback plan (in shares)	(1,185,491)
Common stock repurchased	$ (31)	(938)			(969)
Common stock repurchased (in shares)	(12,367)
Share-based compensation expense		19,195			19,195
Balance at Sep. 30, 2021	$ 174,795	3,693,622	925,044	(520)	4,792,941
Balance (in shares) at Sep. 30, 2021	69,918,037
Balance at Jun. 30, 2021	$ 175,957	3,720,946	836,584	24,136	4,757,623
Balance (in shares) at Jun. 30, 2021	70,382,728
Increase (Decrease) in Stockholders' Equity
Net income			122,788		122,788
Other comprehensive loss, net of tax effects				(24,656)	(24,656)
Total comprehensive income (loss)					98,132
Cash dividends declared on common stock per share			(34,305)		(34,305)
Cash dividends equivalents paid on restricted stock units			(23)		(23)
Employee stock purchases	$ 22	645			667
Employee stock purchases (in shares)	8,823
Stock options exercised	$ 22	451			473
Stock options exercised (in shares)	8,923
Stock issued pursuant to restricted stock units	$ 8	(8)
Stock issued pursuant to restricted stock units (in shares)	3,108
Common stock repurchased - buyback plan	$ (1,214)	(34,805)			(36,019)
Common stock repurchased - buyback plan (in shares)	(485,491)
Common stock repurchased		(3)			(3)
Common stock repurchased (in shares)	(54)
Share-based compensation expense		6,396			6,396
Balance at Sep. 30, 2021	$ 174,795	3,693,622	925,044	(520)	4,792,941
Balance (in shares) at Sep. 30, 2021	69,918,037
Balance at Dec. 31, 2021	$ 173,331	3,653,098	997,657	(21,146)	$ 4,802,940
Balance (in shares) at Dec. 31, 2021	69,332,297				69,332,297
Increase (Decrease) in Stockholders' Equity
Net income			352,547		$ 352,547
Other comprehensive loss, net of tax effects				(695,312)	(695,312)
Total comprehensive income (loss)					(342,765)
Cash dividends declared on common stock per share			(108,639)		(108,639)
Cash dividends equivalents paid on restricted stock units			(152)		(152)
Employee stock purchases	$ 48	1,395			1,443
Employee stock purchases (in shares)	19,162
Stock options exercised	$ 92	1,424			1,516
Stock options exercised (in shares)	37,236
Restricted stock awards (forfeitures)	$ (6)	6
Restricted stock awards (forfeitures)(in shares)	(2,816)
Stock issued pursuant to restricted stock units	$ 958	(957)			1
Stock issued pursuant to restricted stock units (in shares)	383,369
Common stock repurchased - buyback plan	$ (3,280)	(106,924)			(110,204)
Common stock repurchased - buyback plan (in shares)	(1,312,038)
Common stock repurchased	$ (279)	(8,778)			(9,057)
Common stock repurchased (in shares)	(111,568)
Share-based compensation expense		28,311			28,311
Common stock issued for Atlantic Capital merger	$ 18,327	641,445			659,772
Common stock issued for Atlantic Capital merger (in shares)	7,330,803
Net fair value of unvested equity awards assumed in the Atlantic Capital acquisition		(1,980)			(1,980)
Balance at Sep. 30, 2022	$ 189,191	4,207,040	1,241,413	(716,458)	$ 4,921,186
Balance (in shares) at Sep. 30, 2022	75,676,445				75,676,445
Balance at Jun. 30, 2022	$ 189,103	4,195,976	1,146,230	(490,884)	$ 5,040,425
Balance (in shares) at Jun. 30, 2022	75,641,322
Increase (Decrease) in Stockholders' Equity
Net income			133,043		133,043
Other comprehensive loss, net of tax effects				(225,574)	(225,574)
Total comprehensive income (loss)					(92,531)
Cash dividends declared on common stock per share			(37,834)		(37,834)
Cash dividends equivalents paid on restricted stock units			(26)		(26)
Employee stock purchases	$ 25	714			739
Employee stock purchases (in shares)	10,084
Stock options exercised	$ 47	732			779
Stock options exercised (in shares)	18,980
Restricted stock awards	$ (3)	3
Restricted stock awards (in shares)	(1,550)
Stock issued pursuant to restricted stock units	$ 46	(46)
Stock issued pursuant to restricted stock units (in shares)	18,560
Common stock repurchased	$ (27)	(851)			(878)
Common stock repurchased (in shares)	(10,951)
Share-based compensation expense		10,512			10,512
Balance at Sep. 30, 2022	$ 189,191	$ 4,207,040	$ 1,241,413	$ (716,458)	$ 4,921,186
Balance (in shares) at Sep. 30, 2022	75,676,445				75,676,445

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares		3 Months Ended		9 Months Ended
	Oct. 24, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Condensed Consolidated Statements of Changes in Shareholders' Equity
Common stock cash dividends declared, per share (in dollars per share)	$ 0.50	$ 0.50	$ 0.49	$ 1.48	$ 1.43

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 352,547	$ 368,697
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	48,765	47,104
(Recovery) provision for credit losses	34,713	(156,116)
Deferred income taxes	123,905	106,696
Gains on sale of securities, net	(30)	(100)
Share-based compensation expense	28,311	19,195
Accretion of discount related to acquired loans	(29,061)	(21,951)
Extinguishment of debt cost - fair value marks		11,706
Losses on disposal of premises and equipment	3,483	749
Gains on sale of bank properties held for sale and repossessed real estate	(787)	(1,767)
Net amortization of premiums on investment securities	21,528	28,994
Bank properties held for sale and repossessed real estate write downs	226	1,741
Fair value adjustment for loans held for sale	7,604	5,586
Originations and purchases of loans held for sale	(1,273,659)	(2,319,690)
Proceeds from sales of loans held for sale	1,421,238	2,425,783
Losses (gains) on sales of loans held for sale	2,062	(64,025)
Increase in cash surrender value of BOLI	(17,188)	(13,289)
Net change in:
Accrued interest receivable	(22,788)	13,629
Prepaid assets	(1,180)	(2,113)
Operating leases	245	1,943
Bank owned life insurance	(423)	(202)
Trading securities	25,749	(18,759)
Derivative assets	(665,105)	324,814
Miscellaneous other assets	(6,642)	(305,354)
Accrued interest payable	2,745	(575)
Accrued income taxes	(54,219)	(117,138)
Derivative liabilities	668,812	(319,824)
Miscellaneous other liabilities	(86,653)	412,277
Net cash provided by operating activities	584,198	428,011
Cash flows from investing activities:
Proceeds from sales of investment securities available for sale	482,028	150,602
Proceeds from maturities and calls of investment securities held to maturity	176,401	67,117
Proceeds from maturities and calls of investment securities available for sale	460,910	616,178
Proceeds from sales and redemptions of other investment securities	13,216	1,533
Purchases of investment securities available for sale	(1,366,327)	(2,155,507)
Purchases of investment securities held to maturity	(1,099,691)	(757,228)
Purchases of other investment securities	(20,387)	(1,683)
Net (increase) decrease in loans	(2,516,308)	881,736
Net cash received from (paid in) acquisitions	250,115	(39,929)
Recoveries of loans previously charged off	15,381	10,744
Purchase of bank owned life insurance	(85,966)	(206,000)
Purchases of premises and equipment	(13,781)	(25,405)
Proceeds from redemption and payout of bank owned life insurance policies	1,188	307
Proceeds from sale of bank properties held for sale and repossessed real estate	8,564	33,003
Proceeds from sale of premises and equipment	3,772	3,909
Net cash used in investing activities	(3,690,885)	(1,420,623)
Cash flows from financing activities:
Net (decrease) increase in deposits	(415,236)	2,872,210
Net (decrease) increase in federal funds purchased and securities sold under agreements to repurchase and other short-term borrowings	(273,437)	80,070
Proceeds from borrowings		25,000
Repayment of borrowings	(13,000)	(100,878)
Common stock issuance	1,444	1,151
Common stock repurchases	(119,261)	(97,149)
Dividends paid	(108,791)	(101,104)
Stock options exercised	1,516	2,380
Net cash (used in) provided by financing activities	(926,765)	2,681,680
Net increase (decrease) in cash and cash equivalents	(4,033,452)	1,689,068
Cash and cash equivalents at beginning of period	6,843,147	4,609,255
Cash and cash equivalents at end of period	2,809,695	6,298,323
Cash paid for:
Interest	34,227	42,925
Income taxes	31,611	115,034
Recognition of operating lease assets in exchange for lease liabilities	12,616	5,494
Acquisitions:
Fair value of tangible assets acquired	3,501,273	34,838
Other intangible assets acquired	20,791
Liabilities assumed	3,205,694	2,343
Net identifiable assets acquired over liabilities assumed	341,440	15,816
Common stock issued in acquisition	659,772
Real estate acquired in full or in partial settlement of loans	$ 1,151	$ 2,516

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2022
Basis of Presentation
Basis of Presentation	Note 1 — Basis of Presentation ​ The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America, otherwise referred to as GAAP, for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and disclosures required for complete financial statements. In the opinion of Management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period information has been reclassified to conform to the current period presentation, and these reclassifications had no impact on net income or equity as previously reported. Operating results for the three and nine months ended September 30, 2022 and 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. ​ The condensed consolidated balance sheet at December 31, 2021 has been derived from the audited financial statements at that date but does not include all of the information and disclosures required by GAAP for complete financial statements.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2022
Summary of Significant Accounting Policies
Summary of Significant Accounting Policies	Note 2 — Summary of Significant Accounting Policies ​ The information contained in the consolidated financial statements and accompanying notes included in our Annual Report on Form 10-K for the year ended December 31, 2021, as filed with the Securities and Exchange Commission (the “SEC”) on February 25, 2022, should be referenced when reading these unaudited condensed consolidated financial statements. Unless otherwise mentioned or unless the context requires otherwise, references herein to “SouthState,” the “Company” “we,” “us,” “our” or similar references mean SouthState Corporation and its consolidated subsidiaries. References to the “Bank” or “SouthState Bank” means SouthState Corporation’s wholly owned subsidiary, SouthState Bank, National Association, a national banking association. ​ Allowance for Credit Losses (“ACL”) ​ On January 1, 2020, we adopted the requirements of Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, sometimes referred to herein as ASU 2016-13. Topic 326 was subsequently amended by ASU No. 2019-11, Codification Improvements to Topic 326, Financial Instruments-Credit Losses; ASU No. 2019-05, Codification Improvements to Topic 326, Financial Instruments-Credit Losses; and ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. This standard applies to all financial assets measured at amortized cost and off-balance sheet credit exposures, including loans, investment securities and unfunded commitments. We applied the standard’s provisions using the modified retrospective method as a cumulative-effect adjustment to retained earnings as of January 1, 2020 . ACL – Investment Securities Management uses a systematic methodology to determine its ACL for investment securities held to maturity. The ACL is a valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected on the held to maturity portfolio. Management considers the effects of past events, current conditions, and reasonable and supportable forecasts on the collectability of the loan portfolio. The Company’s estimate of its ACL involves a high degree of judgment; therefore, Management’s process for determining expected credit losses may result in a range of expected credit losses. Management monitors the held to maturity portfolio to determine whether a valuation account should be recorded. As of September 30, 2022 and December 31, 2021, the Company had Management excludes the accrued interest receivable balance from the amortized cost basis in measuring expected credit losses on the investment securities and does not record an allowance for credit losses on accrued interest receivable. As of September 30, 2022 and December 31, 2021, the accrued interest receivables for all investment securities recorded in Other Assets were Management no longer evaluates securities for other-than-temporary impairment, otherwise referred to herein as OTTI, as ASC Subtopic 326-30, Financial Instruments—Credit Losses—Available for Sale Debt Securities, changes the accounting for recognizing impairment on available for sale debt securities. Each quarter, Management evaluates impairment where there has been a decline in fair value below the amortized cost basis of a security to determine whether there is a credit loss associated with the decline in fair value. Management considers the nature of the collateral, potential future changes in collateral values, default rates, delinquency rates, third-party guarantees, credit ratings, interest rate changes since purchase, volatility of the security’s fair value and historical loss information for financial assets secured with similar collateral among other factors. Credit losses are calculated individually, rather than collectively, using a discounted cash flow method, whereby Management compares the present value of expected cash flows with the amortized cost basis of the security. The credit loss component would be recognized through the Provision for Credit Losses in the Condensed Consolidated Statements of Income. ACL - Loans The ACL for loans held for investment reflects Management’s estimate of losses that will result from the inability of our borrowers to make required loan payments. The Company established the incremental increase in the ACL at adoption through equity and subsequent adjustments through a provision for or recovery of credit losses recorded to earnings. The Company records loans charged off against the ACL and subsequent recoveries, if any, increase the ACL when they are recognized. ​ Management uses systematic methodologies to determine its ACL for loans held for investment and certain off-balance-sheet credit exposures. The ACL is a valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected on the loan portfolio. Management considers the effects of past events, current conditions, and reasonable and supportable forecasts on the collectability of the loan portfolio. The Company’s estimate of its ACL involves a high degree of judgment; therefore, Management’s process for determining expected credit losses may result in a range of expected credit losses. The Company’s ACL recorded in the balance sheet reflects Management’s best estimate within the range of expected credit losses. The Company recognizes in net income the amount needed to adjust the ACL for Management’s current estimate of expected credit losses. The Company’s ACL is calculated using collectively evaluated and individually evaluated loans. ​ The allowance for credit losses is measured on a collective pool basis when similar risk characteristics exist. Loans with similar risk characteristics are grouped into homogenous segments, or pools, for analysis. The Discounted Cash Flow (“DCF”) method is used for each loan in a pool, and the results are aggregated at the pool level. A periodic tendency to default and absolute loss given default are applied to a projective model of the loan’s cash flow while considering prepayment and principal curtailment effects. The analysis produces expected cash flows for each instrument in the pool by pairing loan-level term information (e.g., maturity date, payment amount, interest rate, etc.) with top-down pool assumptions (e.g., default rates and prepayment speeds). The Company has identified the following portfolio segments: Owner-Occupied Commercial Real Estate, Non-Owner Occupied Commercial Real Estate, Multifamily, Municipal, Commercial and Industrial, Commercial Construction and Land Development, Residential Construction, Residential Senior Mortgage, Residential Junior Mortgage, Revolving Mortgage, and Consumer and Other. ​ In determining the proper level of the ACL, Management has determined that the loss experience of the Bank provides the best basis for its assessment of expected credit losses. The Company therefore used its own historical credit loss experience by each loan segment over an economic cycle, while excluding loss experience from certain acquired institutions (i.e., failed banks). For most of the segment models for collectively evaluated loans, the Company incorporated two or more macroeconomic drivers using a statistical regression modeling methodology. ​ Management considers forward-looking information in estimating expected credit losses. The Company subscribes to a third-party service which provides a quarterly macroeconomic baseline outlook and alternative scenarios for the United States economy. The baseline, along with the evaluation of alternative scenarios, is used by Management to determine the best estimate within the range of expected credit losses. Management has evaluated the appropriateness of the reasonable and supportable forecast scenarios and has made adjustments as needed. For the contractual term that extends beyond the reasonable and supportable forecast period, the Company reverts to the long term mean of historical factors within four quarters using a straight-line approach. The Company generally uses a four-quarter forecast and a four-quarter reversion period. ​ Included in its systematic methodology to determine its ACL, Management considers the need to qualitatively adjust expected credit losses for information not already captured in the loss estimation process. These qualitative adjustments either increase or decrease the quantitative model estimation (i.e., formulaic model results). Each period, the Company considers qualitative factors that are relevant within the qualitative framework that includes the following: 1) Lending Policy; 2) Economic conditions not captured in models; 3) Volume and Mix of Loan Portfolio; 4) Past Due Trends; 5) Concentration Risk; 6) External Factors; and 7) Model Limitations. ​ When a loan no longer shares similar risk characteristics with its segment, the asset is assessed to determine whether it should be included in another pool or should be individually evaluated. The Company’s threshold for individually evaluated loans includes all non-accrual loans with a net book balance in excess of million. Management will monitor the credit environment and make adjustments to this threshold in the future if warranted. Based on the threshold above, consumer financial assets will generally remain in pools unless they meet the dollar threshold. The expected credit losses on individually evaluated loans will be estimated based on discounted cash flow analysis unless the loan meets the criteria for use of the fair value of collateral, either by virtue of an expected foreclosure or through meeting the definition of collateral-dependent. Financial assets that have been individually evaluated can be returned to a pool for purposes of estimating the expected credit loss insofar as their credit profile improves and that the repayment terms were not considered to be unique to the asset. ​ Management measures expected credit losses over the contractual term of a loan. When determining the contractual term, the Company considers expected prepayments but is precluded from considering expected extensions, renewals, or modifications, unless the Company reasonably expects it will execute a TDR with a borrower. In the event of a reasonably expected TDR, the Company factors the reasonably-expected TDR into the current expected credit losses estimate. For consumer loans, the point at which a TDR is reasonably expected is when the Company approves the borrower’s application for a modification (i.e., the borrower qualifies for the TDR) or when the Credit Administration department approves loan concessions on substandard loans. For commercial loans, the point at which a TDR is reasonably expected is when the Company approves the loan for modification or when the Credit Administration department approves loan concessions on substandard loans. The Company uses a discounted cash flow methodology for a TDR to calculate the effect of the concession provided to the borrower within the ACL. The Company has not chosen to early adopt ASU No. 2020-04, Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures, that allows for the retirement of TDR guidance, which does not go into effect until early 2023. ​ ​ For purchased credit-deteriorated, otherwise referred to herein as PCD, assets are defined as acquired individual financial assets (or acquired groups of financial assets with similar risk characteristics) that, as of the date of acquisition, have experienced a more-than-insignificant deterioration in credit quality since origination, as determined by the Company’s assessment. The Company records acquired PCD loans by adding the expected credit losses (i.e., allowance for credit losses) to the purchase price of the financial assets rather than recording through the provision for credit losses in the income statement. The expected credit loss, as of the acquisition day, of a PCD loan is added to the allowance for credit losses. The non-credit discount or premium is the difference between the unpaid principal balance and the amortized cost basis as of the acquisition date. Subsequent to the acquisition date, the change in the ACL on PCD loans is recognized through the Provision for Credit Losses in the Condensed Consolidated Statements of Income. The non-credit discount or premium is accreted or amortized, respectively, into interest income over the remaining life of the PCD loan on a level-yield basis. In accordance with the transition requirements within the standard, the Company’s acquired credit-impaired loans (i.e., ACI or Purchased Credit Impaired) were treated as PCD loans. ​ The Company follows its nonaccrual policy by reversing contractual interest income in the income statement when the Company places a loan on nonaccrual status. Therefore, Management excludes the accrued interest receivable balance from the amortized cost basis in measuring expected credit losses on the portfolio and does not record an allowance for credit losses on accrued interest receivable. As of September 30, 2022 and December 31, 2021, the accrued interest receivables for loans recorded in Other Assets were ​ The Company has a variety of assets that have a component that qualifies as an off-balance sheet exposure. These primarily include undrawn portions of revolving lines of credit and standby letters of credit. The expected losses associated with these exposures within the unfunded portion of the expected credit loss will be recorded as a liability on the balance sheet. Management has determined that a majority of the Company’s off-balance-sheet credit exposures are not unconditionally cancellable. Management completes funding studies based on historical data to estimate the percentage of unfunded loan commitments that will ultimately be funded to calculate the reserve for unfunded commitments. Management applies this funding rate, along with the loss factor rate determined for each pooled loan segment, to unfunded loan commitments, excluding unconditionally cancellable exposures and letters of credit, to arrive at the reserve for unfunded loan commitments. As of September 30, 2022 and December 31, 2021, the liabilities recorded for expected credit losses on unfunded commitments were million, respectively.

Recent Accounting and Regulator

Recent Accounting and Regulatory Pronouncements	9 Months Ended
	Sep. 30, 2022
Recent Accounting and Regulatory Pronouncements
Recent Accounting and Regulatory Pronouncements	Note 3 — Recent Accounting and Regulatory Pronouncements ​ Accounting Standards Adopted In August 2018, the FASB issued ASU No. 2018-14, Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans (Subtopic 715-20. ASU 2018-14 amends ASC 715-20 to add, remove, and clarify disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. For public business entities, ASU 2018-14 is effective for fiscal years ending after December 15, 2020 and requires entities to apply the amendment on a retrospective basis. Early adoption is permitted. The Company adopted ASU No. 2018-14 on January 1, 2021 but it did not have a material impact on our consolidated financial statements. Issued But Not Yet Adopted Accounting Standards In March 2022, FASB issued ASU No. 2020-04, Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. The amendments in this ASU eliminate the long-standing accounting guidance for TDRs by creditors in Subtopic 310-40, Receivables – Troubled Debt Restructurings by Creditors, as it is no longer meaningful due to the introduction of Topic 326, which requires an entity to consider lifetime expected credit losses on loans when establishing an allowance for credit losses. Thus, most losses that would have been realized for a TDR under Subtopic 310-40 are now captured by the accounting required under Topic 326. The amendments in this ASU also require that an entity disclose current-period gross write offs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments – Credit Losses Measured at Amortized Cost. The amendments are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Aside from the changes to the disclosures required by this ASU, this ASU is not expected to have a material impact on our consolidated financial statements. ​ In March 2020, FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848 – Facilitation of the Effects of Reference Rate Reform on Financial Reporting and subsequently expanded the scope of ASU No. 2020-04 with the issuance of ASU No. 2021-01. This update provides companies with optional guidance to ease the potential accounting burden associated with transitioning away from reference rates that will be discontinued. The amendments in this update provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The main provisions for contract modifications include optional relief by allowing the modification as a continuation of the existing contract without additional analysis and other optional expedients regarding embedded features. The amendments in this update apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate that will be discontinued because of reference rate reform. The amendments in this update were effective for all entities as of March 12, 2020 and may be applied through December 31, 2022. An entity may elect to apply the amendments in this update to eligible hedging relationships existing as of the beginning of the interim period that includes March 12, 2020 and to new eligible hedging relationships entered into after the beginning of the interim period that includes March 12, 2020. An entity may elect to apply the amendments for contract modifications as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. Once elected, the amendments in this update must be applied prospectively for all eligible contract modifications and hedging relationships. ​ The Company has established a LIBOR Committee and various subcommittees, which have evaluated the impact of adopting and implementing ASU 2020-04 on the consolidated financial statements, including the evaluation of all of the Company’s contracts, hedging relationships and other transactions that will be affected by reference rates that are being discontinued. The cross-functional LIBOR Committee and subcommittees have (1) assessed the Company's current exposure to LIBOR indexed instruments and the data, systems and processes that will be impacted; (2) established a detailed implementation plan; and (3) developed a formal governance structure for the transition. The Company is in the process of developing and implementing various proactive steps to facilitate the transition on behalf of customers, which include the adoption and ongoing implementation of fallback provisions that provide for the determination of replacement rates for LIBOR-linked financial products; the adoption of new products linked to alternative reference rates, such as adjustable-rate mortgages, consistent with guidance provided by the U.S. regulators, the Alternative Reference Rates Committee, and government sponsored entities; the cessation of quoting LIBOR and originating new products linked to LIBOR by December 31, 2021; and the selection of SOFR indices as the replacement indices, and successful completion of systems testing using the SOFR replacement indices. ​ As a result of the implementation plan, the Company discontinued quoting LIBOR on September 30, 2021 and discontinued originating new products linked to LIBOR on December 31, 2021. The Company continues to evaluate its financial and operational infrastructure in its effort to transition all financial and strategic processes, systems, and models to reference rates other than LIBOR. The Company is in the process of developing and implementing processes to educate all client-facing associates and coordinate communications with customers regarding the transition. In addition, the Company expects to adopt the LIBOR transition relief allowed under ASU No. 2020-04.

Mergers and Acquisitions

Mergers and Acquisitions	9 Months Ended
	Sep. 30, 2022
Mergers and Acquisitions
Mergers and Acquisitions	Note 4 — Mergers and Acquisitions ​ Duncan-Williams, Inc. (“Duncan-Williams”) ​ On February 1, 2021, the Company completed its acquisition of Duncan-Williams, a 52-year-old family- and employee-owned registered broker-dealer, headquartered in Memphis, Tennessee, serving primarily institutional clients across the U.S. in the fixed income business. Duncan-Williams firm became an operating subsidiary of the Bank immediately following the transaction. ​ In total, the purchase price for Duncan-Williams was $48.3 million, including an additional premium of $8.0 million that is payable after three years from the date of acquisition. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC Topic 805. The Company recognized goodwill on this acquisition of million. The goodwill was calculated based on the fair values of the assets acquired and liabilities assumed as of the acquisition date. ​ Atlantic Capital Bancshares, Inc. (“Atlantic Capital” or “ACBI”) ​ On March 1, 2022, the Company acquired all of the outstanding common stock of Atlantic Capital Bancshares, Inc., a Georgia corporation (“Atlantic Capital” or “ACBI”), in a stock transaction. Upon the terms and subject to the conditions set forth therein, Atlantic Capital merged with and into the Company, with the Company continuing as the surviving corporation in the merger. Immediately following the merger, Atlantic Capital’s wholly owned banking subsidiary, Atlantic Capital Bank, N.A. (“ACB”) merged with and into the Company’s wholly owned banking subsidiary, SouthState Bank, National Association, which continues as the surviving bank in the bank merger by and between SouthState and Atlantic Capital. Shareholders of Atlantic Capital received shares of the Company’s common stock for each share of Atlantic Capital common stock they owned. In total, the purchase price for Atlantic Capital was million. ​ In the acquisition, the Company acquired $2.4 billion of loans, including PPP loans, at fair value, net of $54.3 million, or 2.24%, estimated discount to the outstanding principal balance, representing 10.0% of the Company’s total loans at December 31, 2021. Of the total loans acquired, Management identified ​ The acquisition was accounted for under the acquisition method of accounting in accordance with ASC Topic 805. The Company recognized goodwill on this acquisition of million. The goodwill was calculated based on the fair values of the assets acquired and liabilities assumed as of the acquisition date. ​ During the three and nine months ended September 30, 2022, the Company incurred approximately $7.1 million and $15.0 million, respectively, of acquisition costs related to this transaction. During the three and nine months ended September 30, 2021, the Company incurred approximately ​ The Atlantic Capital transaction was accounted for using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed and consideration exchanged were recorded at estimated fair value on the acquisition date. Fair values are preliminary and subject to refinement for up to a year after the closing date of the acquisition. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Initial ​ Subsequent ​ ​ ​ ​ ​ As Recorded ​ Fair Value ​ Fair Value ​ As Recorded by ​ (Dollars in thousands) by Atlantic Capital Adjustments Adjustments ​ the Company Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 250,134 ​ $ 24 (a) $ — ​ $ 250,158 ​ Investment securities ​ ​ 717,332 ​ ​ (13,622) (b) ​ — ​ ​ 703,710 ​ Loans, net of allowance and mark ​ 2,394,256 ​ (18,964) (c) ​ (5,614) (c) 2,369,678 ​ Premises and equipment ​ 16,892 ​ 2,608 (d) ​ — ​ 19,500 ​ Intangible assets ​ ​ 22,572 ​ ​ (1,781) (e) ​ — ​ ​ 20,791 ​ Bank owned life insurance ​ ​ 74,613 ​ ​ — ​ ​ — ​ ​ 74,613 ​ Deferred tax asset ​ ​ 30,231 ​ ​ 2,273 (f) ​ (444) (f) ​ 32,060 ​ Other assets ​ 45,274 ​ (1,277) (g) ​ 7,557 (g) 51,554 ​ Total assets ​ $ 3,551,304 ​ $ (30,739) ​ $ 1,499 ​ $ 3,522,064 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deposits: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Noninterest-bearing ​ $ 1,411,671 ​ $ — ​ $ — ​ $ 1,411,671 ​ Interest-bearing ​ 1,616,970 ​ — ​ ​ — ​ 1,616,970 ​ Total deposits ​ 3,028,641 ​ — ​ ​ — ​ 3,028,641 ​ Federal funds purchased and securities sold under agreements to repurchase ​ ​ 50,000 ​ ​ — ​ ​ — ​ ​ 50,000 ​ Other borrowings ​ ​ 74,131 ​ ​ 4,286 (h) ​ — ​ ​ 78,417 ​ Other liabilities ​ 50,711 ​ (2,075) (i) ​ — ​ 48,636 ​ Total liabilities ​ ​ 3,203,483 ​ ​ 2,211 ​ ​ — ​ ​ 3,205,694 ​ Net identifiable assets acquired over (under) liabilities assumed ​ ​ 347,821 ​ ​ (32,950) ​ ​ 1,499 ​ ​ 316,370 ​ Goodwill ​ — ​ 342,939 ​ ​ (1,499) ​ 341,440 ​ Net assets acquired over liabilities assumed ​ $ 347,821 ​ $ 309,989 ​ $ — ​ $ 657,810 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consideration: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ South State Corporation common shares issued ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 7,330,803 ​ Purchase price per share of the Company's common stock ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 90.00 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Company common stock issued ($659,772) and cash exchanged for fractional shares ($19) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 659,791 ​ Stock option conversion ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 1,135 ​ Restricted stock unit conversion ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2,870 ​ Restricted stock awards conversion (unvested awards) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (5,986) ​ Fair value of total consideration transferred ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 657,810 ​ Explanation of fair value adjustments (a)— Represents an adjustment to record time deposits with financial institutions at fair value (premium). (b)— Represents the reversal of Atlantic Capital 's existing fair value adjustments of $17.2 million and the adjustment to record securities at fair value (discount) totaling $30.9 million (includes reclassification of all securities held as HTM to AFS totaling $237.6 million). (c)— Represents approximately 1.40%, or $34.0 million, net credit discount of the loan portfolio and 2.24% total net discount, or $54.3 million, including non-credit discount, based on a third-party valuation. Also, includes a reversal of Atlantic Capital's ending allowance for credit losses of (d)— Represents the preliminary fair value adjustments of $2.6 million on fixed assets and leased assets. (e)— Represents approximately $17.5 million, or 0.63%, of CDI amount and $3.2 million for SBA servicing asset based on a third-party valuation. Atlantic Capital’s pre-merger goodwill and servicing asset of (f)— Represents deferred tax asset related to fair value adjustments with effective tax rate of 24.6% , which includes an adjustment from Atlantic Capital’s effective tax rate to the Company’s effective tax rate. The difference in effective tax rates relates to state income taxes. (g)— Represents the fair value adjustment (decrease) for low-income housing investments of $1.1 million, write-off of prepaid assets of $233,000, adjustments to receivables of $154,000 and fair value adjustment for Small Business Investment Company (“SBIC”) investments of $7.4 million. (h)— Represents the reversal of the existing Atlantic Capital’s issuance costs on subordinated debt of $0.9 million and recording the fair value adjustment (premium) of $3.4 million, based on a third-party valuation. (i)— Represents the reversal of $2.8 million of unfunded commitment liability at purchase date and the fair value adjustment to increase lease liabilities associated with rental facilities totaling $1.4 million. Also includes the reversal of uncertain tax liability of ​ Comparative and Pro Forma Financial Information for the Atlantic Capital Acquisition ​ Pro-forma data for the three- and nine-month periods ending September 30, 2021 and nine-month period ending September 30, 2022 listed in the table below presents pro-forma information as if the Atlantic Capital acquisition occurred at the beginning of 2021. These results combine the historical results of Atlantic Capital in the Company’s Consolidated Statements of Income and, while certain adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, they are not indicative of what would have occurred had the acquisition taken place on January 1, 2021. ​ Merger-related costs of $15.0 million from the Atlantic Capital acquisition were incurred during 2022 and were excluded from pro forma information below. Merger-related costs of incurred during three and nine months ended September 30, 2021 were also excluded from pro forma information below. No adjustments have been made to reduce the impact of any OREO write downs, investment securities sold or repayment of borrowings recognized by Atlantic Capital in either 2022 or 2021. The core system conversion for the Atlantic Capital merger was completed during third quarter of 2022. The Company expects to achieve further operating cost savings and other business synergies as a result of the acquisition, which are not reflected in the pro forma amounts below. The total revenues presented below represent pro-forma net interest income plus pro-forma noninterest income: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pro Forma ​ Pro Forma ​ Pro Forma ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ Nine Months Ended ​ (Dollars in thousands) ​ September 30, 2021 ​ September 30, 2022 ​ September 30, 2021 ​ Total revenues (net interest income plus noninterest income) $ 380,736 $ 1,200,879 $ 1,139,741 ​ Net interest income ​ $ 289,117 ​ $ 945,790 ​ $ 865,671 ​ Net adjusted income available to the common shareholder ​ $ 140,076 ​ $ 380,588 ​ $ 401,853 ​ EPS - basic ​ $ 1.81 ​ $ 5.02 ​ $ 5.15 ​ EPS - diluted ​ $ 1.80 ​ $ 4.98 ​ $ 5.12 ​ ​ The disclosures regarding the results of operations for Atlantic Capital subsequent to the acquisition date are omitted as this information is not practical to obtain. The majority of the fixed costs and purchase accounting entries were booked on the Company’s core system making it impractical to determine Atlantic Capital’s results of operation on a stand-alone basis.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2022
Investment Securities
Investment Securities	Note 5 — Investment Securities ​ The following is the amortized cost and fair value of investment securities held to maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Gross ​ ​ ​ ​ Amortized ​ Unrealized ​ Unrealized ​ Fair (Dollars in thousands) Cost Gains Losses Value September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 197,261 ​ $ — ​ $ (30,091) ​ $ 167,170 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,632,761 ​ ​ — ​ ​ (267,505) ​ ​ 1,365,256 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 483,436 ​ ​ 691 ​ ​ (64,602) ​ ​ 419,525 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 366,227 ​ ​ — ​ ​ (66,366) ​ ​ 299,861 ​ Small Business Administration loan-backed securities ​ ​ 58,493 ​ ​ — ​ ​ (11,143) ​ ​ 47,350 ​ ​ ​ $ 2,738,178 ​ $ 691 ​ $ (439,707) ​ $ 2,299,162 ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 112,913 ​ $ — ​ $ (2,627) ​ $ 110,286 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,120,104 ​ ​ 14 ​ ​ (24,278) ​ ​ 1,095,840 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 174,178 ​ ​ — ​ ​ (4,937) ​ ​ 169,241 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 350,116 ​ ​ 304 ​ ​ (8,021) ​ ​ 342,399 ​ Small Business Administration loan-backed securities ​ ​ 62,590 ​ ​ — ​ ​ (2,292) ​ ​ 60,298 ​ ​ ​ $ 1,819,901 ​ $ 318 ​ $ (42,155) ​ $ 1,778,064 ​ ​ The following is the amortized cost and fair value of investment securities available for sale: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ Amortized ​ Unrealized ​ Unrealized ​ Fair (Dollars in thousands) Cost Gains Losses Value September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasuries ​ $ 271,783 ​ $ — ​ $ (7,358) ​ $ 264,425 ​ U.S. Government agencies ​ ​ 245,943 ​ ​ — ​ ​ (27,320) ​ ​ 218,623 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ 2,048,537 ​ — ​ (318,470) ​ 1,730,067 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 729,712 ​ ​ 6 ​ ​ (101,906) ​ ​ 627,812 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,224,869 ​ ​ 2,551 ​ ​ (199,644) ​ ​ 1,027,776 ​ State and municipal obligations ​ 1,256,045 ​ 23 ​ (252,750) ​ 1,003,318 ​ Small Business Administration loan-backed securities ​ 507,412 ​ 546 ​ (43,722) ​ 464,236 ​ Corporate securities ​ ​ 35,595 ​ ​ 10 ​ ​ (2,252) ​ ​ 33,353 ​ ​ ​ $ 6,319,896 ​ $ 3,136 ​ $ (953,422) ​ $ 5,369,610 ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 98,882 ​ $ — ​ $ (1,765) ​ $ 97,117 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,851,700 ​ 5,324 ​ (25,985) ​ 1,831,039 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 730,949 ​ ​ 5,957 ​ ​ (10,911) ​ ​ 725,995 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,220,233 ​ ​ 5,438 ​ ​ (18,430) ​ ​ 1,207,241 ​ State and municipal obligations ​ ​ 798,211 ​ 16,697 ​ (2,219) ​ 812,689 ​ Small Business Administration loan-backed securities ​ 502,812 ​ 2,330 ​ (4,479) ​ 500,663 ​ Corporate securities ​ 18,509 ​ ​ 234 ​ ​ (9) ​ ​ 18,734 ​ ​ ​ $ 5,221,296 ​ $ 35,980 ​ $ (63,798) ​ $ 5,193,478 ​ During the three and nine months ended September 30, 2022, there were gains of $103,000 and losses of $73,000, a net gain of $30,000, realized from the sale of available for sale securities. During the three months ended March 31, 2022, the Company sold securities totaling million that were legacy Atlantic Capital securities. These securities were marked to fair value at merger and therefore resulted in gain or loss on sale. During the three months ended from the sale of available for sale securities. The following is the amortized cost and carrying value of other investment securities: ​ ​ ​ ​ ​ ​ ​ Carrying (Dollars in thousands) Value September 30, 2022: ​ ​ ​ ​ Federal Home Loan Bank stock ​ $ 15,095 ​ Federal Reserve Bank stock ​ ​ 150,261 ​ Investment in unconsolidated subsidiaries ​ 3,563 ​ Other nonmarketable investment securities ​ 10,836 ​ ​ ​ $ 179,755 ​ December 31, 2021: ​ ​ ​ ​ Federal Home Loan Bank stock ​ $ 16,283 ​ Federal Reserve Bank stock ​ ​ 129,716 ​ Investment in unconsolidated subsidiaries ​ 3,563 ​ Other nonmarketable investment securities ​ 11,006 ​ ​ ​ $ 160,568 ​ Our other investment securities consist of non-marketable equity securities that have no readily determinable market value. Accordingly, when evaluating these securities for impairment, Management considers the ultimate recoverability of the par value rather than recognizing temporary declines in value. As of The amortized cost and fair value of debt securities at September 30, 2022 , by contractual maturity are detailed below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without prepayment penalties. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities ​ Securities ​ ​ Held to Maturity ​ Available for Sale ​ ​ Amortized ​ Fair ​ Amortized ​ Fair (Dollars in thousands) Cost Value Cost Value Due in one year or less $ — ​ $ — $ 107,230 $ 105,253 ​ Due after one year through five years ​ 101,152 ​ 92,747 ​ 487,512 ​ 466,754 ​ Due after five years through ten years ​ 359,629 ​ 321,679 ​ 1,149,845 ​ 999,829 ​ Due after ten years ​ 2,277,397 ​ 1,884,736 ​ 4,575,309 ​ 3,797,774 ​ ​ ​ $ 2,738,178 ​ $ 2,299,162 ​ $ 6,319,896 ​ $ 5,369,610 ​ Information pertaining to our securities with gross unrealized losses at September 30, 2022 and December 31, 2021, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less Than ​ Twelve Months ​ ​ Twelve Months ​ or More ​ ​ Gross Unrealized ​ Fair ​ Gross Unrealized ​ Fair (Dollars in thousands) Losses Value Losses Value September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities Held to Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 10,903 ​ $ 98,443 ​ $ 19,188 ​ $ 68,727 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 90,161 ​ ​ 627,193 ​ ​ 177,344 ​ ​ 738,063 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 34,942 ​ 265,792 ​ 29,660 ​ 104,370 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 21,199 ​ ​ 113,354 ​ ​ 45,167 ​ ​ 186,507 ​ Small Business Administration loan-backed securities ​ ​ — ​ ​ — ​ ​ 11,143 ​ ​ 47,350 ​ ​ ​ $ 157,205 ​ $ 1,104,782 ​ $ 282,502 ​ $ 1,145,017 ​ Securities Available for Sale ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasuries ​ $ 7,358 ​ $ 264,425 ​ $ — ​ $ — ​ U.S. Government agencies ​ ​ 12,248 ​ ​ 159,395 ​ ​ 15,072 ​ ​ 59,228 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 122,435 ​ ​ 874,957 ​ ​ 196,035 ​ ​ 854,926 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 35,684 ​ 368,713 ​ 66,222 ​ 257,017 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ 66,849 ​ ​ 463,425 ​ ​ 132,795 ​ ​ 528,853 ​ State and municipal obligations ​ 223,328 ​ ​ 917,487 ​ ​ 29,422 ​ ​ 75,275 ​ Small Business Administration loan-backed securities ​ 18,118 ​ ​ 167,715 ​ ​ 25,604 ​ ​ 178,604 ​ Corporate securities ​ ​ 2,252 ​ ​ 28,343 ​ ​ — ​ ​ — ​ ​ ​ $ 488,272 ​ $ 3,244,460 ​ $ 465,150 ​ $ 1,953,903 ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities Held to Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 1,745 ​ $ 86,168 ​ $ 882 ​ $ 24,118 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 18,768 ​ ​ 868,327 ​ ​ 5,510 ​ ​ 184,819 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 4,937 ​ 169,240 ​ — ​ — ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 4,902 ​ ​ 154,963 ​ ​ 3,119 ​ ​ 75,450 ​ Small Business Administration loan-backed securities ​ ​ 1,281 ​ ​ 37,408 ​ ​ 1,011 ​ ​ 22,890 ​ ​ ​ $ 31,633 ​ $ 1,316,106 ​ $ 10,522 ​ $ 307,277 ​ Securities Available for Sale ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 529 ​ $ 73,353 ​ $ 1,236 ​ $ 23,763 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 17,381 ​ ​ 1,274,934 ​ ​ 8,604 ​ ​ 221,435 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 10,911 ​ 432,300 ​ — ​ — ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 13,120 ​ ​ 846,581 ​ ​ 5,310 ​ ​ 98,106 ​ State and municipal obligations ​ ​ 1,867 ​ ​ 123,987 ​ ​ 352 ​ ​ 8,579 ​ Small Business Administration loan-backed securities ​ ​ 2,720 ​ ​ 179,168 ​ ​ 1,759 ​ ​ 110,309 ​ Corporate securities ​ 9 ​ ​ 4,991 ​ ​ — ​ ​ — ​ ​ ​ $ 46,537 ​ $ 2,935,314 ​ $ 17,261 ​ $ 462,192 ​ Management evaluates securities for impairment where there has been a decline in fair value below the amortized cost basis of a security to determine whether there is a credit loss associated with the decline in fair value on at least a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Credit losses are calculated individually, rather than collectively, using a discounted cash flow method, whereby Management compares the present value of expected cash flows with the amortized cost basis of the security. The credit loss component would be recognized through the provision for credit losses. Consideration is given to (1) the financial condition and near-term prospects of the issuer including looking at default and delinquency rates, (2) the outlook for receiving the contractual cash flows of the investments, (3) the length of time and the extent to which the fair value has been less than cost, (4) our intent and ability to retain our investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value or for a debt security whether it is more-likely-than-not that we will be required to sell the debt security prior to recovering its fair value, (5) the anticipated outlook for changes in the general level of interest rates, (6) credit ratings, (7) third-party guarantees, and (8) collateral values. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, the results of reviews of the issuer’s financial condition, and the issuer’s anticipated ability to pay the contractual cash flows of the investments. The Company performed an analysis that determined that the following securities have a zero expected credit loss: U.S. Treasury Securities, Agency-Backed Securities including securities issued by Ginnie Mae, Fannie Mae, FHLB, FFCB and SBA. All of the U.S. Treasury and Agency-Backed Securities have the full faith and credit backing of the United States Government or one of its agencies. Municipal securities and all other securities that do not have a zero expected credit loss are evaluated quarterly to determine whether there is a credit loss associated with a decline in fair value. All debt securities in an unrealized loss position as of continue to perform as scheduled and we do not believe there is a credit loss or a provision for credit losses is necessary. ​ Also, as part of our evaluation of our intent and ability to hold investments for a period of time sufficient to allow for any anticipated recovery in the market, we consider our investment strategy, cash flow needs, liquidity position, capital adequacy and interest rate risk position. We do not currently intend to sell the securities within the portfolio and it is not more-likely-than-not that we will be required to sell the debt securities. See Note 2 — Summary of Significant Account Policies for further discussion. ​ Management continues to monitor all of our securities with a high degree of scrutiny. There can be no assurance that we will not conclude in future periods that conditions existing at that time indicate some or all of its securities may be sold or would require a charge to earnings as a provision for credit losses in such periods. ​ At September 30, 2022 and December 31, 2021 , trading securities, at estimated fair value, were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ (Dollars in thousands) 2022 2021 ​ U.S. Government agencies ​ $ 12,017 ​ $ 5,154 ​ Residential mortgage pass-through securities issued or guaranteed by U.S. ​ ​ ​ ​ ​ ​ ​ government agencies or sponsored enterprises ​ ​ 11,556 ​ ​ 6,853 ​ Other residential mortgage issued or guaranteed by U.S. government ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ 5,921 ​ 12,315 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 3,116 ​ ​ 29,667 ​ State and municipal obligations ​ ​ 18,060 ​ ​ 20,798 ​ Other debt securities ​ ​ 1,270 ​ ​ 2,902 ​ ​ ​ $ 51,940 ​ $ 77,689 ​ Net gains (losses) on trading securities for the three and nine months ended September 30, 2022 and 2021 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ (Dollars in thousands) 2022 2021 ​ 2022 ​ 2021 ​ Net gains (losses) on sales transaction ​ $ 76 ​ $ 489 ​ $ (1,544) ​ $ 944 ​ Net mark to mark gains (losses) ​ ​ 465 ​ ​ (693) ​ ​ (1,969) ​ ​ (882) ​ Net gains (losses) on trading securities ​ $ 541 ​ $ (204) ​ $ (3,513) ​ $ 62 ​ ​

