Seacoast Banking Corporation of Florida (SBCF) 10-Q 6 Nov 24 2024 Q3 Quarterly report Financial data

Cover Page

Cover Page	9 Months Ended
	Sep. 30, 2024 shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity File Number	0-13660
Entity Registrant Name	Seacoast Banking Corporation of Florida
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	59-2260678
Entity Address, Address Line One	815 COLORADO AVENUE,
Entity Address, City or Town	STUART
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	34994
City Area Code	(772)
Local Phone Number	287-4000
Title of 12(b) Security	Common Stock
Trading Symbol	SBCF
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	85,441,001
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000730708
Current Fiscal Year End Date	--12-31

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Interest and fees on loans	$ 150,980	$ 149,871	$ 445,367	$ 433,304
Interest and dividends on securities	25,997	21,498	72,612	61,842
Interest on interest bearing deposits and other investments	7,138	8,477	21,650	16,974
Total Interest Income	184,115	179,846	539,629	512,120
Interest on deposits	51,963	38,396	150,816	81,612
Interest on time certificates	19,002	16,461	54,051	36,490
Interest on borrowed money	6,485	5,683	18,595	16,597
Total Interest Expense	77,450	60,540	223,462	134,699
Net Interest Income	106,665	119,306	316,167	377,421
Provision for credit losses	6,273	2,694	12,559	33,528
Net Interest Income after Provision for Credit Losses	100,392	116,612	303,608	343,893
Noninterest income:
Service charges on deposit accounts	5,412	4,648	15,714	13,450
Interchange income	1,911	1,684	5,739	11,444
Wealth management income	3,843	3,138	11,149	9,519
Mortgage banking fees	485	410	1,448	1,412
Insurance agency income	1,399	1,183	4,045	3,444
SBA gains	391	613	1,824	1,184
BOLI income	2,578	2,197	7,438	6,181
Other	7,473	4,307	18,631	15,636
Noninterest income, excluding securities gains (losses)	23,492	18,180	65,988	62,270
Securities gains (losses), net	187	(387)	372	(456)
Total Noninterest Income	23,679	17,793	66,360	61,814
Noninterest expense:
Salaries and wages	40,697	46,431	119,938	139,202
Employee benefits	6,955	7,206	21,705	23,240
Outsourced data processing costs	8,003	8,714	28,331	43,489
Occupancy	7,096	7,758	22,313	24,360
Furniture and equipment	2,060	2,052	6,027	6,664
Marketing	2,729	1,876	8,650	6,161
Legal and professional fees	2,708	2,679	6,841	14,220
FDIC assessments	1,882	2,258	6,171	5,817
Amortization of intangibles	6,002	7,457	18,297	21,838
Other real estate owned expense and net loss on sale	491	274	356	412
Provision for credit losses on unfunded commitments	250	0	751	1,239
Other	5,945	7,210	18,346	22,613
Total Noninterest Expense	84,818	93,915	257,726	309,255
Income Before Income Taxes	39,253	40,490	112,242	96,452
Provision for income taxes	8,602	9,076	25,341	21,962
Net Income	$ 30,651	$ 31,414	$ 86,901	$ 74,490
Net income per share of common stock
Diluted (in dollars per share)	$ 0.36	$ 0.37	$ 1.02	$ 0.89
Basic (in dollars per share)	$ 0.36	$ 0.37	$ 1.03	$ 0.89
Average common shares outstanding
Diluted (in shares)	85,069	85,666	84,915	83,993
Basic (in shares)	84,434	85,142	84,319	83,457