Loans

Loans	9 Months Ended
	Sep. 30, 2022
Loans
Loans	Note 6 — Loans ​ The following is a summary of total loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ (Dollars in thousands) 2022 2021 Loans: ​ ​ ​ ​ ​ Construction and land development (1) ​ $ 2,550,552 ​ $ 2,029,216 ​ Commercial non-owner occupied ​ 7,964,470 ​ 6,735,699 ​ Commercial owner occupied real estate ​ 5,426,216 ​ 4,970,116 ​ Consumer owner occupied (2) ​ 4,729,790 ​ 3,638,364 ​ Home equity loans ​ 1,247,330 ​ 1,168,594 ​ Commercial and industrial ​ 4,977,737 ​ 3,761,133 ​ Other income producing property ​ 676,846 ​ 696,804 ​ Consumer ​ 1,259,846 ​ 904,657 ​ Other loans ​ 3,516 ​ 23,583 ​ Total loans ​ 28,836,303 ​ 23,928,166 ​ Less allowance for credit losses ​ (324,398) ​ (301,807) ​ Loans, net ​ $ 28,511,905 ​ $ 23,626,359 ​ (1) Construction and land development includes loans for both commercial construction and development, as well as loans for 1-4 family construction and lot loans. (2) Consumer owner occupied real estate includes loans on both 1-4 family owner occupied property, as well as loans collateralized by 1-4 family owner occupied property with a business intent. In accordance with the adoption of ASU 2016-13, the above table reflects the loan portfolio at the amortized cost basis for the periods September 30, 2022 and December 31, 2021, to include net deferred costs of $45.9 million compared to net deferred fees of $15.9 million, respectively, and unamortized discount total related to loans acquired of $79.5 million and $68.0 million, respectively. The Company purchased loans through its acquisition of Atlantic Capital in the first quarter, for which there was, at acquisition, evidence of more than an insignificant deterioration of credit quality since origination. The carrying amount of those loans is as follows: ​ ​ ​ ​ ​ ​ (Dollars in thousands) ​ March 1, 2022 ​ Book value of acquired loans at acquisition ​ $ 137,874 ​ Allowance for credit losses at acquisition ​ (13,758) ​ Non-credit discount at acquisition ​ (5,943) ​ Carrying value or book value of acquired loans at acquisition ​ $ 118,173 ​ ​ As part of the ongoing monitoring of the credit quality of our loan portfolio, Management tracks certain credit quality indicators, including trends related to (i) the level of classified loans, (ii) net charge-offs, (iii) non-performing loans (see details below), and (iv) the general economic conditions of the markets that we serve. ​ We use a risk grading matrix to assign a risk grade to each commercial loan. Classified loans are assessed at a minimum every six months. A description of the general characteristics of the risk grades is as follows: ​ ● Pass —These loans range from minimal credit risk to average, however, still acceptable credit risk. ● Special mention —A special mention loan has potential weaknesses that deserve Management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or the institution’s credit position at some future date. ● Substandard —A substandard loan is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well-defined weakness, or weaknesses, that may jeopardize the liquidation of the debt. A substandard loan is characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. ● Doubtful —A doubtful loan has all of the weaknesses inherent in one classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of the currently existing facts, conditions and values, highly questionable and improbable. ​ The following tables present the credit risk profile by risk grade of commercial loans by origination year as of September 30, 2022 and December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ ​ Amortized Cost Basis by Origination Year As of September 30, 2022 ​ 2022 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ Prior ​ Revolving ​ Total Construction and land development ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 584,646 ​ $ 688,921 ​ $ 177,223 ​ $ 77,949 ​ $ 15,244 ​ $ 35,460 ​ $ 71,362 ​ $ 1,650,805 Special mention ​ ​ 561 ​ ​ 2,258 ​ ​ 26 ​ ​ 87 ​ ​ 7,263 ​ ​ 556 ​ ​ — ​ ​ 10,751 Substandard ​ ​ 349 ​ ​ 652 ​ ​ 13 ​ ​ 2,345 ​ ​ — ​ ​ 4,345 ​ ​ — ​ ​ 7,704 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 6 ​ ​ — ​ ​ 6 Total Construction and land development ​ $ 585,556 ​ $ 691,831 ​ $ 177,262 ​ $ 80,381 ​ $ 22,507 ​ $ 40,367 ​ $ 71,362 ​ $ 1,669,266 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial non-owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,768,208 ​ $ 1,912,649 ​ $ 771,153 ​ $ 1,002,194 ​ $ 553,378 ​ $ 1,567,763 ​ $ 128,190 ​ $ 7,703,535 Special mention ​ ​ 14,054 ​ ​ 6,914 ​ ​ 42,841 ​ ​ 6,277 ​ ​ 28,528 ​ ​ 27,283 ​ ​ — ​ ​ 125,897 Substandard ​ ​ 8,890 ​ ​ 24,968 ​ ​ 620 ​ ​ 40,807 ​ ​ 7,966 ​ ​ 49,054 ​ ​ 2,653 ​ ​ 134,958 Doubtful ​ ​ — ​ ​ 1 ​ ​ — ​ ​ 79 ​ ​ — ​ ​ — ​ ​ — ​ ​ 80 Total Commercial non-owner occupied ​ $ 1,791,152 ​ $ 1,944,532 ​ $ 814,614 ​ $ 1,049,357 ​ $ 589,872 ​ $ 1,644,100 ​ $ 130,843 ​ $ 7,964,470 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial Owner Occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 838,791 ​ $ 1,167,238 ​ $ 743,632 ​ $ 737,627 ​ $ 476,813 ​ $ 1,134,341 ​ $ 72,065 ​ $ 5,170,507 Special mention ​ ​ 11,866 ​ ​ 25,820 ​ ​ 6,032 ​ ​ 11,305 ​ ​ 8,907 ​ ​ 60,034 ​ ​ 2,281 ​ ​ 126,245 Substandard ​ ​ 6,545 ​ ​ 21,691 ​ ​ 17,877 ​ ​ 19,406 ​ ​ 6,456 ​ ​ 56,461 ​ ​ 1,003 ​ ​ 129,439 Doubtful ​ ​ — ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — ​ ​ 24 ​ ​ — ​ ​ 25 Total commercial owner occupied ​ $ 857,202 ​ $ 1,214,749 ​ $ 767,542 ​ $ 768,338 ​ $ 492,176 ​ $ 1,250,860 ​ $ 75,349 ​ $ 5,426,216 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,224,618 ​ $ 941,383 ​ $ 577,778 ​ $ 304,904 ​ $ 231,177 ​ $ 373,938 ​ $ 1,186,170 ​ $ 4,839,968 Special mention ​ ​ 5,790 ​ ​ 4,034 ​ ​ 1,013 ​ ​ 2,949 ​ ​ 4,893 ​ ​ 5,266 ​ ​ 22,222 ​ ​ 46,167 Substandard ​ ​ 6,154 ​ ​ 28,588 ​ ​ 2,127 ​ ​ 5,746 ​ ​ 6,965 ​ ​ 7,460 ​ ​ 34,288 ​ ​ 91,328 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 155 ​ ​ 69 ​ ​ 50 ​ ​ 274 Total commercial and industrial ​ $ 1,236,562 ​ $ 974,005 ​ $ 580,918 ​ $ 313,599 ​ $ 243,190 ​ $ 386,733 ​ $ 1,242,730 ​ $ 4,977,737 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other income producing property ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 111,929 ​ $ 96,377 ​ $ 62,628 ​ $ 48,310 ​ $ 52,095 ​ $ 121,664 ​ $ 47,962 ​ $ 540,965 Special mention ​ ​ 968 ​ ​ 1,331 ​ ​ 1,295 ​ ​ 317 ​ ​ 193 ​ ​ 4,463 ​ ​ 173 ​ ​ 8,740 Substandard ​ ​ 648 ​ ​ 472 ​ ​ 1,325 ​ ​ 301 ​ ​ 223 ​ ​ 12,911 ​ ​ 1,342 ​ ​ 17,222 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 5 ​ ​ 131 ​ ​ 136 Total other income producing property ​ $ 113,545 ​ $ 98,180 ​ $ 65,248 ​ $ 48,928 ​ $ 52,511 ​ $ 139,043 ​ $ 49,608 ​ $ 567,063 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 5,281 ​ $ 3,507 ​ $ 1,983 ​ $ 778 ​ $ 72 ​ $ 354 ​ $ 15,331 ​ $ 27,306 Special mention ​ ​ 545 ​ ​ 21 ​ ​ 165 ​ ​ 287 ​ ​ — ​ ​ — ​ ​ 266 ​ ​ 1,284 Substandard ​ ​ — ​ ​ 96 ​ ​ 13 ​ ​ 1,632 ​ ​ — ​ ​ 212 ​ ​ 151 ​ ​ 2,104 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 145 ​ ​ — ​ ​ 145 Total Consumer owner occupied ​ $ 5,826 ​ $ 3,624 ​ $ 2,161 ​ $ 2,697 ​ $ 72 ​ $ 711 ​ $ 15,748 ​ $ 30,839 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 3,516 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 3,516 Special mention ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Substandard ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Total other loans ​ $ 3,516 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 3,516 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Commercial Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 4,536,989 ​ $ 4,810,075 ​ $ 2,334,397 ​ $ 2,171,762 ​ $ 1,328,779 ​ $ 3,233,520 ​ $ 1,521,080 ​ $ 19,936,602 Special mention ​ ​ 33,784 ​ ​ 40,378 ​ ​ 51,372 ​ ​ 21,222 ​ ​ 49,784 ​ ​ 97,602 ​ ​ 24,942 ​ ​ 319,084 Substandard ​ ​ 22,586 ​ ​ 76,467 ​ ​ 21,975 ​ ​ 70,237 ​ ​ 21,610 ​ ​ 130,443 ​ ​ 39,437 ​ ​ 382,755 Doubtful ​ ​ — ​ ​ 1 ​ ​ 1 ​ ​ 79 ​ ​ 155 ​ ​ 249 ​ ​ 181 ​ ​ 666 Total Commercial Loans ​ $ 4,593,359 ​ $ 4,926,921 ​ $ 2,407,745 ​ $ 2,263,300 ​ $ 1,400,328 ​ $ 3,461,814 ​ $ 1,585,640 ​ $ 20,639,107 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ ​ Amortized Cost Basis by Origination Year As of December 31, 2021 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ 2017 ​ Prior ​ Revolving ​ Total Construction and land development ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 570,166 ​ $ 360,488 ​ $ 206,586 ​ $ 38,866 ​ $ 24,728 ​ $ 49,321 ​ $ 76,680 ​ $ 1,326,835 Special mention ​ ​ 2,347 ​ ​ 3,067 ​ ​ 186 ​ ​ — ​ ​ 1,557 ​ ​ 1,715 ​ ​ 487 ​ ​ 9,359 Substandard ​ ​ 960 ​ ​ 210 ​ ​ 2,304 ​ ​ 326 ​ ​ 543 ​ ​ 2,209 ​ ​ — ​ ​ 6,552 Doubtful ​ ​ 1 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 8 ​ ​ — ​ ​ 9 Total Construction and land development ​ $ 573,474 ​ $ 363,765 ​ $ 209,076 ​ $ 39,192 ​ $ 26,828 ​ $ 53,253 ​ $ 77,167 ​ $ 1,342,755 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial non-owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,812,512 ​ $ 798,171 ​ $ 1,061,021 ​ $ 676,803 ​ $ 494,618 ​ $ 1,371,729 ​ $ 102,763 ​ $ 6,317,617 Special mention ​ ​ 16,683 ​ ​ 12,985 ​ ​ 14,138 ​ ​ 36,875 ​ ​ 25,729 ​ ​ 110,109 ​ ​ — ​ ​ 216,519 Substandard ​ ​ 23,035 ​ ​ 160 ​ ​ 64,408 ​ ​ 23,346 ​ ​ 31,952 ​ ​ 56,477 ​ ​ 2,139 ​ ​ 201,517 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 46 ​ ​ — ​ ​ 46 Total Commercial non-owner occupied ​ $ 1,852,230 ​ $ 811,316 ​ $ 1,139,567 ​ $ 737,024 ​ $ 552,299 ​ $ 1,538,361 ​ $ 104,902 ​ $ 6,735,699 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial Owner Occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,182,722 ​ $ 780,339 ​ $ 801,162 ​ $ 549,642 ​ $ 428,163 ​ $ 980,701 ​ $ 69,739 ​ $ 4,792,468 Special mention ​ ​ 9,152 ​ ​ 4,257 ​ ​ 7,331 ​ ​ 10,860 ​ ​ 22,792 ​ ​ 49,083 ​ ​ 115 ​ ​ 103,590 Substandard ​ ​ 7,375 ​ ​ 2,907 ​ ​ 8,587 ​ ​ 2,053 ​ ​ 18,600 ​ ​ 34,431 ​ ​ 80 ​ ​ 74,033 Doubtful ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — ​ ​ — ​ ​ 24 ​ ​ — ​ ​ 25 Total commercial owner occupied ​ $ 1,199,249 ​ $ 787,504 ​ $ 817,080 ​ $ 562,555 ​ $ 469,555 ​ $ 1,064,239 ​ $ 69,934 ​ $ 4,970,116 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,198,849 ​ $ 618,676 ​ $ 360,551 ​ $ 267,772 ​ $ 178,538 ​ $ 219,339 ​ $ 860,134 ​ $ 3,703,859 Special mention ​ ​ 2,759 ​ ​ 1,519 ​ ​ 2,434 ​ ​ 1,268 ​ ​ 3,224 ​ ​ 3,871 ​ ​ 3,281 ​ ​ 18,356 Substandard ​ ​ 738 ​ ​ 5,965 ​ ​ 8,212 ​ ​ 2,653 ​ ​ 3,438 ​ ​ 5,183 ​ ​ 12,701 ​ ​ 38,890 Doubtful ​ ​ — ​ ​ — ​ ​ 5 ​ ​ 3 ​ ​ 2 ​ ​ 16 ​ ​ 2 ​ ​ 28 Total commercial and industrial ​ $ 1,202,346 ​ $ 626,160 ​ $ 371,202 ​ $ 271,696 ​ $ 185,202 ​ $ 228,409 ​ $ 876,118 ​ $ 3,761,133 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other income producing property ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 105,533 ​ $ 73,583 ​ $ 67,173 ​ $ 76,971 ​ $ 56,343 ​ $ 142,183 ​ $ 56,190 ​ $ 577,976 Special mention ​ ​ 1,580 ​ ​ 1,851 ​ ​ 1,063 ​ ​ 232 ​ ​ 1,381 ​ ​ 13,526 ​ ​ 424 ​ ​ 20,057 Substandard ​ ​ 1,304 ​ ​ 482 ​ ​ 298 ​ ​ 166 ​ ​ 787 ​ ​ 12,531 ​ ​ 46 ​ ​ 15,614 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 6 ​ ​ — ​ ​ 6 Total other income producing property ​ $ 108,417 ​ $ 75,916 ​ $ 68,534 ​ $ 77,369 ​ $ 58,511 ​ $ 168,246 ​ $ 56,660 ​ $ 613,653 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 3,513 ​ $ 2,874 ​ $ 1,099 ​ $ 85 ​ $ 139 ​ $ 820 ​ $ 16,977 ​ $ 25,507 Special mention ​ ​ 1,219 ​ ​ 180 ​ ​ 2,430 ​ ​ 81 ​ ​ — ​ ​ 3 ​ ​ — ​ ​ 3,913 Substandard ​ ​ — ​ ​ 16 ​ ​ 238 ​ ​ — ​ ​ — ​ ​ 223 ​ ​ — ​ ​ 477 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ 1 ​ ​ — ​ ​ 145 ​ ​ — ​ ​ 146 Total Consumer owner occupied ​ $ 4,732 ​ $ 3,070 ​ $ 3,767 ​ $ 167 ​ $ 139 ​ $ 1,191 ​ $ 16,977 ​ $ 30,043 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 23,583 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 23,583 Special mention ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Substandard ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Total other loans ​ $ 23,583 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 23,583 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Commercial Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 4,896,878 ​ $ 2,634,131 ​ $ 2,497,592 ​ $ 1,610,139 ​ $ 1,182,529 ​ $ 2,764,093 ​ $ 1,182,483 ​ $ 16,767,845 Special mention ​ ​ 33,740 ​ ​ 23,859 ​ ​ 27,582 ​ ​ 49,316 ​ ​ 54,683 ​ ​ 178,307 ​ ​ 4,307 ​ ​ 371,794 Substandard ​ ​ 33,412 ​ ​ 9,740 ​ ​ 84,047 ​ ​ 28,544 ​ ​ 55,320 ​ ​ 111,054 ​ ​ 14,966 ​ ​ 337,083 Doubtful ​ ​ 1 ​ ​ 1 ​ ​ 5 ​ ​ 4 ​ ​ 2 ​ ​ 245 ​ ​ 2 ​ ​ 260 Total Commercial Loans ​ $ 4,964,031 ​ $ 2,667,731 ​ $ 2,609,226 ​ $ 1,688,003 ​ $ 1,292,534 ​ $ 3,053,699 ​ $ 1,201,758 ​ $ 17,476,982 For the consumer segment, delinquency of a loan is determined by past due status. Consumer loans are automatically placed on nonaccrual status once the loan is 90 days past due. Construction and land development loans are on 1-4 properties and lots. ​ The following table presents the credit risk profile by past due status of consumer loans by origination year as of September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ Amortized Cost Basis by Origination Year As of September 30, 2022 ​ 2022 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ Prior ​ Revolving ​ Total Consumer owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 1,351,309 ​ $ 1,335,059 ​ $ 650,548 ​ $ 327,852 ​ $ 193,413 ​ $ 824,959 ​ $ 1,227 ​ $ 4,684,367 30 days past due ​ ​ 178 ​ ​ 1,247 ​ ​ 432 ​ ​ 786 ​ ​ 99 ​ ​ 2,753 ​ ​ — ​ ​ 5,495 60 days past due ​ ​ — ​ ​ 240 ​ ​ 462 ​ ​ 314 ​ ​ 194 ​ ​ 1,105 ​ ​ — ​ ​ 2,315 90 days past due ​ ​ — ​ ​ 433 ​ ​ 451 ​ ​ 913 ​ ​ 772 ​ ​ 4,205 ​ ​ — ​ ​ 6,774 Total Consumer owner occupied ​ $ 1,351,487 ​ $ 1,336,979 ​ $ 651,893 ​ $ 329,865 ​ $ 194,478 ​ $ 833,022 ​ $ 1,227 ​ $ 4,698,951 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Home equity loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 4,837 ​ $ 5,303 ​ $ 3,803 ​ $ 2,257 ​ $ 1,881 ​ $ 20,142 ​ $ 1,203,325 ​ $ 1,241,548 30 days past due ​ ​ — ​ ​ — ​ ​ 155 ​ ​ 170 ​ ​ 250 ​ ​ 36 ​ ​ 3,009 ​ ​ 3,620 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ 195 ​ ​ — ​ ​ 313 ​ ​ 347 ​ ​ 855 90 days past due ​ ​ — ​ ​ 60 ​ ​ 40 ​ ​ 54 ​ ​ — ​ ​ 942 ​ ​ 211 ​ ​ 1,307 Total Home equity loans ​ $ 4,837 ​ $ 5,363 ​ $ 3,998 ​ $ 2,676 ​ $ 2,131 ​ $ 21,433 ​ $ 1,206,892 ​ $ 1,247,330 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 327,444 ​ $ 225,458 ​ $ 123,591 ​ $ 94,584 ​ $ 49,018 ​ $ 149,297 ​ $ 258,354 ​ $ 1,227,746 30 days past due ​ ​ 134 ​ ​ 311 ​ ​ 178 ​ ​ 234 ​ ​ 154 ​ ​ 1,325 ​ ​ 16,509 ​ ​ 18,845 60 days past due ​ ​ 154 ​ ​ 85 ​ ​ 37 ​ ​ 10 ​ ​ 110 ​ ​ 891 ​ ​ 9,880 ​ ​ 11,167 90 days past due ​ ​ 1 ​ ​ 21 ​ ​ 20 ​ ​ 25 ​ ​ 35 ​ ​ 1,399 ​ ​ 587 ​ ​ 2,088 Total consumer ​ $ 327,733 ​ $ 225,875 ​ $ 123,826 ​ $ 94,853 ​ $ 49,317 ​ $ 152,912 ​ $ 285,330 ​ $ 1,259,846 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction and land development ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 320,794 ​ $ 446,805 ​ $ 74,247 ​ $ 14,872 ​ $ 7,608 ​ $ 16,011 ​ $ 355 ​ $ 880,692 30 days past due ​ ​ — ​ ​ — ​ ​ 24 ​ ​ 20 ​ ​ 69 ​ ​ 24 ​ ​ — ​ ​ 137 60 days past due ​ ​ — ​ ​ — ​ ​ 300 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 300 90 days past due ​ ​ — ​ ​ — ​ ​ 157 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 157 Total Construction and land development ​ $ 320,794 ​ $ 446,805 ​ $ 74,728 ​ $ 14,892 ​ $ 7,677 ​ $ 16,035 ​ $ 355 ​ $ 881,286 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other income producing property ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 32,433 ​ $ 21,664 ​ $ 4,989 ​ $ 2,819 ​ $ 4,580 ​ $ 42,373 ​ $ 634 ​ $ 109,492 30 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 165 ​ ​ — ​ ​ 165 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — 90 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 126 ​ ​ — ​ ​ 126 Total other income producing property ​ $ 32,433 ​ $ 21,664 ​ $ 4,989 ​ $ 2,819 ​ $ 4,580 ​ $ 42,664 ​ $ 634 ​ $ 109,783 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Consumer Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 2,036,817 ​ $ 2,034,289 ​ $ 857,178 ​ $ 442,384 ​ $ 256,500 ​ $ 1,052,782 ​ $ 1,463,895 ​ $ 8,143,845 30 days past due ​ ​ 312 ​ ​ 1,558 ​ ​ 789 ​ ​ 1,210 ​ ​ 572 ​ ​ 4,303 ​ ​ 19,518 ​ ​ 28,262 60 days past due ​ ​ 154 ​ ​ 325 ​ ​ 799 ​ ​ 519 ​ ​ 304 ​ ​ 2,309 ​ ​ 10,227 ​ ​ 14,637 90 days past due ​ ​ 1 ​ ​ 514 ​ ​ 668 ​ ​ 992 ​ ​ 807 ​ ​ 6,672 ​ ​ 798 ​ ​ 10,452 Total Consumer Loans ​ $ 2,037,284 ​ $ 2,036,686 ​ $ 859,434 ​ $ 445,105 ​ $ 258,183 ​ $ 1,066,066 ​ $ 1,494,438 ​ $ 8,197,196 The following table presents total loans by origination year as of September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ Amortized Cost Basis by Origination Year As of September 30, 2022 ​ 2022 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ Prior ​ Revolving ​ Total Total Loans ​ $ 6,630,643 ​ $ 6,963,607 ​ $ 3,267,179 ​ $ 2,708,405 ​ $ 1,658,511 ​ $ 4,527,880 ​ $ 3,080,078 ​ $ 28,836,303 ​ The following table presents the credit risk profile by past due status of consumer loans by origination year as of December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ Amortized Cost Basis by Origination Year As of December 31, 2021 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ 2017 ​ Prior ​ Revolving ​ Total Consumer owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 1,192,449 ​ $ 710,828 ​ $ 405,138 ​ $ 246,487 ​ $ 228,876 ​ $ 810,605 ​ $ 4 ​ $ 3,594,387 30 days past due ​ ​ 354 ​ ​ 666 ​ ​ 234 ​ ​ 472 ​ ​ 1,068 ​ ​ 2,230 ​ ​ — ​ ​ 5,024 60 days past due ​ ​ — ​ ​ 330 ​ ​ 218 ​ ​ 254 ​ ​ 111 ​ ​ 928 ​ ​ — ​ ​ 1,841 90 days past due ​ ​ 235 ​ ​ 574 ​ ​ 691 ​ ​ 549 ​ ​ 274 ​ ​ 4,746 ​ ​ — ​ ​ 7,069 Total Consumer owner occupied ​ $ 1,193,038 ​ $ 712,398 ​ $ 406,281 ​ $ 247,762 ​ $ 230,329 ​ $ 818,509 ​ $ 4 ​ $ 3,608,321 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Home equity loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 7,128 ​ $ 5,648 ​ $ 4,745 ​ $ 2,180 ​ $ 993 ​ $ 24,716 ​ $ 1,116,621 ​ $ 1,162,031 30 days past due ​ ​ 6 ​ ​ 49 ​ ​ 68 ​ ​ 71 ​ ​ 24 ​ ​ 491 ​ ​ 2,200 ​ ​ 2,909 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 603 ​ ​ 339 ​ ​ 942 90 days past due ​ ​ 75 ​ ​ 65 ​ ​ 172 ​ ​ 180 ​ ​ 22 ​ ​ 1,548 ​ ​ 650 ​ ​ 2,712 Total Home equity loans ​ $ 7,209 ​ $ 5,762 ​ $ 4,985 ​ $ 2,431 ​ $ 1,039 ​ $ 27,358 ​ $ 1,119,810 ​ $ 1,168,594 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 298,779 ​ $ 169,443 ​ $ 127,757 ​ $ 69,892 ​ $ 36,304 ​ $ 151,948 ​ $ 44,864 ​ $ 898,987 30 days past due ​ ​ 229 ​ ​ 364 ​ ​ 208 ​ ​ 191 ​ ​ 132 ​ ​ 1,570 ​ ​ 137 ​ ​ 2,831 60 days past due ​ ​ 145 ​ ​ 82 ​ ​ 90 ​ ​ 124 ​ ​ 90 ​ ​ 658 ​ ​ 17 ​ ​ 1,206 90 days past due ​ ​ 74 ​ ​ 121 ​ ​ 181 ​ ​ 109 ​ ​ 29 ​ ​ 1,119 ​ ​ — ​ ​ 1,633 Total consumer ​ $ 299,227 ​ $ 170,010 ​ $ 128,236 ​ $ 70,316 ​ $ 36,555 ​ $ 155,295 ​ $ 45,018 ​ $ 904,657 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction and land development ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 411,728 ​ $ 204,368 ​ $ 33,965 ​ $ 13,429 ​ $ 8,484 ​ $ 14,185 ​ $ 162 ​ $ 686,321 30 days past due ​ ​ — ​ ​ 24 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 24 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 12 ​ ​ — ​ ​ 12 90 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 104 ​ ​ — ​ ​ 104 Total Construction and land development ​ $ 411,728 ​ $ 204,392 ​ $ 33,965 ​ $ 13,429 ​ $ 8,484 ​ $ 14,301 ​ $ 162 ​ $ 686,461 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other income producing property ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 22,131 ​ $ 5,620 ​ $ 4,906 ​ $ 4,977 ​ $ 6,303 ​ $ 37,575 ​ $ 1,379 ​ $ 82,891 30 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 90 ​ ​ — ​ ​ 90 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 156 ​ ​ — ​ ​ 156 90 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 14 ​ ​ — ​ ​ 14 Total other income producing property ​ $ 22,131 ​ $ 5,620 ​ $ 4,906 ​ $ 4,977 ​ $ 6,303 ​ $ 37,835 ​ $ 1,379 ​ $ 83,151 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Consumer Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 1,947,911 ​ $ 1,095,907 ​ $ 576,511 ​ $ 336,965 ​ $ 280,960 ​ $ 1,039,029 ​ $ 1,147,334 ​ $ 6,424,617 30 days past due ​ ​ 589 ​ ​ 1,103 ​ ​ 510 ​ ​ 734 ​ ​ 1,224 ​ ​ 4,381 ​ ​ 2,337 ​ ​ 10,878 60 days past due ​ ​ 145 ​ ​ 412 ​ ​ 308 ​ ​ 378 ​ ​ 201 ​ ​ 2,357 ​ ​ 356 ​ ​ 4,157 90 days past due ​ ​ 384 ​ ​ 760 ​ ​ 1,044 ​ ​ 838 ​ ​ 325 ​ ​ 7,531 ​ ​ 650 ​ ​ 11,532 Total Consumer Loans ​ $ 1,949,029 ​ $ 1,098,182 ​ $ 578,373 ​ $ 338,915 ​ $ 282,710 ​ $ 1,053,298 ​ $ 1,150,677 ​ $ 6,451,184 The following table presents total loans by origination year as of December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ Amortized Cost Basis by Origination Year As of December 31, 2021 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ 2017 ​ Prior ​ Revolving ​ Total Total Loans ​ $ 6,913,060 ​ $ 3,765,913 ​ $ 3,187,599 ​ $ 2,026,918 ​ $ 1,575,244 ​ $ 4,106,997 ​ $ 2,352,435 ​ $ 23,928,166 The following table presents an aging analysis of past due accruing loans, segregated by class: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30 - 59 Days 60 - 89 Days 90+ Days Total ​ Non- ​ Total (Dollars in thousands) ​ Past Due ​ Past Due ​ Past Due ​ Past Due ​ Current ​ Accruing ​ Loans September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction and land development ​ $ 843 ​ $ 464 ​ $ 21 ​ $ 1,328 ​ $ 2,548,764 ​ $ 460 ​ $ 2,550,552 Commercial non-owner occupied ​ 10,035 ​ 586 ​ — ​ 10,621 ​ 7,932,535 ​ 21,314 ​ 7,964,470 Commercial owner occupied ​ 2,901 ​ ​ 1,318 ​ 294 ​ 4,513 ​ 5,390,789 ​ 30,914 ​ 5,426,216 Consumer owner occupied ​ 4,740 ​ 368 ​ — ​ 5,108 ​ 4,707,496 ​ 17,186 ​ 4,729,790 Home equity loans ​ 3,104 ​ 659 ​ — ​ 3,763 ​ 1,237,245 ​ 6,322 ​ 1,247,330 Commercial and industrial ​ 29,527 ​ 9,036 ​ 3,211 ​ 41,774 ​ 4,922,124 ​ 13,839 ​ 4,977,737 Other income producing property ​ 2,191 ​ 1,110 ​ 262 ​ 3,563 ​ 670,821 ​ 2,462 ​ 676,846 Consumer ​ 18,488 ​ 10,963 ​ — ​ 29,451 ​ 1,226,652 ​ 3,743 ​ 1,259,846 Other loans ​ — ​ — ​ — ​ — ​ 3,516 ​ — ​ 3,516 ​ ​ $ 71,829 ​ $ 24,504 ​ $ 3,788 ​ $ 100,121 ​ $ 28,639,942 ​ $ 96,240 ​ $ 28,836,303 December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction and land development ​ $ 1,176 ​ $ 59 ​ $ 43 ​ $ 1,278 ​ $ 2,026,371 ​ $ 1,567 ​ $ 2,029,216 Commercial non-owner occupied ​ 3,591 ​ 2,110 ​ 96 ​ 5,797 ​ 6,709,993 ​ 19,909 ​ 6,735,699 Commercial owner occupied ​ 2,756 ​ ​ 1,732 ​ 626 ​ 5,114 ​ 4,950,470 ​ 14,532 ​ 4,970,116 Consumer owner occupied ​ ​ 4,046 ​ 533 ​ — ​ 4,579 ​ 3,615,602 ​ 18,183 ​ 3,638,364 Home equity loans ​ 2,565 ​ 913 ​ — ​ 3,478 ​ 1,158,861 ​ 6,255 ​ 1,168,594 Commercial and industrial ​ 50,451 ​ 26,639 ​ 3,991 ​ 81,081 ​ 3,672,611 ​ 7,441 ​ 3,761,133 Other income producing property ​ 879 ​ 424 ​ 106 ​ 1,409 ​ 691,320 ​ 4,075 ​ 696,804 Consumer ​ 2,672 ​ 840 ​ 1 ​ 3,513 ​ 897,688 ​ 3,456 ​ 904,657 Other loans ​ — ​ — ​ — ​ — ​ 23,583 ​ — ​ 23,583 ​ ​ $ 68,136 ​ $ 33,250 ​ $ 4,863 ​ $ 106,249 ​ $ 23,746,499 ​ $ 75,418 ​ $ 23,928,166 The following table is a summary of information pertaining to nonaccrual loans by class, including restructured loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ Greater than ​ Non-accrual ​ December 31, ​ ​ (Dollars in thousands) ​ 2022 ​ 90 Days Accruing (1) with no allowance (1) 2021 Construction and land development ​ $ 460 ​ $ 21 ​ $ 145 ​ $ 1,567 ​ ​ Commercial non-owner occupied ​ 21,314 ​ ​ — ​ 6,574 ​ 19,909 ​ ​ Commercial owner occupied real estate ​ 30,914 ​ ​ 294 ​ 15,578 ​ 14,532 ​ ​ Consumer owner occupied ​ 17,186 ​ ​ — ​ — ​ 18,183 ​ ​ Home equity loans ​ 6,322 ​ ​ — ​ 1,597 ​ 6,255 ​ ​ Commercial and industrial ​ 13,839 ​ ​ 3,211 ​ 5,796 ​ 7,441 ​ ​ Other income producing property ​ 2,462 ​ ​ 262 ​ — ​ 4,075 ​ ​ Consumer ​ 3,743 ​ ​ — ​ — ​ 3,456 ​ ​ Total loans on nonaccrual status ​ $ 96,240 ​ $ 3,788 ​ $ 29,690 ​ $ 75,418 ​ ​ (1) Greater than 90 days accruing and non-accrual with no allowance loans at September 30, 2022. There is no interest income recognized during the period on nonaccrual loans. The Company follows its nonaccrual policy by reversing contractual interest income in the income statement when the Company places a loan on nonaccrual status. Loans on nonaccrual status in which there is no allowance assigned are individually evaluated loans that do not carry a specific reserve. See Note 2 — Summary of Significant Accounting Policies for further detailed on individually evaluated loans. The following is a summary of collateral dependent loans, by type of collateral, and the extent to which they are collateralized during the period: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ Collateral ​ ​ December 31, ​ Collateral ​ ​ (Dollars in thousands) ​ 2022 Coverage % ​ 2021 Coverage % ​ Commercial owner occupied real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Church ​ $ — ​ $ — ​ ​ $ 1,953 ​ $ 2,308 118% ​ Other ​ ​ 15,578 ​ ​ 23,135 149% ​ ​ 4,656 ​ ​ 12,200 262% ​ Commercial non-owner occupied real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Hotel ​ ​ — ​ ​ — ​ ​ ​ 1,822 ​ ​ 4,100 225% ​ Other ​ ​ 6,574 ​ ​ 10,900 166% ​ ​ 6,949 ​ ​ 9,630 139% ​ Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other ​ ​ 5,163 ​ ​ 5,446 105% ​ ​ — ​ ​ — ​ ​ Home equity loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential 1-4 family dwelling ​ ​ 1,552 ​ ​ 1,671 108% ​ ​ — ​ ​ — ​ ​ Total collateral dependent loans ​ $ 28,867 ​ $ 41,152 ​ ​ $ 15,380 ​ $ 28,238 ​ ​ ​ The Bank designates individually evaluated loans (excluding TDRs) on non-accrual with a net book balance exceeding the designated threshold as collateral dependent loans. Collateral dependent loans are loans for which the repayment is expected to be provided substantially through the operation or sale of the collateral and the borrower is experiencing financial difficulty. These loans do not share common risk characteristics and are not included within the collectively evaluated loans for determining ACL. Under ASC 326-20-35-6, the Bank has adopted the collateral maintenance practical expedient to measure the ACL based on the fair value of collateral. The ACL is calculated on an individual loan basis based on the shortfall between the fair value of the loan's collateral, which is adjusted for selling costs, and amortized cost. The significant changes above in collateral percentage are due to appraisal value updates or changes in the number of loans within the asset class and collateral type. Overall collateral dependent loans increased ​ In the course of resolving delinquent loans, the Bank may choose to restructure the contractual terms of certain loans. Any loans that are modified are reviewed by the Bank to determine if a TDR, sometimes referred to herein as a restructured loan, has occurred. The Bank designates loan modifications as TDRs when it grants a concession to a borrower that it would not otherwise consider due to the borrower experiencing financial difficulty (FASB ASC Topic 310-40). The concessions granted on TDRs generally include terms to reduce the interest rate, extend the term of the debt obligation, or modify the payment structure on the debt obligation. See Note 2 — Summary of Significant Accounting Policies for how such modifications are factored into the determination of the ACL. ​ Loans on nonaccrual status at the date of modification are initially classified as nonaccrual TDRs. Loans on accruing status at the date of concession are initially classified as accruing TDRs if the note is reasonably assured of repayment and performance is expected in accordance with its modified terms. Such loans may be designated as nonaccrual loans subsequent to the concession date if reasonable doubt exists as to the collection of interest or principal under the restructuring agreement. Nonaccrual TDRs are returned to accruing status when there is economic substance to the restructuring, there is documented credit evaluation of the borrower’s financial condition, the remaining balance is reasonably assured of repayment in accordance with its modified terms, and the borrower has demonstrated sustained repayment performance in accordance with the modified terms for a reasonable period of time (generally a minimum of six months). ​ The Company elected the accounting policy in the CARES Act to not apply TDR accounting to loans modified for borrowers impacted by the COVID-19 pandemic if the concession met the criteria stipulated in the CARES Act. Details in regard to the Company’s implemented loan modification programs in response to the COVID-19 pandemic under the CARES Act is disclosed under the Note 2 – Summary of Significant Accounting Policies. ​ The following tables present loans designated as TDRs segregated by class and type of concession that were restructured during the three months ended September 30, 2022 and during the 30, 2022 and 2021. There were ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ ​ 2022 ​ 2021 ​ ​ ​ ​ Pre-Modification ​ Post-Modification ​ ​ ​ Pre-Modification ​ Post-Modification ​ ​ Number ​ Amortized ​ Amortized ​ Number ​ Amortized ​ Amortized (Dollars in thousands) ​ of loans ​ Cost ​ Cost ​ of loans ​ Cost ​ Cost Interest rate modification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial non-owner occupied ​ 2 ​ $ 2,321 ​ $ 2,321 ​ — ​ $ — ​ $ — Commercial owner occupied ​ 2 ​ ​ 2,629 ​ ​ 2,629 ​ — ​ ​ — ​ ​ — Commercial and industrial ​ 1 ​ ​ 535 ​ ​ 535 ​ — ​ ​ — ​ ​ — Total interest rate modifications ​ 5 ​ $ 5,485 ​ $ 5,485 ​ — ​ $ — ​ $ — Term modification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial non-owner occupied ​ 1 ​ $ 375 ​ $ 375 ​ — ​ $ — ​ $ — Commercial owner occupied ​ 2 ​ ​ 1,042 ​ ​ 1,042 ​ — ​ ​ — ​ ​ — Commercial and industrial ​ 3 ​ ​ 3,097 ​ ​ 3,097 ​ — ​ ​ — ​ ​ — Total term modifications ​ 6 ​ ​ 4,514 ​ ​ 4,514 ​ — ​ ​ — ​ ​ — ​ ​ 11 ​ $ 9,999 ​ $ 9,999 ​ —

Allowance for Credit Losses (AC

Allowance for Credit Losses (ACL)	9 Months Ended
	Sep. 30, 2022
Allowance for Credit Losses (ACL)
Allowance for Credit Losses (ACL)	​ Note 7 — Allowance for Credit Losses (ACL) See Note 2 - Summary of Significant Accounting Policies in this Quarterly Report on Form 10-Q for further detailed descriptions of our estimation process and methodology related to the allowance for credit losses. The following tables present a disaggregated analysis of activity in the allowance for credit losses. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Residential ​ ​ ​ Residential ​ Other ​ ​ ​ ​ ​ ​ ​ CRE Owner ​ Non-Owner ​ ​ ​ ​ ​ (Dollars in thousands) ​ Mortgage Sr. ​ Mortgage Jr. ​ HELOC ​ Construction ​ C&D ​ Consumer ​ Multifamily ​ Municipal ​ Occupied ​ Occupied CRE ​ C & I ​ Total Three Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at end of period June 30, 2022 ​ $ 55,707 ​ $ 533 ​ $ 16,918 ​ $ 7,565 ​ $ 27,730 ​ $ 24,752 ​ $ 2,458 ​ $ 703 ​ $ 64,688 ​ $ 85,169 ​ $ 33,485 ​ $ 319,708 Charge-offs ​ (50) ​ — ​ (23) ​ — ​ — ​ (2,742) ​ — ​ — ​ (1,353) ​ ​ (8) ​ ​ (2,950) ​ (7,126) Recoveries ​ 376 ​ 30 ​ 3,151 ​ 2 ​ 280 ​ 573 ​ — ​ — ​ 569 ​ ​ 29 ​ ​ 3,378 ​ 8,388 Net (charge offs) recoveries ​ ​ 326 ​ 30 ​ 3,128 ​ 2 ​ 280 ​ (2,169) ​ — ​ — ​ (784) ​ ​ 21 ​ ​ 428 ​ ​ 1,262 (Recovery) provision (1) ​ 11,987 ​ (40) ​ (3,980) ​ 763 ​ 3,798 ​ 4,221 ​ 666 ​ (1) ​ (9,745) ​ ​ (8,937) ​ ​ 4,696 ​ 3,428 Balance at end of period September 30, 2022 ​ $ 68,020 ​ $ 523 ​ $ 16,066 ​ $ 8,330 ​ $ 31,808 ​ $ 26,804 ​ $ 3,124 ​ $ 702 ​ $ 54,159 ​ $ 76,253 ​ $ 38,609 ​ $ 324,398 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative allowance ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Collectively evaluated ​ $ 67,765 ​ $ 523 ​ $ 13,402 ​ $ 8,330 ​ $ 31,524 ​ $ 26,804 ​ $ 3,124 ​ $ 702 ​ $ 46,443 ​ $ 74,978 ​ $ 35,650 ​ $ 309,245 Individually evaluated ​ ​ 233 ​ ​ — ​ ​ 2,654 ​ ​ — ​ ​ 284 ​ ​ — ​ ​ — ​ ​ — ​ ​ 7,102 ​ ​ 765 ​ ​ 2,240 ​ ​ 13,278 Total quantitative allowance ​ ​ 67,998 ​ ​ 523 ​ ​ 16,056 ​ ​ 8,330 ​ ​ 31,808 ​ ​ 26,804 ​ ​ 3,124 ​ ​ 702 ​ ​ 53,545 ​ ​ 75,743 ​ ​ 37,890 ​ ​ 322,523 Qualitative allowance ​ ​ 22 ​ ​ — ​ ​ 10 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 614 ​ ​ 510 ​ ​ 719 ​ ​ 1,875 Balance at end of period September 30, 2022 ​ $ 68,020 ​ $ 523 ​ $ 16,066 ​ $ 8,330 ​ $ 31,808 ​ $ 26,804 ​ $ 3,124 ​ $ 702 ​ $ 54,159 ​ $ 76,253 ​ $ 38,609 ​ $ 324,398 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at end of period June 30, 2021 ​ $ 55,820 ​ $ 825 ​ $ 14,550 ​ $ 4,488 ​ $ 45,488 ​ $ 25,697 ​ $ 5,883 ​ $ 1,063 ​ $ 75,492 ​ $ 90,404 ​ $ 30,691 ​ $ 350,401 Charge-offs ​ (15) ​ — ​ (149) ​ — ​ — ​ (2,366) ​ — ​ — ​ (4) ​ ​ (241) ​ ​ (1,072) ​ (3,847) Recoveries ​ 332 ​ 48 ​ 720 ​ 2 ​ 748 ​ 577 ​ — ​ — ​ 332 ​ ​ 173 ​ ​ 869 ​ 3,801 Net (charge offs) recoveries ​ ​ 317 ​ ​ 48 ​ ​ 571 ​ ​ 2 ​ ​ 748 ​ ​ (1,789) ​ ​ — ​ ​ — ​ ​ 328 ​ ​ (68) ​ ​ (203) ​ ​ (46) Provision (recovery) (1) ​ (4,587) ​ (174) ​ (204) ​ 295 ​ (10,337) ​ 332 ​ (1,299) ​ (554) ​ (10,611) ​ ​ (7,458) ​ ​ (1,614) ​ (36,211) Balance at end of period September 30, 2021 ​ $ 51,550 ​ $ 699 ​ $ 14,917 ​ $ 4,785 ​ $ 35,899 ​ $ 24,240 ​ $ 4,584 ​ $ 509 ​ $ 65,209 ​ $ 82,878 ​ $ 28,874 ​ $ 314,144 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative allowance ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Collectively evaluated ​ $ 48,411 ​ $ 699 ​ $ 13,307 ​ $ 4,756 ​ $ 35,893 ​ $ 21,509 ​ $ 4,584 ​ $ 509 ​ $ 62,969 ​ $ 79,302 ​ $ 25,789 ​ $ 297,728 Individually evaluated ​ ​ 77 ​ ​ — ​ ​ 959 ​ ​ — ​ ​ 6 ​ ​ — ​ ​ — ​ ​ — ​ ​ 377 ​ ​ — ​ ​ 307 ​ ​ 1,726 Total quantitative allowance ​ ​ 48,488 ​ ​ 699 ​ ​ 14,266 ​ ​ 4,756 ​ ​ 35,899 ​ ​ 21,509 ​ ​ 4,584 ​ ​ 509 ​ ​ 63,346 ​ ​ 79,302 ​ ​ 26,096 ​ ​ 299,454 Qualitative allowance ​ ​ 3,062 ​ ​ — ​ ​ 651 ​ ​ 29 ​ ​ — ​ ​ 2,731 ​ ​ — ​ ​ — ​ ​ 1,863 ​ ​ 3,576 ​ ​ 2,778 ​ ​ 14,690 Balance at end of period September 30, 2021 ​ $ 51,550 ​ $ 699 ​ $ 14,917 ​ $ 4,785 ​ $ 35,899 ​ $ 24,240 ​ $ 4,584 ​ $ 509 ​ $ 65,209 ​ $ 82,878 ​ $ 28,874 ​ $ 314,144 (1) A provision for credit losses of $20.0 million was recorded during the third quarter of 2022, compared to a negative provision (recovery) for credit losses of $(2.7) million recorded during the third quarter of 2021 for the allowance for credit losses for unfunded commitments that is not included in the above table. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Residential ​ ​ ​ Residential ​ Other ​ ​ ​ ​ ​ ​ ​ CRE Owner ​ Non Owner ​ ​ ​ ​ ​ (Dollars in thousands) ​ Mortgage Sr. ​ Mortgage Jr. ​ HELOC ​ Construction ​ C&D ​ Consumer ​ Multifamily ​ Municipal ​ Occupied ​ Occupied CRE ​ C & I ​ Total Nine Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at end of period December 31, 2021 ​ $ 47,036 ​ $ 611 ​ $ 13,325 ​ $ 4,997 ​ $ 37,593 ​ $ 23,149 ​ $ 4,921 ​ $ 565 ​ $ 61,794 ​ $ 79,649 ​ $ 28,167 ​ $ 301,807 Initial Allowance for PCD loans acquired during period ​ ​ 811 ​ ​ — ​ ​ — ​ ​ — ​ ​ 86 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,409 ​ ​ — ​ ​ 10,452 ​ ​ 13,758 Initial Allowance for Non PCD loans acquired during period ​ ​ 352 ​ ​ 26 ​ ​ 132 ​ ​ 2 ​ ​ 1,887 ​ ​ 51 ​ ​ 426 ​ ​ — ​ ​ 2,519 ​ ​ 2,697 ​ ​ 5,605 ​ ​ 13,697 Charge-offs ​ (169) ​ (19) ​ (444) ​ — ​ (4) ​ (7,527) ​ — ​ — ​ (1,802) ​ ​ (368) ​ ​ (8,446) ​ (18,779) Recoveries ​ 1,131 ​ 195 ​ 3,803 ​ 7 ​ 924 ​ 1,765 ​ — ​ — ​ 977 ​ ​ 402 ​ ​ 6,175 ​ 15,379 Net recoveries (charge offs) ​ ​ 962 ​ ​ 176 ​ ​ 3,359 ​ ​ 7 ​ ​ 920 ​ ​ (5,762) ​ ​ — ​ ​ — ​ ​ (825) ​ ​ 34 ​ ​ (2,271) ​ ​ (3,400) Provision (benefit) (1) ​ 18,859 ​ (290) ​ (750) ​ 3,324 ​ (8,678) ​ 9,366 ​ (2,223) ​ 137 ​ (11,738) ​ ​ (6,127) ​ ​ (3,344) ​ (1,464) Balance at end of period September 30, 2022 ​ $ 68,020 ​ $ 523 ​ $ 16,066 ​ $ 8,330 ​ $ 31,808 ​ $ 26,804 ​ $ 3,124 ​ $ 702 ​ $ 54,159 ​ $ 76,253 ​ $ 38,609 ​ $ 324,398 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at end of period December 31, 2020 ​ $ 63,561 ​ $ 1,238 ​ $ 16,698 ​ $ 4,914 ​ $ 67,197 ​ $ 26,562 ​ $ 7,887 ​ $ 1,510 ​ $ 97,104 ​ $ 124,421 ​ $ 46,217 ​ $ 457,309 Charge-offs ​ (204) ​ — ​ (835) ​ — ​ (87) ​ (6,001) ​ — ​ — ​ (2,052) ​ ​ (776) ​ ​ (2,928) ​ (12,883) Recoveries ​ 1,103 ​ 131 ​ 1,903 ​ 3 ​ 1,178 ​ 1,618 ​ 3 ​ — ​ 796 ​ ​ 905 ​ ​ 3,104 ​ 10,744 Net charge offs ​ ​ 899 ​ ​ 131 ​ ​ 1,068 ​ ​ 3 ​ ​ 1,091 ​ ​ (4,383) ​ ​ 3 ​ ​ — ​ ​ (1,256) ​ ​ 129 ​ ​ 176 ​ ​ (2,139) Provision (benefit) (1) ​ (12,910) ​ (670) ​ (2,849) ​ (132) ​ (32,389) ​ 2,061 ​ (3,306) ​ (1,001) ​ (30,639) ​ ​ (41,672) ​ ​ (17,519) ​ (141,026) Balance at end of period September 30, 2021 ​ $ 51,550 ​ $ 699 ​ $ 14,917 ​ $ 4,785 ​ $ 35,899 ​ $ 24,240 ​ $ 4,584 ​ $ 509 ​ $ 65,209 ​ $ 82,878 ​ $ 28,874 ​ $ 314,144 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (1) A provision for credit losses of $22.5 million was recorded during the first nine months of 2022, compared to a negative provision (recovery) for credit losses of $(15.1) million during the first nine months of 2021 for the allowance for credit losses for unfunded commitments that is not included in the above table .

Other Real Estate Owned and Ban

Other Real Estate Owned and Bank Premises Held for Sale	9 Months Ended
	Sep. 30, 2022
Other Real Estate Owned and Bank Premises Held for Sale
Other Real Estate Owned and Bank Premises Held for Sale	Note 8 — Other Real Estate Owned and Bank Premises Held for Sale ​ The following is a summary of information pertaining to OREO and Bank Premises Held for Sale: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Dollars in thousands) ​ OREO ​ Bank Premises Held For Sale ​ Total Balance, December 31, 2021 $ 2,736 ​ $ 9,578 ​ $ 12,314 Additions, net ​ ​ 1,889 ​ ​ 21,003 ​ ​ 22,892 Write-downs ​ ​ (115) ​ ​ (111) ​ ​ (226) Sold ​ ​ (2,350) ​ ​ (5,427) ​ ​ (7,777) Balance, September 30, 2022 ​ $ 2,160 ​ $ 25,043 ​ $ 27,203 ​ At September 30, 2022, there were a total of 12 properties included in OREO 31, 2021. At September 30, 2022, there were a total of 31, 2021. At September 30, 2022, we had

Leases

Leases	9 Months Ended
	Sep. 30, 2022
Leases
Leases	Note 9 — Leases ​ As of September 30, 2022 and December 31, 2021, we had operating right-of-use (“ROU”) assets of $113.4 million and $110.3 million, respectively, and operating lease liabilities of $121.1 million and $115.9 million, respectively. We maintain operating leases on land and buildings for our operating centers, branch facilities and ATM locations. Most leases include one or more . The exercise of renewal options is based on the sole judgment of management and what they consider to be reasonably certain given the environment today. Factors in determining whether an option is reasonably certain of exercise include, but are not limited to, the value of leasehold improvements, the value of renewal rate compared to market rates, and the presence of factors that would cause a significant economic penalty to us if the option is not exercised. Leases with an initial term of 12 months or less are not recorded on the balance sheet and instead are recognized in lease expense on a straight-line basis over the lease term. ​ The Company also holds a small number of finance leases assumed in connection to the CenterState Bank Corporation (“CenterState”) merger. These leases are all real estate leases. Terms and conditions are similar to those real estate operating leases described above. Lease classifications from the acquired institutions were retained. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ (Dollars in thousands) ​ September 30, ​ September 30, ​ 2022 2021 2022 2021 Lease Cost Components: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortization of ROU assets - finance leases ​ $ 117 ​ $ 117 ​ $ 350 ​ $ 350 ​ Interest on lease liabilities - finance leases ​ ​ 12 ​ ​ 14 ​ ​ 37 ​ ​ 43 ​ Operating lease cost (cost resulting from lease payments) ​ ​ 4,550 ​ ​ 4,292 ​ ​ 13,419 ​ ​ 12,977 ​ Short-term lease cost ​ ​ 218 ​ ​ 116 ​ ​ 592 ​ ​ 327 ​ Variable lease cost (cost excluded from lease payments) ​ 615 ​ 783 ​ 1,813 ​ 2,073 ​ Total lease cost ​ $ 5,512 ​ $ 5,322 ​ $ 16,211 ​ $ 15,770 ​ Supplemental Cash Flow and Other Information Related to Leases: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Finance lease - operating cash flows ​ $ 12 ​ $ 14 ​ $ 37 ​ $ 43 ​ Finance lease - financing cash flows ​ ​ 109 ​ ​ 107 ​ ​ 325 ​ ​ 320 ​ Operating lease - operating cash flows (fixed payments) ​ ​ 4,356 ​ ​ 4,127 ​ ​ 12,982 ​ ​ 12,440 ​ Operating lease - operating cash flows (net change asset/liability) ​ ​ (3,466) ​ ​ (3,215) ​ ​ (10,313) ​ ​ (9,691) ​ New ROU assets - operating leases ​ ​ — ​ ​ 4,196 ​ ​ 12,616 ​ ​ 5,494 ​ New ROU assets - finance leases ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ Weighted - average remaining lease term (years) - finance leases ​ ​ ​ ​ ​ ​ ​ ​ 5.67 ​ ​ 6.66 ​ Weighted - average remaining lease term (years) - operating leases ​ ​ ​ ​ ​ ​ ​ 10.13 ​ 10.96 ​ Weighted - average discount rate - finance leases ​ ​ ​ ​ ​ ​ ​ ​ 1.7% ​ ​ 1.7% ​ Weighted - average discount rate - operating leases ​ ​ ​ ​ ​ 3.0% ​ 3.3% ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating lease payments due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2022 (excluding the nine months ended September 30, 2022) ​ ​ ​ ​ ​ ​ ​ $ 4,303 ​ ​ ​ ​ 2023 ​ ​ ​ ​ ​ ​ ​ ​ 16,727 ​ ​ ​ ​ 2024 ​ ​ ​ ​ ​ ​ ​ ​ 15,343 ​ ​ ​ ​ 2025 ​ ​ ​ ​ ​ ​ ​ ​ 13,902 ​ ​ ​ ​ 2026 ​ ​ ​ ​ ​ ​ ​ ​ 13,246 ​ ​ ​ ​ Thereafter ​ ​ ​ ​ ​ ​ ​ ​ 79,764 ​ ​ ​ ​ Total undiscounted cash flows ​ ​ ​ ​ ​ ​ ​ ​ 143,285 ​ ​ ​ ​ Discount on cash flows ​ ​ ​ ​ ​ ​ ​ ​ (22,174) ​ ​ ​ ​ Total operating lease liabilities ​ ​ ​ ​ ​ ​ ​ $ 121,111 ​ ​ ​ ​ ​ As of September 30, 2022, we determined that the number and dollar amount of our equipment leases was immaterial. As of September 30, 2022, we have

Deposits

Deposits	9 Months Ended
	Sep. 30, 2022
Deposits
Deposits	Note 10 — Deposits ​ Our total deposits are comprised of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ (Dollars in thousands) 2022 2021 Non-interest bearing checking ​ $ 13,660,244 ​ $ 11,498,840 ​ Interest-bearing checking ​ 8,741,447 ​ 9,018,987 ​ Savings ​ 3,602,560 ​ 3,350,547 ​ Money market ​ 9,126,058 ​ 8,376,380 ​ Time deposits ​ ​ 2,535,712 ​ ​ 2,810,075 ​ Total deposits ​ $ 37,666,021 ​ $ 35,054,829 ​ ​ At September 30, 2022 and December 31, 2021, we had $505.8 million and $603.2 million in certificates of deposits of $250,000 and greater, respectively. At September 30, 2022 and December 31, 2021, the Company held

Retirement Plans

Retirement Plans	9 Months Ended
	Sep. 30, 2022
Retirement Plans
Retirement Plans	Note 11 — Retirement Plans ​ The Company sponsors an employees’ savings plan under the provisions of the Internal Revenue Code Section 401(k). Electing employees are eligible to participate in the employees’ savings plan after attaining age 21 . Plan participants elect to contribute portions of their annual base compensation as a before tax contribution. Employer contributions may be made from current or accumulated net profits. Participants may elect to contribute of annual base compensation as a before tax contribution. Employees participating in the plan received a their 401(k) plan contribution from the Company, up to 4% of their salary. The employees were also eligible for an additional discretionary matching contribution contingent upon certain of our annual financial goals which would be paid in the first quarter of the following year. Based on our financial performance in 2021, we did not pay a discretionary matching contribution in the first quarter of 2022. Currently, we expect the same terms in the employees’ savings plan for 2022. As a result of the recent Atlantic Capital acquisition, all former Atlantic Capital employees became eligible to participate in the Company’s 401(k) plan as of legal close in March 2022. We expensed ​ Employees can enter the savings plan on or after the first day of each month. The employee may enter into a salary deferral agreement at any time to select an alternative deferral amount or to elect not to defer in the plan. If the employee does not elect an investment allocation, the plan administrator will select a retirement-based portfolio according to the employee’s number of years until normal retirement age. The plan’s investment valuations are generally provided on a daily basis.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2022
Earnings Per Share
Earnings Per Share	Note 12 — Earnings Per Share ​ Basic earnings per share is calculated by dividing net income by the weighted-average shares of common stock outstanding during each period, excluding non-vested restricted shares. Our diluted earnings per share is based on the weighted-average shares of common stock outstanding during each period plus the maximum dilutive effect of common stock issuable upon exercise of stock options or vesting of restricted stock units. Stock options and unvested restricted stock units are considered common stock equivalents and are only included in the calculation of diluted earnings per common share when their effect is dilutive. ​ The following table sets forth the computation of basic and diluted earnings per common share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ ​ September 30, ​ September 30, ​ (Dollars and shares in thousands, except for per share amounts) 2022 2021 2022 2021 Basic earnings per common share: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income ​ $ 133,043 ​ $ 122,788 ​ $ 352,547 ​ $ 368,697 ​ Weighted-average basic common shares ​ ​ 75,606 ​ ​ 70,066 ​ ​ 74,185 ​ ​ 70,643 ​ Basic earnings per common share ​ $ 1.76 ​ $ 1.75 ​ $ 4.75 ​ $ 5.22 ​ Diluted earnings per common share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income ​ $ 133,043 ​ $ 122,788 ​ $ 352,547 ​ $ 368,697 ​ Weighted-average basic common shares ​ ​ 75,606 ​ ​ 70,066 ​ ​ 74,185 ​ ​ 70,643 ​ Effect of dilutive securities ​ ​ 576 ​ ​ 510 ​ ​ 606 ​ ​ 465 ​ Weighted-average dilutive shares ​ ​ 76,182 ​ ​ 70,576 ​ ​ 74,791 ​ ​ 71,108 ​ Diluted earnings per common share ​ $ 1.75 ​ $ 1.74 ​ $ 4.71 ​ $ 5.19 ​ ​ The calculation of diluted earnings per common share excludes outstanding stock options for which the results would have been anti-dilutive under the treasury stock method as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ (Dollars in thousands) 2022 2021 2022 2021 Number of shares ​ ​ ​ ​ ​ 57,169 ​ ​ ​ ​ ​ 57,169 ​ ​ ​ ​ 57,169 ​ ​ ​ ​ ​ 60,546 ​ Range of exercise prices ​ $ 87.30 to $ 91.35 ​ $ 87.30 to $ 91.35 ​ $ 87.30 to $ 91.35 ​ $ 87.30 to $ 91.35 ​ ​

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2022
Share-Based Compensation
Share-Based Compensation	Note 13 — Share-Based Compensation ​ Our 2004, 2012, 2019 and 2020 share-based compensation plans are long-term retention plans intended to attract, retain, and provide incentives for key employees and non-employee directors in the form of incentive and non-qualified stock options, restricted stock, and restricted stock units (“RSUs”). Our 2020 plan was adopted by our shareholders at our annual meeting on October 29, 2020. The Company also assumed the obligations of Atlantic Capital under various equity incentive plans pursuant to the acquisition of Atlantic Capital on March 1, 2022. ​ Stock Options ​ With the exception of non-qualified stock options granted to directors under the 2004 and 2012 plans, which in some cases may be exercised at any time prior to expiration and in other cases may be exercised at intervals less than a year following the grant date, incentive stock options granted under our 2004, 2012, 2019 and 2020 plans may not be exercised in whole or in part within a year following the date of the grant, as these incentive stock options become exercisable in 25% increments pro ratably over the four-year period following the grant date. The options are granted at an exercise price at least equal to the fair value of the common stock at the date of grant and expire from the date of grant. 2004 2012 or 2019 plans after January 26, 2012, February 1, 2019, and October 29, 2020, respectively, and the plans are closed other than for any options still unexercised and outstanding. The 2020 plan is the only plan from which new share-based compensation grants may be issued. It is the Company’s policy to grant options out of the shares registered under the 2020 plan. Activity in the Company’s stock option plans is summarized in the following table. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ ​ ​ ​ ​ ​ ​ Weighted ​ Average ​ Aggregate ​ ​ ​ ​ ​ Average ​ Remaining ​ Intrinsic ​ ​ Shares Price (Yrs.) (000's) Outstanding at January 1, 2022 ​ 185,125 ​ $ 63.03 ​ ​ ​ ​ ​ ​ Assumed stock options and warrants from ACBI merger ​ 23,410 ​ ​ 40.73 ​ ​ ​ ​ ​ ​ Exercised ​ (37,236) ​ 40.78 ​ ​ ​ ​ ​ Expired ​ (2,638) ​ ​ 40.29 ​ ​ ​ ​ ​ Outstanding at September 30, 2022 ​ 168,661 ​ 65.20 ​ 3.31 ​ $ 3,033 ​ Exercisable at September 30, 2022 ​ 168,661 ​ ​ 65.20 ​ 3.31 ​ $ 3,033 ​ ​ The fair value of options is estimated at the date of grant using the Black-Scholes option pricing model and expensed over the options’ vesting periods. There have been stock options issued during the first nine months of 2022. Because all outstanding stock options had vested as of December 31, 2021, there was no unrecognized compensation cost related to nonvested stock option grants 30, 2022. The intrinsic value of stock option shares exercised for the nine months ended September 30, 2022 was ​ Restricted Stock ​ We, from time-to-time, grant shares of restricted stock to key employees and non-employee directors. These awards help align the interests of these employees and directors with the interests of our shareholders by providing economic value directly related to increases in the value of our stock. The value of the stock awarded is established as the fair market value of the stock at the time of the grant. We recognize expenses, equal to the total value of such awards, ratably over the vesting period of the stock grants. Restricted stock grants to employees typically “cliff vest” after . ​ All restricted stock agreements are conditioned upon continued employment. Termination of employment prior to a vesting date, as described below, would terminate any interest in non-vested shares. Prior to vesting of the shares, as long as employed by the Company, the key employees and non-employee directors will have the right to vote such shares and to receive dividends paid with respect to such shares. All restricted shares will fully vest in the event of change in control of the Company or upon the death of the recipient. ​ Nonvested restricted stock for 2022 is summarized in the following table. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted- ​ ​ ​ ​ Average ​ ​ ​ ​ Grant-Date Restricted Stock ​ Shares ​ Fair Value Nonvested at January 1, 2022 3,066 ​ $ 67.31 ​ Assumed restricted stock shares from ACBI merger ​ 84,224 ​ ​ 90.00 ​ Vested (29,220) ​ 89.91 ​ Forfeited (2,816) ​ 90.00 ​ Nonvested at September 30, 2022 55,254 ​ $ 88.79 ​ ​ As of September 30, 2022, there was $3.4 million of total unrecognized compensation cost related to nonvested restricted stock granted under the plans. This cost is expected to be recognized over a weighted-average period of 30, 2022. The total fair value of shares vested during the nine months ended September 30, 2022 was ​ Restricted Stock Units (“RSUs”) ​ We, from time-to-time, also grant performance RSUs and time-vested RSUs to key employees, and time-vested RSUs and non-employee directors. These awards help align the interests of these employees with the interests of our shareholders by providing economic value directly related to our performance. Some performance RSU grants contain a one two from the grant date). Grants to non-employee directors typically vest within a period. We communicate threshold, target, and maximum performance RSU awards and performance targets to the applicable key employees at the beginning of a performance period. Due to the merger with CenterState, all legacy and assumed performance based restricted stock units converted to a time-vesting requirement. With respect to some long-term incentive awards, dividend equivalents are accrued at the same rate as cash dividends paid for each share of the Company’s common stock during the performance or time-vested period, and subsequently paid when the shares are issued on the vesting or settlement date. The value of the RSUs awarded is established as the fair market value of the stock at the time of the grant. We recognize expenses on a straight-line basis typically over the performance and vesting/or time-vesting periods based upon the probable performance target, as applicable, that will be met. Outstanding RSUs at target for the nine months ended September 30, 2022 is summarized in the following table. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted- ​ ​ ​ ​ Average ​ ​ ​ ​ Grant-Date Restricted Stock Units ​ Shares ​ Fair Value Outstanding at January 1, 2022 948,213 ​ $ 67.01 ​ Assumed restricted stock units from ACBI merger ​ 55,736 ​ ​ 87.94 ​ Granted 333,116 ​ 82.34 ​ Vested ​ (383,352) ​ ​ 66.25 ​ Forfeited ​ (7,287) ​ ​ 84.07 ​ Outstanding at September 30, 2022 946,426 ​ $ 73.81 ​ ​ The nonvested shares of 946,426 at September 30, 2022 includes 54,687 shares that have fully vested but are subject to a two-year holding period, which commenced at the end of their respective vesting period. These vested shares will be released and issued into shares of common stock at the end of their respective two-year holding period, the last of which will end by March 31, 2024. If maximum performance is achieved pursuant to the 2021 and 2022 LTI performance-based RSU grants, an additional As of September 30, 2022, there was $33.6 million of total unrecognized compensation cost related to nonvested RSUs granted under the plan. This cost is expected to be recognized over a weighted-average period of 30, 2022. The total fair value of RSUs vested and released during the nine months ended September 30, 2022 was million.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2022
Commitments and Contingent Liabilities
Commitments and Contingent Liabilities	Note 14 — Commitments and Contingent Liabilities ​ In the normal course of business, we make various commitments and incur certain contingent liabilities, which are not reflected in the accompanying financial statements. The commitments and contingent liabilities include guarantees, commitments to extend credit, and standby letters of credit. At September 30, 2022, commitments to extend credit and standby letters of credit totaled billion. million and recorded on the Balance Sheet. ​ We have been named as defendant in various legal actions, arising from its normal business activities, in which damages in various amounts are claimed. We are also exposed to litigation risk related to the prior business activities of banks acquired through whole bank acquisitions. Although the amount of any ultimate liability with respect to such matters cannot be determined, in the opinion of Management, as of ​

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2022
Fair Value.
Fair Value	Note 15 — Fair Value ​ FASB ASC 820, Fair Value Measurements and Disclosures, defines fair value, establishes a framework for measuring fair value under accounting principles generally accepted in the United States, and enhances disclosures about fair value measurements. FASB ASC 820 clarifies that fair value should be based on the assumptions market participants would use when pricing an asset or liability and establishes a fair value hierarchy that prioritizes the information used to develop those assumptions. ​ The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Available for sale and trading securities, derivative contracts, mortgage loans held for sale, SBA servicing rights, and mortgage servicing rights (“MSRs”) are recorded at fair value on a recurring basis. Additionally, from time to time, we may be required to record at fair value other assets on a nonrecurring basis, such as impaired loans, OREO, bank properties held for sale, and certain other assets. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or write-downs of individual assets. ​ FASB ASC Topic 820 establishes a three-tier fair value hierarchy which prioritizes the inputs used in measuring fair value as follows: ​ Level 1 Observable inputs such as quoted prices in active markets; Level 2 Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and Level 3 Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions. ​ The following is a description of valuation methodologies used for assets recorded at fair value. ​ Trading Securities ​ The fair values of trading securities are determined as follows: (1) for those securities that have traded prior to the date of the consolidated balance sheet but have not settled (date of sale) until after such date, the sales price is used as the fair value; and, (2) for those securities which have not traded as of the date of the consolidated balance sheet, the fair value was determined by broker price indications of similar or same securities. ​ Investment Securities ​ Securities available for sale are valued on a recurring basis at quoted market prices where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable securities. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange and The NASDAQ Stock Market. Level 2 securities include mortgage-backed securities and debentures issued by government agencies or sponsored entities, municipal bonds and corporate debt securities, or U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Securities held to maturity are valued at quoted market prices or dealer quotes similar to securities available for sale. The carrying value of FHLB and FRB stock approximates fair value based on the redemption provisions. ​ Mortgage Loans Held for Sale ​ Mortgage loans held for sale are carried at fair value with changes in fair value recognized in current period earnings. The fair values of mortgage loans held for sale are based on commitments on hand from investors within the secondary market for loans with similar characteristics. As such, the fair value adjustments for mortgage loans held for sale are recurring Level 2. ​ Loans ​ We do not record loans at fair value on a recurring basis. However, from time to time, a loan may be individually evaluated for expected credit losses if it no longer shares similar risk characteristics with other pooled loans. Once a loan is identified as an individually evaluated loan, Management measures expected credit losses using estimated fair value methodologies. The fair value of the individually evaluated loans is estimated using one of several methods, including collateral value, market value of similar debt, enterprise value, liquidation value and discounted cash flows. Those individually evaluated loans not requiring an ACL represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. At September 30, 2022, approximately of the individually evaluated loans were evaluated based on the fair value of the collateral because such loans were considered collateral dependent. Individually evaluated loans, where an allowance is established based on the fair value of collateral; require classification in the fair value hierarchy. When the fair value of the collateral is based on an observable market price or a current appraised value, we consider the impaired loan as nonrecurring Level 2. When an appraised value is not available or Management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we consider the individually evaluated loan as nonrecurring Level 3. ​ Other Real Estate Owned (“OREO”) ​ OREO, consisting of properties obtained through foreclosure or in satisfaction of loans, is typically reported at fair value, determined on the basis of current appraisals, comparable sales, and other estimates of value obtained principally from independent sources, and adjusted for estimated selling costs (Level 2). However, OREO is considered Level 3 in the fair value hierarchy because Management has qualitatively applied a discount due to the size, supply of inventory, and the incremental discounts applied to the appraisals. Management also considers other factors, including changes in absorption rates, length of time the property has been on the market and anticipated sales values, which have resulted in adjustments to the collateral value estimates indicated in certain appraisals. At the time of foreclosure, any excess of the loan balance over the fair value of the real estate held as collateral is treated as a charge against the ACL. Gains or losses on sale and generally any subsequent adjustments to the value are recorded as a component of OREO Expense and Loan Related Expense in the Condensed Consolidated Statements of Income. ​ Bank Property Held for Sale ​ Bank property held for sale consists of locations that Management has identified as no longer needed and reclassified from bank premises. These properties are typically reported at fair value, determined on the basis of current appraisals, comparable sales, and other estimates of value obtained principally from independent sources, and adjusted for estimated selling costs (Level 2). However, bank property held for sale is considered Level 3 in the fair value hierarchy because Management has qualitatively applied a discount due to the size, supply of inventory, restrictions and the incremental discounts applied to the appraisals. Management also considers other factors, including changes in absorption rates, length of time the property has been on the market and anticipated sales values, which have resulted in adjustments to the collateral value estimates indicated in certain appraisals. At the time a property is identified as held for sale, any excess of the book balance over the fair value of the real estate is treated as a charge against earnings. Gains or losses on sale and generally any subsequent write-downs to the value are recorded as a component in Other Expense in the Condensed Consolidated Statements of Income. ​ Derivative Financial Instruments ​ Fair value is estimated using pricing models of derivatives with similar characteristics or discounted cash flow models where future floating cash flows are projected and discounted back; and accordingly, these derivatives are classified within Level 2 of the fair value hierarchy. (See Note 17 — Derivative Financial Instruments for additional information). ​ Mortgage Servicing Rights (“MSRs”) and SBA Servicing Asset ​ The estimated fair value of MSRs and SBA servicing assets are obtained through a third-party vendor analysis of future cash flows. For the SBA servicing assets, the Company began using the third-party vendor analysis of future cash flows to determine the fair value of the servicing asset during the second quarter of 2022. In prior periods, the SBA servicing asset was recorded at amortized cost. The evaluations for the servicing assets use assumptions market participants would use in determining fair value including market discount rates, prepayment speeds, servicing income, servicing costs, default rates and other market driven data, as well as the market’s perception of future interest rate movements. MSRs and SBA servicing assets are classified as Level 3. Assets and Liabilities Recorded at Fair Value on a Recurring Basis ​ The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ In Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs (Dollars in thousands) ​ Fair Value ​ (Level 1) ​ (Level 2) ​ (Level 3) September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative financial instruments ​ $ 1,083,803 ​ $ — ​ $ 1,083,803 ​ $ — Loans held for sale ​ 34,477 ​ — ​ 34,477 ​ — Trading securities ​ 51,940 ​ — ​ 51,940 ​ — Securities available for sale: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasuries ​ ​ 264,425 ​ ​ — ​ ​ 264,425 ​ ​ — U.S. Government agencies ​ ​ 218,623 ​ ​ — ​ ​ 218,623 ​ ​ — Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,730,067 ​ ​ — ​ ​ 1,730,067 ​ ​ — Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 627,812 ​ ​ — ​ ​ 627,812 ​ ​ — Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,027,776 ​ ​ — ​ ​ 1,027,776 ​ ​ — State and municipal obligations ​ 1,003,318 ​ — ​ 1,003,318 ​ — Small Business Administration loan-backed securities ​ 464,236 ​ — ​ 464,236 ​ — Corporate securities ​ ​ 33,353 ​ ​ — ​ ​ 33,353 ​ ​ — Total securities available for sale ​ 5,369,610 ​ — ​ 5,369,610 ​ — Mortgage servicing rights ​ 90,459 ​ — ​ — ​ 90,459 SBA servicing assets ​ ​ 6,981 ​ ​ — ​ ​ — ​ ​ 6,981 ​ ​ $ 6,637,270 ​ $ — ​ $ 6,539,830 ​ $ 97,440 Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative financial instruments ​ $ 1,082,948 ​ $ — ​ $ 1,082,948 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative financial instruments ​ $ 414,742 ​ $ — ​ $ 414,742 ​ $ — Loans held for sale ​ 191,723 ​ — ​ 191,723 ​ — Trading securities ​ 77,689 ​ — ​ 77,689 ​ — Securities available for sale: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ ​ 97,117 ​ ​ — ​ ​ 97,117 ​ ​ — Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,831,039 ​ ​ — ​ ​ 1,831,039 ​ ​ — Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 725,995 ​ ​ — ​ ​ 725,995 ​ ​ — Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,207,241 ​ ​ — ​ ​ 1,207,241 ​ ​ — State and municipal obligations ​ 812,689 ​ — ​ 812,689 ​ — Small Business Administration loan-backed securities ​ 500,663 ​ — ​ 500,663 ​ — Corporate securities ​ 18,734 ​ — ​ 18,734 ​ — Total securities available for sale ​ 5,193,478 ​ — ​ 5,193,478 ​ — Mortgage servicing rights ​ 65,620 ​ — ​ — ​ 65,620 ​ ​ $ 5,943,252 ​ $ — ​ $ 5,877,632 ​ $ 65,620 Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative financial instruments ​ $ 410,137 ​ $ — ​ $ 410,137 ​ $ — ​ Changes in Level 1, 2 and 3 Fair Value Measurements ​ When a determination is made to classify a financial instrument within Level 3 of the valuation hierarchy, the determination is based upon the significance of the unobservable factors to the overall fair value measurement. However, since Level 3 financial instruments typically include, in addition to the unobservable or Level 3 components, observable components (that is, components that are actively quoted and can be validated to external sources), the gains and losses below include changes in fair value due in part to observable factors that are part of the valuation methodology. ​ There were no changes in hierarchy classifications of Level 3 30, 2022. A reconciliation of the beginning and ending balances of Level 3 assets, comprised of Mortgage Servicing Rights, and liabilities recorded at fair value on a recurring basis for the nine months ended September 30, 2022 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ (Dollars in thousands) Assets Liabilities Fair value, January 1, 2022 ​ $ 65,620 ​ $ — ​ Servicing assets that resulted from transfers of financial assets ​ 14,617 ​ — ​ Changes in fair value due to valuation inputs or assumptions ​ 18,274 ​ — ​ Changes in fair value due to decay ​ (8,052) ​ — ​ Fair value, September 30, 2022 ​ $ 90,459 ​ $ — ​ ​ There were no unrealized losses included in accumulated other comprehensive income related to Level 3 financial assets and liabilities at September 30, 2022. ​ Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis ​ The tables below present the recorded amount of assets and liabilities measured at fair value on a nonrecurring basis: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ In Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs (Dollars in thousands) ​ Fair Value ​ (Level 1) ​ (Level 2) ​ (Level 3) September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ OREO ​ $ 2,160 ​ $ — ​ $ — ​ $ 2,160 ​ Bank property held for sale ​ ​ 25,043 ​ ​ — ​ — ​ ​ 25,043 ​ Individually evaluated loans ​ 52,368 ​ — ​ — ​ 52,368 ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ OREO ​ $ 2,736 ​ $ — ​ $ — ​ $ 2,736 ​ Bank property held for sale ​ ​ 9,578 ​ ​ — ​ — ​ ​ 9,578 ​ Individually evaluated loans ​ 20,802 ​ — ​ — ​ 20,802 ​ ​ Quantitative Information about Level 3 Fair Value Measurement ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ Valuation Technique Unobservable Input 2022 2021 Nonrecurring measurements: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Individually evaluated loans Discounted appraisals and discounted cash flows Collateral discounts ​ 25 % ​ 9 % OREO and premises held for sale Discounted appraisals Collateral discounts and estimated costs to sell ​ 15 % ​ 24 % ​ Fair Value of Financial Instruments ​ We used the following methods and assumptions in estimating our fair value disclosures for financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those models are significantly affected by the assumptions used, including the discount rates and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instrument. The use of different methodologies may have a material effect on the estimated fair value amounts. The fair value estimates presented herein are based on pertinent information available to Management as of September 30, 2022 and December 31, 2021. Such amounts have not been revalued for purposes of these consolidated financial statements since those dates and, therefore, current estimates of fair value may differ significantly from the amounts presented herein. ​ The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value: ​ Cash and Cash Equivalents ​ Trading Securities The fair values of trading securities are determined as follows: (1) for those securities that have traded prior to the date of the consolidated balance sheet but have not settled (date of sale) until after such date, the sales price is used as the fair value; and, (2) for those securities which have not traded as of the date of the consolidated balance sheet, the fair value was determined by broker price indications of similar or same securities. Investment Securities — Securities available for sale are valued at quoted market prices or dealer quotes. Securities held to maturity are valued at quoted market prices or dealer quotes similar to securities available for sale. The carrying value of FHLB and FRB stock approximates fair value based on the redemption provisions. The carrying value of our investment in unconsolidated subsidiaries approximates fair value. See Note 5 — Investment Securities for additional information, as well as page 32 regarding fair value. ​ Loans held for sale ​ Loans — The fair value of loans is based on an exit price. To estimate an exit price, all loans (fixed and variable) are being valued with a discounted cash flow analyses for loans that includes our estimate of future credit losses expected to be incurred over the life of the loans. Fair values for certain mortgage loans (e.g., one-to-four family residential) and other consumer loans are estimated using discounted cash flow analyses based on our current rates offered for new loans of the same type, structure and credit quality. Fair values for other loans (e.g., commercial real estate and investment property mortgage loans, commercial and industrial loans) are estimated using discounted cash flow analyses-using interest rates we currently offer for loans with similar terms to borrowers of similar credit quality. Fair values for non-performing loans are estimated using a discounted cash flow analysis. ​ Deposit Liabilities — The fair values disclosed for demand deposits (e.g., interest and non-interest bearing checking, passbook savings, and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). The carrying amounts of variable-rate, fixed-term money market accounts, and certificates of deposit approximate their fair values at the reporting date. Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits. ​ Federal Funds Purchased and Securities Sold Under Agreements to Repurchase ​ Other Borrowings ​ Accrued Interest ​ Derivative Financial Instruments ​ Commitments to Extend Credit, Standby Letters of Credit and Financial Guarantees — The fair values of commitments to extend credit are estimated taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. For fixed-rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair values of guarantees and letters of credit are based on fees currently charged for similar agreements or on the estimated costs to terminate them or otherwise settle the obligations with the counterparties at the reporting date. ​ The estimated fair value, and related carrying amount, of our financial instruments are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying Fair ​ ​ ​ ​ ​ ​ (Dollars in thousands) ​ Amount ​ Value ​ Level 1 ​ Level 2 ​ Level 3 September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 2,809,695 ​ $ 2,809,695 ​ $ 2,809,695 ​ $ — ​ $ — ​ Trading securities ​ ​ 51,940 ​ ​ 51,940 ​ ​ — ​ ​ 51,940 ​ ​ — ​ Investment securities ​ 8,287,543 ​ 7,848,527 ​ 179,755 ​ 7,668,772 ​ — ​ Loans held for sale ​ ​ 34,477 ​ ​ 34,477 ​ ​ — ​ ​ 34,477 ​ ​ — ​ Loans, net of allowance for credit losses ​ 28,511,905 ​ 28,271,062 ​ — ​ — ​ 28,271,062 ​ Accrued interest receivable ​ 124,553 ​ 124,553 ​ — ​ 28,508 ​ 96,045 ​ Mortgage servicing rights ​ 90,459 ​ 90,459 ​ — ​ — ​ 90,459 ​ SBA servicing assets ​ ​ 6,981 ​ ​ — ​ ​ — ​ ​ — ​ ​ 6,981 ​ Interest rate swap - non-designated hedge ​ 1,081,768 ​ 1,081,768 ​ — ​ 1,081,768 ​ — ​ Other derivative financial instruments (mortgage banking related) ​ 2,035 ​ 2,035 ​ — ​ 2,035 ​ — ​ Financial liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deposits ​ 37,666,021 ​ 37,578,773 ​ — ​ 37,578,773 ​ — ​ Federal funds purchased and securities sold under agreements to repurchase ​ 557,802 ​ 557,802 ​ — ​ 557,802 ​ — ​ Other borrowings ​ 392,368 ​ 379,992 ​ — ​ 379,992 ​ — ​ Accrued interest payable ​ 6,354 ​ 6,354 ​ — ​ 6,354 ​ — ​ Interest rate swap - non-designated hedge ​ 1,081,267 ​ 1,081,267 ​ — ​ 1,081,267 ​ — ​ Other derivative financial instruments (mortgage banking related) ​ 1,681 ​ 1,681 ​ — ​ 1,681 ​ — ​ Off balance sheet financial instruments: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commitments to extend credit ​ — ​ (92,429) ​ — ​ (92,429) ​ — ​ December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 6,843,147 ​ $ 6,843,147 ​ $ 6,843,147 ​ $ — ​ $ — ​ Trading securities ​ ​ 77,689 ​ ​ 77,689 ​ ​ — ​ ​ 77,689 ​ ​ — ​ Investment securities ​ 7,173,947 ​ 7,132,110 ​ 160,568 ​ 6,971,542 ​ — ​ Loans held for sale ​ ​ 191,723 ​ ​ 191,723 ​ ​ — ​ ​ 191,723 ​ ​ — ​ Loans, net of allowance for credit losses ​ 23,626,359 ​ 23,921,372 ​ — ​ — ​ 23,921,372 ​ Accrued interest receivable ​ 90,069 ​ 90,069 ​ — ​ 19,241 ​ 70,828 ​ Mortgage servicing rights ​ 65,620 ​ 65,620 ​ — ​ — ​ 65,620 ​ Interest rate swap - non-designated hedge ​ 408,776 ​ 408,776 ​ — ​ 408,776 ​ — ​ Other derivative financial instruments (mortgage banking related) ​ 5,966 ​ 5,966 ​ — ​ 5,966 ​ — ​ Financial liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deposits ​ 35,054,829 ​ 35,050,516 ​ — ​ 35,050,516 ​ — ​ Federal funds purchased and securities sold under agreements to repurchase ​ 781,239 ​ 781,239 ​ — ​ 781,239 ​ — ​ Other borrowings ​ 327,066 ​ 334,640 ​ — ​ 334,640 ​ — ​ Accrued interest payable ​ 3,345 ​ 3,345 ​ — ​ 3,345 ​ — ​ Interest rate swap - non-designated hedge ​ 410,137 ​ 410,137 ​ — ​ 410,137 ​ — ​ Off balance sheet financial instruments: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commitments to extend credit ​ ​ — ​ 93,501 ​ — ​ 93,501 ​ — ​ ​

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss).
Accumulated Other Comprehensive Income (Loss)	Note 16 — Accumulated Other Comprehensive Income (Loss) ​ The changes in each component of accumulated other comprehensive loss, net of tax, were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unrealized Gains and ​ ​ ​ ​ ​ Benefit ​ (Losses) on Securities ​ ​ ​ (Dollars in thousands) ​ Plans ​ Available for Sale ​ Total Three Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at June 30, 2022 ​ $ 57 ​ $ (490,941) ​ $ (490,884) Other comprehensive loss before reclassifications ​ — ​ (225,551) ​ (225,551) Amounts reclassified from accumulated other comprehensive loss ​ — ​ (23) ​ (23) Net comprehensive loss ​ — ​ (225,574) ​ (225,574) Balance at September 30, 2022 ​ $ 57 ​ $ (716,515) ​ $ (716,458) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at June 30, 2021 ​ $ (151) ​ $ 24,287 ​ $ 24,136 Other comprehensive loss before reclassifications ​ — ​ (24,607) ​ ​ (24,607) Amounts reclassified from accumulated other comprehensive loss ​ — ​ (49) ​ (49) Net comprehensive loss ​ — ​ (24,656) ​ (24,656) Balance at September 30, 2021 ​ $ (151) ​ $ (369) ​ $ (520) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at December 31, 2021 ​ $ 57 ​ $ (21,203) ​ $ (21,146) Other comprehensive loss before reclassifications ​ ​ — ​ ​ (695,289) ​ ​ (695,289) Amounts reclassified from accumulated other comprehensive loss ​ — ​ (23) ​ (23) Net comprehensive loss ​ — ​ (695,312) ​ (695,312) Balance at September 30, 2022 ​ $ 57 ​ $ (716,515) ​ $ (716,458) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at December 31, 2020 ​ $ (151) ​ $ 47,740 ​ $ 47,589 Other comprehensive loss before reclassifications ​ — ​ (48,033) ​ (48,033) Amounts reclassified from accumulated other comprehensive loss ​ — ​ (76) ​ (76) Net comprehensive loss ​ — ​ (48,109) ​ (48,109) Balance at September 30, 2021 ​ $ (151) ​ $ (369) ​ $ (520) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount Reclassified from Accumulated Other Comprehensive Income (Loss) ​ ​ (Dollars in thousands) ​ For the Three Months Ended September 30, ​ For the Nine Months Ended September 30, ​ ​ Accumulated Other Comprehensive Income (Loss) Component 2022 2021 2022 2021 Income Statement Line Item Affected Gains on sales of available for sale securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ (30) ​ $ (64) ​ $ (30) ​ $ (100) ​ Securities gains, net ​ ​ ​ 7 ​ ​ 15 ​ ​ 7 ​ ​ 24 ​ Provision for income taxes ​ ​ ​ (23) ​ ​ (49) ​ ​ (23) ​ ​ (76) ​ Net income Total reclassifications for the period ​ $ (23) ​ $ (49) ​ $ (23) ​ $ (76) ​ ​ ​

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2022
Derivative Financial Instruments
Derivative Financial Instruments	Note 17 — Derivative Financial Instruments ​ We use certain derivative instruments to meet the needs of customers as well as to manage the interest rate risk associated with certain transactions. The following table summarizes the derivative financial instruments used by the Company: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2022 ​ ​ ​ ​ December 31, 2021 ​ ​ Balance Sheet ​ Notional ​ Estimated Fair Value ​ Notional ​ Estimated Fair Value (Dollars in thousands) Location Amount Gain Loss Amount Gain Loss ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value hedge of interest rate risk: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pay fixed rate swap with counterparty ​ Other Assets and Other Liabilities ​ $ 17,800 ​ $ 514 ​ $ — ​ $ 15,716 ​ $ — ​ $ 1,355 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Not designated hedges of interest rate risk: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Customer related interest rate contracts: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Matched interest rate swaps with borrowers ​ Other Assets and Other Liabilities ​ ​ 10,587,773 ​ ​ 2,079 ​ ​ 1,081,267 ​ ​ 10,404,605 ​ ​ 408,776 ​ ​ 69,998 Matched interest rate swaps with counterparty ​ Other Assets and Other Liabilities ​ ​ 10,588,670 ​ ​ 1,079,175 ​ ​ — ​ ​ 10,402,394 ​ ​ — ​ ​ 338,784 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Not designated hedges of interest rate risk - mortgage banking activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Contracts used to hedge mortgage servicing rights ​ Other Assets and Other Liabilities ​ ​ 27,000 ​ ​ — ​ ​ 1,681 ​ ​ 205,000 ​ ​ 1,228 ​ ​ — Contracts used to hedge mortgage pipeline ​ Other Assets ​ ​ 83,500 ​ ​ 2,035 ​ ​ — ​ ​ 324,000 ​ ​ 4,738 ​ ​ — Total derivatives ​ ​ ​ $ 21,304,743 ​ $ 1,083,803 ​ $ 1,082,948 ​ $ 21,351,715 ​ $ 414,742 ​ $ 410,137 ​ Cash Flow Hedge of Interest Rate Risk The Company is exposed to interest rate risk in the course of its business operations and manages a portion of this risk through the use of derivative financial instruments, in the form of interest rate swaps. We account for interest rate swaps that are classified as cash flow hedges in accordance with FASB ASC 815, Derivatives and Hedging , which requires that all derivatives be recognized as assets or liabilities on the balance sheet at fair value. We had no cash flow hedges as of September 30, 2022 and December 31, 2021. For more information regarding the fair value of our derivative financial instruments, see Note 15 — Fair Value to these financial statements. For derivatives designated as hedging exposure to variable cash flows of a forecasted transaction (cash flow hedge), the derivative’s entire gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings when the forecasted transaction affects earnings or when the hedge is terminated. For derivatives that are not designated as hedging instruments, changes in the fair value of the derivatives are recognized in earnings immediately. For designated hedging relationships, we have a third party perform retrospective and prospective effectiveness testing on a quarterly basis using quantitative methods to determine if the hedge is still highly effective. Hedge accounting ceases on transactions that are no longer deemed highly effective, or for which the derivative has been terminated or de-designated. ​ Balance Sheet Fair Value Hedge ​ As of September 30, 2022 and December 31, 2021, the Company maintained loan swaps, with an aggregate notional amount of $17.8 million and $15.7 million, respectively, accounted for as fair value hedges in accordance with ASC 815, Derivatives and Hedgin g. This derivative protects us from interest rate risk caused by changes in the LIBOR curve in relation to a certain designated fixed rate loan. The derivative converts the fixed rate loan to a floating rate. Settlement occurs in any given period where there is a difference in the stated fixed rate and variable rate and the difference is recorded in net interest income. The fair value of this hedge is recorded in either other assets or in other liabilities depending on the position of the hedge with the offset recorded in loans. For the three and nine months ended September 30, 2022, a loss of ​ Non-designated Hedges of Interest Rate Risk ​ Customer Swap ​ We maintain interest rate swap contracts with customers that are classified as non-designated hedges and are not speculative in nature. These agreements are designed to convert customer’s variable rate loans with the Company to fixed rate. These interest rate swaps are executed with loan customers to facilitate a respective risk management strategy and allow the customer to pay a fixed rate of interest to the Company. These interest rate swaps are simultaneously hedged by executing offsetting interest rate swaps with unrelated market counterparties to minimize the net risk exposure to the Company resulting from the transactions and allow the Company to receive a variable rate of interest. The interest rate swaps pay and receive interest based on a floating rate based on one month LIBOR plus credit spread, with payments being calculated on the notional amount. The Company is in the process of implementing a plan to transition these interest rate swap contracts to a reference rate other than LIBOR. For discussion related to reference rate reform, please refer to Issued But Not Yet Adopted Accounting Standards within Note 2—Summary of Significant Accounting Policies. The interest rate swaps are settled monthly with varying maturities. ​ As the interest rate swaps associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are recognized directly in earnings. As of September 30, 2022 and December 31, 2021, the interest rate swaps had an aggregate notional amount of approximately billion, respectively. At September 30, 2022, the fair value of the interest rate swap derivatives are recorded in other assets at . At December 31, 2021, the fair value of the interest rate swap derivatives was recorded in other assets at . Changes in the fair market value of these interest rate swaps is recorded through earnings. . We also provided million in investment securities at market value as collateral on the counterparty, which is included in Investment Securities – Available for Sale. Counterparties provided ​ Foreign Exchange ​ We also enter into foreign exchange contracts with customers to accommodate their need to convert certain foreign currencies into U.S. Dollars. To offset the foreign exchange risk, the Company has entered into substantially identical agreements with an unrelated market counterparty to hedge these foreign exchange contracts. At September 30, 2022 and December 31, 2021, there were no outstanding contracts or agreements related to foreign currency. If there were foreign currency contracts outstanding at September 30, 2022, the fair value of these contracts would be included in other assets and other liabilities in the accompanying balance sheet. All changes in fair value are recorded as other noninterest income. There was ​ Mortgage Banking ​ We also have derivatives contracts that are not classified as accounting hedges to mitigate risks related to the Company’s mortgage banking activities. These instruments may include financial forwards, futures contracts, and options written and purchased, which are used to hedge MSRs; while forward sales commitments are typically used to hedge the mortgage pipeline. Such instruments derive their cash flows, and therefore their values, by reference to an underlying instrument, index or referenced interest rate. The Company does not elect hedge accounting treatment for any of these derivative instruments and as a result, changes in fair value of the instruments (both gains and losses) are recorded in the Company’s consolidated statements of income in mortgage banking income. ​ ​ Mortgage Servicing Rights ​ Derivatives contracts related to MSRs are used to help offset changes in fair value and are written in amounts referred to as notional amounts. Notional amounts provide a basis for calculating payments between counterparties but do not represent amounts to be exchanged between the parties and are not a measure of financial risk. On September 30, 2022, we had derivative financial instruments outstanding with notional amounts totaling 31, 2021. The estimated net fair value of the open contracts related to the MSRs was recorded as a loss of ​ Mortgage Pipeline ​ The following table presents our notional value of forward sale commitments and the fair value of those obligations along with the fair value of the mortgage pipeline related to the held for sale portfolio: ​ ​ ​ ​ ​ ​ ​ ​ ​ (Dollars in thousands) September 30, 2022 December 31, 2021 Mortgage loan pipeline ​ $ 77,530 ​ $ 264,000 ​ Expected closures ​ 70,833 ​ 233,265 ​ Fair value of mortgage loan pipeline commitments ​ (646) ​ 4,759 ​ Forward sales commitments ​ 83,500 ​ 324,000 ​ Fair value of forward commitments ​ 2,681 ​ (21) ​ ​