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 30,651	$ 31,414	$ 86,901	$ 74,490
Other comprehensive income (loss):
Unrealized gains (losses) on available-for-sale securities, net of tax expense of $14.4 million and $10.6 million for the three and nine months ended September 30, 2024, respectively, and net of tax benefit of $8.1 million and $9.3 million for the three and nine months ended September 30, 2023, respectively	44,972	(26,065)	33,477	(29,764)
Amortization of unrealized losses on securities transferred to held-to-maturity, net of tax benefit of $3 thousand and $11 thousand for the three and nine months ended September 30, 2024, respectively, and net of tax benefit of $3 thousand and $10 thousand for the three and nine months ended September 30, 2023, respectively	(11)	(11)	(31)	(32)
Reclassification adjustment for losses (gains) included in net income, net of tax benefit of $68 thousand and $1.0 million for the three and nine months ended September 30, 2024, respectively, and net of tax expense of $1 thousand for the nine months ended September 30, 2023	201	0	3,006	(4)
Unrealized (losses) gains on derivatives designated as fair value hedges, net of reclassifications to income, net of tax benefit of $0.8 million and $0.6 million for the three and nine months ended September 30, 2024, respectively, and net of tax expense of $0.2 million and $1.8 million for the three and nine months ended September 30, 2023, respectively	(2,322)	504	(1,744)	5,236
Unrealized gains on derivatives designated as cash flow hedges, net of reclassifications to income, net of tax expense of $43 thousand and $114 thousand for the three and nine months ended September 30, 2023, respectively	0	125	0	326
Total other comprehensive income (loss)	42,840	(25,447)	34,708	(24,238)
Comprehensive Income	$ 73,491	$ 5,967	$ 121,609	$ 50,252

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities, tax (benefit) expense	$ 14,400	$ (8,100)	$ 10,600	$ (9,300)
Amortization of unrealized losses on securities transferred to held-to-maturity, tax expense (benefit)	(3)	(3)	(11)	(10)
Reclassification adjustment for losses (gains) included in net income, tax expense (benefit)	(68)		(1,000)	1
Unrealized gains on derivatives designated as fair value hedges, net of reclassifications, tax expense (benefit)	$ (800)	200	$ (600)	1,800
Unrealized gains on derivatives designated as cash flow hedges, net of reclassifications, tax expense (benefit)		$ 43		$ 114

CONSOLIDATED BALANCE SHEETS (Un

CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets
Cash and due from banks	$ 182,743	$ 167,511
Interest bearing deposits with other banks	454,315	279,671
Total cash and cash equivalents	637,058	447,182
Time deposits with other banks	5,207	5,857
Debt securities:
Securities available-for-sale (at fair value)	2,160,055	1,836,020
Securities held-to-maturity (fair value $538.5 million at September 30, 2024 and $558.4 million at December 31, 2023)	646,050	680,313
Total debt securities	2,806,105	2,516,333
Loans held for sale	11,039	4,391
Loans	10,205,281	10,062,940
Allowance for credit losses	(140,469)	(148,931)
Loans, net of allowance for credit losses	10,064,812	9,914,009
Bank premises and equipment, net	108,776	113,304
Other real estate owned	6,421	7,560
Goodwill	732,417	732,417
Other intangible assets, net	77,431	95,645
Bank owned life insurance	306,379	298,974
Net deferred tax assets	94,820	113,232
Other assets	317,906	331,345
Total Assets	15,168,371	14,580,249
Liabilities
Deposits	12,243,585	11,776,935
Securities sold under agreements to repurchase	210,176	374,573
Federal Home Loan Bank (“FHLB”) borrowings	245,000	50,000
Long-term debt, net	106,800	106,302
Other liabilities	168,960	164,353
Total Liabilities	12,974,521	12,472,163
Shareholders’ Equity
Common stock, par value $0.10 per share, authorized 120,000,000 shares, issued 86,142,157 and outstanding 85,441,001 at September 30, 2024, and authorized 120,000,000, issued 85,480,183 and outstanding 84,861,498 shares at December 31, 2023	8,614	8,486
Additional paid-in capital	1,821,050	1,808,883
Retained earnings	508,036	467,305
Treasury stock	(18,680)	(16,710)
Total shareholders' equity, before accumulated other comprehensive (loss) income, net	2,319,020	2,267,964
Accumulated other comprehensive loss, net	(125,170)	(159,878)
Total Shareholders’ Equity	2,193,850	2,108,086
Total Liabilities and Shareholders’ Equity	$ 15,168,371	$ 14,580,249