Capital Ratios

Capital Ratios	9 Months Ended
	Sep. 30, 2022
Capital Ratios
Capital Ratios	Note 18 — Capital Ratios ​ We are subject to regulations with respect to certain risk-based capital ratios. These risk-based capital ratios measure the relationship of capital to a combination of balance sheet and off-balance sheet risks. The values of both balance sheet and off-balance sheet items are adjusted based on the rules to reflect categorical credit risk. In addition to the risk-based capital ratios, the regulatory agencies have also established a leverage ratio for assessing capital adequacy. The leverage ratio is equal to Tier 1 capital divided by total consolidated on-balance sheet assets (minus amounts deducted from Tier 1 capital). The leverage ratio does not involve assigning risk weights to assets. ​ Under current regulations, the Company and the Bank are subject to a minimum ratio of common equity Tier 1 capital (“CET1”) to risk-weighted assets of 4.5%. and a minimum required ratio of Tier 1 capital to risk-weighted assets of 6% . The minimum required leverage ratio is . The minimum required total capital to risk-weighted assets ratio is ​ In order to avoid restrictions on capital distributions and discretionary bonus payments to executives, under the new rules a covered banking organization is also required to maintain a “capital conservation buffer” in addition to its minimum risk-based capital requirements. This buffer is required to consist solely of CET1, and the buffer applies to all three risk-based measurements (CET1, Tier 1 capital and total capital). The capital conservation buffer became fully phased-in on January 1, 2019 and consists of an additional amount of Tier 1 common equity equal to ​ The Bank is also subject to the regulatory framework for prompt corrective action, which identifies five capital categories for insured depository institutions (well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized) and is based on specified thresholds for each of the three risk-based regulatory capital ratios (CET1, Tier 1 capital and total capital) and for the leverage ratio. ​ The following table presents actual and required capital ratios as of September 30, 2022 and December 31, 2021 for the Company and the Bank under the current capital rules. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Required to be ​ ​ ​ ​ ​ ​ ​ Minimum Capital Considered Well ​ ​ Actual ​ Required - Basel III ​ Capitalized ​ (Dollars in thousands) Amount Ratio Capital Amount Ratio Capital Amount Ratio September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common equity Tier 1 to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ $ 3,666,829 11.02 % $ 2,328,284 ​ 7.00 % $ 2,161,978 6.50 % SouthState Bank (the Bank) ​ 3,956,892 11.91 % 2,325,129 ​ 7.00 % 2,159,049 6.50 % Tier 1 capital to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,666,829 11.02 % 2,827,202 ​ 8.50 % 2,660,896 8.00 % SouthState Bank (the Bank) ​ 3,956,892 11.91 % 2,823,371 ​ 8.50 % 2,657,291 8.00 % Total capital to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 4,311,208 12.96 % 3,492,427 ​ 10.50 % 3,326,121 10.00 % SouthState Bank (the Bank) ​ 4,211,272 12.68 % 3,487,694 ​ 10.50 % 3,321,613 10.00 % Tier 1 capital to average assets (leverage ratio): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,666,829 8.33 % 1,760,176 ​ 4.00 % 2,200,220 5.00 % SouthState Bank (the Bank) ​ 3,956,892 9.00 % 1,759,585 ​ 4.00 % 2,199,481 5.00 % December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common equity Tier 1 to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ $ 3,201,644 11.75 % $ 1,906,831 ​ 7.00 % $ 1,770,629 6.50 % SouthState Bank (the Bank) ​ 3,431,069 12.62 % 1,902,954 ​ 7.00 % 1,767,029 6.50 % Tier 1 capital to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,201,644 11.75 % 2,315,438 ​ 8.50 % 2,179,236 8.00 % SouthState Bank (the Bank) ​ 3,431,069 12.62 % 2,310,730 ​ 8.50 % 2,174,804 8.00 % Total capital to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,692,674 13.56 % 2,860,247 ​ 10.50 % 2,724,045 10.00 % SouthState Bank (the Bank) ​ 3,594,099 13.22 % 2,854,431 ​ 10.50 % 2,718,505 10.00 % Tier 1 capital to average assets (leverage ratio): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,201,644 8.05 % 1,590,045 ​ 4.00 % 1,987,556 5.00 % SouthState Bank (the Bank) ​ 3,431,069 8.65 % 1,587,212 ​ 4.00 % 1,984,015 5.00 % ​ As of September 30, 2022 and December 31, 2021, the capital ratios of the Company and the Bank were well in excess of the minimum regulatory requirements and exceeded the thresholds for the “well capitalized” regulatory classification. ​ In June 2016, the FASB issued ASU No. 2016-13 which required an entity to use a new impairment model known as the CECL model to estimate its lifetime “expected credit loss.” This standard was adopted and became effective on January 1, 2020 and the Company applied the provisions of the standard using the modified retrospective method as a cumulative-effect adjustment to retained earnings. Related to the implementation of ASU 2016-13, we recorded additional allowance for credit losses for loans of million. Instead of recognizing the effects from ASU 2016-13 at adoption, the standard included a transitional method option for recognizing the adoption date effects on the Company’s regulatory capital calculations over a three-year phase-in. In March 2020, in response to the COVID-19 pandemic, the regulatory agencies provided an additional transitional method option of a two-year deferral for the start of the three-year phase-in of the recognition of the adoption date effects of ASU 2016-13 along with an option to defer the current impact on regulatory capital calculations of ASU 2016-13 during the first two years (“5-year method”). Under this 5-year method, the Company would recognize an estimate of the previous incurred loss method for determining the allowance for credit losses in regulatory capital calculations and the difference from the CECL method would be deferred for two years. After two years, the effects from adoption date and the deferral difference from the first two years of applying CECL would be phased-in over three years using the straight-line method. The regulatory rules provided a one-time opportunity at the end of the first quarter of 2020 for covered banking organizations to choose its transition option for CECL. The Company chose the 5-year method and is deferring the recognition of the effects from adoption date and the CECL difference from the first two years of application. This amount was fixed as of December 31, 2021, and that amount began the three-year phase out in the first quarter of 2022 with . ​ During the second quarter of 2022, the Company redeemed $13.0 million of subordinated debentures, with a first call date of June 30, 2022, resulting in a reduction in total risk-based capital of $13.0 million.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2022
Goodwill and Other Intangible Assets
Goodwill and Other Intangible Assets	Note 19 — Goodwill and Other Intangible Assets ​ The carrying amount of goodwill was $1.9 billion and $1.6 billion, respectively billion at September 30, 2022 and December 31, 2021. The Company added million in goodwill related to the Atlantic Capital acquisition in the first quarter of 2022. The Company made subsequent fair value adjustments related to the Atlantic Capital merger in the second quarter of 2022 that decreased goodwill by million. The Company also added million in core deposit intangibles related to the Atlantic Capital transaction during the first quarter of 2022. The Company’s other intangible assets, consisting of core deposit intangibles, noncompete intangibles, and client list intangibles are included on the face of the balance sheet. ​ The Company last completed its annual valuation of the carrying value of its goodwill as of October 31, 2021. We determined that no impairment charge was necessary as of the impairment testing period. We will continue to monitor the impact of current economic conditions and other events on the Company’s business, operating results, cash flows and/or financial condition ​ The following is a summary of gross carrying amounts and accumulated amortization of other intangible assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ (Dollars in thousands) 2022 2021 Gross carrying amount ​ $ 279,884 ​ $ 257,874 ​ Accumulated amortization ​ (154,494) ​ (129,807) ​ ​ ​ $ 125,390 ​ $ 128,067 ​ ​ Amortization expense totaled $7.8 million and $25.2 million, for the three and nine months ended September 30, 2022, compared to $8.5 million and $26.7 million for the three and nine months ended September 30, 2021. Other intangibles are amortized using either the straight-line method or an accelerated basis over their estimated useful lives, with lives generally between two ​ ​ ​ ​ ​ ​ (Dollars in thousands) ​ ​ ​ ​ Quarter ending: ​ December 31, 2022 ​ $ 8,027 ​ March 31, 2023 ​ 7,299 ​ June 30, 2023 ​ 7,028 ​ September 30, 2023 ​ 6,616 ​ December 31, 2023 ​ ​ 6,615 ​ Thereafter ​ 82,824 ​ ​ ​ $ 118,409 ​ ​

Loan Servicing, Mortgage Origin

Loan Servicing, Mortgage Origination, and Loans Held for Sale	9 Months Ended
	Sep. 30, 2022
Loan Servicing, Mortgage Origination, and Loans Held for Sale
Loan Servicing, Mortgage Origination, and Loans Held for Sale	Note 20 — Loan Servicing, Mortgage Origination, and Loans Held for Sale ​ As of September 30, 2022 and December 31, 2021, the portfolio of residential mortgages serviced for others, which is not included in the accompanying balance sheets, was $6.6 billion and $6.1 billion, respectively. Servicing loans for others generally consists of collecting mortgage payments, maintaining escrow accounts and disbursing payments to investors. The amount of contractually specified servicing fees we earned during the three and nine months ended September 30, 2022 and September 30, 2021 were million, respectively. Servicing fees are recorded in ​ At September 30, 2022 and December 31, 2021, MSRs were $90.5 million and $65.6 million on our consolidated balance sheets, respectively. MSRs are recorded at fair value with changes in fair value recorded as a component of in the Condensed Consolidated Statements of Income. The market value adjustments due to interest rates related to MSRs recorded in mortgage banking income for the three and nine months ended September 30, 2022 and September 30, 2021 were gains of million, respectively. We used various free-standing derivative instruments to mitigate the income statement effect of changes in fair value due to changes in market value adjustments and to changes in valuation inputs and assumptions related to MSRs. ​ See Note 15 — Fair Value for the changes in fair value of MSRs. The following table presents the changes in the fair value of the MSR and offsetting hedge. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Nine Months Ended ​ (Dollars in thousands) September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Increase in fair value of MSRs ​ $ 2,661 ​ $ 1,659 ​ $ 18,274 ​ $ 7,543 ​ Decay of MSRs ​ (2,530) ​ (3,427) ​ (8,052) ​ (11,276) ​ Loss related to derivatives ​ ​ (3,572) ​ ​ (577) ​ ​ (17,963) ​ ​ (4,178) ​ Net effect on statements of income ​ $ (3,441) ​ $ (2,345) ​ $ (7,741) ​ $ (7,911) ​ ​ The fair value of MSRs is highly sensitive to changes in assumptions and fair value is determined by estimating the present value of the asset’s future cash flows utilizing market-based prepayment rates, discount rates and other assumptions validated through comparison to trade information, industry surveys and with the use of independent third-party appraisals. Changes in prepayment speed assumptions have the most significant impact on the fair value of MSRs. Generally, as interest rates decline, mortgage loan prepayments accelerate due to increased refinance activity, which results in a decrease in the fair value of the MSR. Measurement of fair value is limited to the conditions existing, and the assumptions used as of a particular point in time, and those assumptions may not be appropriate if they are applied at a different time. See Note 15 — Fair Value for additional information regarding fair value. ​ The characteristics and sensitivity analysis of the MSRs are included in the following table: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ ​ December 31, ​ ​ (Dollars in thousands) 2022 2021 Composition of residential loans serviced for others ​ ​ ​ ​ ​ ​ ​ ​ ​ Fixed-rate mortgage loans ​ ​ 100.0 % ​ ​ 99.9 % ​ Adjustable-rate mortgage loans ​ ​ — % ​ ​ 0.1 % ​ Total ​ ​ 100.0 % ​ ​ 100.0 % ​ Weighted average life ​ ​ 8.43 years ​ ​ 7.35 years ​ Constant Prepayment rate (CPR) ​ ​ 6.4 % ​ ​ 8.4 % ​ Weighted average discount rate ​ ​ 10.2 % ​ ​ 9.0 % ​ Effect on fair value due to change in interest rates ​ ​ ​ ​ ​ ​ ​ ​ ​ 25 basis point increase ​ $ 510 ​ ​ $ 3,961 ​ ​ 50 basis point increase ​ ​ 925 ​ ​ ​ 7,261 ​ ​ 25 basis point decrease ​ ​ (628) ​ ​ ​ (4,371) ​ ​ 50 basis point decrease ​ ​ (1,389) ​ ​ ​ (8,966) ​ ​ ​ The sensitivity calculations in the previous table are hypothetical and should not be considered to be predictive of future performance. Changes in fair value based on adverse changes in assumptions generally cannot be extrapolated because the relationship of the changes in assumptions to fair value may not be linear. Also, the effects of an adverse variation in a particular assumption on the fair value of the MSRs is calculated without changing any other assumptions, while in reality, changes in one factor may result in changing another, which may magnify or contract the effect of the change. ​ Custodial escrow balances maintained in connection with the loan servicing were $74.7 million and $29.6 million at September 30, 2022 and December 31, 2021, respectively. ​ Whole loan sales were $272.8 million and $1.4 billion for the three and nine months ended September 30, 2022, compared to $612.5 million and $2.4 billion for the three and nine months ended September 30, 2021. For the three and nine months ended September 30, 2022, ​ Loans held for sale have historically been comprised of residential mortgage loans awaiting sale in the secondary market, which generally settle in 15 to 45 days . Loans held for sale were 31, 2021, respectively.

Repurchase Agreements

Repurchase Agreements	9 Months Ended
	Sep. 30, 2022
Repurchase Agreements
Repurchase Agreements	Note 21 — Repurchase Agreements ​ Securities sold under agreements to repurchase (“repurchase agreements”) represent funds received from customers, generally on an overnight or continuous basis, which are collateralized by investment securities owned or, at times, borrowed and re-hypothecated by the Company. Repurchase agreements are subject to terms and conditions of the master repurchase agreements between the Company and the client and are accounted for as secured borrowings. Repurchase agreements are included in federal funds purchased and securities sold under agreements to repurchase on the condensed consolidated balance sheets. ​ At September 30, 2022 and December 31, 2021, our repurchase agreements totaled $344.0 million and $400.0 million, respectively. All of our repurchase agreements were overnight or continuous (until-further-notice) agreements at September 30, 2022 and December 31, 2021. These borrowings were collateralized with government, government-sponsored enterprise, or state and political subdivision-issued securities with a carrying value of 31, 2021, respectively. Declines in the value of the collateral would require us to increase the amounts of securities pledged.

Stock Repurchase Program

Stock Repurchase Program	9 Months Ended
	Sep. 30, 2022
Stock Repurchase Program
Stock Repurchase Program	Note 22 — Stock Repurchase Program On January 27, 2021, the Company’s Board of Directors approved a stock repurchase program (“2021 Stock Repurchase Plan”) authorizing the Company to repurchase up to 3,500,000 of the Company’s common shares. During the nine months ended September 30, 2022, the Company repurchased a total of per share pursuant to the 2021 Stock Repurchase Plan. Life-to-date as of September 30, 2022, the Company has repurchased a total of shares remaining that may be repurchased under the 2021 Stock Repurchase. On April 27, 2022, the Company’s Board of Directors approved a new stock repurchase program (“2022 Stock Repurchase Program”) authorizing the Company to repurchase up to 3,750,000 of the Company’s common shares along with the remaining authorized shares of 370,021 from the 2021 Stock Repurchase Plan for a total authorization of 4,120,021 shares. The Company did not repurchase any shares through the 2022 Stock Repurchase Program during the three or nine months ended September 30, 2022. As of September 30, 2022, there is a total of

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2022
Subsequent Events
Subsequent Events	Note 23 — Subsequent Events ​ On October 24, 2022, the Company announced the declaration of a quarterly cash dividend on its common stock at $0.50 per share. The dividend is payable on November 18, 2022 to shareholders of record as of November 11, 2022. ​

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2022
Summary of Significant Accounting Policies
Allowance for Credit Losses ("ACL")	Allowance for Credit Losses (“ACL”) ​ On January 1, 2020, we adopted the requirements of Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, sometimes referred to herein as ASU 2016-13. Topic 326 was subsequently amended by ASU No. 2019-11, Codification Improvements to Topic 326, Financial Instruments-Credit Losses; ASU No. 2019-05, Codification Improvements to Topic 326, Financial Instruments-Credit Losses; and ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. This standard applies to all financial assets measured at amortized cost and off-balance sheet credit exposures, including loans, investment securities and unfunded commitments. We applied the standard’s provisions using the modified retrospective method as a cumulative-effect adjustment to retained earnings as of January 1, 2020 . ACL – Investment Securities Management uses a systematic methodology to determine its ACL for investment securities held to maturity. The ACL is a valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected on the held to maturity portfolio. Management considers the effects of past events, current conditions, and reasonable and supportable forecasts on the collectability of the loan portfolio. The Company’s estimate of its ACL involves a high degree of judgment; therefore, Management’s process for determining expected credit losses may result in a range of expected credit losses. Management monitors the held to maturity portfolio to determine whether a valuation account should be recorded. As of September 30, 2022 and December 31, 2021, the Company had Management excludes the accrued interest receivable balance from the amortized cost basis in measuring expected credit losses on the investment securities and does not record an allowance for credit losses on accrued interest receivable. As of September 30, 2022 and December 31, 2021, the accrued interest receivables for all investment securities recorded in Other Assets were Management no longer evaluates securities for other-than-temporary impairment, otherwise referred to herein as OTTI, as ASC Subtopic 326-30, Financial Instruments—Credit Losses—Available for Sale Debt Securities, changes the accounting for recognizing impairment on available for sale debt securities. Each quarter, Management evaluates impairment where there has been a decline in fair value below the amortized cost basis of a security to determine whether there is a credit loss associated with the decline in fair value. Management considers the nature of the collateral, potential future changes in collateral values, default rates, delinquency rates, third-party guarantees, credit ratings, interest rate changes since purchase, volatility of the security’s fair value and historical loss information for financial assets secured with similar collateral among other factors. Credit losses are calculated individually, rather than collectively, using a discounted cash flow method, whereby Management compares the present value of expected cash flows with the amortized cost basis of the security. The credit loss component would be recognized through the Provision for Credit Losses in the Condensed Consolidated Statements of Income. ACL - Loans The ACL for loans held for investment reflects Management’s estimate of losses that will result from the inability of our borrowers to make required loan payments. The Company established the incremental increase in the ACL at adoption through equity and subsequent adjustments through a provision for or recovery of credit losses recorded to earnings. The Company records loans charged off against the ACL and subsequent recoveries, if any, increase the ACL when they are recognized. ​ Management uses systematic methodologies to determine its ACL for loans held for investment and certain off-balance-sheet credit exposures. The ACL is a valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected on the loan portfolio. Management considers the effects of past events, current conditions, and reasonable and supportable forecasts on the collectability of the loan portfolio. The Company’s estimate of its ACL involves a high degree of judgment; therefore, Management’s process for determining expected credit losses may result in a range of expected credit losses. The Company’s ACL recorded in the balance sheet reflects Management’s best estimate within the range of expected credit losses. The Company recognizes in net income the amount needed to adjust the ACL for Management’s current estimate of expected credit losses. The Company’s ACL is calculated using collectively evaluated and individually evaluated loans. ​ The allowance for credit losses is measured on a collective pool basis when similar risk characteristics exist. Loans with similar risk characteristics are grouped into homogenous segments, or pools, for analysis. The Discounted Cash Flow (“DCF”) method is used for each loan in a pool, and the results are aggregated at the pool level. A periodic tendency to default and absolute loss given default are applied to a projective model of the loan’s cash flow while considering prepayment and principal curtailment effects. The analysis produces expected cash flows for each instrument in the pool by pairing loan-level term information (e.g., maturity date, payment amount, interest rate, etc.) with top-down pool assumptions (e.g., default rates and prepayment speeds). The Company has identified the following portfolio segments: Owner-Occupied Commercial Real Estate, Non-Owner Occupied Commercial Real Estate, Multifamily, Municipal, Commercial and Industrial, Commercial Construction and Land Development, Residential Construction, Residential Senior Mortgage, Residential Junior Mortgage, Revolving Mortgage, and Consumer and Other. ​ In determining the proper level of the ACL, Management has determined that the loss experience of the Bank provides the best basis for its assessment of expected credit losses. The Company therefore used its own historical credit loss experience by each loan segment over an economic cycle, while excluding loss experience from certain acquired institutions (i.e., failed banks). For most of the segment models for collectively evaluated loans, the Company incorporated two or more macroeconomic drivers using a statistical regression modeling methodology. ​ Management considers forward-looking information in estimating expected credit losses. The Company subscribes to a third-party service which provides a quarterly macroeconomic baseline outlook and alternative scenarios for the United States economy. The baseline, along with the evaluation of alternative scenarios, is used by Management to determine the best estimate within the range of expected credit losses. Management has evaluated the appropriateness of the reasonable and supportable forecast scenarios and has made adjustments as needed. For the contractual term that extends beyond the reasonable and supportable forecast period, the Company reverts to the long term mean of historical factors within four quarters using a straight-line approach. The Company generally uses a four-quarter forecast and a four-quarter reversion period. ​ Included in its systematic methodology to determine its ACL, Management considers the need to qualitatively adjust expected credit losses for information not already captured in the loss estimation process. These qualitative adjustments either increase or decrease the quantitative model estimation (i.e., formulaic model results). Each period, the Company considers qualitative factors that are relevant within the qualitative framework that includes the following: 1) Lending Policy; 2) Economic conditions not captured in models; 3) Volume and Mix of Loan Portfolio; 4) Past Due Trends; 5) Concentration Risk; 6) External Factors; and 7) Model Limitations. ​ When a loan no longer shares similar risk characteristics with its segment, the asset is assessed to determine whether it should be included in another pool or should be individually evaluated. The Company’s threshold for individually evaluated loans includes all non-accrual loans with a net book balance in excess of million. Management will monitor the credit environment and make adjustments to this threshold in the future if warranted. Based on the threshold above, consumer financial assets will generally remain in pools unless they meet the dollar threshold. The expected credit losses on individually evaluated loans will be estimated based on discounted cash flow analysis unless the loan meets the criteria for use of the fair value of collateral, either by virtue of an expected foreclosure or through meeting the definition of collateral-dependent. Financial assets that have been individually evaluated can be returned to a pool for purposes of estimating the expected credit loss insofar as their credit profile improves and that the repayment terms were not considered to be unique to the asset. ​ Management measures expected credit losses over the contractual term of a loan. When determining the contractual term, the Company considers expected prepayments but is precluded from considering expected extensions, renewals, or modifications, unless the Company reasonably expects it will execute a TDR with a borrower. In the event of a reasonably expected TDR, the Company factors the reasonably-expected TDR into the current expected credit losses estimate. For consumer loans, the point at which a TDR is reasonably expected is when the Company approves the borrower’s application for a modification (i.e., the borrower qualifies for the TDR) or when the Credit Administration department approves loan concessions on substandard loans. For commercial loans, the point at which a TDR is reasonably expected is when the Company approves the loan for modification or when the Credit Administration department approves loan concessions on substandard loans. The Company uses a discounted cash flow methodology for a TDR to calculate the effect of the concession provided to the borrower within the ACL. The Company has not chosen to early adopt ASU No. 2020-04, Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures, that allows for the retirement of TDR guidance, which does not go into effect until early 2023. ​ ​ For purchased credit-deteriorated, otherwise referred to herein as PCD, assets are defined as acquired individual financial assets (or acquired groups of financial assets with similar risk characteristics) that, as of the date of acquisition, have experienced a more-than-insignificant deterioration in credit quality since origination, as determined by the Company’s assessment. The Company records acquired PCD loans by adding the expected credit losses (i.e., allowance for credit losses) to the purchase price of the financial assets rather than recording through the provision for credit losses in the income statement. The expected credit loss, as of the acquisition day, of a PCD loan is added to the allowance for credit losses. The non-credit discount or premium is the difference between the unpaid principal balance and the amortized cost basis as of the acquisition date. Subsequent to the acquisition date, the change in the ACL on PCD loans is recognized through the Provision for Credit Losses in the Condensed Consolidated Statements of Income. The non-credit discount or premium is accreted or amortized, respectively, into interest income over the remaining life of the PCD loan on a level-yield basis. In accordance with the transition requirements within the standard, the Company’s acquired credit-impaired loans (i.e., ACI or Purchased Credit Impaired) were treated as PCD loans. ​ The Company follows its nonaccrual policy by reversing contractual interest income in the income statement when the Company places a loan on nonaccrual status. Therefore, Management excludes the accrued interest receivable balance from the amortized cost basis in measuring expected credit losses on the portfolio and does not record an allowance for credit losses on accrued interest receivable. As of September 30, 2022 and December 31, 2021, the accrued interest receivables for loans recorded in Other Assets were ​ The Company has a variety of assets that have a component that qualifies as an off-balance sheet exposure. These primarily include undrawn portions of revolving lines of credit and standby letters of credit. The expected losses associated with these exposures within the unfunded portion of the expected credit loss will be recorded as a liability on the balance sheet. Management has determined that a majority of the Company’s off-balance-sheet credit exposures are not unconditionally cancellable. Management completes funding studies based on historical data to estimate the percentage of unfunded loan commitments that will ultimately be funded to calculate the reserve for unfunded commitments. Management applies this funding rate, along with the loss factor rate determined for each pooled loan segment, to unfunded loan commitments, excluding unconditionally cancellable exposures and letters of credit, to arrive at the reserve for unfunded loan commitments. As of September 30, 2022 and December 31, 2021, the liabilities recorded for expected credit losses on unfunded commitments were million, respectively.

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables) - Atlantic Capital	9 Months Ended
	Sep. 30, 2022
Mergers and Acquisitions
Schedule of assets acquired, liabilities assumed, and fair value of total consideration transferred	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Initial ​ Subsequent ​ ​ ​ ​ ​ As Recorded ​ Fair Value ​ Fair Value ​ As Recorded by ​ (Dollars in thousands) by Atlantic Capital Adjustments Adjustments ​ the Company Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 250,134 ​ $ 24 (a) $ — ​ $ 250,158 ​ Investment securities ​ ​ 717,332 ​ ​ (13,622) (b) ​ — ​ ​ 703,710 ​ Loans, net of allowance and mark ​ 2,394,256 ​ (18,964) (c) ​ (5,614) (c) 2,369,678 ​ Premises and equipment ​ 16,892 ​ 2,608 (d) ​ — ​ 19,500 ​ Intangible assets ​ ​ 22,572 ​ ​ (1,781) (e) ​ — ​ ​ 20,791 ​ Bank owned life insurance ​ ​ 74,613 ​ ​ — ​ ​ — ​ ​ 74,613 ​ Deferred tax asset ​ ​ 30,231 ​ ​ 2,273 (f) ​ (444) (f) ​ 32,060 ​ Other assets ​ 45,274 ​ (1,277) (g) ​ 7,557 (g) 51,554 ​ Total assets ​ $ 3,551,304 ​ $ (30,739) ​ $ 1,499 ​ $ 3,522,064 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deposits: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Noninterest-bearing ​ $ 1,411,671 ​ $ — ​ $ — ​ $ 1,411,671 ​ Interest-bearing ​ 1,616,970 ​ — ​ ​ — ​ 1,616,970 ​ Total deposits ​ 3,028,641 ​ — ​ ​ — ​ 3,028,641 ​ Federal funds purchased and securities sold under agreements to repurchase ​ ​ 50,000 ​ ​ — ​ ​ — ​ ​ 50,000 ​ Other borrowings ​ ​ 74,131 ​ ​ 4,286 (h) ​ — ​ ​ 78,417 ​ Other liabilities ​ 50,711 ​ (2,075) (i) ​ — ​ 48,636 ​ Total liabilities ​ ​ 3,203,483 ​ ​ 2,211 ​ ​ — ​ ​ 3,205,694 ​ Net identifiable assets acquired over (under) liabilities assumed ​ ​ 347,821 ​ ​ (32,950) ​ ​ 1,499 ​ ​ 316,370 ​ Goodwill ​ — ​ 342,939 ​ ​ (1,499) ​ 341,440 ​ Net assets acquired over liabilities assumed ​ $ 347,821 ​ $ 309,989 ​ $ — ​ $ 657,810 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consideration: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ South State Corporation common shares issued ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 7,330,803 ​ Purchase price per share of the Company's common stock ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 90.00 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Company common stock issued ($659,772) and cash exchanged for fractional shares ($19) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 659,791 ​ Stock option conversion ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 1,135 ​ Restricted stock unit conversion ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2,870 ​ Restricted stock awards conversion (unvested awards) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (5,986) ​ Fair value of total consideration transferred ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 657,810 ​ Explanation of fair value adjustments (a)— Represents an adjustment to record time deposits with financial institutions at fair value (premium). (b)— Represents the reversal of Atlantic Capital 's existing fair value adjustments of $17.2 million and the adjustment to record securities at fair value (discount) totaling $30.9 million (includes reclassification of all securities held as HTM to AFS totaling $237.6 million). (c)— Represents approximately 1.40%, or $34.0 million, net credit discount of the loan portfolio and 2.24% total net discount, or $54.3 million, including non-credit discount, based on a third-party valuation. Also, includes a reversal of Atlantic Capital's ending allowance for credit losses of (d)— Represents the preliminary fair value adjustments of $2.6 million on fixed assets and leased assets. (e)— Represents approximately $17.5 million, or 0.63%, of CDI amount and $3.2 million for SBA servicing asset based on a third-party valuation. Atlantic Capital’s pre-merger goodwill and servicing asset of (f)— Represents deferred tax asset related to fair value adjustments with effective tax rate of 24.6% , which includes an adjustment from Atlantic Capital’s effective tax rate to the Company’s effective tax rate. The difference in effective tax rates relates to state income taxes. (g)— Represents the fair value adjustment (decrease) for low-income housing investments of $1.1 million, write-off of prepaid assets of $233,000, adjustments to receivables of $154,000 and fair value adjustment for Small Business Investment Company (“SBIC”) investments of $7.4 million. (h)— Represents the reversal of the existing Atlantic Capital’s issuance costs on subordinated debt of $0.9 million and recording the fair value adjustment (premium) of $3.4 million, based on a third-party valuation. (i)— Represents the reversal of $2.8 million of unfunded commitment liability at purchase date and the fair value adjustment to increase lease liabilities associated with rental facilities totaling $1.4 million. Also includes the reversal of uncertain tax liability of
Schedule of proforma information	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pro Forma ​ Pro Forma ​ Pro Forma ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ Nine Months Ended ​ (Dollars in thousands) ​ September 30, 2021 ​ September 30, 2022 ​ September 30, 2021 ​ Total revenues (net interest income plus noninterest income) $ 380,736 $ 1,200,879 $ 1,139,741 ​ Net interest income ​ $ 289,117 ​ $ 945,790 ​ $ 865,671 ​ Net adjusted income available to the common shareholder ​ $ 140,076 ​ $ 380,588 ​ $ 401,853 ​ EPS - basic ​ $ 1.81 ​ $ 5.02 ​ $ 5.15 ​ EPS - diluted ​ $ 1.80 ​ $ 4.98 ​ $ 5.12 ​

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2022
Investment Securities
Schedule of amortized cost and fair value of investment securities held to maturity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Gross ​ ​ ​ ​ Amortized ​ Unrealized ​ Unrealized ​ Fair (Dollars in thousands) Cost Gains Losses Value September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 197,261 ​ $ — ​ $ (30,091) ​ $ 167,170 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,632,761 ​ ​ — ​ ​ (267,505) ​ ​ 1,365,256 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 483,436 ​ ​ 691 ​ ​ (64,602) ​ ​ 419,525 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 366,227 ​ ​ — ​ ​ (66,366) ​ ​ 299,861 ​ Small Business Administration loan-backed securities ​ ​ 58,493 ​ ​ — ​ ​ (11,143) ​ ​ 47,350 ​ ​ ​ $ 2,738,178 ​ $ 691 ​ $ (439,707) ​ $ 2,299,162 ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 112,913 ​ $ — ​ $ (2,627) ​ $ 110,286 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,120,104 ​ ​ 14 ​ ​ (24,278) ​ ​ 1,095,840 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 174,178 ​ ​ — ​ ​ (4,937) ​ ​ 169,241 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 350,116 ​ ​ 304 ​ ​ (8,021) ​ ​ 342,399 ​ Small Business Administration loan-backed securities ​ ​ 62,590 ​ ​ — ​ ​ (2,292) ​ ​ 60,298 ​ ​ ​ $ 1,819,901 ​ $ 318 ​ $ (42,155) ​ $ 1,778,064 ​
Schedule of amortized cost and fair value of investment securities available for sale	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ Amortized ​ Unrealized ​ Unrealized ​ Fair (Dollars in thousands) Cost Gains Losses Value September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasuries ​ $ 271,783 ​ $ — ​ $ (7,358) ​ $ 264,425 ​ U.S. Government agencies ​ ​ 245,943 ​ ​ — ​ ​ (27,320) ​ ​ 218,623 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ 2,048,537 ​ — ​ (318,470) ​ 1,730,067 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 729,712 ​ ​ 6 ​ ​ (101,906) ​ ​ 627,812 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,224,869 ​ ​ 2,551 ​ ​ (199,644) ​ ​ 1,027,776 ​ State and municipal obligations ​ 1,256,045 ​ 23 ​ (252,750) ​ 1,003,318 ​ Small Business Administration loan-backed securities ​ 507,412 ​ 546 ​ (43,722) ​ 464,236 ​ Corporate securities ​ ​ 35,595 ​ ​ 10 ​ ​ (2,252) ​ ​ 33,353 ​ ​ ​ $ 6,319,896 ​ $ 3,136 ​ $ (953,422) ​ $ 5,369,610 ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 98,882 ​ $ — ​ $ (1,765) ​ $ 97,117 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,851,700 ​ 5,324 ​ (25,985) ​ 1,831,039 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 730,949 ​ ​ 5,957 ​ ​ (10,911) ​ ​ 725,995 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,220,233 ​ ​ 5,438 ​ ​ (18,430) ​ ​ 1,207,241 ​ State and municipal obligations ​ ​ 798,211 ​ 16,697 ​ (2,219) ​ 812,689 ​ Small Business Administration loan-backed securities ​ 502,812 ​ 2,330 ​ (4,479) ​ 500,663 ​ Corporate securities ​ 18,509 ​ ​ 234 ​ ​ (9) ​ ​ 18,734 ​ ​ ​ $ 5,221,296 ​ $ 35,980 ​ $ (63,798) ​ $ 5,193,478 ​
Schedule of amortized cost and carrying value of other investment securities	​ ​ ​ ​ ​ ​ ​ Carrying (Dollars in thousands) Value September 30, 2022: ​ ​ ​ ​ Federal Home Loan Bank stock ​ $ 15,095 ​ Federal Reserve Bank stock ​ ​ 150,261 ​ Investment in unconsolidated subsidiaries ​ 3,563 ​ Other nonmarketable investment securities ​ 10,836 ​ ​ ​ $ 179,755 ​ December 31, 2021: ​ ​ ​ ​ Federal Home Loan Bank stock ​ $ 16,283 ​ Federal Reserve Bank stock ​ ​ 129,716 ​ Investment in unconsolidated subsidiaries ​ 3,563 ​ Other nonmarketable investment securities ​ 11,006 ​ ​ ​ $ 160,568 ​
Schedule of amortized cost and fair value of debt and equity securities by contractual maturity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities ​ Securities ​ ​ Held to Maturity ​ Available for Sale ​ ​ Amortized ​ Fair ​ Amortized ​ Fair (Dollars in thousands) Cost Value Cost Value Due in one year or less $ — ​ $ — $ 107,230 $ 105,253 ​ Due after one year through five years ​ 101,152 ​ 92,747 ​ 487,512 ​ 466,754 ​ Due after five years through ten years ​ 359,629 ​ 321,679 ​ 1,149,845 ​ 999,829 ​ Due after ten years ​ 2,277,397 ​ 1,884,736 ​ 4,575,309 ​ 3,797,774 ​ ​ ​ $ 2,738,178 ​ $ 2,299,162 ​ $ 6,319,896 ​ $ 5,369,610 ​
Schedule of securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less Than ​ Twelve Months ​ ​ Twelve Months ​ or More ​ ​ Gross Unrealized ​ Fair ​ Gross Unrealized ​ Fair (Dollars in thousands) Losses Value Losses Value September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities Held to Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 10,903 ​ $ 98,443 ​ $ 19,188 ​ $ 68,727 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 90,161 ​ ​ 627,193 ​ ​ 177,344 ​ ​ 738,063 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 34,942 ​ 265,792 ​ 29,660 ​ 104,370 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 21,199 ​ ​ 113,354 ​ ​ 45,167 ​ ​ 186,507 ​ Small Business Administration loan-backed securities ​ ​ — ​ ​ — ​ ​ 11,143 ​ ​ 47,350 ​ ​ ​ $ 157,205 ​ $ 1,104,782 ​ $ 282,502 ​ $ 1,145,017 ​ Securities Available for Sale ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasuries ​ $ 7,358 ​ $ 264,425 ​ $ — ​ $ — ​ U.S. Government agencies ​ ​ 12,248 ​ ​ 159,395 ​ ​ 15,072 ​ ​ 59,228 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 122,435 ​ ​ 874,957 ​ ​ 196,035 ​ ​ 854,926 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 35,684 ​ 368,713 ​ 66,222 ​ 257,017 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ 66,849 ​ ​ 463,425 ​ ​ 132,795 ​ ​ 528,853 ​ State and municipal obligations ​ 223,328 ​ ​ 917,487 ​ ​ 29,422 ​ ​ 75,275 ​ Small Business Administration loan-backed securities ​ 18,118 ​ ​ 167,715 ​ ​ 25,604 ​ ​ 178,604 ​ Corporate securities ​ ​ 2,252 ​ ​ 28,343 ​ ​ — ​ ​ — ​ ​ ​ $ 488,272 ​ $ 3,244,460 ​ $ 465,150 ​ $ 1,953,903 ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities Held to Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 1,745 ​ $ 86,168 ​ $ 882 ​ $ 24,118 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 18,768 ​ ​ 868,327 ​ ​ 5,510 ​ ​ 184,819 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 4,937 ​ 169,240 ​ — ​ — ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 4,902 ​ ​ 154,963 ​ ​ 3,119 ​ ​ 75,450 ​ Small Business Administration loan-backed securities ​ ​ 1,281 ​ ​ 37,408 ​ ​ 1,011 ​ ​ 22,890 ​ ​ ​ $ 31,633 ​ $ 1,316,106 ​ $ 10,522 ​ $ 307,277 ​ Securities Available for Sale ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ $ 529 ​ $ 73,353 ​ $ 1,236 ​ $ 23,763 ​ Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 17,381 ​ ​ 1,274,934 ​ ​ 8,604 ​ ​ 221,435 ​ Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 10,911 ​ 432,300 ​ — ​ — ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 13,120 ​ ​ 846,581 ​ ​ 5,310 ​ ​ 98,106 ​ State and municipal obligations ​ ​ 1,867 ​ ​ 123,987 ​ ​ 352 ​ ​ 8,579 ​ Small Business Administration loan-backed securities ​ ​ 2,720 ​ ​ 179,168 ​ ​ 1,759 ​ ​ 110,309 ​ Corporate securities ​ 9 ​ ​ 4,991 ​ ​ — ​ ​ — ​ ​ ​ $ 46,537 ​ $ 2,935,314 ​ $ 17,261 ​ $ 462,192 ​
Schedule of trading securities	​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ (Dollars in thousands) 2022 2021 ​ U.S. Government agencies ​ $ 12,017 ​ $ 5,154 ​ Residential mortgage pass-through securities issued or guaranteed by U.S. ​ ​ ​ ​ ​ ​ ​ government agencies or sponsored enterprises ​ ​ 11,556 ​ ​ 6,853 ​ Other residential mortgage issued or guaranteed by U.S. government ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ 5,921 ​ 12,315 ​ Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 3,116 ​ ​ 29,667 ​ State and municipal obligations ​ ​ 18,060 ​ ​ 20,798 ​ Other debt securities ​ ​ 1,270 ​ ​ 2,902 ​ ​ ​ $ 51,940 ​ $ 77,689 ​
Summary of net (losses) gains on trading securities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ (Dollars in thousands) 2022 2021 ​ 2022 ​ 2021 ​ Net gains (losses) on sales transaction ​ $ 76 ​ $ 489 ​ $ (1,544) ​ $ 944 ​ Net mark to mark gains (losses) ​ ​ 465 ​ ​ (693) ​ ​ (1,969) ​ ​ (882) ​ Net gains (losses) on trading securities ​ $ 541 ​ $ (204) ​ $ (3,513) ​ $ 62 ​

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2022
Loans
Summary of loans	The following is a summary of total loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ (Dollars in thousands) 2022 2021 Loans: ​ ​ ​ ​ ​ Construction and land development (1) ​ $ 2,550,552 ​ $ 2,029,216 ​ Commercial non-owner occupied ​ 7,964,470 ​ 6,735,699 ​ Commercial owner occupied real estate ​ 5,426,216 ​ 4,970,116 ​ Consumer owner occupied (2) ​ 4,729,790 ​ 3,638,364 ​ Home equity loans ​ 1,247,330 ​ 1,168,594 ​ Commercial and industrial ​ 4,977,737 ​ 3,761,133 ​ Other income producing property ​ 676,846 ​ 696,804 ​ Consumer ​ 1,259,846 ​ 904,657 ​ Other loans ​ 3,516 ​ 23,583 ​ Total loans ​ 28,836,303 ​ 23,928,166 ​ Less allowance for credit losses ​ (324,398) ​ (301,807) ​ Loans, net ​ $ 28,511,905 ​ $ 23,626,359 ​ (1) Construction and land development includes loans for both commercial construction and development, as well as loans for 1-4 family construction and lot loans. (2) Consumer owner occupied real estate includes loans on both 1-4 family owner occupied property, as well as loans collateralized by 1-4 family owner occupied property with a business intent.
Schedule of purchased loans through acquisition	​ ​ ​ ​ ​ ​ (Dollars in thousands) ​ March 1, 2022 ​ Book value of acquired loans at acquisition ​ $ 137,874 ​ Allowance for credit losses at acquisition ​ (13,758) ​ Non-credit discount at acquisition ​ (5,943) ​ Carrying value or book value of acquired loans at acquisition ​ $ 118,173 ​
Schedule of credit risk profile by risk grade of loans	The following tables present the credit risk profile by risk grade of commercial loans by origination year as of September 30, 2022 and December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ ​ Amortized Cost Basis by Origination Year As of September 30, 2022 ​ 2022 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ Prior ​ Revolving ​ Total Construction and land development ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 584,646 ​ $ 688,921 ​ $ 177,223 ​ $ 77,949 ​ $ 15,244 ​ $ 35,460 ​ $ 71,362 ​ $ 1,650,805 Special mention ​ ​ 561 ​ ​ 2,258 ​ ​ 26 ​ ​ 87 ​ ​ 7,263 ​ ​ 556 ​ ​ — ​ ​ 10,751 Substandard ​ ​ 349 ​ ​ 652 ​ ​ 13 ​ ​ 2,345 ​ ​ — ​ ​ 4,345 ​ ​ — ​ ​ 7,704 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 6 ​ ​ — ​ ​ 6 Total Construction and land development ​ $ 585,556 ​ $ 691,831 ​ $ 177,262 ​ $ 80,381 ​ $ 22,507 ​ $ 40,367 ​ $ 71,362 ​ $ 1,669,266 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial non-owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,768,208 ​ $ 1,912,649 ​ $ 771,153 ​ $ 1,002,194 ​ $ 553,378 ​ $ 1,567,763 ​ $ 128,190 ​ $ 7,703,535 Special mention ​ ​ 14,054 ​ ​ 6,914 ​ ​ 42,841 ​ ​ 6,277 ​ ​ 28,528 ​ ​ 27,283 ​ ​ — ​ ​ 125,897 Substandard ​ ​ 8,890 ​ ​ 24,968 ​ ​ 620 ​ ​ 40,807 ​ ​ 7,966 ​ ​ 49,054 ​ ​ 2,653 ​ ​ 134,958 Doubtful ​ ​ — ​ ​ 1 ​ ​ — ​ ​ 79 ​ ​ — ​ ​ — ​ ​ — ​ ​ 80 Total Commercial non-owner occupied ​ $ 1,791,152 ​ $ 1,944,532 ​ $ 814,614 ​ $ 1,049,357 ​ $ 589,872 ​ $ 1,644,100 ​ $ 130,843 ​ $ 7,964,470 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial Owner Occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 838,791 ​ $ 1,167,238 ​ $ 743,632 ​ $ 737,627 ​ $ 476,813 ​ $ 1,134,341 ​ $ 72,065 ​ $ 5,170,507 Special mention ​ ​ 11,866 ​ ​ 25,820 ​ ​ 6,032 ​ ​ 11,305 ​ ​ 8,907 ​ ​ 60,034 ​ ​ 2,281 ​ ​ 126,245 Substandard ​ ​ 6,545 ​ ​ 21,691 ​ ​ 17,877 ​ ​ 19,406 ​ ​ 6,456 ​ ​ 56,461 ​ ​ 1,003 ​ ​ 129,439 Doubtful ​ ​ — ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — ​ ​ 24 ​ ​ — ​ ​ 25 Total commercial owner occupied ​ $ 857,202 ​ $ 1,214,749 ​ $ 767,542 ​ $ 768,338 ​ $ 492,176 ​ $ 1,250,860 ​ $ 75,349 ​ $ 5,426,216 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,224,618 ​ $ 941,383 ​ $ 577,778 ​ $ 304,904 ​ $ 231,177 ​ $ 373,938 ​ $ 1,186,170 ​ $ 4,839,968 Special mention ​ ​ 5,790 ​ ​ 4,034 ​ ​ 1,013 ​ ​ 2,949 ​ ​ 4,893 ​ ​ 5,266 ​ ​ 22,222 ​ ​ 46,167 Substandard ​ ​ 6,154 ​ ​ 28,588 ​ ​ 2,127 ​ ​ 5,746 ​ ​ 6,965 ​ ​ 7,460 ​ ​ 34,288 ​ ​ 91,328 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 155 ​ ​ 69 ​ ​ 50 ​ ​ 274 Total commercial and industrial ​ $ 1,236,562 ​ $ 974,005 ​ $ 580,918 ​ $ 313,599 ​ $ 243,190 ​ $ 386,733 ​ $ 1,242,730 ​ $ 4,977,737 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other income producing property ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 111,929 ​ $ 96,377 ​ $ 62,628 ​ $ 48,310 ​ $ 52,095 ​ $ 121,664 ​ $ 47,962 ​ $ 540,965 Special mention ​ ​ 968 ​ ​ 1,331 ​ ​ 1,295 ​ ​ 317 ​ ​ 193 ​ ​ 4,463 ​ ​ 173 ​ ​ 8,740 Substandard ​ ​ 648 ​ ​ 472 ​ ​ 1,325 ​ ​ 301 ​ ​ 223 ​ ​ 12,911 ​ ​ 1,342 ​ ​ 17,222 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 5 ​ ​ 131 ​ ​ 136 Total other income producing property ​ $ 113,545 ​ $ 98,180 ​ $ 65,248 ​ $ 48,928 ​ $ 52,511 ​ $ 139,043 ​ $ 49,608 ​ $ 567,063 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 5,281 ​ $ 3,507 ​ $ 1,983 ​ $ 778 ​ $ 72 ​ $ 354 ​ $ 15,331 ​ $ 27,306 Special mention ​ ​ 545 ​ ​ 21 ​ ​ 165 ​ ​ 287 ​ ​ — ​ ​ — ​ ​ 266 ​ ​ 1,284 Substandard ​ ​ — ​ ​ 96 ​ ​ 13 ​ ​ 1,632 ​ ​ — ​ ​ 212 ​ ​ 151 ​ ​ 2,104 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 145 ​ ​ — ​ ​ 145 Total Consumer owner occupied ​ $ 5,826 ​ $ 3,624 ​ $ 2,161 ​ $ 2,697 ​ $ 72 ​ $ 711 ​ $ 15,748 ​ $ 30,839 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 3,516 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 3,516 Special mention ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Substandard ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Total other loans ​ $ 3,516 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 3,516 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Commercial Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 4,536,989 ​ $ 4,810,075 ​ $ 2,334,397 ​ $ 2,171,762 ​ $ 1,328,779 ​ $ 3,233,520 ​ $ 1,521,080 ​ $ 19,936,602 Special mention ​ ​ 33,784 ​ ​ 40,378 ​ ​ 51,372 ​ ​ 21,222 ​ ​ 49,784 ​ ​ 97,602 ​ ​ 24,942 ​ ​ 319,084 Substandard ​ ​ 22,586 ​ ​ 76,467 ​ ​ 21,975 ​ ​ 70,237 ​ ​ 21,610 ​ ​ 130,443 ​ ​ 39,437 ​ ​ 382,755 Doubtful ​ ​ — ​ ​ 1 ​ ​ 1 ​ ​ 79 ​ ​ 155 ​ ​ 249 ​ ​ 181 ​ ​ 666 Total Commercial Loans ​ $ 4,593,359 ​ $ 4,926,921 ​ $ 2,407,745 ​ $ 2,263,300 ​ $ 1,400,328 ​ $ 3,461,814 ​ $ 1,585,640 ​ $ 20,639,107 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ ​ Amortized Cost Basis by Origination Year As of December 31, 2021 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ 2017 ​ Prior ​ Revolving ​ Total Construction and land development ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 570,166 ​ $ 360,488 ​ $ 206,586 ​ $ 38,866 ​ $ 24,728 ​ $ 49,321 ​ $ 76,680 ​ $ 1,326,835 Special mention ​ ​ 2,347 ​ ​ 3,067 ​ ​ 186 ​ ​ — ​ ​ 1,557 ​ ​ 1,715 ​ ​ 487 ​ ​ 9,359 Substandard ​ ​ 960 ​ ​ 210 ​ ​ 2,304 ​ ​ 326 ​ ​ 543 ​ ​ 2,209 ​ ​ — ​ ​ 6,552 Doubtful ​ ​ 1 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 8 ​ ​ — ​ ​ 9 Total Construction and land development ​ $ 573,474 ​ $ 363,765 ​ $ 209,076 ​ $ 39,192 ​ $ 26,828 ​ $ 53,253 ​ $ 77,167 ​ $ 1,342,755 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial non-owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,812,512 ​ $ 798,171 ​ $ 1,061,021 ​ $ 676,803 ​ $ 494,618 ​ $ 1,371,729 ​ $ 102,763 ​ $ 6,317,617 Special mention ​ ​ 16,683 ​ ​ 12,985 ​ ​ 14,138 ​ ​ 36,875 ​ ​ 25,729 ​ ​ 110,109 ​ ​ — ​ ​ 216,519 Substandard ​ ​ 23,035 ​ ​ 160 ​ ​ 64,408 ​ ​ 23,346 ​ ​ 31,952 ​ ​ 56,477 ​ ​ 2,139 ​ ​ 201,517 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 46 ​ ​ — ​ ​ 46 Total Commercial non-owner occupied ​ $ 1,852,230 ​ $ 811,316 ​ $ 1,139,567 ​ $ 737,024 ​ $ 552,299 ​ $ 1,538,361 ​ $ 104,902 ​ $ 6,735,699 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial Owner Occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,182,722 ​ $ 780,339 ​ $ 801,162 ​ $ 549,642 ​ $ 428,163 ​ $ 980,701 ​ $ 69,739 ​ $ 4,792,468 Special mention ​ ​ 9,152 ​ ​ 4,257 ​ ​ 7,331 ​ ​ 10,860 ​ ​ 22,792 ​ ​ 49,083 ​ ​ 115 ​ ​ 103,590 Substandard ​ ​ 7,375 ​ ​ 2,907 ​ ​ 8,587 ​ ​ 2,053 ​ ​ 18,600 ​ ​ 34,431 ​ ​ 80 ​ ​ 74,033 Doubtful ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — ​ ​ — ​ ​ 24 ​ ​ — ​ ​ 25 Total commercial owner occupied ​ $ 1,199,249 ​ $ 787,504 ​ $ 817,080 ​ $ 562,555 ​ $ 469,555 ​ $ 1,064,239 ​ $ 69,934 ​ $ 4,970,116 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,198,849 ​ $ 618,676 ​ $ 360,551 ​ $ 267,772 ​ $ 178,538 ​ $ 219,339 ​ $ 860,134 ​ $ 3,703,859 Special mention ​ ​ 2,759 ​ ​ 1,519 ​ ​ 2,434 ​ ​ 1,268 ​ ​ 3,224 ​ ​ 3,871 ​ ​ 3,281 ​ ​ 18,356 Substandard ​ ​ 738 ​ ​ 5,965 ​ ​ 8,212 ​ ​ 2,653 ​ ​ 3,438 ​ ​ 5,183 ​ ​ 12,701 ​ ​ 38,890 Doubtful ​ ​ — ​ ​ — ​ ​ 5 ​ ​ 3 ​ ​ 2 ​ ​ 16 ​ ​ 2 ​ ​ 28 Total commercial and industrial ​ $ 1,202,346 ​ $ 626,160 ​ $ 371,202 ​ $ 271,696 ​ $ 185,202 ​ $ 228,409 ​ $ 876,118 ​ $ 3,761,133 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other income producing property ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 105,533 ​ $ 73,583 ​ $ 67,173 ​ $ 76,971 ​ $ 56,343 ​ $ 142,183 ​ $ 56,190 ​ $ 577,976 Special mention ​ ​ 1,580 ​ ​ 1,851 ​ ​ 1,063 ​ ​ 232 ​ ​ 1,381 ​ ​ 13,526 ​ ​ 424 ​ ​ 20,057 Substandard ​ ​ 1,304 ​ ​ 482 ​ ​ 298 ​ ​ 166 ​ ​ 787 ​ ​ 12,531 ​ ​ 46 ​ ​ 15,614 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 6 ​ ​ — ​ ​ 6 Total other income producing property ​ $ 108,417 ​ $ 75,916 ​ $ 68,534 ​ $ 77,369 ​ $ 58,511 ​ $ 168,246 ​ $ 56,660 ​ $ 613,653 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 3,513 ​ $ 2,874 ​ $ 1,099 ​ $ 85 ​ $ 139 ​ $ 820 ​ $ 16,977 ​ $ 25,507 Special mention ​ ​ 1,219 ​ ​ 180 ​ ​ 2,430 ​ ​ 81 ​ ​ — ​ ​ 3 ​ ​ — ​ ​ 3,913 Substandard ​ ​ — ​ ​ 16 ​ ​ 238 ​ ​ — ​ ​ — ​ ​ 223 ​ ​ — ​ ​ 477 Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ 1 ​ ​ — ​ ​ 145 ​ ​ — ​ ​ 146 Total Consumer owner occupied ​ $ 4,732 ​ $ 3,070 ​ $ 3,767 ​ $ 167 ​ $ 139 ​ $ 1,191 ​ $ 16,977 ​ $ 30,043 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 23,583 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 23,583 Special mention ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Substandard ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Doubtful ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Total other loans ​ $ 23,583 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 23,583 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Commercial Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 4,896,878 ​ $ 2,634,131 ​ $ 2,497,592 ​ $ 1,610,139 ​ $ 1,182,529 ​ $ 2,764,093 ​ $ 1,182,483 ​ $ 16,767,845 Special mention ​ ​ 33,740 ​ ​ 23,859 ​ ​ 27,582 ​ ​ 49,316 ​ ​ 54,683 ​ ​ 178,307 ​ ​ 4,307 ​ ​ 371,794 Substandard ​ ​ 33,412 ​ ​ 9,740 ​ ​ 84,047 ​ ​ 28,544 ​ ​ 55,320 ​ ​ 111,054 ​ ​ 14,966 ​ ​ 337,083 Doubtful ​ ​ 1 ​ ​ 1 ​ ​ 5 ​ ​ 4 ​ ​ 2 ​ ​ 245 ​ ​ 2 ​ ​ 260 Total Commercial Loans ​ $ 4,964,031 ​ $ 2,667,731 ​ $ 2,609,226 ​ $ 1,688,003 ​ $ 1,292,534 ​ $ 3,053,699 ​ $ 1,201,758 ​ $ 17,476,982 For the consumer segment, delinquency of a loan is determined by past due status. Consumer loans are automatically placed on nonaccrual status once the loan is 90 days past due. Construction and land development loans are on 1-4 properties and lots. ​ The following table presents the credit risk profile by past due status of consumer loans by origination year as of September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ Amortized Cost Basis by Origination Year As of September 30, 2022 ​ 2022 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ Prior ​ Revolving ​ Total Consumer owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 1,351,309 ​ $ 1,335,059 ​ $ 650,548 ​ $ 327,852 ​ $ 193,413 ​ $ 824,959 ​ $ 1,227 ​ $ 4,684,367 30 days past due ​ ​ 178 ​ ​ 1,247 ​ ​ 432 ​ ​ 786 ​ ​ 99 ​ ​ 2,753 ​ ​ — ​ ​ 5,495 60 days past due ​ ​ — ​ ​ 240 ​ ​ 462 ​ ​ 314 ​ ​ 194 ​ ​ 1,105 ​ ​ — ​ ​ 2,315 90 days past due ​ ​ — ​ ​ 433 ​ ​ 451 ​ ​ 913 ​ ​ 772 ​ ​ 4,205 ​ ​ — ​ ​ 6,774 Total Consumer owner occupied ​ $ 1,351,487 ​ $ 1,336,979 ​ $ 651,893 ​ $ 329,865 ​ $ 194,478 ​ $ 833,022 ​ $ 1,227 ​ $ 4,698,951 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Home equity loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 4,837 ​ $ 5,303 ​ $ 3,803 ​ $ 2,257 ​ $ 1,881 ​ $ 20,142 ​ $ 1,203,325 ​ $ 1,241,548 30 days past due ​ ​ — ​ ​ — ​ ​ 155 ​ ​ 170 ​ ​ 250 ​ ​ 36 ​ ​ 3,009 ​ ​ 3,620 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ 195 ​ ​ — ​ ​ 313 ​ ​ 347 ​ ​ 855 90 days past due ​ ​ — ​ ​ 60 ​ ​ 40 ​ ​ 54 ​ ​ — ​ ​ 942 ​ ​ 211 ​ ​ 1,307 Total Home equity loans ​ $ 4,837 ​ $ 5,363 ​ $ 3,998 ​ $ 2,676 ​ $ 2,131 ​ $ 21,433 ​ $ 1,206,892 ​ $ 1,247,330 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 327,444 ​ $ 225,458 ​ $ 123,591 ​ $ 94,584 ​ $ 49,018 ​ $ 149,297 ​ $ 258,354 ​ $ 1,227,746 30 days past due ​ ​ 134 ​ ​ 311 ​ ​ 178 ​ ​ 234 ​ ​ 154 ​ ​ 1,325 ​ ​ 16,509 ​ ​ 18,845 60 days past due ​ ​ 154 ​ ​ 85 ​ ​ 37 ​ ​ 10 ​ ​ 110 ​ ​ 891 ​ ​ 9,880 ​ ​ 11,167 90 days past due ​ ​ 1 ​ ​ 21 ​ ​ 20 ​ ​ 25 ​ ​ 35 ​ ​ 1,399 ​ ​ 587 ​ ​ 2,088 Total consumer ​ $ 327,733 ​ $ 225,875 ​ $ 123,826 ​ $ 94,853 ​ $ 49,317 ​ $ 152,912 ​ $ 285,330 ​ $ 1,259,846 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction and land development ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 320,794 ​ $ 446,805 ​ $ 74,247 ​ $ 14,872 ​ $ 7,608 ​ $ 16,011 ​ $ 355 ​ $ 880,692 30 days past due ​ ​ — ​ ​ — ​ ​ 24 ​ ​ 20 ​ ​ 69 ​ ​ 24 ​ ​ — ​ ​ 137 60 days past due ​ ​ — ​ ​ — ​ ​ 300 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 300 90 days past due ​ ​ — ​ ​ — ​ ​ 157 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 157 Total Construction and land development ​ $ 320,794 ​ $ 446,805 ​ $ 74,728 ​ $ 14,892 ​ $ 7,677 ​ $ 16,035 ​ $ 355 ​ $ 881,286 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other income producing property ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 32,433 ​ $ 21,664 ​ $ 4,989 ​ $ 2,819 ​ $ 4,580 ​ $ 42,373 ​ $ 634 ​ $ 109,492 30 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 165 ​ ​ — ​ ​ 165 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — 90 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 126 ​ ​ — ​ ​ 126 Total other income producing property ​ $ 32,433 ​ $ 21,664 ​ $ 4,989 ​ $ 2,819 ​ $ 4,580 ​ $ 42,664 ​ $ 634 ​ $ 109,783 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Consumer Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 2,036,817 ​ $ 2,034,289 ​ $ 857,178 ​ $ 442,384 ​ $ 256,500 ​ $ 1,052,782 ​ $ 1,463,895 ​ $ 8,143,845 30 days past due ​ ​ 312 ​ ​ 1,558 ​ ​ 789 ​ ​ 1,210 ​ ​ 572 ​ ​ 4,303 ​ ​ 19,518 ​ ​ 28,262 60 days past due ​ ​ 154 ​ ​ 325 ​ ​ 799 ​ ​ 519 ​ ​ 304 ​ ​ 2,309 ​ ​ 10,227 ​ ​ 14,637 90 days past due ​ ​ 1 ​ ​ 514 ​ ​ 668 ​ ​ 992 ​ ​ 807 ​ ​ 6,672 ​ ​ 798 ​ ​ 10,452 Total Consumer Loans ​ $ 2,037,284 ​ $ 2,036,686 ​ $ 859,434 ​ $ 445,105 ​ $ 258,183 ​ $ 1,066,066 ​ $ 1,494,438 ​ $ 8,197,196 The following table presents total loans by origination year as of September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ Amortized Cost Basis by Origination Year As of September 30, 2022 ​ 2022 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ Prior ​ Revolving ​ Total Total Loans ​ $ 6,630,643 ​ $ 6,963,607 ​ $ 3,267,179 ​ $ 2,708,405 ​ $ 1,658,511 ​ $ 4,527,880 ​ $ 3,080,078 ​ $ 28,836,303 ​ The following table presents the credit risk profile by past due status of consumer loans by origination year as of December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ Amortized Cost Basis by Origination Year As of December 31, 2021 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ 2017 ​ Prior ​ Revolving ​ Total Consumer owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 1,192,449 ​ $ 710,828 ​ $ 405,138 ​ $ 246,487 ​ $ 228,876 ​ $ 810,605 ​ $ 4 ​ $ 3,594,387 30 days past due ​ ​ 354 ​ ​ 666 ​ ​ 234 ​ ​ 472 ​ ​ 1,068 ​ ​ 2,230 ​ ​ — ​ ​ 5,024 60 days past due ​ ​ — ​ ​ 330 ​ ​ 218 ​ ​ 254 ​ ​ 111 ​ ​ 928 ​ ​ — ​ ​ 1,841 90 days past due ​ ​ 235 ​ ​ 574 ​ ​ 691 ​ ​ 549 ​ ​ 274 ​ ​ 4,746 ​ ​ — ​ ​ 7,069 Total Consumer owner occupied ​ $ 1,193,038 ​ $ 712,398 ​ $ 406,281 ​ $ 247,762 ​ $ 230,329 ​ $ 818,509 ​ $ 4 ​ $ 3,608,321 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Home equity loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 7,128 ​ $ 5,648 ​ $ 4,745 ​ $ 2,180 ​ $ 993 ​ $ 24,716 ​ $ 1,116,621 ​ $ 1,162,031 30 days past due ​ ​ 6 ​ ​ 49 ​ ​ 68 ​ ​ 71 ​ ​ 24 ​ ​ 491 ​ ​ 2,200 ​ ​ 2,909 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 603 ​ ​ 339 ​ ​ 942 90 days past due ​ ​ 75 ​ ​ 65 ​ ​ 172 ​ ​ 180 ​ ​ 22 ​ ​ 1,548 ​ ​ 650 ​ ​ 2,712 Total Home equity loans ​ $ 7,209 ​ $ 5,762 ​ $ 4,985 ​ $ 2,431 ​ $ 1,039 ​ $ 27,358 ​ $ 1,119,810 ​ $ 1,168,594 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 298,779 ​ $ 169,443 ​ $ 127,757 ​ $ 69,892 ​ $ 36,304 ​ $ 151,948 ​ $ 44,864 ​ $ 898,987 30 days past due ​ ​ 229 ​ ​ 364 ​ ​ 208 ​ ​ 191 ​ ​ 132 ​ ​ 1,570 ​ ​ 137 ​ ​ 2,831 60 days past due ​ ​ 145 ​ ​ 82 ​ ​ 90 ​ ​ 124 ​ ​ 90 ​ ​ 658 ​ ​ 17 ​ ​ 1,206 90 days past due ​ ​ 74 ​ ​ 121 ​ ​ 181 ​ ​ 109 ​ ​ 29 ​ ​ 1,119 ​ ​ — ​ ​ 1,633 Total consumer ​ $ 299,227 ​ $ 170,010 ​ $ 128,236 ​ $ 70,316 ​ $ 36,555 ​ $ 155,295 ​ $ 45,018 ​ $ 904,657 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction and land development ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 411,728 ​ $ 204,368 ​ $ 33,965 ​ $ 13,429 ​ $ 8,484 ​ $ 14,185 ​ $ 162 ​ $ 686,321 30 days past due ​ ​ — ​ ​ 24 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 24 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 12 ​ ​ — ​ ​ 12 90 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 104 ​ ​ — ​ ​ 104 Total Construction and land development ​ $ 411,728 ​ $ 204,392 ​ $ 33,965 ​ $ 13,429 ​ $ 8,484 ​ $ 14,301 ​ $ 162 ​ $ 686,461 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other income producing property ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 22,131 ​ $ 5,620 ​ $ 4,906 ​ $ 4,977 ​ $ 6,303 ​ $ 37,575 ​ $ 1,379 ​ $ 82,891 30 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 90 ​ ​ — ​ ​ 90 60 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 156 ​ ​ — ​ ​ 156 90 days past due ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 14 ​ ​ — ​ ​ 14 Total other income producing property ​ $ 22,131 ​ $ 5,620 ​ $ 4,906 ​ $ 4,977 ​ $ 6,303 ​ $ 37,835 ​ $ 1,379 ​ $ 83,151 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Consumer Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days past due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ 1,947,911 ​ $ 1,095,907 ​ $ 576,511 ​ $ 336,965 ​ $ 280,960 ​ $ 1,039,029 ​ $ 1,147,334 ​ $ 6,424,617 30 days past due ​ ​ 589 ​ ​ 1,103 ​ ​ 510 ​ ​ 734 ​ ​ 1,224 ​ ​ 4,381 ​ ​ 2,337 ​ ​ 10,878 60 days past due ​ ​ 145 ​ ​ 412 ​ ​ 308 ​ ​ 378 ​ ​ 201 ​ ​ 2,357 ​ ​ 356 ​ ​ 4,157 90 days past due ​ ​ 384 ​ ​ 760 ​ ​ 1,044 ​ ​ 838 ​ ​ 325 ​ ​ 7,531 ​ ​ 650 ​ ​ 11,532 Total Consumer Loans ​ $ 1,949,029 ​ $ 1,098,182 ​ $ 578,373 ​ $ 338,915 ​ $ 282,710 ​ $ 1,053,298 ​ $ 1,150,677 ​ $ 6,451,184 The following table presents total loans by origination year as of December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans (Dollars in thousands) ​ Amortized Cost Basis by Origination Year As of December 31, 2021 ​ 2021 ​ 2020 ​ 2019 ​ 2018 ​ 2017 ​ Prior ​ Revolving ​ Total Total Loans ​ $ 6,913,060 ​ $ 3,765,913 ​ $ 3,187,599 ​ $ 2,026,918 ​ $ 1,575,244 ​ $ 4,106,997 ​ $ 2,352,435 ​ $ 23,928,166
Aging analysis of past due loans (includes nonaccrual loans), segregated by class of loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30 - 59 Days 60 - 89 Days 90+ Days Total ​ Non- ​ Total (Dollars in thousands) ​ Past Due ​ Past Due ​ Past Due ​ Past Due ​ Current ​ Accruing ​ Loans September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction and land development ​ $ 843 ​ $ 464 ​ $ 21 ​ $ 1,328 ​ $ 2,548,764 ​ $ 460 ​ $ 2,550,552 Commercial non-owner occupied ​ 10,035 ​ 586 ​ — ​ 10,621 ​ 7,932,535 ​ 21,314 ​ 7,964,470 Commercial owner occupied ​ 2,901 ​ ​ 1,318 ​ 294 ​ 4,513 ​ 5,390,789 ​ 30,914 ​ 5,426,216 Consumer owner occupied ​ 4,740 ​ 368 ​ — ​ 5,108 ​ 4,707,496 ​ 17,186 ​ 4,729,790 Home equity loans ​ 3,104 ​ 659 ​ — ​ 3,763 ​ 1,237,245 ​ 6,322 ​ 1,247,330 Commercial and industrial ​ 29,527 ​ 9,036 ​ 3,211 ​ 41,774 ​ 4,922,124 ​ 13,839 ​ 4,977,737 Other income producing property ​ 2,191 ​ 1,110 ​ 262 ​ 3,563 ​ 670,821 ​ 2,462 ​ 676,846 Consumer ​ 18,488 ​ 10,963 ​ — ​ 29,451 ​ 1,226,652 ​ 3,743 ​ 1,259,846 Other loans ​ — ​ — ​ — ​ — ​ 3,516 ​ — ​ 3,516 ​ ​ $ 71,829 ​ $ 24,504 ​ $ 3,788 ​ $ 100,121 ​ $ 28,639,942 ​ $ 96,240 ​ $ 28,836,303 December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction and land development ​ $ 1,176 ​ $ 59 ​ $ 43 ​ $ 1,278 ​ $ 2,026,371 ​ $ 1,567 ​ $ 2,029,216 Commercial non-owner occupied ​ 3,591 ​ 2,110 ​ 96 ​ 5,797 ​ 6,709,993 ​ 19,909 ​ 6,735,699 Commercial owner occupied ​ 2,756 ​ ​ 1,732 ​ 626 ​ 5,114 ​ 4,950,470 ​ 14,532 ​ 4,970,116 Consumer owner occupied ​ ​ 4,046 ​ 533 ​ — ​ 4,579 ​ 3,615,602 ​ 18,183 ​ 3,638,364 Home equity loans ​ 2,565 ​ 913 ​ — ​ 3,478 ​ 1,158,861 ​ 6,255 ​ 1,168,594 Commercial and industrial ​ 50,451 ​ 26,639 ​ 3,991 ​ 81,081 ​ 3,672,611 ​ 7,441 ​ 3,761,133 Other income producing property ​ 879 ​ 424 ​ 106 ​ 1,409 ​ 691,320 ​ 4,075 ​ 696,804 Consumer ​ 2,672 ​ 840 ​ 1 ​ 3,513 ​ 897,688 ​ 3,456 ​ 904,657 Other loans ​ — ​ — ​ — ​ — ​ 23,583 ​ — ​ 23,583 ​ ​ $ 68,136 ​ $ 33,250 ​ $ 4,863 ​ $ 106,249 ​ $ 23,746,499 ​ $ 75,418 ​ $ 23,928,166
Summary of information pertaining to nonaccrual loans by class	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ Greater than ​ Non-accrual ​ December 31, ​ ​ (Dollars in thousands) ​ 2022 ​ 90 Days Accruing (1) with no allowance (1) 2021 Construction and land development ​ $ 460 ​ $ 21 ​ $ 145 ​ $ 1,567 ​ ​ Commercial non-owner occupied ​ 21,314 ​ ​ — ​ 6,574 ​ 19,909 ​ ​ Commercial owner occupied real estate ​ 30,914 ​ ​ 294 ​ 15,578 ​ 14,532 ​ ​ Consumer owner occupied ​ 17,186 ​ ​ — ​ — ​ 18,183 ​ ​ Home equity loans ​ 6,322 ​ ​ — ​ 1,597 ​ 6,255 ​ ​ Commercial and industrial ​ 13,839 ​ ​ 3,211 ​ 5,796 ​ 7,441 ​ ​ Other income producing property ​ 2,462 ​ ​ 262 ​ — ​ 4,075 ​ ​ Consumer ​ 3,743 ​ ​ — ​ — ​ 3,456 ​ ​ Total loans on nonaccrual status ​ $ 96,240 ​ $ 3,788 ​ $ 29,690 ​ $ 75,418 ​ ​ (1) Greater than 90 days accruing and non-accrual with no allowance loans at September 30, 2022.
Summary of collateral dependent loans, by type of collateral	The following is a summary of collateral dependent loans, by type of collateral, and the extent to which they are collateralized during the period: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ Collateral ​ ​ December 31, ​ Collateral ​ ​ (Dollars in thousands) ​ 2022 Coverage % ​ 2021 Coverage % ​ Commercial owner occupied real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Church ​ $ — ​ $ — ​ ​ $ 1,953 ​ $ 2,308 118% ​ Other ​ ​ 15,578 ​ ​ 23,135 149% ​ ​ 4,656 ​ ​ 12,200 262% ​ Commercial non-owner occupied real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Hotel ​ ​ — ​ ​ — ​ ​ ​ 1,822 ​ ​ 4,100 225% ​ Other ​ ​ 6,574 ​ ​ 10,900 166% ​ ​ 6,949 ​ ​ 9,630 139% ​ Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other ​ ​ 5,163 ​ ​ 5,446 105% ​ ​ — ​ ​ — ​ ​ Home equity loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential 1-4 family dwelling ​ ​ 1,552 ​ ​ 1,671 108% ​ ​ — ​ ​ — ​ ​ Total collateral dependent loans ​ $ 28,867 ​ $ 41,152 ​ ​ $ 15,380 ​ $ 28,238 ​ ​
Schedule of restructured loans segregated by class and type of concession	The following tables present loans designated as TDRs segregated by class and type of concession that were restructured during the three months ended September 30, 2022 and during the 30, 2022 and 2021. There were ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ ​ 2022 ​ 2021 ​ ​ ​ ​ Pre-Modification ​ Post-Modification ​ ​ ​ Pre-Modification ​ Post-Modification ​ ​ Number ​ Amortized ​ Amortized ​ Number ​ Amortized ​ Amortized (Dollars in thousands) ​ of loans ​ Cost ​ Cost ​ of loans ​ Cost ​ Cost Interest rate modification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial non-owner occupied ​ 2 ​ $ 2,321 ​ $ 2,321 ​ — ​ $ — ​ $ — Commercial owner occupied ​ 2 ​ ​ 2,629 ​ ​ 2,629 ​ — ​ ​ — ​ ​ — Commercial and industrial ​ 1 ​ ​ 535 ​ ​ 535 ​ — ​ ​ — ​ ​ — Total interest rate modifications ​ 5 ​ $ 5,485 ​ $ 5,485 ​ — ​ $ — ​ $ — Term modification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial non-owner occupied ​ 1 ​ $ 375 ​ $ 375 ​ — ​ $ — ​ $ — Commercial owner occupied ​ 2 ​ ​ 1,042 ​ ​ 1,042 ​ — ​ ​ — ​ ​ — Commercial and industrial ​ 3 ​ ​ 3,097 ​ ​ 3,097 ​ — ​ ​ — ​ ​ — Total term modifications ​ 6 ​ ​ 4,514 ​ ​ 4,514 ​ — ​ ​ — ​ ​ — ​ ​ 11 ​ $ 9,999 ​ $ 9,999 ​ — ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, ​ ​ 2022 ​ 2021 ​ ​ ​ ​ Pre-Modification ​ Post-Modification ​ ​ ​ Pre-Modification ​ Post-Modification ​ ​ Number ​ Amortized ​ Amortized ​ Number ​ Amortized ​ Amortized (Dollars in thousands) ​ of loans ​ Cost ​ Cost ​ of loans ​ Cost ​ Cost Interest rate modification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial non-owner occupied ​ 3 ​ $ 2,498 ​ $ 2,498 ​ — ​ $ — ​ $ — Commercial owner occupied ​ 3 ​ ​ 2,855 ​ ​ 2,855 ​ — ​ ​ — ​ ​ — Consumer owner occupied ​ 1 ​ ​ 96 ​ ​ 96 ​ — ​ ​ — ​ ​ — Commercial and industrial ​ 5 ​ ​ 905 ​ ​ 905 ​ — ​ ​ — ​ ​ — Other income producing property ​ 2 ​ ​ 111 ​ ​ 111 ​ 1 ​ ​ 212 ​ ​ 212 Total interest rate modifications ​ 14 ​ $ 6,465 ​ $ 6,465 ​ 1 ​ $ 212 ​ $ 212 Term modification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction and land development ​ 1 ​ $ 133 ​ $ 133 ​ — ​ $ — ​ $ — Commercial non-owner occupied ​ 1 ​ ​ 375 ​ ​ 375 ​ — ​ ​ — ​ ​ — Commercial owner occupied ​ 3 ​ ​ 1,451 ​ ​ 1,451 ​ — ​ ​ — ​ ​ — Commercial and industrial ​ 3 ​ ​ 3,097 ​ ​ 3,097 ​ 1 ​ ​ 38 ​ ​ 38 Total term modifications ​ 8 ​ $ 5,056 ​ $ 5,056 ​ 1 ​ $ 38 ​ $ 38 ​ ​ 22 ​ $ 11,521 ​ $ 11,521 ​ 2 ​ $ 250 ​ $ 250
Schedule of changes in status of loans restructured within the previous 12 months	The following table presents the changes in status of loans restructured within the previous 12 months as of September 30, 2022 by type of concession. There were ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Paying Under ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Restructured Terms ​ Converted to Nonaccrual ​ Foreclosures and Defaults ​ ​ Number ​ Amortized ​ Number ​ Amortized ​ Number ​ Amortized (Dollars in thousands) ​ of Loans ​ Cost ​ of Loans ​ Cost ​ of Loans ​ Cost Interest rate modification ​ 16 ​ $ 6,747 ​ — ​ $ — ​ — ​ $ — Term modification ​ 9 ​ ​ 5,354 ​ — ​ ​ — ​ — ​ ​ — ​ ​ 25 ​ $ 12,101 ​ — ​ $ — ​ — ​ $ —

Allowance for Credit Losses (_2

Allowance for Credit Losses (ACL) (Tables)	9 Months Ended
	Sep. 30, 2022
Allowance for Credit Losses (ACL)
Schedule of changes in allowance for loan losses	The following tables present a disaggregated analysis of activity in the allowance for credit losses. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Residential ​ ​ ​ Residential ​ Other ​ ​ ​ ​ ​ ​ ​ CRE Owner ​ Non-Owner ​ ​ ​ ​ ​ (Dollars in thousands) ​ Mortgage Sr. ​ Mortgage Jr. ​ HELOC ​ Construction ​ C&D ​ Consumer ​ Multifamily ​ Municipal ​ Occupied ​ Occupied CRE ​ C & I ​ Total Three Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at end of period June 30, 2022 ​ $ 55,707 ​ $ 533 ​ $ 16,918 ​ $ 7,565 ​ $ 27,730 ​ $ 24,752 ​ $ 2,458 ​ $ 703 ​ $ 64,688 ​ $ 85,169 ​ $ 33,485 ​ $ 319,708 Charge-offs ​ (50) ​ — ​ (23) ​ — ​ — ​ (2,742) ​ — ​ — ​ (1,353) ​ ​ (8) ​ ​ (2,950) ​ (7,126) Recoveries ​ 376 ​ 30 ​ 3,151 ​ 2 ​ 280 ​ 573 ​ — ​ — ​ 569 ​ ​ 29 ​ ​ 3,378 ​ 8,388 Net (charge offs) recoveries ​ ​ 326 ​ 30 ​ 3,128 ​ 2 ​ 280 ​ (2,169) ​ — ​ — ​ (784) ​ ​ 21 ​ ​ 428 ​ ​ 1,262 (Recovery) provision (1) ​ 11,987 ​ (40) ​ (3,980) ​ 763 ​ 3,798 ​ 4,221 ​ 666 ​ (1) ​ (9,745) ​ ​ (8,937) ​ ​ 4,696 ​ 3,428 Balance at end of period September 30, 2022 ​ $ 68,020 ​ $ 523 ​ $ 16,066 ​ $ 8,330 ​ $ 31,808 ​ $ 26,804 ​ $ 3,124 ​ $ 702 ​ $ 54,159 ​ $ 76,253 ​ $ 38,609 ​ $ 324,398 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative allowance ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Collectively evaluated ​ $ 67,765 ​ $ 523 ​ $ 13,402 ​ $ 8,330 ​ $ 31,524 ​ $ 26,804 ​ $ 3,124 ​ $ 702 ​ $ 46,443 ​ $ 74,978 ​ $ 35,650 ​ $ 309,245 Individually evaluated ​ ​ 233 ​ ​ — ​ ​ 2,654 ​ ​ — ​ ​ 284 ​ ​ — ​ ​ — ​ ​ — ​ ​ 7,102 ​ ​ 765 ​ ​ 2,240 ​ ​ 13,278 Total quantitative allowance ​ ​ 67,998 ​ ​ 523 ​ ​ 16,056 ​ ​ 8,330 ​ ​ 31,808 ​ ​ 26,804 ​ ​ 3,124 ​ ​ 702 ​ ​ 53,545 ​ ​ 75,743 ​ ​ 37,890 ​ ​ 322,523 Qualitative allowance ​ ​ 22 ​ ​ — ​ ​ 10 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 614 ​ ​ 510 ​ ​ 719 ​ ​ 1,875 Balance at end of period September 30, 2022 ​ $ 68,020 ​ $ 523 ​ $ 16,066 ​ $ 8,330 ​ $ 31,808 ​ $ 26,804 ​ $ 3,124 ​ $ 702 ​ $ 54,159 ​ $ 76,253 ​ $ 38,609 ​ $ 324,398 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at end of period June 30, 2021 ​ $ 55,820 ​ $ 825 ​ $ 14,550 ​ $ 4,488 ​ $ 45,488 ​ $ 25,697 ​ $ 5,883 ​ $ 1,063 ​ $ 75,492 ​ $ 90,404 ​ $ 30,691 ​ $ 350,401 Charge-offs ​ (15) ​ — ​ (149) ​ — ​ — ​ (2,366) ​ — ​ — ​ (4) ​ ​ (241) ​ ​ (1,072) ​ (3,847) Recoveries ​ 332 ​ 48 ​ 720 ​ 2 ​ 748 ​ 577 ​ — ​ — ​ 332 ​ ​ 173 ​ ​ 869 ​ 3,801 Net (charge offs) recoveries ​ ​ 317 ​ ​ 48 ​ ​ 571 ​ ​ 2 ​ ​ 748 ​ ​ (1,789) ​ ​ — ​ ​ — ​ ​ 328 ​ ​ (68) ​ ​ (203) ​ ​ (46) Provision (recovery) (1) ​ (4,587) ​ (174) ​ (204) ​ 295 ​ (10,337) ​ 332 ​ (1,299) ​ (554) ​ (10,611) ​ ​ (7,458) ​ ​ (1,614) ​ (36,211) Balance at end of period September 30, 2021 ​ $ 51,550 ​ $ 699 ​ $ 14,917 ​ $ 4,785 ​ $ 35,899 ​ $ 24,240 ​ $ 4,584 ​ $ 509 ​ $ 65,209 ​ $ 82,878 ​ $ 28,874 ​ $ 314,144 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative allowance ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Collectively evaluated ​ $ 48,411 ​ $ 699 ​ $ 13,307 ​ $ 4,756 ​ $ 35,893 ​ $ 21,509 ​ $ 4,584 ​ $ 509 ​ $ 62,969 ​ $ 79,302 ​ $ 25,789 ​ $ 297,728 Individually evaluated ​ ​ 77 ​ ​ — ​ ​ 959 ​ ​ — ​ ​ 6 ​ ​ — ​ ​ — ​ ​ — ​ ​ 377 ​ ​ — ​ ​ 307 ​ ​ 1,726 Total quantitative allowance ​ ​ 48,488 ​ ​ 699 ​ ​ 14,266 ​ ​ 4,756 ​ ​ 35,899 ​ ​ 21,509 ​ ​ 4,584 ​ ​ 509 ​ ​ 63,346 ​ ​ 79,302 ​ ​ 26,096 ​ ​ 299,454 Qualitative allowance ​ ​ 3,062 ​ ​ — ​ ​ 651 ​ ​ 29 ​ ​ — ​ ​ 2,731 ​ ​ — ​ ​ — ​ ​ 1,863 ​ ​ 3,576 ​ ​ 2,778 ​ ​ 14,690 Balance at end of period September 30, 2021 ​ $ 51,550 ​ $ 699 ​ $ 14,917 ​ $ 4,785 ​ $ 35,899 ​ $ 24,240 ​ $ 4,584 ​ $ 509 ​ $ 65,209 ​ $ 82,878 ​ $ 28,874 ​ $ 314,144 (1) A provision for credit losses of $20.0 million was recorded during the third quarter of 2022, compared to a negative provision (recovery) for credit losses of $(2.7) million recorded during the third quarter of 2021 for the allowance for credit losses for unfunded commitments that is not included in the above table. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Residential ​ ​ ​ Residential ​ Other ​ ​ ​ ​ ​ ​ ​ CRE Owner ​ Non Owner ​ ​ ​ ​ ​ (Dollars in thousands) ​ Mortgage Sr. ​ Mortgage Jr. ​ HELOC ​ Construction ​ C&D ​ Consumer ​ Multifamily ​ Municipal ​ Occupied ​ Occupied CRE ​ C & I ​ Total Nine Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at end of period December 31, 2021 ​ $ 47,036 ​ $ 611 ​ $ 13,325 ​ $ 4,997 ​ $ 37,593 ​ $ 23,149 ​ $ 4,921 ​ $ 565 ​ $ 61,794 ​ $ 79,649 ​ $ 28,167 ​ $ 301,807 Initial Allowance for PCD loans acquired during period ​ ​ 811 ​ ​ — ​ ​ — ​ ​ — ​ ​ 86 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,409 ​ ​ — ​ ​ 10,452 ​ ​ 13,758 Initial Allowance for Non PCD loans acquired during period ​ ​ 352 ​ ​ 26 ​ ​ 132 ​ ​ 2 ​ ​ 1,887 ​ ​ 51 ​ ​ 426 ​ ​ — ​ ​ 2,519 ​ ​ 2,697 ​ ​ 5,605 ​ ​ 13,697 Charge-offs ​ (169) ​ (19) ​ (444) ​ — ​ (4) ​ (7,527) ​ — ​ — ​ (1,802) ​ ​ (368) ​ ​ (8,446) ​ (18,779) Recoveries ​ 1,131 ​ 195 ​ 3,803 ​ 7 ​ 924 ​ 1,765 ​ — ​ — ​ 977 ​ ​ 402 ​ ​ 6,175 ​ 15,379 Net recoveries (charge offs) ​ ​ 962 ​ ​ 176 ​ ​ 3,359 ​ ​ 7 ​ ​ 920 ​ ​ (5,762) ​ ​ — ​ ​ — ​ ​ (825) ​ ​ 34 ​ ​ (2,271) ​ ​ (3,400) Provision (benefit) (1) ​ 18,859 ​ (290) ​ (750) ​ 3,324 ​ (8,678) ​ 9,366 ​ (2,223) ​ 137 ​ (11,738) ​ ​ (6,127) ​ ​ (3,344) ​ (1,464) Balance at end of period September 30, 2022 ​ $ 68,020 ​ $ 523 ​ $ 16,066 ​ $ 8,330 ​ $ 31,808 ​ $ 26,804 ​ $ 3,124 ​ $ 702 ​ $ 54,159 ​ $ 76,253 ​ $ 38,609 ​ $ 324,398 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at end of period December 31, 2020 ​ $ 63,561 ​ $ 1,238 ​ $ 16,698 ​ $ 4,914 ​ $ 67,197 ​ $ 26,562 ​ $ 7,887 ​ $ 1,510 ​ $ 97,104 ​ $ 124,421 ​ $ 46,217 ​ $ 457,309 Charge-offs ​ (204) ​ — ​ (835) ​ — ​ (87) ​ (6,001) ​ — ​ — ​ (2,052) ​ ​ (776) ​ ​ (2,928) ​ (12,883) Recoveries ​ 1,103 ​ 131 ​ 1,903 ​ 3 ​ 1,178 ​ 1,618 ​ 3 ​ — ​ 796 ​ ​ 905 ​ ​ 3,104 ​ 10,744 Net charge offs ​ ​ 899 ​ ​ 131 ​ ​ 1,068 ​ ​ 3 ​ ​ 1,091 ​ ​ (4,383) ​ ​ 3 ​ ​ — ​ ​ (1,256) ​ ​ 129 ​ ​ 176 ​ ​ (2,139) Provision (benefit) (1) ​ (12,910) ​ (670) ​ (2,849) ​ (132) ​ (32,389) ​ 2,061 ​ (3,306) ​ (1,001) ​ (30,639) ​ ​ (41,672) ​ ​ (17,519) ​ (141,026) Balance at end of period September 30, 2021 ​ $ 51,550 ​ $ 699 ​ $ 14,917 ​ $ 4,785 ​ $ 35,899 ​ $ 24,240 ​ $ 4,584 ​ $ 509 ​ $ 65,209 ​ $ 82,878 ​ $ 28,874 ​ $ 314,144 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (1) A provision for credit losses of $22.5 million was recorded during the first nine months of 2022, compared to a negative provision (recovery) for credit losses of $(15.1) million during the first nine months of 2021 for the allowance for credit losses for unfunded commitments that is not included in the above table .