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Held to maturity, fair value	$ 538,485	$ 558,359
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	86,142,157	85,480,183
Common stock, shares outstanding (in shares)	85,441,001	84,861,498

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash Flows from Operating Activities
Net income	$ 86,901	$ 74,490
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	6,381	6,090
Accretion of discounts on securities, net	(2,371)	(798)
Amortization of operating lease right-of-use assets	6,148	5,993
Other amortization and accretion, net	(14,678)	(14,952)
Stock based compensation	10,233	10,290
Origination of loans designated for sale	(82,146)	(82,695)
Sale of loans designated for sale	79,187	86,221
Provision for credit losses	12,559	33,528
Deferred income taxes	7,321	(3,348)
(Gains) losses on securities	(372)	456
Gains on sale of loans	(4,251)	(2,993)
Losses (gains) on sale and write-downs of other real estate owned	134	(37)
Losses on disposition of fixed assets and write-downs upon transfer of bank premises to other real estate owned	284	1,755
Changes in operating assets and liabilities, net of effects from acquired companies:
Net decrease in other assets	24,973	5,046
Net increase in other liabilities	4,606	1,684
Net cash provided by operating activities	134,909	120,730
Cash Flows from Investing Activities
Maturities and repayments of debt securities available-for-sale	269,277	153,866
Maturities and repayments of debt securities held-to-maturity	34,361	58,357
Proceeds from sale of debt securities available-for-sale	104,425	30,490
Purchases of debt securities available-for-sale	(651,360)	(28,095)
Maturities and redemptions of time deposits with other banks	4,132	1,492
Purchases of time deposits with other banks	(3,482)	(2,613)
Net new loans and principal repayments	(158,095)	159,298
Proceeds from the sale of loans held for investment	10,905	0
Proceeds from sale of other real estate owned	2,841	577
Proceeds from sale of FHLB and Federal Reserve Bank Stock	11,310	73,473
Purchase of FHLB and Federal Reserve Bank Stock	(20,743)	(90,896)
Proceeds from sale of Visa Class B shares	4,104	0
Net cash from bank acquisitions	0	141,674
Additions to bank premises and equipment	(3,884)	(9,665)
Net cash (used in) provided by investing activities	(396,209)	487,958
Cash Flows from Financing Activities
Net increase in deposits	466,651	6,898
Net (decrease) increase in repurchase agreements	(164,397)	104,421
Net decrease in FHLB borrowings with original maturities of three months or less	0	(220,000)
Repayments of FHLB borrowings with original maturities of more than three months	(160,000)	(75,000)
Proceeds from FHLB borrowings with original maturities of more than three months	355,000	110,000
Stock based employee benefit plans	972	4,316
Repurchase of common stock	(880)	(45)
Dividends paid	(46,170)	(45,236)
Net cash provided by (used in) financing activities	451,176	(114,646)
Net increase in cash and cash equivalents	189,876	494,042
Cash and cash equivalents at beginning of period	447,182	201,940
Cash and cash equivalents at end of period	637,058	695,982
Supplemental disclosure of cash flow information:
Cash paid for interest	219,201	124,927
Cash paid (refunded) for taxes, net	10,888	(7,920)
Recognition of operating lease right-of-use assets, other than through bank acquisitions, net of terminations	0	2,068
Recognition of operating lease liabilities, other than through bank acquisitions, net of terminations	0	2,080
Supplemental disclosure of non-cash investing activities:
Transfers from loans to other real estate owned	953	0
Transfers from bank premises to other real estate owned	$ 883	$ 5,455