Other Real Estate Owned and B_2

Other Real Estate Owned and Bank Premises Held for Sale (Tables)	9 Months Ended
	Sep. 30, 2022
Other Real Estate Owned and Bank Premises Held for Sale
Schedule of information pertaining to OREO and Bank Premises Held for Sale	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Dollars in thousands) ​ OREO ​ Bank Premises Held For Sale ​ Total Balance, December 31, 2021 $ 2,736 ​ $ 9,578 ​ $ 12,314 Additions, net ​ ​ 1,889 ​ ​ 21,003 ​ ​ 22,892 Write-downs ​ ​ (115) ​ ​ (111) ​ ​ (226) Sold ​ ​ (2,350) ​ ​ (5,427) ​ ​ (7,777) Balance, September 30, 2022 ​ $ 2,160 ​ $ 25,043 ​ $ 27,203

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2022
Leases
Schedule of information pertaining to operating leases	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ (Dollars in thousands) ​ September 30, ​ September 30, ​ 2022 2021 2022 2021 Lease Cost Components: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortization of ROU assets - finance leases ​ $ 117 ​ $ 117 ​ $ 350 ​ $ 350 ​ Interest on lease liabilities - finance leases ​ ​ 12 ​ ​ 14 ​ ​ 37 ​ ​ 43 ​ Operating lease cost (cost resulting from lease payments) ​ ​ 4,550 ​ ​ 4,292 ​ ​ 13,419 ​ ​ 12,977 ​ Short-term lease cost ​ ​ 218 ​ ​ 116 ​ ​ 592 ​ ​ 327 ​ Variable lease cost (cost excluded from lease payments) ​ 615 ​ 783 ​ 1,813 ​ 2,073 ​ Total lease cost ​ $ 5,512 ​ $ 5,322 ​ $ 16,211 ​ $ 15,770 ​ Supplemental Cash Flow and Other Information Related to Leases: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Finance lease - operating cash flows ​ $ 12 ​ $ 14 ​ $ 37 ​ $ 43 ​ Finance lease - financing cash flows ​ ​ 109 ​ ​ 107 ​ ​ 325 ​ ​ 320 ​ Operating lease - operating cash flows (fixed payments) ​ ​ 4,356 ​ ​ 4,127 ​ ​ 12,982 ​ ​ 12,440 ​ Operating lease - operating cash flows (net change asset/liability) ​ ​ (3,466) ​ ​ (3,215) ​ ​ (10,313) ​ ​ (9,691) ​ New ROU assets - operating leases ​ ​ — ​ ​ 4,196 ​ ​ 12,616 ​ ​ 5,494 ​ New ROU assets - finance leases ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ Weighted - average remaining lease term (years) - finance leases ​ ​ ​ ​ ​ ​ ​ ​ 5.67 ​ ​ 6.66 ​ Weighted - average remaining lease term (years) - operating leases ​ ​ ​ ​ ​ ​ ​ 10.13 ​ 10.96 ​ Weighted - average discount rate - finance leases ​ ​ ​ ​ ​ ​ ​ ​ 1.7% ​ ​ 1.7% ​ Weighted - average discount rate - operating leases ​ ​ ​ ​ ​ 3.0% ​ 3.3% ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating lease payments due: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2022 (excluding the nine months ended September 30, 2022) ​ ​ ​ ​ ​ ​ ​ $ 4,303 ​ ​ ​ ​ 2023 ​ ​ ​ ​ ​ ​ ​ ​ 16,727 ​ ​ ​ ​ 2024 ​ ​ ​ ​ ​ ​ ​ ​ 15,343 ​ ​ ​ ​ 2025 ​ ​ ​ ​ ​ ​ ​ ​ 13,902 ​ ​ ​ ​ 2026 ​ ​ ​ ​ ​ ​ ​ ​ 13,246 ​ ​ ​ ​ Thereafter ​ ​ ​ ​ ​ ​ ​ ​ 79,764 ​ ​ ​ ​ Total undiscounted cash flows ​ ​ ​ ​ ​ ​ ​ ​ 143,285 ​ ​ ​ ​ Discount on cash flows ​ ​ ​ ​ ​ ​ ​ ​ (22,174) ​ ​ ​ ​ Total operating lease liabilities ​ ​ ​ ​ ​ ​ ​ $ 121,111 ​ ​ ​ ​

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2022
Deposits
Schedule of total deposits	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ (Dollars in thousands) 2022 2021 Non-interest bearing checking ​ $ 13,660,244 ​ $ 11,498,840 ​ Interest-bearing checking ​ 8,741,447 ​ 9,018,987 ​ Savings ​ 3,602,560 ​ 3,350,547 ​ Money market ​ 9,126,058 ​ 8,376,380 ​ Time deposits ​ ​ 2,535,712 ​ ​ 2,810,075 ​ Total deposits ​ $ 37,666,021 ​ $ 35,054,829 ​

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2022
Earnings Per Share
Schedule of computation of basic and diluted earnings per common share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ ​ September 30, ​ September 30, ​ (Dollars and shares in thousands, except for per share amounts) 2022 2021 2022 2021 Basic earnings per common share: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income ​ $ 133,043 ​ $ 122,788 ​ $ 352,547 ​ $ 368,697 ​ Weighted-average basic common shares ​ ​ 75,606 ​ ​ 70,066 ​ ​ 74,185 ​ ​ 70,643 ​ Basic earnings per common share ​ $ 1.76 ​ $ 1.75 ​ $ 4.75 ​ $ 5.22 ​ Diluted earnings per common share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income ​ $ 133,043 ​ $ 122,788 ​ $ 352,547 ​ $ 368,697 ​ Weighted-average basic common shares ​ ​ 75,606 ​ ​ 70,066 ​ ​ 74,185 ​ ​ 70,643 ​ Effect of dilutive securities ​ ​ 576 ​ ​ 510 ​ ​ 606 ​ ​ 465 ​ Weighted-average dilutive shares ​ ​ 76,182 ​ ​ 70,576 ​ ​ 74,791 ​ ​ 71,108 ​ Diluted earnings per common share ​ $ 1.75 ​ $ 1.74 ​ $ 4.71 ​ $ 5.19 ​
Schedule of anti-dilutive securities excluded from computation of diluted earnings per common share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ (Dollars in thousands) 2022 2021 2022 2021 Number of shares ​ ​ ​ ​ ​ 57,169 ​ ​ ​ ​ ​ 57,169 ​ ​ ​ ​ 57,169 ​ ​ ​ ​ ​ 60,546 ​ Range of exercise prices ​ $ 87.30 to $ 91.35 ​ $ 87.30 to $ 91.35 ​ $ 87.30 to $ 91.35 ​ $ 87.30 to $ 91.35 ​

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2022
Share-Based Compensation
Schedule of stock option activity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ ​ ​ ​ ​ ​ ​ Weighted ​ Average ​ Aggregate ​ ​ ​ ​ ​ Average ​ Remaining ​ Intrinsic ​ ​ Shares Price (Yrs.) (000's) Outstanding at January 1, 2022 ​ 185,125 ​ $ 63.03 ​ ​ ​ ​ ​ ​ Assumed stock options and warrants from ACBI merger ​ 23,410 ​ ​ 40.73 ​ ​ ​ ​ ​ ​ Exercised ​ (37,236) ​ 40.78 ​ ​ ​ ​ ​ Expired ​ (2,638) ​ ​ 40.29 ​ ​ ​ ​ ​ Outstanding at September 30, 2022 ​ 168,661 ​ 65.20 ​ 3.31 ​ $ 3,033 ​ Exercisable at September 30, 2022 ​ 168,661 ​ ​ 65.20 ​ 3.31 ​ $ 3,033 ​
Summary of nonvested restricted stock	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted- ​ ​ ​ ​ Average ​ ​ ​ ​ Grant-Date Restricted Stock ​ Shares ​ Fair Value Nonvested at January 1, 2022 3,066 ​ $ 67.31 ​ Assumed restricted stock shares from ACBI merger ​ 84,224 ​ ​ 90.00 ​ Vested (29,220) ​ 89.91 ​ Forfeited (2,816) ​ 90.00 ​ Nonvested at September 30, 2022 55,254 ​ $ 88.79 ​
Summary of nonvested RSUs	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted- ​ ​ ​ ​ Average ​ ​ ​ ​ Grant-Date Restricted Stock Units ​ Shares ​ Fair Value Outstanding at January 1, 2022 948,213 ​ $ 67.01 ​ Assumed restricted stock units from ACBI merger ​ 55,736 ​ ​ 87.94 ​ Granted 333,116 ​ 82.34 ​ Vested ​ (383,352) ​ ​ 66.25 ​ Forfeited ​ (7,287) ​ ​ 84.07 ​ Outstanding at September 30, 2022 946,426 ​ $ 73.81 ​

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2022
Fair Value.
Schedule of recorded amount of assets and liabilities measured at fair value on a recurring basis	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ In Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs (Dollars in thousands) ​ Fair Value ​ (Level 1) ​ (Level 2) ​ (Level 3) September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative financial instruments ​ $ 1,083,803 ​ $ — ​ $ 1,083,803 ​ $ — Loans held for sale ​ 34,477 ​ — ​ 34,477 ​ — Trading securities ​ 51,940 ​ — ​ 51,940 ​ — Securities available for sale: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasuries ​ ​ 264,425 ​ ​ — ​ ​ 264,425 ​ ​ — U.S. Government agencies ​ ​ 218,623 ​ ​ — ​ ​ 218,623 ​ ​ — Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,730,067 ​ ​ — ​ ​ 1,730,067 ​ ​ — Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 627,812 ​ ​ — ​ ​ 627,812 ​ ​ — Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,027,776 ​ ​ — ​ ​ 1,027,776 ​ ​ — State and municipal obligations ​ 1,003,318 ​ — ​ 1,003,318 ​ — Small Business Administration loan-backed securities ​ 464,236 ​ — ​ 464,236 ​ — Corporate securities ​ ​ 33,353 ​ ​ — ​ ​ 33,353 ​ ​ — Total securities available for sale ​ 5,369,610 ​ — ​ 5,369,610 ​ — Mortgage servicing rights ​ 90,459 ​ — ​ — ​ 90,459 SBA servicing assets ​ ​ 6,981 ​ ​ — ​ ​ — ​ ​ 6,981 ​ ​ $ 6,637,270 ​ $ — ​ $ 6,539,830 ​ $ 97,440 Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative financial instruments ​ $ 1,082,948 ​ $ — ​ $ 1,082,948 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative financial instruments ​ $ 414,742 ​ $ — ​ $ 414,742 ​ $ — Loans held for sale ​ 191,723 ​ — ​ 191,723 ​ — Trading securities ​ 77,689 ​ — ​ 77,689 ​ — Securities available for sale: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Government agencies ​ ​ 97,117 ​ ​ — ​ ​ 97,117 ​ ​ — Residential mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,831,039 ​ ​ — ​ ​ 1,831,039 ​ ​ — Residential collateralized mortgage-obligations issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 725,995 ​ ​ — ​ ​ 725,995 ​ ​ — Commercial mortgage-backed securities issued by U.S. government ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ agencies or sponsored enterprises ​ ​ 1,207,241 ​ ​ — ​ ​ 1,207,241 ​ ​ — State and municipal obligations ​ 812,689 ​ — ​ 812,689 ​ — Small Business Administration loan-backed securities ​ 500,663 ​ — ​ 500,663 ​ — Corporate securities ​ 18,734 ​ — ​ 18,734 ​ — Total securities available for sale ​ 5,193,478 ​ — ​ 5,193,478 ​ — Mortgage servicing rights ​ 65,620 ​ — ​ — ​ 65,620 ​ ​ $ 5,943,252 ​ $ — ​ $ 5,877,632 ​ $ 65,620 Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative financial instruments ​ $ 410,137 ​ $ — ​ $ 410,137 ​ $ —
Schedule of reconciliation of the beginning and ending balances of Level 3 assets, comprised of Mortgage Servicing Rights, and liabilities recorded at fair value on a recurring basis	​ ​ ​ ​ ​ ​ ​ ​ ​ (Dollars in thousands) Assets Liabilities Fair value, January 1, 2022 ​ $ 65,620 ​ $ — ​ Servicing assets that resulted from transfers of financial assets ​ 14,617 ​ — ​ Changes in fair value due to valuation inputs or assumptions ​ 18,274 ​ — ​ Changes in fair value due to decay ​ (8,052) ​ — ​ Fair value, September 30, 2022 ​ $ 90,459 ​ $ — ​
Schedule of amounts of assets and liabilities measured at fair value on a nonrecurring basis	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ In Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs (Dollars in thousands) ​ Fair Value ​ (Level 1) ​ (Level 2) ​ (Level 3) September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ OREO ​ $ 2,160 ​ $ — ​ $ — ​ $ 2,160 ​ Bank property held for sale ​ ​ 25,043 ​ ​ — ​ — ​ ​ 25,043 ​ Individually evaluated loans ​ 52,368 ​ — ​ — ​ 52,368 ​ December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ OREO ​ $ 2,736 ​ $ — ​ $ — ​ $ 2,736 ​ Bank property held for sale ​ ​ 9,578 ​ ​ — ​ — ​ ​ 9,578 ​ Individually evaluated loans ​ 20,802 ​ — ​ — ​ 20,802 ​
Schedule of quantitative information about level 3 fair value measurements	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ Valuation Technique Unobservable Input 2022 2021 Nonrecurring measurements: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Individually evaluated loans Discounted appraisals and discounted cash flows Collateral discounts ​ 25 % ​ 9 % OREO and premises held for sale Discounted appraisals Collateral discounts and estimated costs to sell ​ 15 % ​ 24 %
Schedule of estimated fair value, and related carrying amount, of the Company's financial instruments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying Fair ​ ​ ​ ​ ​ ​ (Dollars in thousands) ​ Amount ​ Value ​ Level 1 ​ Level 2 ​ Level 3 September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 2,809,695 ​ $ 2,809,695 ​ $ 2,809,695 ​ $ — ​ $ — ​ Trading securities ​ ​ 51,940 ​ ​ 51,940 ​ ​ — ​ ​ 51,940 ​ ​ — ​ Investment securities ​ 8,287,543 ​ 7,848,527 ​ 179,755 ​ 7,668,772 ​ — ​ Loans held for sale ​ ​ 34,477 ​ ​ 34,477 ​ ​ — ​ ​ 34,477 ​ ​ — ​ Loans, net of allowance for credit losses ​ 28,511,905 ​ 28,271,062 ​ — ​ — ​ 28,271,062 ​ Accrued interest receivable ​ 124,553 ​ 124,553 ​ — ​ 28,508 ​ 96,045 ​ Mortgage servicing rights ​ 90,459 ​ 90,459 ​ — ​ — ​ 90,459 ​ SBA servicing assets ​ ​ 6,981 ​ ​ — ​ ​ — ​ ​ — ​ ​ 6,981 ​ Interest rate swap - non-designated hedge ​ 1,081,768 ​ 1,081,768 ​ — ​ 1,081,768 ​ — ​ Other derivative financial instruments (mortgage banking related) ​ 2,035 ​ 2,035 ​ — ​ 2,035 ​ — ​ Financial liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deposits ​ 37,666,021 ​ 37,578,773 ​ — ​ 37,578,773 ​ — ​ Federal funds purchased and securities sold under agreements to repurchase ​ 557,802 ​ 557,802 ​ — ​ 557,802 ​ — ​ Other borrowings ​ 392,368 ​ 379,992 ​ — ​ 379,992 ​ — ​ Accrued interest payable ​ 6,354 ​ 6,354 ​ — ​ 6,354 ​ — ​ Interest rate swap - non-designated hedge ​ 1,081,267 ​ 1,081,267 ​ — ​ 1,081,267 ​ — ​ Other derivative financial instruments (mortgage banking related) ​ 1,681 ​ 1,681 ​ — ​ 1,681 ​ — ​ Off balance sheet financial instruments: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commitments to extend credit ​ — ​ (92,429) ​ — ​ (92,429) ​ — ​ December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 6,843,147 ​ $ 6,843,147 ​ $ 6,843,147 ​ $ — ​ $ — ​ Trading securities ​ ​ 77,689 ​ ​ 77,689 ​ ​ — ​ ​ 77,689 ​ ​ — ​ Investment securities ​ 7,173,947 ​ 7,132,110 ​ 160,568 ​ 6,971,542 ​ — ​ Loans held for sale ​ ​ 191,723 ​ ​ 191,723 ​ ​ — ​ ​ 191,723 ​ ​ — ​ Loans, net of allowance for credit losses ​ 23,626,359 ​ 23,921,372 ​ — ​ — ​ 23,921,372 ​ Accrued interest receivable ​ 90,069 ​ 90,069 ​ — ​ 19,241 ​ 70,828 ​ Mortgage servicing rights ​ 65,620 ​ 65,620 ​ — ​ — ​ 65,620 ​ Interest rate swap - non-designated hedge ​ 408,776 ​ 408,776 ​ — ​ 408,776 ​ — ​ Other derivative financial instruments (mortgage banking related) ​ 5,966 ​ 5,966 ​ — ​ 5,966 ​ — ​ Financial liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deposits ​ 35,054,829 ​ 35,050,516 ​ — ​ 35,050,516 ​ — ​ Federal funds purchased and securities sold under agreements to repurchase ​ 781,239 ​ 781,239 ​ — ​ 781,239 ​ — ​ Other borrowings ​ 327,066 ​ 334,640 ​ — ​ 334,640 ​ — ​ Accrued interest payable ​ 3,345 ​ 3,345 ​ — ​ 3,345 ​ — ​ Interest rate swap - non-designated hedge ​ 410,137 ​ 410,137 ​ — ​ 410,137 ​ — ​ Off balance sheet financial instruments: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commitments to extend credit ​ ​ — ​ 93,501 ​ — ​ 93,501 ​ — ​

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss).
Schedule of components of accumulated other comprehensive (loss) income	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unrealized Gains and ​ ​ ​ ​ ​ Benefit ​ (Losses) on Securities ​ ​ ​ (Dollars in thousands) ​ Plans ​ Available for Sale ​ Total Three Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at June 30, 2022 ​ $ 57 ​ $ (490,941) ​ $ (490,884) Other comprehensive loss before reclassifications ​ — ​ (225,551) ​ (225,551) Amounts reclassified from accumulated other comprehensive loss ​ — ​ (23) ​ (23) Net comprehensive loss ​ — ​ (225,574) ​ (225,574) Balance at September 30, 2022 ​ $ 57 ​ $ (716,515) ​ $ (716,458) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at June 30, 2021 ​ $ (151) ​ $ 24,287 ​ $ 24,136 Other comprehensive loss before reclassifications ​ — ​ (24,607) ​ ​ (24,607) Amounts reclassified from accumulated other comprehensive loss ​ — ​ (49) ​ (49) Net comprehensive loss ​ — ​ (24,656) ​ (24,656) Balance at September 30, 2021 ​ $ (151) ​ $ (369) ​ $ (520) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at December 31, 2021 ​ $ 57 ​ $ (21,203) ​ $ (21,146) Other comprehensive loss before reclassifications ​ ​ — ​ ​ (695,289) ​ ​ (695,289) Amounts reclassified from accumulated other comprehensive loss ​ — ​ (23) ​ (23) Net comprehensive loss ​ — ​ (695,312) ​ (695,312) Balance at September 30, 2022 ​ $ 57 ​ $ (716,515) ​ $ (716,458) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at December 31, 2020 ​ $ (151) ​ $ 47,740 ​ $ 47,589 Other comprehensive loss before reclassifications ​ — ​ (48,033) ​ (48,033) Amounts reclassified from accumulated other comprehensive loss ​ — ​ (76) ​ (76) Net comprehensive loss ​ — ​ (48,109) ​ (48,109) Balance at September 30, 2021 ​ $ (151) ​ $ (369) ​ $ (520)
Schedule of reclassifications out of accumulated other comprehensive (loss) income, net of tax	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount Reclassified from Accumulated Other Comprehensive Income (Loss) ​ ​ (Dollars in thousands) ​ For the Three Months Ended September 30, ​ For the Nine Months Ended September 30, ​ ​ Accumulated Other Comprehensive Income (Loss) Component 2022 2021 2022 2021 Income Statement Line Item Affected Gains on sales of available for sale securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ (30) ​ $ (64) ​ $ (30) ​ $ (100) ​ Securities gains, net ​ ​ ​ 7 ​ ​ 15 ​ ​ 7 ​ ​ 24 ​ Provision for income taxes ​ ​ ​ (23) ​ ​ (49) ​ ​ (23) ​ ​ (76) ​ Net income Total reclassifications for the period ​ $ (23) ​ $ (49) ​ $ (23) ​ $ (76) ​ ​

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2022
Derivative Financial Instruments
Derivative financial instruments summary	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2022 ​ ​ ​ ​ December 31, 2021 ​ ​ Balance Sheet ​ Notional ​ Estimated Fair Value ​ Notional ​ Estimated Fair Value (Dollars in thousands) Location Amount Gain Loss Amount Gain Loss ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value hedge of interest rate risk: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pay fixed rate swap with counterparty ​ Other Assets and Other Liabilities ​ $ 17,800 ​ $ 514 ​ $ — ​ $ 15,716 ​ $ — ​ $ 1,355 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Not designated hedges of interest rate risk: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Customer related interest rate contracts: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Matched interest rate swaps with borrowers ​ Other Assets and Other Liabilities ​ ​ 10,587,773 ​ ​ 2,079 ​ ​ 1,081,267 ​ ​ 10,404,605 ​ ​ 408,776 ​ ​ 69,998 Matched interest rate swaps with counterparty ​ Other Assets and Other Liabilities ​ ​ 10,588,670 ​ ​ 1,079,175 ​ ​ — ​ ​ 10,402,394 ​ ​ — ​ ​ 338,784 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Not designated hedges of interest rate risk - mortgage banking activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Contracts used to hedge mortgage servicing rights ​ Other Assets and Other Liabilities ​ ​ 27,000 ​ ​ — ​ ​ 1,681 ​ ​ 205,000 ​ ​ 1,228 ​ ​ — Contracts used to hedge mortgage pipeline ​ Other Assets ​ ​ 83,500 ​ ​ 2,035 ​ ​ — ​ ​ 324,000 ​ ​ 4,738 ​ ​ — Total derivatives ​ ​ ​ $ 21,304,743 ​ $ 1,083,803 ​ $ 1,082,948 ​ $ 21,351,715 ​ $ 414,742 ​ $ 410,137
Schedule of notional value of forward sale commitments and the fair value of those obligations along with the fair value of the mortgage pipeline	​ ​ ​ ​ ​ ​ ​ ​ ​ (Dollars in thousands) September 30, 2022 December 31, 2021 Mortgage loan pipeline ​ $ 77,530 ​ $ 264,000 ​ Expected closures ​ 70,833 ​ 233,265 ​ Fair value of mortgage loan pipeline commitments ​ (646) ​ 4,759 ​ Forward sales commitments ​ 83,500 ​ 324,000 ​ Fair value of forward commitments ​ 2,681 ​ (21) ​

Capital Ratios (Tables)

Capital Ratios (Tables)	9 Months Ended
	Sep. 30, 2022
Capital Ratios
Schedule of actual and required capital ratios	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Required to be ​ ​ ​ ​ ​ ​ ​ Minimum Capital Considered Well ​ ​ Actual ​ Required - Basel III ​ Capitalized ​ (Dollars in thousands) Amount Ratio Capital Amount Ratio Capital Amount Ratio September 30, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common equity Tier 1 to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ $ 3,666,829 11.02 % $ 2,328,284 ​ 7.00 % $ 2,161,978 6.50 % SouthState Bank (the Bank) ​ 3,956,892 11.91 % 2,325,129 ​ 7.00 % 2,159,049 6.50 % Tier 1 capital to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,666,829 11.02 % 2,827,202 ​ 8.50 % 2,660,896 8.00 % SouthState Bank (the Bank) ​ 3,956,892 11.91 % 2,823,371 ​ 8.50 % 2,657,291 8.00 % Total capital to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 4,311,208 12.96 % 3,492,427 ​ 10.50 % 3,326,121 10.00 % SouthState Bank (the Bank) ​ 4,211,272 12.68 % 3,487,694 ​ 10.50 % 3,321,613 10.00 % Tier 1 capital to average assets (leverage ratio): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,666,829 8.33 % 1,760,176 ​ 4.00 % 2,200,220 5.00 % SouthState Bank (the Bank) ​ 3,956,892 9.00 % 1,759,585 ​ 4.00 % 2,199,481 5.00 % December 31, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common equity Tier 1 to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ $ 3,201,644 11.75 % $ 1,906,831 ​ 7.00 % $ 1,770,629 6.50 % SouthState Bank (the Bank) ​ 3,431,069 12.62 % 1,902,954 ​ 7.00 % 1,767,029 6.50 % Tier 1 capital to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,201,644 11.75 % 2,315,438 ​ 8.50 % 2,179,236 8.00 % SouthState Bank (the Bank) ​ 3,431,069 12.62 % 2,310,730 ​ 8.50 % 2,174,804 8.00 % Total capital to risk-weighted assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,692,674 13.56 % 2,860,247 ​ 10.50 % 2,724,045 10.00 % SouthState Bank (the Bank) ​ 3,594,099 13.22 % 2,854,431 ​ 10.50 % 2,718,505 10.00 % Tier 1 capital to average assets (leverage ratio): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 3,201,644 8.05 % 1,590,045 ​ 4.00 % 1,987,556 5.00 % SouthState Bank (the Bank) ​ 3,431,069 8.65 % 1,587,212 ​ 4.00 % 1,984,015 5.00 %

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2022
Goodwill and Other Intangible Assets
Summary of gross carrying amounts and accumulated amortization of other intangible assets	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ (Dollars in thousands) 2022 2021 Gross carrying amount ​ $ 279,884 ​ $ 257,874 ​ Accumulated amortization ​ (154,494) ​ (129,807) ​ ​ ​ $ 125,390 ​ $ 128,067 ​
Schedule of estimated amortization expense for other intangibles for each of the next five quarters	​ ​ ​ ​ ​ ​ (Dollars in thousands) ​ ​ ​ ​ Quarter ending: ​ December 31, 2022 ​ $ 8,027 ​ March 31, 2023 ​ 7,299 ​ June 30, 2023 ​ 7,028 ​ September 30, 2023 ​ 6,616 ​ December 31, 2023 ​ ​ 6,615 ​ Thereafter ​ 82,824 ​ ​ ​ $ 118,409 ​

Loan Servicing, Mortgage Orig_2

Loan Servicing, Mortgage Origination, and Loans Held for Sale (Tables)	9 Months Ended
	Sep. 30, 2022
Loan Servicing, Mortgage Origination, and Loans Held for Sale
Summary of changes in the fair value of MSRs and its offsetting hedge	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Nine Months Ended ​ (Dollars in thousands) September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Increase in fair value of MSRs ​ $ 2,661 ​ $ 1,659 ​ $ 18,274 ​ $ 7,543 ​ Decay of MSRs ​ (2,530) ​ (3,427) ​ (8,052) ​ (11,276) ​ Loss related to derivatives ​ ​ (3,572) ​ ​ (577) ​ ​ (17,963) ​ ​ (4,178) ​ Net effect on statements of income ​ $ (3,441) ​ $ (2,345) ​ $ (7,741) ​ $ (7,911) ​
Schedule of characteristics and sensitivity analysis of the MSR	The characteristics and sensitivity analysis of the MSRs are included in the following table: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ ​ December 31, ​ ​ (Dollars in thousands) 2022 2021 Composition of residential loans serviced for others ​ ​ ​ ​ ​ ​ ​ ​ ​ Fixed-rate mortgage loans ​ ​ 100.0 % ​ ​ 99.9 % ​ Adjustable-rate mortgage loans ​ ​ — % ​ ​ 0.1 % ​ Total ​ ​ 100.0 % ​ ​ 100.0 % ​ Weighted average life ​ ​ 8.43 years ​ ​ 7.35 years ​ Constant Prepayment rate (CPR) ​ ​ 6.4 % ​ ​ 8.4 % ​ Weighted average discount rate ​ ​ 10.2 % ​ ​ 9.0 % ​ Effect on fair value due to change in interest rates ​ ​ ​ ​ ​ ​ ​ ​ ​ 25 basis point increase ​ $ 510 ​ ​ $ 3,961 ​ ​ 50 basis point increase ​ ​ 925 ​ ​ ​ 7,261 ​ ​ 25 basis point decrease ​ ​ (628) ​ ​ ​ (4,371) ​ ​ 50 basis point decrease ​ ​ (1,389) ​ ​ ​ (8,966) ​ ​

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Held-to-maturity Securities	$ 2,738,178	$ 1,819,901
Threshold Net Book Balance, Individually Evaluated Loans	1,000
Liability Recorded for Expected Credit Losses on Unfunded Commitments	53,000
Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued interest receivable for investment securities	28,400	19,200
Interest Receivable	93,700	70,600
Other Liabilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Liability Recorded for Expected Credit Losses on Unfunded Commitments	$ 53,000	$ 30,500

Mergers and Acquisitions - Dunc

Mergers and Acquisitions - Duncan Williams (Details) - USD ($) $ in Thousands	Feb. 01, 2021	Sep. 30, 2022	Dec. 31, 2021
Mergers and Acquisitions
Goodwill		$ 1,922,525	$ 1,581,085
Duncan-Williams, Inc.
Mergers and Acquisitions
Purchase price	$ 48,300
Additional premium paid after three years	8,000
Goodwill	$ 15,800

Mergers and Acquisitions - Atla

Mergers and Acquisitions - Atlantic Capital (Details)		3 Months Ended		9 Months Ended
	Mar. 01, 2022 USD ($) $ / shares shares	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Mergers and Acquisitions
Goodwill		$ 1,922,525,000		$ 1,922,525,000			$ 1,581,085,000
Deposits:
Goodwill		1,922,525,000		1,922,525,000			$ 1,581,085,000
Consideration:
Reversal of CSFL's ending allowance for credit losses		7,126,000	$ 3,847,000	18,779,000	$ 12,883,000
Atlantic Capital
Mergers and Acquisitions
Shares of the common stock in exchange for each share	0.36
Purchase price	$ 657,810,000
Loans at fair value acquired after initial fair value adjustment	2,400,000,000
Estimated discount on loans	$ 54,300,000
Estimated discount on loans (as a percent)	2.24%
Loans acquired as a percentage of total loans	10%
Credit deficiencies that were identified as Purchased Credit Deteriorated ("PCD") loans.	$ 137,900,000
Goodwill	341,440,000					$ 342,900,000
Acquisition costs		$ 7,100,000	$ 925,000	$ 15,000,000	$ 925,000
Assets
Cash and cash equivalents	250,158,000
Investment securities	703,710,000
Loans, net of allowance and mark	2,369,678,000
Premises and equipment	19,500,000
Intangible assets	20,791,000
Bank owned life insurance	74,613,000
Deferred tax asset	32,060,000
Other assets	51,554,000
Total assets	3,522,064,000
Deposits:
Noninterest-bearing	1,411,671,000
Interest-bearing	1,616,970,000
Total deposits	3,028,641,000
Federal funds purchased and securities sold under agreements to repurchase	50,000,000
Other borrowings	78,417,000
Other liabilities	48,636,000
Total liabilities	3,205,694,000
Net identifiable assets acquired over (under) liabilities assumed	316,370,000
Goodwill	341,440,000					$ 342,900,000
Net assets acquired over liabilities assumed	$ 657,810,000
Consideration:
Number of shares issued as consideration | shares	7,330,803
Purchase price per share of the Company's common stock | $ / shares	$ 90
Company common stock issued and cash exchanged for fractional shares.	$ 659,791,000
Value of shares issued	659,772,000
Value of common stock issued for fractional shares	19,000
Stock option conversion	1,135,000
Restricted stock unit conversion	2,870,000
Restricted stock awards conversion (unvested awards)	(5,986,000)
Fair value of total consideration transferred	657,810,000
Reversal of fair value adjustments	17,200,000
Securities and time deposits at fair value (discount)	30,900,000
HTM reclassified to AFS	$ 237,600,000
Credit mark of the loan portfolio (as a percent)	1.40%
Credit mark of the loan portfolio	$ 34,000,000
Net credit discount of the loan portfolio (as a percent)	2.24%
Net non-credit discount of the loan portfolio	$ 54,300,000
Reversal of CSFL's ending allowance for credit losses	22,100,000
Fair value adjustment for reversal of deferred fees and costs	7,600,000
Fair value adjustment for fixed assets and leased assets	2,600,000
Core deposit intangible from a third party valuation	$ 17,500,000
Core deposit intangible from a third party valuation (as a percent)	0.63
Serving assets from third party valuation	$ 3,200,000
Servicing assets written off	19,900,000
Goodwill written off	$ 2,600,000
Deferred tax assets related to fair value adjustments with effective tax rate	24.60%
Fair value negative adjustment for investment in low income housing	$ 1,100,000
Fair value adjustment (decrease) on write-off of prepaid assets	233,000
Fair value adjustment for receivables	154,000
Fair value adjustment for Small Business Investment Company ("SBIC') Investments	7,400,000
Issuance costs on subordinated debt	900,000
Fair value adjustment on reversal of debt issuance costs	3,400,000
Reversal of an existing unfunded commitment reserve at purchase date	2,800,000
Fair value adjustment to increase lease liabilities associated with rental facilities	1,400,000
Fair value adjustment for reversal of uncertain tax liability	700,000
Atlantic Capital | As Recorded by Atlantic Capital
Assets
Cash and cash equivalents	250,134,000
Investment securities	717,332,000
Loans, net of allowance and mark	2,394,256,000
Premises and equipment	16,892,000
Intangible assets	22,572,000
Bank owned life insurance	74,613,000
Deferred tax asset	30,231,000
Other assets	45,274,000
Total assets	3,551,304,000
Deposits:
Noninterest-bearing	1,411,671,000
Interest-bearing	1,616,970,000
Total deposits	3,028,641,000
Federal funds purchased and securities sold under agreements to repurchase	50,000,000
Other borrowings	74,131,000
Other liabilities	50,711,000
Total liabilities	3,203,483,000
Net identifiable assets acquired over (under) liabilities assumed	347,821,000
Net assets acquired over liabilities assumed	347,821,000
Atlantic Capital | Initial Fair Value Adjustments
Mergers and Acquisitions
Goodwill	342,939,000
Assets
Cash and cash equivalents	24,000
Investment securities	(13,622,000)
Loans, net of allowance and mark	(18,964,000)
Premises and equipment	2,608,000
Intangible assets	(1,781,000)
Deferred tax asset	2,273,000
Other assets	(1,277,000)
Total assets	(30,739,000)
Deposits:
Other borrowings	4,286,000
Other liabilities	(2,075,000)
Total liabilities	2,211,000
Net identifiable assets acquired over (under) liabilities assumed	(32,950,000)
Goodwill	342,939,000
Net assets acquired over liabilities assumed	309,989,000
Atlantic Capital | Subsequent Fair Value Adjustments
Mergers and Acquisitions
Goodwill	(1,499,000)
Assets
Loans, net of allowance and mark	(5,614,000)
Deferred tax asset	(444,000)
Other assets	7,557,000
Total assets	1,499,000
Deposits:
Net identifiable assets acquired over (under) liabilities assumed	1,499,000
Goodwill	$ (1,499,000)

Mergers and Acquisitions - Pro

Mergers and Acquisitions - Pro Forma (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Proforma amounts
Total revenues (net interest income plus noninterest income)		$ 380,736,000	$ 1,200,879,000	$ 1,139,741,000
Net interest income		289,117,000	945,790,000	865,671,000
Net adjusted income available to the common shareholder		$ 140,076,000	$ 380,588,000	$ 401,853,000
EPS - basic		$ 1.81	$ 5.02	$ 5.15
EPS - diluted		$ 1.80	$ 4.98	$ 5.12
Atlantic Capital
Mergers and Acquisitions
Acquisition costs	$ 7,100,000	$ 925,000	$ 15,000,000	$ 925,000

Investment Securities - Amortiz

Investment Securities - Amortized cost and fair value for available for sale securities (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
investment securities held-to-maturity
Amortized cost	$ 2,738,178,000			$ 2,738,178,000		$ 1,819,901,000
Gross Unrealized Gains	691,000			691,000		318,000
Gross Unrealized Losses	(439,707,000)			(439,707,000)		(42,155,000)
Fair Value	2,299,162,000			2,299,162,000		1,778,064,000
Investment securities available for sale
Amortized cost	6,319,896,000			6,319,896,000		5,221,296,000
Gross Unrealized Gains	3,136,000			3,136,000		35,980,000
Gross Unrealized Losses	(953,422,000)			(953,422,000)		(63,798,000)
Fair Value	5,369,610,000			5,369,610,000		5,193,478,000
Realized gains or losses		$ 0
Gross realized gains	103,000		$ 680,000	103,000	$ 748,000
Gross realized losses	73,000		616,000	73,000	648,000
Securities gains, net	30,000		$ 64,000	30,000	$ 100,000
Atlantic Capital
Investment securities available for sale
Sold securities		$ 414,400,000
U.S. Treasuries
Investment securities available for sale
Amortized cost	271,783,000			271,783,000
Gross Unrealized Losses	(7,358,000)			(7,358,000)
Fair Value	264,425,000			264,425,000
U.S. Government agencies
investment securities held-to-maturity
Amortized cost	197,261,000			197,261,000		112,913,000
Gross Unrealized Losses	(30,091,000)			(30,091,000)		(2,627,000)
Fair Value	167,170,000			167,170,000		110,286,000
Investment securities available for sale
Amortized cost	245,943,000			245,943,000		98,882,000
Gross Unrealized Losses	(27,320,000)			(27,320,000)		(1,765,000)
Fair Value	218,623,000			218,623,000		97,117,000
Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
investment securities held-to-maturity
Amortized cost	1,632,761,000			1,632,761,000		1,120,104,000
Gross Unrealized Gains						14,000
Gross Unrealized Losses	(267,505,000)			(267,505,000)		(24,278,000)
Fair Value	1,365,256,000			1,365,256,000		1,095,840,000
Investment securities available for sale
Amortized cost	2,048,537,000			2,048,537,000		1,851,700,000
Gross Unrealized Gains						5,324,000
Gross Unrealized Losses	(318,470,000)			(318,470,000)		(25,985,000)
Fair Value	1,730,067,000			1,730,067,000		1,831,039,000
Residential collateralized mortgage-obligations issued by U.S. government agencies or sponsored enterprises
investment securities held-to-maturity
Amortized cost	483,436,000			483,436,000		174,178,000
Gross Unrealized Gains	691,000			691,000
Gross Unrealized Losses	(64,602,000)			(64,602,000)		(4,937,000)
Fair Value	419,525,000			419,525,000		169,241,000
Investment securities available for sale
Amortized cost	729,712,000			729,712,000		730,949,000
Gross Unrealized Gains	6,000			6,000		5,957,000
Gross Unrealized Losses	(101,906,000)			(101,906,000)		(10,911,000)
Fair Value	627,812,000			627,812,000		725,995,000
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
investment securities held-to-maturity
Amortized cost	366,227,000			366,227,000		350,116,000
Gross Unrealized Gains						304,000
Gross Unrealized Losses	(66,366,000)			(66,366,000)		(8,021,000)
Fair Value	299,861,000			299,861,000		342,399,000
Investment securities available for sale
Amortized cost	1,224,869,000			1,224,869,000		1,220,233,000
Gross Unrealized Gains	2,551,000			2,551,000		5,438,000
Gross Unrealized Losses	(199,644,000)			(199,644,000)		(18,430,000)
Fair Value	1,027,776,000			1,027,776,000		1,207,241,000
State and municipal obligations
Investment securities available for sale
Amortized cost	1,256,045,000			1,256,045,000		798,211,000
Gross Unrealized Gains	23,000			23,000		16,697,000
Gross Unrealized Losses	(252,750,000)			(252,750,000)		(2,219,000)
Fair Value	1,003,318,000			1,003,318,000		812,689,000
Small Business Administration loan-backed securities
investment securities held-to-maturity
Amortized cost	58,493,000			58,493,000		62,590,000
Gross Unrealized Losses	(11,143,000)			(11,143,000)		(2,292,000)
Fair Value	47,350,000			47,350,000		60,298,000
Investment securities available for sale
Amortized cost	507,412,000			507,412,000		502,812,000
Gross Unrealized Gains	546,000			546,000		2,330,000
Gross Unrealized Losses	(43,722,000)			(43,722,000)		(4,479,000)
Fair Value	464,236,000			464,236,000		500,663,000
Corporate securities.
Investment securities available for sale
Amortized cost	35,595,000			35,595,000		18,509,000
Gross Unrealized Gains	10,000			10,000		234,000
Gross Unrealized Losses	(2,252,000)			(2,252,000)		(9,000)
Fair Value	$ 33,353,000			$ 33,353,000		$ 18,734,000

Investment Securities - Carryin

Investment Securities - Carrying value of other investment securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Other investment securities
Carrying Value	$ 179,755	$ 160,568
Federal Home Loan Bank stock
Other investment securities
Carrying Value	15,095	16,283
Federal Reserve Bank Stock
Other investment securities
Carrying Value	150,261	129,716
Investment in unconsolidated subsidiaries
Other investment securities
Carrying Value	3,563	3,563
Other nonmarketable investment securities
Other investment securities
Carrying Value	$ 10,836	$ 11,006

Investment Securities - Amort_2

Investment Securities - Amortized cost and fair value by contractual maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Amortized Cost
Due after one year through five years	$ 101,152
Due after five years through ten years	359,629
Due after ten years	2,277,397
Total	2,738,178	$ 1,819,901
Fair Value
Due after one year through five years	92,747
Due after five years through ten years	321,679
Due after ten years	1,884,736
Fair Value	2,299,162	1,778,064
Amortized Cost
Due in one year or less	107,230
Due after one year through five years	487,512
Due after five years through ten years	1,149,845
Due after ten years	4,575,309
Amortized Cost	6,319,896	5,221,296
Fair Value
Due in one year or less	105,253
Due after one year through five years	466,754
Due after five years through ten years	999,829
Due after ten years	3,797,774
Fair Value	$ 5,369,610	$ 5,193,478

Investment Securities - Securit

Investment Securities - Securities with gross unrealized losses (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Securities Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months	$ 157,205	$ 31,633
Twelve Months or More	282,502	10,522
Securities Held to Maturity, Fair Value
Less Than Twelve Months	1,104,782	1,316,106
Twelve Months or More	1,145,017	307,277
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	488,272	46,537
Twelve Months or More	465,150	17,261
Securities Available for Sale, Fair Value
Less Than Twelve Months	3,244,460	2,935,314
Twelve Months or More	1,953,903	462,192
U.S. Treasuries
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	7,358
Securities Available for Sale, Fair Value
Less Than Twelve Months	264,425
U.S. Government agencies
Securities Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months	10,903	1,745
Twelve Months or More	19,188	882
Securities Held to Maturity, Fair Value
Less Than Twelve Months	98,443	86,168
Twelve Months or More	68,727	24,118
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	12,248	529
Twelve Months or More	15,072	1,236
Securities Available for Sale, Fair Value
Less Than Twelve Months	159,395	73,353
Twelve Months or More	59,228	23,763
Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Securities Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months	90,161	18,768
Twelve Months or More	177,344	5,510
Securities Held to Maturity, Fair Value
Less Than Twelve Months	627,193	868,327
Twelve Months or More	738,063	184,819
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	122,435	17,381
Twelve Months or More	196,035	8,604
Securities Available for Sale, Fair Value
Less Than Twelve Months	874,957	1,274,934
Twelve Months or More	854,926	221,435
Residential collateralized mortgage-obligations issued by U.S. government agencies or sponsored enterprises
Securities Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months	34,942	4,937
Twelve Months or More	29,660
Securities Held to Maturity, Fair Value
Less Than Twelve Months	265,792	169,240
Twelve Months or More	104,370
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	35,684	10,911
Twelve Months or More	66,222
Securities Available for Sale, Fair Value
Less Than Twelve Months	368,713	432,300
Twelve Months or More	257,017
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Securities Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months	21,199	4,902
Twelve Months or More	45,167	3,119
Securities Held to Maturity, Fair Value
Less Than Twelve Months	113,354	154,963
Twelve Months or More	186,507	75,450
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	66,849	13,120
Twelve Months or More	132,795	5,310
Securities Available for Sale, Fair Value
Less Than Twelve Months	463,425	846,581
Twelve Months or More	528,853	98,106
State and municipal obligations
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	223,328	1,867
Twelve Months or More	29,422	352
Securities Available for Sale, Fair Value
Less Than Twelve Months	917,487	123,987
Twelve Months or More	75,275	8,579
Small Business Administration loan-backed securities
Securities Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months		1,281
Twelve Months or More	11,143	1,011
Securities Held to Maturity, Fair Value
Less Than Twelve Months		37,408
Twelve Months or More	47,350	22,890
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	18,118	2,720
Twelve Months or More	25,604	1,759
Securities Available for Sale, Fair Value
Less Than Twelve Months	167,715	179,168
Twelve Months or More	178,604	110,309
Corporate securities.
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	2,252	9
Securities Available for Sale, Fair Value
Less Than Twelve Months	$ 28,343	$ 4,991

Investment Securities - Trading

Investment Securities - Trading Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Investment Securities
Trading securities	$ 51,940	$ 77,689
U.S. Government agencies
Investment Securities
Trading securities	12,017	5,154
Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Investment Securities
Trading securities	11,556	6,853
Other residential mortgage issued or guaranteed by U.S. government agencies or sponsored enterprises
Investment Securities
Trading securities	5,921	12,315
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Investment Securities
Trading securities	3,116	29,667
State and municipal obligations
Investment Securities
Trading securities	18,060	20,798
Other debt securities
Investment Securities
Trading securities	$ 1,270	$ 2,902

Investment Securities - Net (lo

Investment Securities - Net (losses) gains on trading securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Investment Securities
Net gains (losses) on sales transaction	$ 76	$ 489	$ (1,544)	$ 944
Net mark to mark gains (losses)	465	(693)	(1,969)	(882)
Net gains (losses) on trading securities	$ 541	$ (204)	$ (3,513)	$ 62

Loans - Summary of loans (Detai

Loans - Summary of loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Summary of Loans
Total loans	$ 28,836,303		$ 23,928,166
Allowance for Credit Losses on Loans	(324,398)	$ (319,708)	(301,807)	$ (314,144)	$ (350,401)	$ (457,309)
Loans, net	28,511,905		23,626,359
Deferred fees costs	45,900		15,900
Unamortized Discounts	79,500		68,000
Construction and land development
Summary of Loans
Total loans	2,550,552		2,029,216
Consumer Owner Occupied Loans
Summary of Loans
Total loans	4,729,790		3,638,364
Home equity loans
Summary of Loans
Total loans	1,247,330		1,168,594
Commercial and industrial
Summary of Loans
Total loans	4,977,737		3,761,133
Other income producing property
Summary of Loans
Total loans	676,846		696,804
Consumer loans
Summary of Loans
Total loans	1,259,846		904,657
Other loans
Summary of Loans
Total loans	3,516		23,583
Commercial loans
Summary of Loans
Total loans	20,639,107		17,476,982
Commercial loans | Construction and land development
Summary of Loans
Total loans	1,669,266		1,342,755
Commercial loans | Commercial non-owner occupied
Summary of Loans
Total loans	7,964,470		6,735,699
Commercial loans | Commercial non-owner occupied real estate.
Summary of Loans
Total loans	5,426,216		4,970,116
Commercial loans | Consumer Owner Occupied Loans
Summary of Loans
Total loans	30,839		30,043
Commercial loans | Commercial owner occupied real estate loan
Summary of Loans
Total loans	5,426,216		4,970,116
Commercial loans | Commercial and industrial
Summary of Loans
Total loans	4,977,737		3,761,133
Commercial loans | Other income producing property
Summary of Loans
Total loans	567,063		613,653
Commercial loans | Other loans
Summary of Loans
Total loans	3,516		23,583
Consumer portfolio loans
Summary of Loans
Total loans	8,197,196		6,451,184
Consumer portfolio loans | Construction and land development
Summary of Loans
Total loans	881,286		686,461
Consumer portfolio loans | Consumer Owner Occupied Loans
Summary of Loans
Total loans	4,698,951		3,608,321
Consumer portfolio loans | Home equity loans
Summary of Loans
Total loans	1,247,330		1,168,594
Consumer portfolio loans | Other income producing property
Summary of Loans
Total loans	109,783		83,151
Consumer portfolio loans | Consumer loans
Summary of Loans
Total loans	$ 1,259,846		$ 904,657

Loans - Loans purchased through

Loans - Loans purchased through its acquisition of CSB (Details) - CSFL $ in Thousands	Mar. 01, 2022 USD ($)
Business Acquisition [Line Items]
Book value of acquired loans at acquisition	$ 137,874
Allowance for credit losses at acquisition	(13,758)
Non-credit discount at acquisition	(5,943)
Carrying value or book value of acquired loans at acquisition	$ 118,173

Loans - Credit risk profile by

Loans - Credit risk profile by risk grade of commercial and consumer loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Loans
Amortized Cost Basis by Origination Year - 2022	$ 6,630,643	$ 6,913,060
Amortized Cost Basis by Origination Year - 2021	6,963,607	3,765,913
Amortized Cost Basis by Origination Year - 2020	3,267,179	3,187,599
Amortized Cost Basis by Origination Year - 2019	2,708,405	2,026,918
Amortized Cost Basis by Origination Year - 2018	1,658,511	1,575,244
Amortized Cost Basis by Origination Year - Prior	4,527,880	4,106,997
Amortized Cost Basis by Origination Year - Revolving	3,080,078	2,352,435
Total loans	28,836,303	23,928,166
30 days past due
Loans
Total loans	71,829	68,136
60 days past due
Loans
Total loans	24,504	33,250
90 days past due
Loans
Total loans	3,788	4,863
Construction and land development
Loans
Total loans	2,550,552	2,029,216
Construction and land development | 30 days past due
Loans
Total loans	843	1,176
Construction and land development | 60 days past due
Loans
Total loans	464	59
Construction and land development | 90 days past due
Loans
Total loans	21	43
Commercial and industrial
Loans
Total loans	4,977,737	3,761,133
Commercial and industrial | 30 days past due
Loans
Total loans	29,527	50,451
Commercial and industrial | 60 days past due
Loans
Total loans	9,036	26,639
Commercial and industrial | 90 days past due
Loans
Total loans	3,211	3,991
Other income producing property
Loans
Total loans	676,846	696,804
Other income producing property | 30 days past due
Loans
Total loans	2,191	879
Other income producing property | 60 days past due
Loans
Total loans	1,110	424
Other income producing property | 90 days past due
Loans
Total loans	262	106
Consumer Owner Occupied Loans
Loans
Total loans	4,729,790	3,638,364
Consumer Owner Occupied Loans | 30 days past due
Loans
Total loans	4,740	4,046
Consumer Owner Occupied Loans | 60 days past due
Loans
Total loans	368	533
Home equity loans
Loans
Total loans	1,247,330	1,168,594
Home equity loans | 30 days past due
Loans
Total loans	3,104	2,565
Home equity loans | 60 days past due
Loans
Total loans	659	913
Consumer loans
Loans
Total loans	1,259,846	904,657
Consumer loans | 30 days past due
Loans
Total loans	18,488	2,672
Consumer loans | 60 days past due
Loans
Total loans	10,963	840
Consumer loans | 90 days past due
Loans
Total loans		1
Other loans
Loans
Total loans	3,516	23,583
Commercial loans
Loans
Amortized Cost Basis by Origination Year - 2022	4,593,359	4,964,031
Amortized Cost Basis by Origination Year - 2021	4,926,921	2,667,731
Amortized Cost Basis by Origination Year - 2020	2,407,745	2,609,226
Amortized Cost Basis by Origination Year - 2019	2,263,300	1,688,003
Amortized Cost Basis by Origination Year - 2018	1,400,328	1,292,534
Amortized Cost Basis by Origination Year - Prior	3,461,814	3,053,699
Amortized Cost Basis by Origination Year - Revolving	1,585,640	1,201,758
Total loans	20,639,107	17,476,982
Commercial loans | Pass
Loans
Amortized Cost Basis by Origination Year - 2022	4,536,989	4,896,878
Amortized Cost Basis by Origination Year - 2021	4,810,075	2,634,131
Amortized Cost Basis by Origination Year - 2020	2,334,397	2,497,592
Amortized Cost Basis by Origination Year - 2019	2,171,762	1,610,139
Amortized Cost Basis by Origination Year - 2018	1,328,779	1,182,529
Amortized Cost Basis by Origination Year - Prior	3,233,520	2,764,093
Amortized Cost Basis by Origination Year - Revolving	1,521,080	1,182,483
Total loans	19,936,602	16,767,845
Commercial loans | Special mention
Loans
Amortized Cost Basis by Origination Year - 2022	33,784	33,740
Amortized Cost Basis by Origination Year - 2021	40,378	23,859
Amortized Cost Basis by Origination Year - 2020	51,372	27,582
Amortized Cost Basis by Origination Year - 2019	21,222	49,316
Amortized Cost Basis by Origination Year - 2018	49,784	54,683
Amortized Cost Basis by Origination Year - Prior	97,602	178,307
Amortized Cost Basis by Origination Year - Revolving	24,942	4,307
Total loans	319,084	371,794
Commercial loans | Substandard
Loans
Amortized Cost Basis by Origination Year - 2022	22,586	33,412
Amortized Cost Basis by Origination Year - 2021	76,467	9,740
Amortized Cost Basis by Origination Year - 2020	21,975	84,047
Amortized Cost Basis by Origination Year - 2019	70,237	28,544
Amortized Cost Basis by Origination Year - 2018	21,610	55,320
Amortized Cost Basis by Origination Year - Prior	130,443	111,054
Amortized Cost Basis by Origination Year - Revolving	39,437	14,966
Total loans	382,755	337,083
Commercial loans | Doubtful
Loans
Amortized Cost Basis by Origination Year - 2022		1
Amortized Cost Basis by Origination Year - 2021	1	1
Amortized Cost Basis by Origination Year - 2020	1	5
Amortized Cost Basis by Origination Year - 2019	79	4
Amortized Cost Basis by Origination Year - 2018	155	2
Amortized Cost Basis by Origination Year - Prior	249	245
Amortized Cost Basis by Origination Year - Revolving	181	2
Total loans	666	260
Commercial loans | Construction and land development
Loans
Amortized Cost Basis by Origination Year - 2022	585,556	573,474
Amortized Cost Basis by Origination Year - 2021	691,831	363,765
Amortized Cost Basis by Origination Year - 2020	177,262	209,076
Amortized Cost Basis by Origination Year - 2019	80,381	39,192
Amortized Cost Basis by Origination Year - 2018	22,507	26,828
Amortized Cost Basis by Origination Year - Prior	40,367	53,253
Amortized Cost Basis by Origination Year - Revolving	71,362	77,167
Total loans	1,669,266	1,342,755
Commercial loans | Construction and land development | Pass
Loans
Amortized Cost Basis by Origination Year - 2022	584,646	570,166
Amortized Cost Basis by Origination Year - 2021	688,921	360,488
Amortized Cost Basis by Origination Year - 2020	177,223	206,586
Amortized Cost Basis by Origination Year - 2019	77,949	38,866
Amortized Cost Basis by Origination Year - 2018	15,244	24,728
Amortized Cost Basis by Origination Year - Prior	35,460	49,321
Amortized Cost Basis by Origination Year - Revolving	71,362	76,680
Total loans	1,650,805	1,326,835
Commercial loans | Construction and land development | Special mention
Loans
Amortized Cost Basis by Origination Year - 2022	561	2,347
Amortized Cost Basis by Origination Year - 2021	2,258	3,067
Amortized Cost Basis by Origination Year - 2020	26	186
Amortized Cost Basis by Origination Year - 2019	87
Amortized Cost Basis by Origination Year - 2018	7,263	1,557
Amortized Cost Basis by Origination Year - Prior	556	1,715
Amortized Cost Basis by Origination Year - Revolving		487
Total loans	10,751	9,359
Commercial loans | Construction and land development | Substandard
Loans
Amortized Cost Basis by Origination Year - 2022	349	960
Amortized Cost Basis by Origination Year - 2021	652	210
Amortized Cost Basis by Origination Year - 2020	13	2,304
Amortized Cost Basis by Origination Year - 2019	2,345	326
Amortized Cost Basis by Origination Year - 2018		543
Amortized Cost Basis by Origination Year - Prior	4,345	2,209
Total loans	7,704	6,552
Commercial loans | Construction and land development | Doubtful
Loans
Amortized Cost Basis by Origination Year - 2022		1
Amortized Cost Basis by Origination Year - Prior	6	8
Total loans	6	9
Commercial loans | Commercial non-owner occupied
Loans
Amortized Cost Basis by Origination Year - 2022	1,791,152	1,852,230
Amortized Cost Basis by Origination Year - 2021	1,944,532	811,316
Amortized Cost Basis by Origination Year - 2020	814,614	1,139,567
Amortized Cost Basis by Origination Year - 2019	1,049,357	737,024
Amortized Cost Basis by Origination Year - 2018	589,872	552,299
Amortized Cost Basis by Origination Year - Prior	1,644,100	1,538,361
Amortized Cost Basis by Origination Year - Revolving	130,843	104,902
Total loans	7,964,470	6,735,699
Commercial loans | Commercial non-owner occupied | 30 days past due
Loans
Total loans	10,035	3,591
Commercial loans | Commercial non-owner occupied | 60 days past due
Loans
Total loans	586	2,110
Commercial loans | Commercial non-owner occupied | 90 days past due
Loans
Total loans		96
Commercial loans | Commercial non-owner occupied | Pass
Loans
Amortized Cost Basis by Origination Year - 2022	1,768,208	1,812,512
Amortized Cost Basis by Origination Year - 2021	1,912,649	798,171
Amortized Cost Basis by Origination Year - 2020	771,153	1,061,021
Amortized Cost Basis by Origination Year - 2019	1,002,194	676,803
Amortized Cost Basis by Origination Year - 2018	553,378	494,618
Amortized Cost Basis by Origination Year - Prior	1,567,763	1,371,729
Amortized Cost Basis by Origination Year - Revolving	128,190	102,763
Total loans	7,703,535	6,317,617
Commercial loans | Commercial non-owner occupied | Special mention
Loans
Amortized Cost Basis by Origination Year - 2022	14,054	16,683
Amortized Cost Basis by Origination Year - 2021	6,914	12,985
Amortized Cost Basis by Origination Year - 2020	42,841	14,138
Amortized Cost Basis by Origination Year - 2019	6,277	36,875
Amortized Cost Basis by Origination Year - 2018	28,528	25,729
Amortized Cost Basis by Origination Year - Prior	27,283	110,109
Total loans	125,897	216,519
Commercial loans | Commercial non-owner occupied | Substandard
Loans
Amortized Cost Basis by Origination Year - 2022	8,890	23,035
Amortized Cost Basis by Origination Year - 2021	24,968	160
Amortized Cost Basis by Origination Year - 2020	620	64,408
Amortized Cost Basis by Origination Year - 2019	40,807	23,346
Amortized Cost Basis by Origination Year - 2018	7,966	31,952
Amortized Cost Basis by Origination Year - Prior	49,054	56,477
Amortized Cost Basis by Origination Year - Revolving	2,653	2,139
Total loans	134,958	201,517
Commercial loans | Commercial non-owner occupied | Doubtful
Loans
Amortized Cost Basis by Origination Year - 2021	1
Amortized Cost Basis by Origination Year - 2019	79
Amortized Cost Basis by Origination Year - Prior		46
Total loans	80	46
Commercial loans | Commercial owner occupied real estate loan
Loans
Amortized Cost Basis by Origination Year - 2022	857,202	1,199,249
Amortized Cost Basis by Origination Year - 2021	1,214,749	787,504
Amortized Cost Basis by Origination Year - 2020	767,542	817,080
Amortized Cost Basis by Origination Year - 2019	768,338	562,555
Amortized Cost Basis by Origination Year - 2018	492,176	469,555
Amortized Cost Basis by Origination Year - Prior	1,250,860	1,064,239
Amortized Cost Basis by Origination Year - Revolving	75,349	69,934
Total loans	5,426,216	4,970,116
Commercial loans | Commercial owner occupied real estate loan | 30 days past due
Loans
Total loans	2,901	2,756
Commercial loans | Commercial owner occupied real estate loan | 60 days past due
Loans
Total loans	1,318	1,732
Commercial loans | Commercial owner occupied real estate loan | 90 days past due
Loans
Total loans	294	626
Commercial loans | Commercial owner occupied real estate loan | Pass
Loans
Amortized Cost Basis by Origination Year - 2022	838,791	1,182,722
Amortized Cost Basis by Origination Year - 2021	1,167,238	780,339
Amortized Cost Basis by Origination Year - 2020	743,632	801,162
Amortized Cost Basis by Origination Year - 2019	737,627	549,642
Amortized Cost Basis by Origination Year - 2018	476,813	428,163
Amortized Cost Basis by Origination Year - Prior	1,134,341	980,701
Amortized Cost Basis by Origination Year - Revolving	72,065	69,739
Total loans	5,170,507	4,792,468
Commercial loans | Commercial owner occupied real estate loan | Special mention
Loans
Amortized Cost Basis by Origination Year - 2022	11,866	9,152
Amortized Cost Basis by Origination Year - 2021	25,820	4,257
Amortized Cost Basis by Origination Year - 2020	6,032	7,331
Amortized Cost Basis by Origination Year - 2019	11,305	10,860
Amortized Cost Basis by Origination Year - 2018	8,907	22,792
Amortized Cost Basis by Origination Year - Prior	60,034	49,083
Amortized Cost Basis by Origination Year - Revolving	2,281	115
Total loans	126,245	103,590
Commercial loans | Commercial owner occupied real estate loan | Substandard
Loans
Amortized Cost Basis by Origination Year - 2022	6,545	7,375
Amortized Cost Basis by Origination Year - 2021	21,691	2,907
Amortized Cost Basis by Origination Year - 2020	17,877	8,587
Amortized Cost Basis by Origination Year - 2019	19,406	2,053
Amortized Cost Basis by Origination Year - 2018	6,456	18,600
Amortized Cost Basis by Origination Year - Prior	56,461	34,431
Amortized Cost Basis by Origination Year - Revolving	1,003	80
Total loans	129,439	74,033
Commercial loans | Commercial owner occupied real estate loan | Doubtful
Loans
Amortized Cost Basis by Origination Year - 2021		1
Amortized Cost Basis by Origination Year - 2020	1
Amortized Cost Basis by Origination Year - Prior	24	24
Total loans	25	25
Commercial loans | Commercial and industrial
Loans
Amortized Cost Basis by Origination Year - 2022	1,236,562	1,202,346
Amortized Cost Basis by Origination Year - 2021	974,005	626,160
Amortized Cost Basis by Origination Year - 2020	580,918	371,202
Amortized Cost Basis by Origination Year - 2019	313,599	271,696
Amortized Cost Basis by Origination Year - 2018	243,190	185,202
Amortized Cost Basis by Origination Year - Prior	386,733	228,409
Amortized Cost Basis by Origination Year - Revolving	1,242,730	876,118
Total loans	4,977,737	3,761,133
Commercial loans | Commercial and industrial | Pass
Loans
Amortized Cost Basis by Origination Year - 2022	1,224,618	1,198,849
Amortized Cost Basis by Origination Year - 2021	941,383	618,676
Amortized Cost Basis by Origination Year - 2020	577,778	360,551
Amortized Cost Basis by Origination Year - 2019	304,904	267,772
Amortized Cost Basis by Origination Year - 2018	231,177	178,538
Amortized Cost Basis by Origination Year - Prior	373,938	219,339
Amortized Cost Basis by Origination Year - Revolving	1,186,170	860,134
Total loans	4,839,968	3,703,859
Commercial loans | Commercial and industrial | Special mention
Loans
Amortized Cost Basis by Origination Year - 2022	5,790	2,759
Amortized Cost Basis by Origination Year - 2021	4,034	1,519
Amortized Cost Basis by Origination Year - 2020	1,013	2,434
Amortized Cost Basis by Origination Year - 2019	2,949	1,268
Amortized Cost Basis by Origination Year - 2018	4,893	3,224
Amortized Cost Basis by Origination Year - Prior	5,266	3,871
Amortized Cost Basis by Origination Year - Revolving	22,222	3,281
Total loans	46,167	18,356
Commercial loans | Commercial and industrial | Substandard
Loans
Amortized Cost Basis by Origination Year - 2022	6,154	738
Amortized Cost Basis by Origination Year - 2021	28,588	5,965
Amortized Cost Basis by Origination Year - 2020	2,127	8,212
Amortized Cost Basis by Origination Year - 2019	5,746	2,653
Amortized Cost Basis by Origination Year - 2018	6,965	3,438
Amortized Cost Basis by Origination Year - Prior	7,460	5,183
Amortized Cost Basis by Origination Year - Revolving	34,288	12,701
Total loans	91,328	38,890
Commercial loans | Commercial and industrial | Doubtful
Loans
Amortized Cost Basis by Origination Year - 2020		5
Amortized Cost Basis by Origination Year - 2019		3
Amortized Cost Basis by Origination Year - 2018	155	2
Amortized Cost Basis by Origination Year - Prior	69	16
Amortized Cost Basis by Origination Year - Revolving	50	2
Total loans	274	28
Commercial loans | Other income producing property
Loans
Amortized Cost Basis by Origination Year - 2022	113,545	108,417
Amortized Cost Basis by Origination Year - 2021	98,180	75,916
Amortized Cost Basis by Origination Year - 2020	65,248	68,534
Amortized Cost Basis by Origination Year - 2019	48,928	77,369
Amortized Cost Basis by Origination Year - 2018	52,511	58,511
Amortized Cost Basis by Origination Year - Prior	139,043	168,246
Amortized Cost Basis by Origination Year - Revolving	49,608	56,660
Total loans	567,063	613,653
Commercial loans | Other income producing property | Pass
Loans
Amortized Cost Basis by Origination Year - 2022	111,929	105,533
Amortized Cost Basis by Origination Year - 2021	96,377	73,583
Amortized Cost Basis by Origination Year - 2020	62,628	67,173
Amortized Cost Basis by Origination Year - 2019	48,310	76,971
Amortized Cost Basis by Origination Year - 2018	52,095	56,343
Amortized Cost Basis by Origination Year - Prior	121,664	142,183
Amortized Cost Basis by Origination Year - Revolving	47,962	56,190
Total loans	540,965	577,976
Commercial loans | Other income producing property | Special mention
Loans
Amortized Cost Basis by Origination Year - 2022	968	1,580
Amortized Cost Basis by Origination Year - 2021	1,331	1,851
Amortized Cost Basis by Origination Year - 2020	1,295	1,063
Amortized Cost Basis by Origination Year - 2019	317	232
Amortized Cost Basis by Origination Year - 2018	193	1,381
Amortized Cost Basis by Origination Year - Prior	4,463	13,526
Amortized Cost Basis by Origination Year - Revolving	173	424
Total loans	8,740	20,057
Commercial loans | Other income producing property | Substandard
Loans
Amortized Cost Basis by Origination Year - 2022	648	1,304
Amortized Cost Basis by Origination Year - 2021	472	482
Amortized Cost Basis by Origination Year - 2020	1,325	298
Amortized Cost Basis by Origination Year - 2019	301	166
Amortized Cost Basis by Origination Year - 2018	223	787
Amortized Cost Basis by Origination Year - Prior	12,911	12,531
Amortized Cost Basis by Origination Year - Revolving	1,342	46
Total loans	17,222	15,614
Commercial loans | Other income producing property | Doubtful
Loans
Amortized Cost Basis by Origination Year - Prior	5	6
Amortized Cost Basis by Origination Year - Revolving	131
Total loans	136	6
Commercial loans | Consumer Owner Occupied Loans
Loans
Amortized Cost Basis by Origination Year - 2022	5,826	4,732
Amortized Cost Basis by Origination Year - 2021	3,624	3,070
Amortized Cost Basis by Origination Year - 2020	2,161	3,767
Amortized Cost Basis by Origination Year - 2019	2,697	167
Amortized Cost Basis by Origination Year - 2018	72	139
Amortized Cost Basis by Origination Year - Prior	711	1,191
Amortized Cost Basis by Origination Year - Revolving	15,748	16,977
Total loans	30,839	30,043
Commercial loans | Consumer Owner Occupied Loans | Pass
Loans
Amortized Cost Basis by Origination Year - 2022	5,281	3,513
Amortized Cost Basis by Origination Year - 2021	3,507	2,874
Amortized Cost Basis by Origination Year - 2020	1,983	1,099
Amortized Cost Basis by Origination Year - 2019	778	85
Amortized Cost Basis by Origination Year - 2018	72	139
Amortized Cost Basis by Origination Year - Prior	354	820
Amortized Cost Basis by Origination Year - Revolving	15,331	16,977
Total loans	27,306	25,507
Commercial loans | Consumer Owner Occupied Loans | Special mention
Loans
Amortized Cost Basis by Origination Year - 2022	545	1,219
Amortized Cost Basis by Origination Year - 2021	21	180
Amortized Cost Basis by Origination Year - 2020	165	2,430
Amortized Cost Basis by Origination Year - 2019	287	81
Amortized Cost Basis by Origination Year - Prior		3
Amortized Cost Basis by Origination Year - Revolving	266
Total loans	1,284	3,913
Commercial loans | Consumer Owner Occupied Loans | Substandard
Loans
Amortized Cost Basis by Origination Year - 2021	96	16
Amortized Cost Basis by Origination Year - 2020	13	238
Amortized Cost Basis by Origination Year - 2019	1,632
Amortized Cost Basis by Origination Year - Prior	212	223
Amortized Cost Basis by Origination Year - Revolving	151
Total loans	2,104	477
Commercial loans | Consumer Owner Occupied Loans | Doubtful
Loans
Amortized Cost Basis by Origination Year - 2019		1
Amortized Cost Basis by Origination Year - Prior	145	145
Total loans	145	146
Commercial loans | Other loans
Loans
Amortized Cost Basis by Origination Year - 2022	3,516	23,583
Total loans	3,516	23,583
Commercial loans | Other loans | Pass
Loans
Amortized Cost Basis by Origination Year - 2022	3,516	23,583
Total loans	3,516	23,583
Consumer portfolio loans
Loans
Amortized Cost Basis by Origination Year - 2022	2,037,284	1,949,029
Amortized Cost Basis by Origination Year - 2021	2,036,686	1,098,182
Amortized Cost Basis by Origination Year - 2020	859,434	578,373
Amortized Cost Basis by Origination Year - 2019	445,105	338,915
Amortized Cost Basis by Origination Year - 2018	258,183	282,710
Amortized Cost Basis by Origination Year - Prior	1,066,066	1,053,298
Amortized Cost Basis by Origination Year - Revolving	1,494,438	1,150,677
Total loans	8,197,196	6,451,184
Consumer portfolio loans | Current due
Loans
Amortized Cost Basis by Origination Year - 2022	2,036,817	1,947,911
Amortized Cost Basis by Origination Year - 2021	2,034,289	1,095,907
Amortized Cost Basis by Origination Year - 2020	857,178	576,511
Amortized Cost Basis by Origination Year - 2019	442,384	336,965
Amortized Cost Basis by Origination Year - 2018	256,500	280,960
Amortized Cost Basis by Origination Year - Prior	1,052,782	1,039,029
Amortized Cost Basis by Origination Year - Revolving	1,463,895	1,147,334
Total loans	8,143,845	6,424,617
Consumer portfolio loans | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2022	312	589
Amortized Cost Basis by Origination Year - 2021	1,558	1,103
Amortized Cost Basis by Origination Year - 2020	789	510
Amortized Cost Basis by Origination Year - 2019	1,210	734
Amortized Cost Basis by Origination Year - 2018	572	1,224
Amortized Cost Basis by Origination Year - Prior	4,303	4,381
Amortized Cost Basis by Origination Year - Revolving	19,518	2,337
Total loans	28,262	10,878
Consumer portfolio loans | 60 days past due
Loans
Amortized Cost Basis by Origination Year - 2022	154	145
Amortized Cost Basis by Origination Year - 2021	325	412
Amortized Cost Basis by Origination Year - 2020	799	308
Amortized Cost Basis by Origination Year - 2019	519	378
Amortized Cost Basis by Origination Year - 2018	304	201
Amortized Cost Basis by Origination Year - Prior	2,309	2,357
Amortized Cost Basis by Origination Year - Revolving	10,227	356
Total loans	14,637	4,157
Consumer portfolio loans | 90 days past due
Loans
Amortized Cost Basis by Origination Year - 2022	1	384
Amortized Cost Basis by Origination Year - 2021	514	760
Amortized Cost Basis by Origination Year - 2020	668	1,044
Amortized Cost Basis by Origination Year - 2019	992	838
Amortized Cost Basis by Origination Year - 2018	807	325
Amortized Cost Basis by Origination Year - Prior	6,672	7,531
Amortized Cost Basis by Origination Year - Revolving	798	650
Total loans	10,452	11,532
Consumer portfolio loans | Construction and land development
Loans
Amortized Cost Basis by Origination Year - 2022	320,794	411,728
Amortized Cost Basis by Origination Year - 2021	446,805	204,392
Amortized Cost Basis by Origination Year - 2020	74,728	33,965
Amortized Cost Basis by Origination Year - 2019	14,892	13,429
Amortized Cost Basis by Origination Year - 2018	7,677	8,484
Amortized Cost Basis by Origination Year - Prior	16,035	14,301
Amortized Cost Basis by Origination Year - Revolving	355	162
Total loans	881,286	686,461
Consumer portfolio loans | Construction and land development | Current due
Loans
Amortized Cost Basis by Origination Year - 2022	320,794	411,728
Amortized Cost Basis by Origination Year - 2021	446,805	204,368
Amortized Cost Basis by Origination Year - 2020	74,247	33,965
Amortized Cost Basis by Origination Year - 2019	14,872	13,429
Amortized Cost Basis by Origination Year - 2018	7,608	8,484
Amortized Cost Basis by Origination Year - Prior	16,011	14,185
Amortized Cost Basis by Origination Year - Revolving	355	162
Total loans	880,692	686,321
Consumer portfolio loans | Construction and land development | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2021		24
Amortized Cost Basis by Origination Year - 2020	24
Amortized Cost Basis by Origination Year - 2019	20
Amortized Cost Basis by Origination Year - 2018	69
Amortized Cost Basis by Origination Year - Prior	24
Total loans	137	24
Consumer portfolio loans | Construction and land development | 60 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	300
Amortized Cost Basis by Origination Year - Prior		12
Total loans	300	12
Consumer portfolio loans | Construction and land development | 90 days past due
Loans
Amortized Cost Basis by Origination Year - 2020	157
Amortized Cost Basis by Origination Year - Prior		104
Total loans	157	104
Consumer portfolio loans | Other income producing property
Loans
Amortized Cost Basis by Origination Year - 2022	32,433	22,131
Amortized Cost Basis by Origination Year - 2021	21,664	5,620
Amortized Cost Basis by Origination Year - 2020	4,989	4,906
Amortized Cost Basis by Origination Year - 2019	2,819	4,977
Amortized Cost Basis by Origination Year - 2018	4,580	6,303
Amortized Cost Basis by Origination Year - Prior	42,664	37,835
Amortized Cost Basis by Origination Year - Revolving	634	1,379
Total loans	109,783	83,151
Consumer portfolio loans | Other income producing property | Current due
Loans
Amortized Cost Basis by Origination Year - 2022	32,433	22,131
Amortized Cost Basis by Origination Year - 2021	21,664	5,620
Amortized Cost Basis by Origination Year - 2020	4,989	4,906
Amortized Cost Basis by Origination Year - 2019	2,819	4,977
Amortized Cost Basis by Origination Year - 2018	4,580	6,303
Amortized Cost Basis by Origination Year - Prior	42,373	37,575
Amortized Cost Basis by Origination Year - Revolving	634	1,379
Total loans	109,492	82,891
Consumer portfolio loans | Other income producing property | 30 days past due
Loans
Amortized Cost Basis by Origination Year - Prior	165	90
Total loans	165	90
Consumer portfolio loans | Other income producing property | 60 days past due
Loans
Amortized Cost Basis by Origination Year - Prior		156
Total loans		156
Consumer portfolio loans | Other income producing property | 90 days past due
Loans
Amortized Cost Basis by Origination Year - Prior	126	14
Total loans	126	14
Consumer portfolio loans | Consumer Owner Occupied Loans
Loans
Amortized Cost Basis by Origination Year - 2022	1,351,487	1,193,038
Amortized Cost Basis by Origination Year - 2021	1,336,979	712,398
Amortized Cost Basis by Origination Year - 2020	651,893	406,281
Amortized Cost Basis by Origination Year - 2019	329,865	247,762
Amortized Cost Basis by Origination Year - 2018	194,478	230,329
Amortized Cost Basis by Origination Year - Prior	833,022	818,509
Amortized Cost Basis by Origination Year - Revolving	1,227	4
Total loans	4,698,951	3,608,321
Consumer portfolio loans | Consumer Owner Occupied Loans | Current due
Loans
Amortized Cost Basis by Origination Year - 2022	1,351,309	1,192,449
Amortized Cost Basis by Origination Year - 2021	1,335,059	710,828
Amortized Cost Basis by Origination Year - 2020	650,548	405,138
Amortized Cost Basis by Origination Year - 2019	327,852	246,487
Amortized Cost Basis by Origination Year - 2018	193,413	228,876
Amortized Cost Basis by Origination Year - Prior	824,959	810,605
Amortized Cost Basis by Origination Year - Revolving	1,227	4
Total loans	4,684,367	3,594,387
Consumer portfolio loans | Consumer Owner Occupied Loans | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2022	178	354
Amortized Cost Basis by Origination Year - 2021	1,247	666
Amortized Cost Basis by Origination Year - 2020	432	234
Amortized Cost Basis by Origination Year - 2019	786	472
Amortized Cost Basis by Origination Year - 2018	99	1,068
Amortized Cost Basis by Origination Year - Prior	2,753	2,230
Total loans	5,495	5,024
Consumer portfolio loans | Consumer Owner Occupied Loans | 60 days past due
Loans
Amortized Cost Basis by Origination Year - 2021	240	330
Amortized Cost Basis by Origination Year - 2020	462	218
Amortized Cost Basis by Origination Year - 2019	314	254
Amortized Cost Basis by Origination Year - 2018	194	111
Amortized Cost Basis by Origination Year - Prior	1,105	928
Total loans	2,315	1,841
Consumer portfolio loans | Consumer Owner Occupied Loans | 90 days past due
Loans
Amortized Cost Basis by Origination Year - 2022		235
Amortized Cost Basis by Origination Year - 2021	433	574
Amortized Cost Basis by Origination Year - 2020	451	691
Amortized Cost Basis by Origination Year - 2019	913	549
Amortized Cost Basis by Origination Year - 2018	772	274
Amortized Cost Basis by Origination Year - Prior	4,205	4,746
Total loans	6,774	7,069
Consumer portfolio loans | Home equity loans
Loans
Amortized Cost Basis by Origination Year - 2022	4,837	7,209
Amortized Cost Basis by Origination Year - 2021	5,363	5,762
Amortized Cost Basis by Origination Year - 2020	3,998	4,985
Amortized Cost Basis by Origination Year - 2019	2,676	2,431
Amortized Cost Basis by Origination Year - 2018	2,131	1,039
Amortized Cost Basis by Origination Year - Prior	21,433	27,358
Amortized Cost Basis by Origination Year - Revolving	1,206,892	1,119,810
Total loans	1,247,330	1,168,594
Consumer portfolio loans | Home equity loans | Current due
Loans
Amortized Cost Basis by Origination Year - 2022	4,837	7,128
Amortized Cost Basis by Origination Year - 2021	5,303	5,648
Amortized Cost Basis by Origination Year - 2020	3,803	4,745
Amortized Cost Basis by Origination Year - 2019	2,257	2,180
Amortized Cost Basis by Origination Year - 2018	1,881	993
Amortized Cost Basis by Origination Year - Prior	20,142	24,716
Amortized Cost Basis by Origination Year - Revolving	1,203,325	1,116,621
Total loans	1,241,548	1,162,031
Consumer portfolio loans | Home equity loans | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2022		6
Amortized Cost Basis by Origination Year - 2021		49
Amortized Cost Basis by Origination Year - 2020	155	68
Amortized Cost Basis by Origination Year - 2019	170	71
Amortized Cost Basis by Origination Year - 2018	250	24
Amortized Cost Basis by Origination Year - Prior	36	491
Amortized Cost Basis by Origination Year - Revolving	3,009	2,200
Total loans	3,620	2,909
Consumer portfolio loans | Home equity loans | 60 days past due
Loans
Amortized Cost Basis by Origination Year - 2019	195
Amortized Cost Basis by Origination Year - Prior	313	603
Amortized Cost Basis by Origination Year - Revolving	347	339
Total loans	855	942
Consumer portfolio loans | Home equity loans | 90 days past due
Loans
Amortized Cost Basis by Origination Year - 2022		75
Amortized Cost Basis by Origination Year - 2021	60	65
Amortized Cost Basis by Origination Year - 2020	40	172
Amortized Cost Basis by Origination Year - 2019	54	180
Amortized Cost Basis by Origination Year - 2018		22
Amortized Cost Basis by Origination Year - Prior	942	1,548
Amortized Cost Basis by Origination Year - Revolving	211	650
Total loans	1,307	2,712
Consumer portfolio loans | Consumer loans
Loans
Amortized Cost Basis by Origination Year - 2022	327,733	299,227
Amortized Cost Basis by Origination Year - 2021	225,875	170,010
Amortized Cost Basis by Origination Year - 2020	123,826	128,236
Amortized Cost Basis by Origination Year - 2019	94,853	70,316
Amortized Cost Basis by Origination Year - 2018	49,317	36,555
Amortized Cost Basis by Origination Year - Prior	152,912	155,295
Amortized Cost Basis by Origination Year - Revolving	285,330	45,018
Total loans	1,259,846	904,657
Consumer portfolio loans | Consumer loans | Current due
Loans
Amortized Cost Basis by Origination Year - 2022	327,444	298,779
Amortized Cost Basis by Origination Year - 2021	225,458	169,443
Amortized Cost Basis by Origination Year - 2020	123,591	127,757
Amortized Cost Basis by Origination Year - 2019	94,584	69,892
Amortized Cost Basis by Origination Year - 2018	49,018	36,304
Amortized Cost Basis by Origination Year - Prior	149,297	151,948
Amortized Cost Basis by Origination Year - Revolving	258,354	44,864
Total loans	1,227,746	898,987
Consumer portfolio loans | Consumer loans | 30 days past due
Loans
Amortized Cost Basis by Origination Year - 2022	134	229
Amortized Cost Basis by Origination Year - 2021	311	364
Amortized Cost Basis by Origination Year - 2020	178	208
Amortized Cost Basis by Origination Year - 2019	234	191
Amortized Cost Basis by Origination Year - 2018	154	132
Amortized Cost Basis by Origination Year - Prior	1,325	1,570
Amortized Cost Basis by Origination Year - Revolving	16,509	137
Total loans	18,845	2,831
Consumer portfolio loans | Consumer loans | 60 days past due
Loans
Amortized Cost Basis by Origination Year - 2022	154	145
Amortized Cost Basis by Origination Year - 2021	85	82
Amortized Cost Basis by Origination Year - 2020	37	90
Amortized Cost Basis by Origination Year - 2019	10	124
Amortized Cost Basis by Origination Year - 2018	110	90
Amortized Cost Basis by Origination Year - Prior	891	658
Amortized Cost Basis by Origination Year - Revolving	9,880	17
Total loans	11,167	1,206
Consumer portfolio loans | Consumer loans | 90 days past due
Loans
Amortized Cost Basis by Origination Year - 2022	1	74
Amortized Cost Basis by Origination Year - 2021	21	121
Amortized Cost Basis by Origination Year - 2020	20	181
Amortized Cost Basis by Origination Year - 2019	25	109
Amortized Cost Basis by Origination Year - 2018	35	29
Amortized Cost Basis by Origination Year - Prior	1,399	1,119
Amortized Cost Basis by Origination Year - Revolving	587
Total loans	$ 2,088	$ 1,633

Loans - Aging analysis of past

Loans - Aging analysis of past due loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Loans and Allowance for Loan Losses
Non-Accruing	$ 96,240	$ 75,418
Total loans	28,836,303	23,928,166
30 days past due
Loans and Allowance for Loan Losses
Total loans	71,829	68,136
60 days past due
Loans and Allowance for Loan Losses
Total loans	24,504	33,250
90 days past due
Loans and Allowance for Loan Losses
Total loans	3,788	4,863
Total Past Due
Loans and Allowance for Loan Losses
Total loans	100,121	106,249
Current
Loans and Allowance for Loan Losses
Total loans	28,639,942	23,746,499
Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	20,926,566	16,050,775
Construction and land development
Loans and Allowance for Loan Losses
Non-Accruing	460	1,567
Total loans	2,550,552	2,029,216
Construction and land development | 30 days past due
Loans and Allowance for Loan Losses
Total loans	843	1,176
Construction and land development | 60 days past due
Loans and Allowance for Loan Losses
Total loans	464	59
Construction and land development | 90 days past due
Loans and Allowance for Loan Losses
Total loans	21	43
Construction and land development | Total Past Due
Loans and Allowance for Loan Losses
Total loans	1,328	1,278
Construction and land development | Current
Loans and Allowance for Loan Losses
Total loans	2,548,764	2,026,371
Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Non-Accruing	17,186	18,183
Total loans	4,729,790	3,638,364
Consumer Owner Occupied Loans | 30 days past due
Loans and Allowance for Loan Losses
Total loans	4,740	4,046
Consumer Owner Occupied Loans | 60 days past due
Loans and Allowance for Loan Losses
Total loans	368	533
Consumer Owner Occupied Loans | Total Past Due
Loans and Allowance for Loan Losses
Total loans	5,108	4,579
Consumer Owner Occupied Loans | Current
Loans and Allowance for Loan Losses
Total loans	4,707,496	3,615,602
Home equity loans
Loans and Allowance for Loan Losses
Non-Accruing	6,322	6,255
Total loans	1,247,330	1,168,594
Home equity loans | 30 days past due
Loans and Allowance for Loan Losses
Total loans	3,104	2,565
Home equity loans | 60 days past due
Loans and Allowance for Loan Losses
Total loans	659	913
Home equity loans | Total Past Due
Loans and Allowance for Loan Losses
Total loans	3,763	3,478
Home equity loans | Current
Loans and Allowance for Loan Losses
Total loans	1,237,245	1,158,861
Commercial and industrial
Loans and Allowance for Loan Losses
Non-Accruing	13,839	7,441
Total loans	4,977,737	3,761,133
Commercial and industrial | 30 days past due
Loans and Allowance for Loan Losses
Total loans	29,527	50,451
Commercial and industrial | 60 days past due
Loans and Allowance for Loan Losses
Total loans	9,036	26,639
Commercial and industrial | 90 days past due
Loans and Allowance for Loan Losses
Total loans	3,211	3,991
Commercial and industrial | Total Past Due
Loans and Allowance for Loan Losses
Total loans	41,774	81,081
Commercial and industrial | Current
Loans and Allowance for Loan Losses
Total loans	4,922,124	3,672,611
Other income producing property
Loans and Allowance for Loan Losses
Non-Accruing	2,462	4,075
Total loans	676,846	696,804
Other income producing property | 30 days past due
Loans and Allowance for Loan Losses
Total loans	2,191	879
Other income producing property | 60 days past due
Loans and Allowance for Loan Losses
Total loans	1,110	424
Other income producing property | 90 days past due
Loans and Allowance for Loan Losses
Total loans	262	106
Other income producing property | Total Past Due
Loans and Allowance for Loan Losses
Total loans	3,563	1,409
Other income producing property | Current
Loans and Allowance for Loan Losses
Total loans	670,821	691,320
Consumer loans
Loans and Allowance for Loan Losses
Non-Accruing	3,743	3,456
Total loans	1,259,846	904,657
Consumer loans | 30 days past due
Loans and Allowance for Loan Losses
Total loans	18,488	2,672
Consumer loans | 60 days past due
Loans and Allowance for Loan Losses
Total loans	10,963	840
Consumer loans | 90 days past due
Loans and Allowance for Loan Losses
Total loans		1
Consumer loans | Total Past Due
Loans and Allowance for Loan Losses
Total loans	29,451	3,513
Consumer loans | Current
Loans and Allowance for Loan Losses
Total loans	1,226,652	897,688
Other loans
Loans and Allowance for Loan Losses
Total loans	3,516	23,583
Other loans | Current
Loans and Allowance for Loan Losses
Total loans	3,516	23,583
Commercial loans
Loans and Allowance for Loan Losses
Total loans	20,639,107	17,476,982
Commercial loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	1,669,266	1,342,755
Commercial loans | Commercial non-owner occupied
Loans and Allowance for Loan Losses
Non-Accruing	21,314	19,909
Total loans	7,964,470	6,735,699
Commercial loans | Commercial non-owner occupied | 30 days past due
Loans and Allowance for Loan Losses
Total loans	10,035	3,591
Commercial loans | Commercial non-owner occupied | 60 days past due
Loans and Allowance for Loan Losses
Total loans	586	2,110
Commercial loans | Commercial non-owner occupied | 90 days past due
Loans and Allowance for Loan Losses
Total loans		96
Commercial loans | Commercial non-owner occupied | Total Past Due
Loans and Allowance for Loan Losses
Total loans	10,621	5,797
Commercial loans | Commercial non-owner occupied | Current
Loans and Allowance for Loan Losses
Total loans	7,932,535	6,709,993
Commercial loans | Commercial owner occupied real estate loan
Loans and Allowance for Loan Losses
Non-Accruing	30,914	14,532
Total loans	5,426,216	4,970,116
Commercial loans | Commercial owner occupied real estate loan | 30 days past due
Loans and Allowance for Loan Losses
Total loans	2,901	2,756
Commercial loans | Commercial owner occupied real estate loan | 60 days past due
Loans and Allowance for Loan Losses
Total loans	1,318	1,732
Commercial loans | Commercial owner occupied real estate loan | 90 days past due
Loans and Allowance for Loan Losses
Total loans	294	626
Commercial loans | Commercial owner occupied real estate loan | Total Past Due
Loans and Allowance for Loan Losses
Total loans	4,513	5,114
Commercial loans | Commercial owner occupied real estate loan | Current
Loans and Allowance for Loan Losses
Total loans	5,390,789	4,950,470
Commercial loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Total loans	30,839	30,043
Commercial loans | Commercial and industrial
Loans and Allowance for Loan Losses
Total loans	4,977,737	3,761,133
Commercial loans | Other income producing property
Loans and Allowance for Loan Losses
Total loans	567,063	613,653
Commercial loans | Other loans
Loans and Allowance for Loan Losses
Total loans	3,516	23,583
Consumer portfolio loans
Loans and Allowance for Loan Losses
Total loans	8,197,196	6,451,184
Consumer portfolio loans | 30 days past due
Loans and Allowance for Loan Losses
Total loans	28,262	10,878
Consumer portfolio loans | 60 days past due
Loans and Allowance for Loan Losses
Total loans	14,637	4,157
Consumer portfolio loans | 90 days past due
Loans and Allowance for Loan Losses
Total loans	10,452	11,532
Consumer portfolio loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	881,286	686,461
Consumer portfolio loans | Construction and land development | 30 days past due
Loans and Allowance for Loan Losses
Total loans	137	24
Consumer portfolio loans | Construction and land development | 60 days past due
Loans and Allowance for Loan Losses
Total loans	300	12
Consumer portfolio loans | Construction and land development | 90 days past due
Loans and Allowance for Loan Losses
Total loans	157	104
Consumer portfolio loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Total loans	4,698,951	3,608,321
Consumer portfolio loans | Consumer Owner Occupied Loans | 30 days past due
Loans and Allowance for Loan Losses
Total loans	5,495	5,024
Consumer portfolio loans | Consumer Owner Occupied Loans | 60 days past due
Loans and Allowance for Loan Losses
Total loans	2,315	1,841
Consumer portfolio loans | Consumer Owner Occupied Loans | 90 days past due
Loans and Allowance for Loan Losses
Total loans	6,774	7,069
Consumer portfolio loans | Home equity loans
Loans and Allowance for Loan Losses
Total loans	1,247,330	1,168,594
Consumer portfolio loans | Home equity loans | 30 days past due
Loans and Allowance for Loan Losses
Total loans	3,620	2,909
Consumer portfolio loans | Home equity loans | 60 days past due
Loans and Allowance for Loan Losses
Total loans	855	942
Consumer portfolio loans | Home equity loans | 90 days past due
Loans and Allowance for Loan Losses
Total loans	1,307	2,712
Consumer portfolio loans | Other income producing property
Loans and Allowance for Loan Losses
Total loans	109,783	83,151
Consumer portfolio loans | Other income producing property | 30 days past due
Loans and Allowance for Loan Losses
Total loans	165	90
Consumer portfolio loans | Other income producing property | 60 days past due
Loans and Allowance for Loan Losses
Total loans		156
Consumer portfolio loans | Other income producing property | 90 days past due
Loans and Allowance for Loan Losses
Total loans	126	14
Consumer portfolio loans | Consumer loans
Loans and Allowance for Loan Losses
Total loans	1,259,846	904,657
Consumer portfolio loans | Consumer loans | 30 days past due
Loans and Allowance for Loan Losses
Total loans	18,845	2,831
Consumer portfolio loans | Consumer loans | 60 days past due
Loans and Allowance for Loan Losses
Total loans	11,167	1,206
Consumer portfolio loans | Consumer loans | 90 days past due
Loans and Allowance for Loan Losses
Total loans	$ 2,088	$ 1,633

Loans - Nonaccrual loans (Detai

Loans - Nonaccrual loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Loans and Allowance for Loan Losses
Total loans on nonaccrual status	$ 96,240	$ 75,418
Greater than 90 Days Accruing	3,788
Non-accrual with no allowance	29,690
Other income producing property
Loans and Allowance for Loan Losses
Total loans on nonaccrual status	2,462	4,075
Greater than 90 Days Accruing	262
Commercial loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans on nonaccrual status	460	1,567
Greater than 90 Days Accruing	21
Non-accrual with no allowance	145
Commercial loans | Commercial non-owner occupied
Loans and Allowance for Loan Losses
Total loans on nonaccrual status	21,314	19,909
Non-accrual with no allowance	6,574
Commercial loans | Commercial owner occupied real estate loan
Loans and Allowance for Loan Losses
Total loans on nonaccrual status	30,914	14,532
Greater than 90 Days Accruing	294
Non-accrual with no allowance	15,578
Commercial loans | Commercial and industrial
Loans and Allowance for Loan Losses
Total loans on nonaccrual status	13,839	7,441
Greater than 90 Days Accruing	3,211
Non-accrual with no allowance	5,796
Consumer portfolio loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Total loans on nonaccrual status	17,186	18,183
Consumer portfolio loans | Home equity loans
Loans and Allowance for Loan Losses
Total loans on nonaccrual status	6,322	6,255
Non-accrual with no allowance	1,597
Consumer portfolio loans | Consumer loans
Loans and Allowance for Loan Losses
Total loans on nonaccrual status	$ 3,743	$ 3,456

Loans - Collateral Dependent Lo

Loans - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Loans and Allowance for Loan Losses
Decrease in overall collateral dependent loans	$ (13,500)
Commercial non-owner occupied
Loans and Allowance for Loan Losses
Collateral dependent loans	28,867	$ 15,380
Collateral Coverage	41,152	28,238
Commercial non-owner occupied | Hotel
Loans and Allowance for Loan Losses
Collateral dependent loans		1,822
Collateral Coverage		$ 4,100
Collateral Coverage (as a percent)		225%
Commercial non-owner occupied | Other
Loans and Allowance for Loan Losses
Collateral dependent loans	6,574	$ 6,949
Collateral Coverage	$ 10,900	$ 9,630
Collateral Coverage (as a percent)	166%	139%
Commercial owner occupied real estate loan | Church
Loans and Allowance for Loan Losses
Collateral dependent loans		$ 1,953
Collateral Coverage		$ 2,308
Collateral Coverage (as a percent)		118%
Commercial owner occupied real estate loan | Other
Loans and Allowance for Loan Losses
Collateral dependent loans	$ 15,578	$ 4,656
Collateral Coverage	$ 23,135	$ 12,200
Collateral Coverage (as a percent)	149%	262%
Commercial and industrial | Other
Loans and Allowance for Loan Losses
Collateral dependent loans	$ 5,163
Collateral Coverage	$ 5,446
Collateral Coverage (as a percent)	105%
Home equity loans | Residential 1-4 family dwelling
Loans and Allowance for Loan Losses
Collateral dependent loans	$ 1,552
Collateral Coverage	$ 1,671
Collateral Coverage (as a percent)	108%

Loans - Loans Designated as TDR

Loans - Loans Designated as TDRs (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) loan	Sep. 30, 2021 USD ($) loan	Sep. 30, 2022 USD ($) loan	Sep. 30, 2021 USD ($) loan
Allowance for Credit Losses
Number of loans	0	0	22	2
Pre-Modification Amortized Cost	$ 9,999,000		$ 11,521,000	$ 250,000
Post-Modification Amortized Cost	9,999,000		11,521,000	250,000
Balance of accruing TDRs	12,200,000	$ 14,400,000	12,200,000	14,400,000
Remaining availability under commitments to lend additional funds on restructured loans	599,000	447,000,000,000	599,000	447,000,000,000
Specific reserve associated with restructured loans that subsequently defaulted	$ 12,300,000	$ 1,700,000	$ 12,300,000	$ 1,700,000
Interest rate modification
Allowance for Credit Losses
Number of loans | loan	5		14	1
Pre-Modification Amortized Cost	$ 5,485,000		$ 6,465,000	$ 212,000
Post-Modification Amortized Cost	$ 5,485,000		$ 6,465,000	$ 212,000
Term modification
Allowance for Credit Losses
Number of loans | loan	6		8	1
Pre-Modification Amortized Cost	$ 4,514,000		$ 5,056,000	$ 38,000
Post-Modification Amortized Cost	$ 4,514,000		$ 5,056,000	$ 38,000
Construction and land development | Term modification
Allowance for Credit Losses
Number of loans | loan			1
Pre-Modification Amortized Cost			$ 133,000
Post-Modification Amortized Cost			$ 133,000
Commercial non-owner occupied | Interest rate modification
Allowance for Credit Losses
Number of loans | loan	2		3
Pre-Modification Amortized Cost	$ 2,321,000		$ 2,498,000
Post-Modification Amortized Cost	$ 2,321,000		$ 2,498,000
Commercial non-owner occupied | Term modification
Allowance for Credit Losses
Number of loans | loan	1		1
Pre-Modification Amortized Cost	$ 375,000		$ 375,000
Post-Modification Amortized Cost	$ 375,000		$ 375,000
Commercial owner occupied real estate loan | Interest rate modification
Allowance for Credit Losses
Number of loans | loan	2		3
Pre-Modification Amortized Cost	$ 2,629,000		$ 2,855,000
Post-Modification Amortized Cost	$ 2,629,000		$ 2,855,000
Commercial owner occupied real estate loan | Term modification
Allowance for Credit Losses
Number of loans | loan	2		3
Pre-Modification Amortized Cost	$ 1,042,000		$ 1,451,000
Post-Modification Amortized Cost	$ 1,042,000		$ 1,451,000
Consumer Owner Occupied Loans | Interest rate modification
Allowance for Credit Losses
Number of loans | loan			1
Pre-Modification Amortized Cost			$ 96,000
Post-Modification Amortized Cost			$ 96,000
Commercial and industrial | Interest rate modification
Allowance for Credit Losses
Number of loans | loan	1		5
Pre-Modification Amortized Cost	$ 535,000		$ 905,000
Post-Modification Amortized Cost	$ 535,000		$ 905,000
Commercial and industrial | Term modification
Allowance for Credit Losses
Number of loans | loan	3		3	1
Pre-Modification Amortized Cost	$ 3,097,000		$ 3,097,000	$ 38,000
Post-Modification Amortized Cost	$ 3,097,000		$ 3,097,000	$ 38,000
Other income producing property | Interest rate modification
Allowance for Credit Losses
Number of loans | loan			2	1
Pre-Modification Amortized Cost			$ 111,000	$ 212,000
Post-Modification Amortized Cost			$ 111,000	$ 212,000

Loans - Changes in Status of Lo

Loans - Changes in Status of Loans (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) loan
Allowance for Credit Losses
Paying under restructured terms - Number of Loans	25
Paying under restructured terms - Amortized Cost | $	$ 12,101
Foreclosures and Defaults - Number of Loans	0
Interest rate modification
Allowance for Credit Losses
Paying under restructured terms - Number of Loans	16
Paying under restructured terms - Amortized Cost | $	$ 6,747
Term modification
Allowance for Credit Losses
Paying under restructured terms - Number of Loans	9
Paying under restructured terms - Amortized Cost | $	$ 5,354

Allowance for Credit Losses (_3

Allowance for Credit Losses (ACL) - Disaggregated analysis of the changes in allowance for credit losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Allowance for credit losses
Balance at beginning of period	$ 319,708	$ 350,401	$ 301,807	$ 457,309
Charge-offs	(7,126)	(3,847)	(18,779)	(12,883)
Recoveries	8,388	3,801	15,379	10,744
Net (charge-offs) recoveries	1,262	(46)	(3,400)	(2,139)
Provision (recovery)	3,428	(36,211)	(1,464)	(141,026)
Balance at end of period	324,398	314,144	324,398	314,144
Quantitative allowance
Collectively evaluated	309,245	297,728	309,245	297,728
Individually evaluated	13,278	1,726	13,278	1,726
Total quantitative allowance	322,523	299,454	322,523	299,454
Qualitative allowance	1,875	14,690	1,875	14,690
Unfunded Commitment
Allowance for credit losses
Provision (recovery)	20,000	(2,700)	22,500	(15,100)
Initial PCD Allowance
Allowance for credit losses
Balance at end of period	13,758		13,758
Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	13,697		13,697
Residential Mortgage Sr.
Allowance for credit losses
Balance at beginning of period	55,707	55,820	47,036	63,561
Charge-offs	(50)	(15)	(169)	(204)
Recoveries	376	332	1,131	1,103
Net (charge-offs) recoveries	326	317	962	899
Provision (recovery)	11,987	(4,587)	18,859	(12,910)
Balance at end of period	68,020	51,550	68,020	51,550
Quantitative allowance
Collectively evaluated	67,765	48,411	67,765	48,411
Individually evaluated	233	77	233	77
Total quantitative allowance	67,998	48,488	67,998	48,488
Qualitative allowance	22	3,062	22	3,062
Residential Mortgage Sr. | Initial PCD Allowance
Allowance for credit losses
Balance at end of period	811		811
Residential Mortgage Sr. | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	352		352
Residential Mortgage Jr.
Allowance for credit losses
Balance at beginning of period	533	825	611	1,238
Charge-offs			(19)
Recoveries	30	48	195	131
Net (charge-offs) recoveries	30	48	176	131
Provision (recovery)	(40)	(174)	(290)	(670)
Balance at end of period	523	699	523	699
Quantitative allowance
Collectively evaluated	523	699	523	699
Total quantitative allowance	523	699	523	699
Residential Mortgage Jr. | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	26		26
HELOC
Allowance for credit losses
Balance at beginning of period	16,918	14,550	13,325	16,698
Charge-offs	(23)	(149)	(444)	(835)
Recoveries	3,151	720	3,803	1,903
Net (charge-offs) recoveries	3,128	571	3,359	1,068
Provision (recovery)	(3,980)	(204)	(750)	(2,849)
Balance at end of period	16,066	14,917	16,066	14,917
Quantitative allowance
Collectively evaluated	13,402	13,307	13,402	13,307
Individually evaluated	2,654	959	2,654	959
Total quantitative allowance	16,056	14,266	16,056	14,266
Qualitative allowance	10	651	10	651
HELOC | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	132		132
Residential Construction
Allowance for credit losses
Balance at beginning of period	7,565	4,488	4,997	4,914
Recoveries	2	2	7	3
Net (charge-offs) recoveries	2	2	7	3
Provision (recovery)	763	295	3,324	(132)
Balance at end of period	8,330	4,785	8,330	4,785
Quantitative allowance
Collectively evaluated	8,330	4,756	8,330	4,756
Total quantitative allowance	8,330	4,756	8,330	4,756
Qualitative allowance		29		29
Residential Construction | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	2		2
Other C&D
Allowance for credit losses
Balance at beginning of period	27,730	45,488	37,593	67,197
Charge-offs			(4)	(87)
Recoveries	280	748	924	1,178
Net (charge-offs) recoveries	280	748	920	1,091
Provision (recovery)	3,798	(10,337)	(8,678)	(32,389)
Balance at end of period	31,808	35,899	31,808	35,899
Quantitative allowance
Collectively evaluated	31,524	35,893	31,524	35,893
Individually evaluated	284	6	284	6
Total quantitative allowance	31,808	35,899	31,808	35,899
Other C&D | Initial PCD Allowance
Allowance for credit losses
Balance at end of period	86		86
Other C&D | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	1,887		1,887
Consumer
Allowance for credit losses
Balance at beginning of period	24,752	25,697	23,149	26,562
Charge-offs	(2,742)	(2,366)	(7,527)	(6,001)
Recoveries	573	577	1,765	1,618
Net (charge-offs) recoveries	(2,169)	(1,789)	(5,762)	(4,383)
Provision (recovery)	4,221	332	9,366	2,061
Balance at end of period	26,804	24,240	26,804	24,240
Quantitative allowance
Collectively evaluated	26,804	21,509	26,804	21,509
Total quantitative allowance	26,804	21,509	26,804	21,509
Qualitative allowance		2,731		2,731
Consumer | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	51		51
Multifamily
Allowance for credit losses
Balance at beginning of period	2,458	5,883	4,921	7,887
Recoveries				3
Net (charge-offs) recoveries				3
Provision (recovery)	666	(1,299)	(2,223)	(3,306)
Balance at end of period	3,124	4,584	3,124	4,584
Quantitative allowance
Collectively evaluated	3,124	4,584	3,124	4,584
Total quantitative allowance	3,124	4,584	3,124	4,584
Multifamily | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	426		426
Municipal
Allowance for credit losses
Balance at beginning of period	703	1,063	565	1,510
Provision (recovery)	(1)	(554)	137	(1,001)
Balance at end of period	702	509	702	509
Quantitative allowance
Collectively evaluated	702	509	702	509
Total quantitative allowance	702	509	702	509
CRE Owner Occupied
Allowance for credit losses
Balance at beginning of period	64,688	75,492	61,794	97,104
Charge-offs	(1,353)	(4)	(1,802)	(2,052)
Recoveries	569	332	977	796
Net (charge-offs) recoveries	(784)	328	(825)	(1,256)
Provision (recovery)	(9,745)	(10,611)	(11,738)	(30,639)
Balance at end of period	54,159	65,209	54,159	65,209
Quantitative allowance
Collectively evaluated	46,443	62,969	46,443	62,969
Individually evaluated	7,102	377	7,102	377
Total quantitative allowance	53,545	63,346	53,545	63,346
Qualitative allowance	614	1,863	614	1,863
CRE Owner Occupied | Initial PCD Allowance
Allowance for credit losses
Balance at end of period	2,409		2,409
CRE Owner Occupied | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	2,519		2,519
Non Owner Occupied CRE
Allowance for credit losses
Balance at beginning of period	85,169	90,404	79,649	124,421
Charge-offs	(8)	(241)	(368)	(776)
Recoveries	29	173	402	905
Net (charge-offs) recoveries	21	(68)	34	129
Provision (recovery)	(8,937)	(7,458)	(6,127)	(41,672)
Balance at end of period	76,253	82,878	76,253	82,878
Quantitative allowance
Collectively evaluated	74,978	79,302	74,978	79,302
Individually evaluated	765		765
Total quantitative allowance	75,743	79,302	75,743	79,302
Qualitative allowance	510	3,576	510	3,576
Non Owner Occupied CRE | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	2,697		2,697
C & I
Allowance for credit losses
Balance at beginning of period	33,485	30,691	28,167	46,217
Charge-offs	(2,950)	(1,072)	(8,446)	(2,928)
Recoveries	3,378	869	6,175	3,104
Net (charge-offs) recoveries	428	(203)	(2,271)	176
Provision (recovery)	4,696	(1,614)	(3,344)	(17,519)
Balance at end of period	38,609	28,874	38,609	28,874
Quantitative allowance
Collectively evaluated	35,650	25,789	35,650	25,789
Individually evaluated	2,240	307	2,240	307
Total quantitative allowance	37,890	26,096	37,890	26,096
Qualitative allowance	719	$ 2,778	719	$ 2,778
C & I | Initial PCD Allowance
Allowance for credit losses
Balance at end of period	10,452		10,452
C & I | Initial Non PCD Allowance
Allowance for credit losses
Balance at end of period	$ 5,605		$ 5,605

Other Real Estate Owned and B_3

Other Real Estate Owned and Bank Premises Held for Sale (Details)	9 Months Ended
	Sep. 30, 2022 USD ($) property	Dec. 31, 2021 property
OREO and Bank Premises
Balance at the beginning of the period	$ 12,314,000
Additions, net	22,892,000
Write-downs	(226,000)
Sold	(7,777,000)
Balance at the end of the period	$ 27,203,000
Number of properties held | property	12	12
Number of properties premises held for sale | property	28	9
Residential real estate consumer mortgage loans in foreclosure, carrying value	$ 4,000,000
OREO.
OREO and Bank Premises
Balance at the beginning of the period	2,736,000
Additions, net	1,889,000
Write-downs	(115,000)
Sold	(2,350,000)
Balance at the end of the period	2,160,000
Bank Premises Held for Sale
OREO and Bank Premises
Balance at the beginning of the period	9,578,000
Additions, net	21,003,000
Write-downs	(111,000)
Sold	(5,427,000)
Balance at the end of the period	25,043,000
Residential real estate
OREO and Bank Premises
Other Real Estate In Foreclosure	$ 311,000

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Right to use asset	$ 113,400	$ 110,300
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
Lease Liability	$ 121,111	$ 115,900
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other Liabilities.	Other Liabilities.
Existence of option to extend	true
Lessee, Operating Leases Liability Not Yet Commenced	$ 0
Maximum
Lessee, Lease, Description [Line Items]
Renewal term	22 years

Leases - Lease cost and other i

Leases - Lease cost and other information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Lease Cost Components:
Amortization of ROU assets - finance leases	$ 117	$ 117	$ 350	$ 350
Interest on lease liabilities - finance leases	12	14	37	43
Operating lease cost (cost resulting from lease payments)	4,550	4,292	13,419	12,977
Short-term lease cost	218	116	592	327
Variable lease cost (cost excluded from lease payments)	615	783	1,813	2,073
Total lease cost	5,512	5,322	16,211	15,770
Supplemental Cash Flow and Other Information Related to Leases:
Finance lease - operating cash flows	12	14	37	43
Finance lease - financing cash flows	109	107	325	320
Operating lease - operating cash flows (fixed payments)	4,356	4,127	12,982	12,440
Operating lease - operating cash flows (net change asset/liability)	$ (3,466)	(3,215)	(10,313)	(9,691)
New ROU assets - operating leases		$ 4,196	$ 12,616	$ 5,494
Weighted - average remaining lease term (years) - finance leases	5 years 8 months 1 day	6 years 7 months 28 days	5 years 8 months 1 day	6 years 7 months 28 days
Weighted - average remaining lease term (years) - Operating leases	10 years 1 month 17 days	10 years 11 months 15 days	10 years 1 month 17 days	10 years 11 months 15 days
Weighted - average discount rate - finance leases	1.70%	1.70%	1.70%	1.70%
Weighted - average discount rate - Operating leases	3%	3.30%	3%	3.30%
Maturity Analysis of Lease Liabilities:
2022 (excluding the nine months ended September 30, 2022)	$ 4,303		$ 4,303
2023	16,727		16,727
2024	15,343		15,343
2025	13,902		13,902
2026	13,246		13,246
Thereafter	79,764		79,764
Total undiscounted cash flows	143,285		143,285
Discount on cash flows	(22,174)		(22,174)
Total operating lease liabilities	$ 121,111		$ 121,111		$ 115,900
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other Liabilities.		Other Liabilities.		Other Liabilities.

Deposits - Total deposits (Deta

Deposits - Total deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Deposits
Non-interest bearing checking	$ 13,660,244	$ 11,498,840
Interest-bearing checking	8,741,447	9,018,987
Savings	3,602,560	3,350,547
Money market	9,126,058	8,376,380
Time deposits	2,535,712	2,810,075
Total deposits	$ 37,666,021	$ 35,054,829

Deposits - Certificates of depo

Deposits - Certificates of deposits and Scheduled maturities of time deposits (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Deposits
Aggregate amounts of certificates of deposits in denominations of $250,000 or more	$ 505.8	$ 603.2
Traditional, out-of-market brokered deposits	$ 150.1	$ 325

Retirement Plans - Safe Harbor

Retirement Plans - Safe Harbor plan (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Employees' savings plan
Matching contribution by the company (as a percent)			100%
Expenses recognized under 401(K) plan	$ 3.9	$ 3.7	$ 12	$ 11.8
Minimum
Employees' savings plan
Age of employees to be eligible to participate in the defined contribution plan			21 years
Percentage of annual base compensation that participants may elect to contribute			1%
Maximum
Employees' savings plan
Percentage of annual base compensation that participants may elect to contribute			50%
Percentage of employees salary for which the company contributes a matching contribution			4%
Discretionary matching contribution (as a percent)			2%

Earnings Per Share - Computatio

Earnings Per Share - Computation of basic and diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Basic earnings per common share:
Net income	$ 133,043	$ 122,788	$ 352,547	$ 368,697
Weighted-average basic common shares	75,606	70,066	74,185	70,643
Basic earnings per common share (in dollars per share)	$ 1.76	$ 1.75	$ 4.75	$ 5.22
Diluted earnings per common share:
Net income	$ 133,043	$ 122,788	$ 352,547	$ 368,697
Weighted-average basic common shares	75,606	70,066	74,185	70,643
Effect of dilutive securities (in shares)	576	510	606	465
Weighted-average dilutive shares	76,182	70,576	74,791	71,108
Diluted earnings per common share (in dollars per share)	$ 1.75	$ 1.74	$ 4.71	$ 5.19

Earnings Per Share - Calculatio

Earnings Per Share - Calculation of diluted EPS under Treasury method (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share
Number of shares	57,169	57,169	57,169	60,546
Range of exercise prices, low end of range (in dollars per share)	$ 87.30	$ 87.30	$ 87.30	$ 87.30
Range of exercise prices, high end of range (in dollars per share)	$ 91.35	$ 91.35	$ 91.35	$ 91.35

Share-Based Compensation - Stoc

Share-Based Compensation - Stock Options (Details) - USD ($)	9 Months Ended	23 Months Ended	44 Months Ended	128 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2022
Additional disclosures
Intrinsic value of stock option shares exercised	$ 1,507,000
2004 plan
Additional disclosures
Granted (in shares)				0
2012 plan
Additional disclosures
Granted (in shares)			0
2019 plan
Additional disclosures
Granted (in shares)		0
2020 plan
Share-Based Compensation
Number of shares registered	2,072,245	2,072,245	2,072,245	2,072,245
Stock Options
Share-Based Compensation
Vesting percentage	25%
Vesting period	4 years
Expiration period	10 years
Number of shares
Outstanding at the beginning of the period (in shares)	185,125
Assumed stock options and warrants from ACBI merger (in shares)	23,410
Exercised (in shares)	(37,236)
Expired (in shares)	(2,638)
Outstanding at the end of the period (in shares)	168,661	168,661	168,661	168,661
Exercisable at the end of the period (in shares)	168,661	168,661	168,661	168,661
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 63.03
Assumed stock options and warrants from ACBI merger (in dollars per share)	40.73
Exercised (in dollars per share)	40.78
Expired (in dollars per share)	40.29
Outstanding at the end of the period (in dollars per share)	65.20	$ 65.20	$ 65.20	$ 65.20
Exercisable at the end of the period (in dollars per share)	$ 65.20	$ 65.20	$ 65.20	$ 65.20
Weighted-Average Remaining Contractual Life
Outstanding at the end of the period	3 years 3 months 21 days
Exercisable at the end of the period	3 years 3 months 21 days
Aggregate Intrinsic Value
Outstanding at the end of the period	$ 3,033,000	$ 3,033,000	$ 3,033,000	$ 3,033,000
Exercisable at the end of the period	$ 3,033,000	3,033,000	3,033,000	3,033,000
Additional disclosures
Granted (in shares)	0
Total unrecognized compensation cost related to non vested stock option grants	$ 0	$ 0	$ 0	$ 0

Share-Based Compensation - Rest

Share-Based Compensation - Restricted Stock (Details) - Restricted Stock	9 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Restricted Stock Activity
Outstanding at the beginning of the period (in shares) | shares	3,066
Assumed restricted stock shares from ACBI merger (in shares) | shares	84,224
Vested (in shares) | shares	(29,220)
Forfeited (in shares) | shares	(2,816)
Outstanding at the end of the period (in shares) | shares	55,254
Weighted-Average Grant-Date Fair Value
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 67.31
Assumed restricted stock shares from ACBI merger (in dollars per share) | $ / shares	90
Vested (in dollars per share) | $ / shares	89.91
Forfeited (in dollars per share) | $ / shares	90
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 88.79
Additional disclosures
Total unrecognized compensation cost related to nonvested restricted stock and RSUs granted | $	$ 3,400,000
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 5 months 23 days
Total fair value of shares vested during the period | $	$ 2,321,000
Employees
Share-Based Compensation
Vesting period	4 years

Share-Based Compensation - Re_2

Share-Based Compensation - Restricted Stock Units (Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Restricted Stock Units
RSU Activity
Outstanding at the beginning of the period (in shares)	948,213
Assumed restricted stock units from ACBI merger (in shares)	55,736
Granted (in shares)	333,116
Vested (in shares)	(383,352)
Forfeited (in shares)	(7,287)
Outstanding at the end of the period (in shares)	946,426
Weighted-Average Grant-Date Fair Value
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 67.01
Assumed restricted stock units from ACBI merger (in dollars per share) | $ / shares	87.94
Granted (in dollars per share) | $ / shares	82.34
Vested (in dollars per share) | $ / shares	66.25
Forfeited (in dollars per share) | $ / shares	84.07
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 73.81
Additional disclosures
Options vested (in shares)	54,687
Total unrecognized compensation cost related to nonvested restricted stock and RSUs granted | $	$ 33.6
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 2 months 12 days
Total fair value of shares vested during the period | $	$ 29.1
Performance based restricted stock units
Share-Based Compensation
Performance period	3 years
Other Performance based restricted stock units | Minimum
Share-Based Compensation
Performance period	1 year
Other Performance based restricted stock units | Maximum
Share-Based Compensation
Performance period	2 years
Timed based restricted stock units | Minimum
Share-Based Compensation
Vesting period	2 years
Timed based restricted stock units | Maximum
Share-Based Compensation
Vesting period	4 years
Non-employee directors | Restricted Stock Units
Share-Based Compensation
Vesting period	12 months
2021 and 2022 LTI performance-based RSU grants | Restricted Stock Units
Share-Based Compensation
Vesting period	3 years
Additional disclosures
Additional shares authorized	104,160

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Details) $ in Millions	Sep. 30, 2022 USD ($)
Commitments and Contingent Liabilities
Commitments to extend credit and standby letters of credit	$ 10,900
Liability Recorded for Expected Credit Losses on Unfunded Commitments	$ 53

Fair Value - Assets and liabili

Fair Value - Assets and liabilities measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Fair Value
Percentage of loans individually evaluated based on fair value of collateral	60%
Assets
Derivative financial instruments	$ 1,100,000		$ 408,800
Trading securities	51,940		77,689
Securities available for sale	5,369,610		5,193,478
SBA servicing assets		$ 7,000
Liabilities
Derivative financial instruments	1,100,000		408,800
U.S. Treasuries
Assets
Securities available for sale	264,425
U.S. Government agencies
Assets
Trading securities	12,017		5,154
Securities available for sale	218,623		97,117
Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Assets
Trading securities	11,556		6,853
Securities available for sale	1,730,067		1,831,039
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Assets
Trading securities	3,116		29,667
Securities available for sale	1,027,776		1,207,241
State and municipal obligations
Assets
Trading securities	18,060		20,798
Securities available for sale	1,003,318		812,689
Corporate securities.
Assets
Securities available for sale	33,353		18,734
Significant Other Observable Inputs (Level 2)
Assets
Loans held for sale	34,477		191,723
Trading securities	51,940		77,689
Significant Unobservable Inputs (Level 3)
Assets
Mortgage servicing rights	90,459		65,620
SBA servicing assets	6,981
Changes in fair value of assets
Changes in hierarchy classifications of Level 3 assets	0
Changes in hierarchy classifications of Level 3 liabilities	0
Recurring basis
Assets
Derivative financial instruments	1,083,803		414,742
Loans held for sale	34,477		191,723
Trading securities	51,940		77,689
Securities available for sale	5,369,610		5,193,478
Mortgage servicing rights	90,459		65,620
SBA servicing assets	6,981
Fair value of Assets, Total	6,637,270		5,943,252
Liabilities
Derivative financial instruments	1,082,948		410,137
Recurring basis | U.S. Treasuries
Assets
Securities available for sale	264,425
Recurring basis | U.S. Government agencies
Assets
Securities available for sale	218,623		97,117
Recurring basis | Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Assets
Securities available for sale	1,730,067		1,831,039
Recurring basis | Residential Collateralized Mortgage-Obligations Issued By U.S. Government Agencies Or Sponsored Enterprises [Member]
Assets
Securities available for sale	627,812		725,995
Recurring basis | Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Assets
Securities available for sale	1,027,776		1,207,241
Recurring basis | State and municipal obligations
Assets
Securities available for sale	1,003,318		812,689
Recurring basis | Mortgage-backed securities
Assets
Securities available for sale	464,236		500,663
Recurring basis | Corporate securities.
Assets
Securities available for sale	33,353		18,734
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets
Derivative financial instruments	1,083,803		414,742
Loans held for sale	34,477		191,723
Trading securities	51,940		77,689
Securities available for sale	5,369,610		5,193,478
Fair value of Assets, Total	6,539,830		5,877,632
Liabilities
Derivative financial instruments	1,082,948		410,137
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Treasuries
Assets
Securities available for sale	264,425
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Government agencies
Assets
Securities available for sale	218,623		97,117
Recurring basis | Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Assets
Securities available for sale	1,730,067		1,831,039
Recurring basis | Significant Other Observable Inputs (Level 2) | Residential Collateralized Mortgage-Obligations Issued By U.S. Government Agencies Or Sponsored Enterprises [Member]
Assets
Securities available for sale	627,812		725,995
Recurring basis | Significant Other Observable Inputs (Level 2) | Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Assets
Securities available for sale	1,027,776		1,207,241
Recurring basis | Significant Other Observable Inputs (Level 2) | State and municipal obligations
Assets
Securities available for sale	1,003,318		812,689
Recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities
Assets
Securities available for sale	464,236		500,663
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate securities.
Assets
Securities available for sale	33,353		18,734
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets
Mortgage servicing rights	90,459		65,620
SBA servicing assets	6,981
Fair value of Assets, Total	$ 97,440		$ 65,620
Changes in fair value of assets
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue from Contract with Customer, Excluding Assessed Tax
Unrealized losses included in accumulated other comprehensive income related to Level 3 financial assets and liabilities	$ 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage Servicing Rights
Changes in fair value of assets
Fair value of assets at the beginning of the period	65,620
Servicing assets that resulted from transfers of financial assets	14,617
Changes in fair value assets due to valuation inputs or assumptions	18,274
Changes in fair value due to decay	(8,052)
Fair value of assets at the end of the period	$ 90,459

Fair Value - Assets and liabi_2

Fair Value - Assets and liabilities measured at fair value on a nonrecurring basis (Details) $ in Thousands	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Fair Value
OREO	$ 2,160	$ 2,736
Individually evaluated loans	96,240	75,418
Nonrecurring basis | Fair Value
Fair Value
OREO	2,160	2,736
Bank property held for sale	25,043	9,578
Individually evaluated loans	52,368	20,802
Nonrecurring basis | Significant Unobservable Inputs (Level 3)
Fair Value
OREO	2,160	2,736
Bank property held for sale	25,043	9,578
Individually evaluated loans	$ 52,368	$ 20,802
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | Impaired loans
Quantitative Information about Level 3 Fair Value Measurements
Long-term Debt, Valuation Technique [Extensible List]	us-gaap:MarketApproachValuationTechniqueMember, us-gaap:ValuationTechniqueDiscountedCashFlowMember	us-gaap:MarketApproachValuationTechniqueMember, us-gaap:ValuationTechniqueDiscountedCashFlowMember
Long-term Debt, Measurement Input [Extensible List]	us-gaap:MeasurementInputDiscountRateMember	us-gaap:MeasurementInputDiscountRateMember
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | Impaired loans | Weighted average
Quantitative Information about Level 3 Fair Value Measurements
Discount rate (as a percent)	25	9
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | OREO
Quantitative Information about Level 3 Fair Value Measurements
Long-term Debt, Valuation Technique [Extensible List]	us-gaap:MarketApproachValuationTechniqueMember	us-gaap:MarketApproachValuationTechniqueMember
Long-term Debt, Measurement Input [Extensible List]	us-gaap:MeasurementInputCostToSellMember, us-gaap:MeasurementInputDiscountRateMember	us-gaap:MeasurementInputCostToSellMember, us-gaap:MeasurementInputDiscountRateMember
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | OREO | Weighted average
Quantitative Information about Level 3 Fair Value Measurements
Discount rate (as a percent)	15	24

Fair Value - Estimated fair val

Fair Value - Estimated fair value and related carrying amount, of the Company's financial instruments (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021
Financial assets:
Trading securities	$ 51,940			$ 77,689
SBA servicing assets			$ 7,000
Financial liabilities:
Other derivative financial instruments (mortgage banking related)	668,812	$ (319,824)
Carrying Amount
Financial assets:
Cash and cash equivalents	2,809,695			6,843,147
Trading securities	51,940			77,689
Investment securities	8,287,543			7,173,947
Loans held for sale	34,477			191,723
Loans, net of allowance for credit losses	28,511,905			23,626,359
Accrued interest receivable	124,553			90,069
Mortgage servicing rights	90,459			65,620
SBA servicing assets	6,981
Interest rate swap - non-designated hedge	1,081,768			408,776
Other derivative financial instruments (mortgage banking related)	$ 2,035			$ 5,966
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Derivative Asset, Noncurrent			Derivative Asset, Noncurrent
Financial liabilities:
Deposits	$ 37,666,021			$ 35,054,829
Federal funds purchased and securities sold under agreements to repurchase	557,802			781,239
Other borrowings	392,368			327,066
Accrued interest payable	6,354			3,345
Interest rate swap - non-designated hedge	1,081,267			410,137
Other derivative financial instruments (mortgage banking related)	1,681
Fair Value
Financial assets:
Cash and cash equivalents	2,809,695			6,843,147
Trading securities	51,940			77,689
Investment securities	7,848,527			7,132,110
Loans held for sale	34,477			191,723
Loans, net of allowance for credit losses	28,271,062			23,921,372
Accrued interest receivable	124,553			90,069
Mortgage servicing rights	90,459			65,620
Interest rate swap - non-designated hedge	1,081,768			408,776
Other derivative financial instruments (mortgage banking related)	2,035			5,966
Financial liabilities:
Deposits	37,578,773			35,050,516
Federal funds purchased and securities sold under agreements to repurchase	557,802			781,239
Other borrowings	379,992			334,640
Accrued interest payable	6,354			3,345
Interest rate swap - non-designated hedge	1,081,267			410,137
Other derivative financial instruments (mortgage banking related)	1,681
Commitments to extend credit | Fair Value
Financial liabilities:
Commitments to extend credit	(92,429)			93,501
Quoted Prices In Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	2,809,695			6,843,147
Investment securities	179,755			160,568
Significant Other Observable Inputs (Level 2)
Financial assets:
Trading securities	51,940			77,689
Investment securities	7,668,772			6,971,542
Loans held for sale	34,477			191,723
Accrued interest receivable	28,508			19,241
Interest rate swap - non-designated hedge	1,081,768			408,776
Other derivative financial instruments (mortgage banking related)	2,035			5,966
Financial liabilities:
Deposits	37,578,773			35,050,516
Federal funds purchased and securities sold under agreements to repurchase	557,802			781,239
Other borrowings	379,992			334,640
Accrued interest payable	6,354			3,345
Interest rate swap - non-designated hedge	1,081,267			410,137
Other derivative financial instruments (mortgage banking related)	1,681
Significant Other Observable Inputs (Level 2) | Commitments to extend credit
Financial liabilities:
Commitments to extend credit	(92,429)			93,501
Significant Unobservable Inputs (Level 3)
Financial assets:
Loans, net of allowance for credit losses	28,271,062			23,921,372
Accrued interest receivable	96,045			70,828
Mortgage servicing rights	90,459			$ 65,620
SBA servicing assets	$ 6,981

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Changes in components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period			$ (21,146)
Net comprehensive (loss) income	$ (225,574)	$ (24,656)	(695,312)	$ (48,109)
Balance at the end of the period	(716,458)		(716,458)
Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period	57	(151)	57	(151)
Balance at the end of the period	57	(151)	57	(151)
Unrealized Gains and (Losses) on Securities Available for Sale
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period	(490,941)	24,287	(21,203)	47,740
Other comprehensive loss before reclassifications	(225,551)	(24,607)	(695,289)	(48,033)
Amounts reclassified from accumulated other comprehensive loss	(23)	(49)	(23)	(76)
Net comprehensive (loss) income	(225,574)	(24,656)	(695,312)	(48,109)
Balance at the end of the period	(716,515)	(369)	(716,515)	(369)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period	(490,884)	24,136	(21,146)	47,589
Other comprehensive loss before reclassifications	(225,551)	(24,607)	(695,289)	(48,033)
Amounts reclassified from accumulated other comprehensive loss	(23)	(49)	(23)	(76)
Net comprehensive (loss) income	(225,574)	(24,656)	(695,312)	(48,109)
Balance at the end of the period	$ (716,458)	$ (520)	$ (716,458)	$ (520)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Reclassifications out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Reclassifications out of accumulated other comprehensive income, net of tax
Interest expense	$ (16,601)	$ (11,463)	$ (36,971)	$ (42,352)
Salaries and employee benefits	(139,554)	(136,969)	(414,264)	(414,709)
Provision for income taxes	(38,035)	(30,821)	(98,060)	(100,464)
Net income	133,043	122,788	352,547	368,697
Amount Reclassified from Accumulated Other Comprehensive Loss
Reclassifications out of accumulated other comprehensive income, net of tax
Net income	(23)	(49)	(23)	(76)
Unrealized Gains and (Losses) on Securities Available for Sale | Amount Reclassified from Accumulated Other Comprehensive Loss
Reclassifications out of accumulated other comprehensive income, net of tax
Securities gains (losses), net	(30)	(64)	(30)	(100)
Provision for income taxes	7	15	7	24
Net income	$ (23)	$ (49)	$ (23)	$ (76)

Derivative Financial Instrume_3

Derivative Financial Instruments (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Derivative Financial Instruments
Notional Amount	$ 21,304,743,000		$ 21,304,743,000		$ 21,351,715,000
Estimated Fair Value Gain			$ 1,083,803,000		$ 414,742,000
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]			Noninterest Income, Other		Noninterest Income, Other
Estimated Fair Value Loss			$ 1,082,948,000		$ 410,137,000
Derivative, Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]			Noninterest Income, Other		Noninterest Income, Other
Gain or loss recorded	(3,000)		$ 107,000
Fair value of the interest rate swap derivatives, other assets	1,100,000,000		1,100,000,000		$ 408,800,000
Fair value of the interest rate swap derivatives, other liabilities	1,100,000,000		1,100,000,000		408,800,000
Fair value of the interest rate swap derivatives, net assets and liability	13,000		13,000		5,000
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments
Fair value of forward commitments	(1,082,948,000)		(1,082,948,000)		(410,137,000)
Mortgage loan pipeline
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments
Obligation	77,530,000		77,530,000		264,000,000
Expected closures
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments
Obligation	70,833,000		70,833,000		233,265,000
Cash flow hedge | Borrower
Derivative Financial Instruments
Collateral provided	72,500,000		72,500,000
Cash flow hedge | Counterparty
Derivative Financial Instruments
Collateral provided	116,800,000		116,800,000
Cash flow hedge | Interest-bearing deposits (Liability) | Counterparty
Derivative Financial Instruments
Cash collateral	926,000,000		926,000,000
Interest rate contracts
Derivative Financial Instruments
Notional Amount	21,200,000,000		21,200,000,000		20,800,000,000
Mortgage servicing rights hedging | Non-designated hedges
Derivative Financial Instruments
Notional Amount	27,000,000		27,000,000		205,000,000
Estimated gain (loss) on fair value			(1,700,000)		1,200,000
Mortgage servicing rights hedging | Non-designated hedges | Other Assets and Other Liabilities
Derivative Financial Instruments
Notional Amount	27,000,000		27,000,000		205,000,000
Estimated Fair Value Gain					$ 1,228,000
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]					Noninterest Income, Other
Estimated Fair Value Loss			$ 1,681,000
Derivative, Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]			Noninterest Income, Other
Mortgage loan pipeline commitments hedging
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments
Obligation	(646,000)		$ (646,000)		$ 4,759,000
Mortgage loan pipeline commitments hedging | Non-designated hedges | Other Assets
Derivative Financial Instruments
Notional Amount	83,500,000		83,500,000		324,000,000
Estimated Fair Value Gain			$ 2,035,000		$ 4,738,000
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]			Noninterest Income, Other		Noninterest Income, Other
Forward commitments
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments
Obligation	83,500,000		$ 83,500,000		$ 324,000,000
Fair value of forward commitments	2,681,000		2,681,000		(21,000)
Foreign exchange swaps
Derivative Financial Instruments
Gain or loss recorded	0	$ 0	0	$ 0
Interest rate swap | Fair Value Hedging | Counterparty
Derivative Financial Instruments
Notional Amount	17,800,000		17,800,000		15,700,000
Gain or loss recorded				$ 0
Interest rate swap | Fair Value Hedging | Other Assets and Other Liabilities | Counterparty
Derivative Financial Instruments
Notional Amount	17,800,000		17,800,000		15,716,000
Estimated Fair Value Gain			$ 514,000
Estimated Fair Value Loss					$ 1,355,000
Derivative, Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]			Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent		Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Interest rate swap | Non-designated hedges | Other Assets and Other Liabilities | Borrower
Derivative Financial Instruments
Notional Amount	10,587,773,000		$ 10,587,773,000		$ 10,404,605,000
Estimated Fair Value Gain			$ 2,079,000		$ 408,776,000
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]			Noninterest Income, Other		Noninterest Income, Other
Estimated Fair Value Loss			$ 1,081,267,000		$ 69,998,000
Derivative, Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]			Noninterest Income, Other		Noninterest Income, Other
Interest rate swap | Non-designated hedges | Other Assets and Other Liabilities | Counterparty
Derivative Financial Instruments
Notional Amount	$ 10,588,670,000		$ 10,588,670,000		$ 10,402,394,000
Estimated Fair Value Gain			$ 1,079,175,000
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]			Noninterest Income, Other
Estimated Fair Value Loss					$ 338,784,000
Derivative, Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]			Noninterest Income, Other		Noninterest Income, Other

Capital Ratios (Details)

Capital Ratios (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Jan. 01, 2020	Jan. 01, 2019
Capital ratios
Capital conversion buffer common equity Tier 1 of risk-weighted assets (as a percent)									2.50%
Additional allowance for credit losses for loans	$ 319,708		$ 324,398	$ 301,807	$ 314,144	$ 350,401	$ 457,309
Deferred tax assets			198,647	64,964
Additional reserve for unfunded commitments			53,000
Retained earnings			1,241,413	997,657
Phasing out percentage		25%
Reduction in total risk-based capital	13,000
Common equity Tier 1 to risk-weighted assets
Actual, Capital Amount			$ 3,666,829	$ 3,201,644
Actual, Ratio (as a percent)			11.02%	11.75%
Minimum capital required, Capital Amount			$ 2,328,284	$ 1,906,831
Minimum capital required, Ratio (as a percent)			7%	7%
Required to be considered well capitalized, Capital Amount			$ 2,161,978	$ 1,770,629
Required to be considered well capitalized, Ratio (as a percent)			6.50%	6.50%
Tier I capital to risk-weighted assets
Actual, Capital Amount			$ 3,666,829	$ 3,201,644
Actual, Ratio (as a percent)			0.1102	0.1175
Minimum capital required, Capital Amount			$ 2,827,202	$ 2,315,438
Minimum capital required, Ratio (as a percent)			0.0850	0.0850
Required to be considered well capitalized, Capital Amount			$ 2,660,896	$ 2,179,236
Required to be considered well capitalized, Ratio (as a percent)			0.0800	0.0800
Total capital to risk-weighted assets
Actual, Capital Amount			$ 4,311,208	$ 3,692,674
Actual, Ratio (as a percent)			0.1296	0.1356
Minimum capital required, Capital Amount			$ 3,492,427	$ 2,860,247
Minimum capital required, Ratio (as a percent)			0.1050	0.1050
Required to be considered well capitalized, Capital Amount			$ 3,326,121	$ 2,724,045
Required to be considered well capitalized, Ratio (as a percent)			0.1000	0.1000
Tier I capital to average assets (leverage ratio)
Actual, Capital Amount			$ 3,666,829	$ 3,201,644
Actual, Ratio (as a percent)			0.0833	0.0805
Minimum capital required, Capital Amount			$ 1,760,176	$ 1,590,045
Minimum capital required, Ratio (as a percent)			0.0400	0.0400
Required to be considered well capitalized, Capital Amount			$ 2,200,220	$ 1,987,556
Required to be considered well capitalized, Ratio (as a percent)			0.0500	0.0500
ASU 2016-13
Capital ratios
Additional allowance for credit losses for loans								$ 54,400
Deferred tax assets								12,600
Retained earnings								(44,800)
ASU 2016-13 | Adjustments
Capital ratios
Additional reserve for unfunded commitments								$ 6,400
Subordinated Debt.
Capital ratios
Trust preferred securities redeemed	$ 13,000
SouthState Bank (the Bank)
Common equity Tier 1 to risk-weighted assets
Actual, Capital Amount			$ 3,956,892	$ 3,431,069
Actual, Ratio (as a percent)			11.91%	12.62%
Minimum capital required, Capital Amount			$ 2,325,129	$ 1,902,954
Minimum capital required, Ratio (as a percent)			7%	7%
Required to be considered well capitalized, Capital Amount			$ 2,159,049	$ 1,767,029
Required to be considered well capitalized, Ratio (as a percent)			6.50%	6.50%
Tier I capital to risk-weighted assets
Actual, Capital Amount			$ 3,956,892	$ 3,431,069
Actual, Ratio (as a percent)			0.1191	0.1262
Minimum capital required, Capital Amount			$ 2,823,371	$ 2,310,730
Minimum capital required, Ratio (as a percent)			0.0850	0.0850
Required to be considered well capitalized, Capital Amount			$ 2,657,291	$ 2,174,804
Required to be considered well capitalized, Ratio (as a percent)			0.0800	0.0800
Total capital to risk-weighted assets
Actual, Capital Amount			$ 4,211,272	$ 3,594,099
Actual, Ratio (as a percent)			0.1268	0.1322
Minimum capital required, Capital Amount			$ 3,487,694	$ 2,854,431
Minimum capital required, Ratio (as a percent)			0.1050	0.1050
Required to be considered well capitalized, Capital Amount			$ 3,321,613	$ 2,718,505
Required to be considered well capitalized, Ratio (as a percent)			0.1000	0.1000
Tier I capital to average assets (leverage ratio)
Actual, Capital Amount			$ 3,956,892	$ 3,431,069
Actual, Ratio (as a percent)			0.0900	0.0865
Minimum capital required, Capital Amount			$ 1,759,585	$ 1,587,212
Minimum capital required, Ratio (as a percent)			0.0400	0.0400
Required to be considered well capitalized, Capital Amount			$ 2,199,481	$ 1,984,015
Required to be considered well capitalized, Ratio (as a percent)			0.0500	0.0500
Minimum
Common equity Tier 1 to risk-weighted assets
Actual, Ratio (as a percent)			4.50%
Tier I capital to risk-weighted assets
Required to be considered well capitalized, Ratio (as a percent)			0.06
Total capital to risk-weighted assets
Actual, Ratio (as a percent)			0.04
Tier I capital to average assets (leverage ratio)
Actual, Ratio (as a percent)			0.08

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2022	Mar. 01, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill			$ 1,922,525		$ 1,581,085
Atlantic Capital
Goodwill [Line Items]
Goodwill		$ 342,900		$ 341,440
Goodwill increased	$ 1,500
Intangible assets related to Atlantic Capital acquisition		$ 17,500

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Summary of gross carrying amounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021
Other intangible assets
Gross carrying amount	$ 279,884		$ 279,884			$ 257,874
Accumulated amortization	(154,494)		(154,494)			(129,807)
Net carrying amount	125,390		125,390			$ 128,067
Amortization expense	$ 7,837	$ 8,543	$ 25,178	$ 26,675
Fair value of SBA servicing assets					$ 7,000
Minimum
Other intangible assets
Estimated useful lives			2 years
Maximum
Other intangible assets
Estimated useful lives			15 years

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Amortization expense (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Estimated amortization expense
Net carrying amount	$ 125,390	$ 128,067
Other intangibles, excluding the SBA servicing assets
Estimated amortization expense
December 31, 2022	8,027
March 31, 2023	7,299
June 30, 2023	7,028
September 30, 2023	6,616
December 31, 2023	6,615
Thereafter	82,824
Net carrying amount	$ 118,409

Loan Servicing, Mortgage Orig_3

Loan Servicing, Mortgage Origination, and Loans Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Loans held for sale, loan servicing and mortgage origination
Residential mortgages serviced for others	$ 6,600,000		$ 6,600,000		$ 6,100,000
Contractually specified servicing fees earned	$ 4,200	$ 3,800	$ 12,100	$ 10,500
Contractually Specified Servicing Fee Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax
Mortgage servicing rights	$ 90,459		$ 90,459		$ 65,620
Changes in the fair value of MSRs and its offsetting hedge.
Increase in fair value of MSRs	$ 2,661	$ 1,659	$ 18,274	$ 7,543
Servicing Asset, Fair Value, Change in Fair Value, Valuation Input, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax
Decay of MSRs	$ (2,530)	$ (3,427)	$ (8,052)	$ (11,276)
Loss related to derivatives	(3,572)	(577)	(17,963)	(4,178)
Net effect on statements of income	$ (3,441)	$ (2,345)	$ (7,741)	$ (7,911)
Characteristics and sensitivity analysis of the MSR
Composition of residential loans serviced for others	100%		100%		100%
Weighted average life (in years)			8 years 5 months 4 days		7 years 4 months 6 days
Constant Prepayment rate (CPR) (as a percent)			6.40%		8.40%
Weighted average discount rate (as a percent)			10.20%		9%
Effect on fair value due to change in interest rates:
25 basis point increase	$ 510		$ 510		$ 3,961
50 basis point increase	925		925		7,261
25 basis point decrease	(628)		(628)		(4,371)
50 basis point decrease	(1,389)		(1,389)		(8,966)
Custodial escrow balances maintained in connection with the loan servicing	$ 74,700		$ 74,700		$ 29,600
Fixed-rate mortgage loans
Characteristics and sensitivity analysis of the MSR
Composition of residential loans serviced for others	100%		100%		99.90%
Adjustable-rate mortgage loans
Characteristics and sensitivity analysis of the MSR
Composition of residential loans serviced for others					0.10%

Loan Servicing, Mortgage Orig_4

Loan Servicing, Mortgage Origination, and Loans Held for Sale - Mandatory cash forwards (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Mortgage loan securitizations, mandatory cash forwards, and whole loan sales
Loan sales	$ 272,800	$ 612,500	$ 1,400,000	$ 2,400,000
Loan securitizations and loan sales	$ 216,100	$ 489,800	$ 1,100,000	$ 1,900,000
Percentage of loan securitizations and loan sales	79.20%	80%	77.20%	79.50%
Loans held for sale	$ 34,477		$ 34,477		$ 191,723
Minimum
Mortgage loan securitizations, mandatory cash forwards, and whole loan sales
Loans held for sale, settlement period			15 days
Maximum
Mortgage loan securitizations, mandatory cash forwards, and whole loan sales
Loans held for sale, settlement period			45 days

Repurchase Agreements (Details)

Repurchase Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Secured Debt, Repurchase Agreements
Carrying amount of securities sold under repurchase agreements with customers	$ 344,000	$ 400,000
Carrying amount of the securities pledged to collateralize repurchase agreements	8,287,543	7,173,947
Asset Pledged as Collateral [Member]
Secured Debt, Repurchase Agreements
Carrying amount of the securities pledged to collateralize repurchase agreements	$ 438,500	$ 471,300

Stock Repurchase Program (Detai

Stock Repurchase Program (Details) - $ / shares		9 Months Ended	20 Months Ended
	Apr. 27, 2022	Sep. 30, 2022	Sep. 30, 2022	Jan. 27, 2021
2021 Stock Repurchase Plan
Stock repurchase program
Shares authorized under repurchase program				3,500,000
Number of shares repurchased	370,021	1,312,038	3,129,979
Average price per share		$ 83.99	$ 81.97
Additional shares available for repurchase	4,120,021	370,021	370,021
2022 Stock Repurchase Plan
Stock repurchase program
Shares authorized under repurchase program	3,750,000
Additional shares available for repurchase		4,120,021	4,120,021

Subsequent Events (Details)

Subsequent Events (Details) - $ / shares		3 Months Ended		9 Months Ended
	Oct. 24, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Subsequent Events
Cash dividends declared (in dollars per share)	$ 0.50	$ 0.50	$ 0.49	$ 1.48	$ 1.43