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2022		71,618,000
Beginning balance at Dec. 31, 2022	$ 1,607,775	$ 7,162	$ 1,377,802	$ 423,863	$ (13,019)	$ (188,033)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	50,252			74,490		(24,238)
Stock based compensation expense (in shares)		30,000
Stock based compensation expense	10,290		10,290
Common stock transactions related to stock based employee benefit plans (in shares)		713,000
Common stock transactions related to stock based employee benefit plans	4,316	$ 74	5,258		(1,016)
Repurchase of common stock (in shares)		(3,000)
Repurchase of common stock	(45)		(45)
Issuance of common stock, pursuant to acquisition (in shares)		12,792,000
Issuance of common stock, pursuant to acquisition	410,738	$ 1,279	409,459
Conversion of options, pursuant to acquisition	10,304		10,304
Dividends on common stock	(45,236)			(45,236)
Increase (decrease) in shares during period (in shares)		13,532,000
Increase (decrease) in stockholders' equity during period	440,619	$ 1,353	435,266	29,254	(1,016)	(24,238)
Ending balance (in shares) at Sep. 30, 2023		85,150,000
Ending balance at Sep. 30, 2023	2,048,394	$ 8,515	1,813,068	453,117	(14,035)	(212,271)
Beginning balance (in shares) at Jun. 30, 2023		85,086,000
Beginning balance at Jun. 30, 2023	2,054,032	$ 8,509	1,809,431	437,087	(14,171)	(186,824)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	5,967			31,414		(25,447)
Stock based compensation expense (in shares)		30,000
Stock based compensation expense	3,194		3,194
Common stock transactions related to stock based employee benefit plans (in shares)		34,000
Common stock transactions related to stock based employee benefit plans	585	$ 6	443		136
Dividends on common stock	(15,384)			(15,384)
Increase (decrease) in shares during period (in shares)		64,000
Increase (decrease) in stockholders' equity during period	(5,638)	$ 6	3,637	16,030	136	(25,447)
Ending balance (in shares) at Sep. 30, 2023		85,150,000
Ending balance at Sep. 30, 2023	$ 2,048,394	$ 8,515	1,813,068	453,117	(14,035)	(212,271)
Beginning balance (in shares) at Dec. 31, 2023	84,861,498	84,861,000
Beginning balance at Dec. 31, 2023	$ 2,108,086	$ 8,486	1,808,883	467,305	(16,710)	(159,878)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	121,609			86,901		34,708
Stock based compensation expense	10,233		10,233
Common stock transactions related to stock based employee benefit plans (in shares)		620,000
Common stock transactions related to stock based employee benefit plans	972	$ 128	1,934		(1,090)
Repurchase of common stock (in shares)		(40,000)
Repurchase of common stock	(880)				(880)
Dividends on common stock	(46,170)			(46,170)
Increase (decrease) in shares during period (in shares)		580,000
Increase (decrease) in stockholders' equity during period	$ 85,764	$ 128	12,167	40,731	(1,970)	34,708
Ending balance (in shares) at Sep. 30, 2024	85,441,001	85,441,000
Ending balance at Sep. 30, 2024	$ 2,193,850	$ 8,614	1,821,050	508,036	(18,680)	(125,170)
Beginning balance (in shares) at Jun. 30, 2024		85,299,000
Beginning balance at Jun. 30, 2024	2,130,381	$ 8,530	1,815,800	492,805	(18,744)	(168,010)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	73,491			30,651		42,840
Stock based compensation expense	4,128		4,128
Common stock transactions related to stock based employee benefit plans (in shares)		142,000
Common stock transactions related to stock based employee benefit plans	1,270	$ 84	1,122		64
Dividends on common stock	(15,420)			(15,420)
Increase (decrease) in shares during period (in shares)		142,000
Increase (decrease) in stockholders' equity during period	$ 63,469	$ 84	5,250	15,231	64	42,840
Ending balance (in shares) at Sep. 30, 2024	85,441,001	85,441,000
Ending balance at Sep. 30, 2024	$ 2,193,850	$ 8,614	$ 1,821,050	$ 508,036	$ (18,680)	$ (125,170)

CONSOLIDATED STATEMENTS OF SH_2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Stockholders' Equity [Abstract]
Dividends on common stock (in dollars per share)	$ 0.18	$ 0.18	$ 0.54	$ 0.53
Repurchase of common stock			$ (880)	$ (45)

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Basis of Presentation: The accompanying unaudited consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the “Company”) have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP 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 amounts have been reclassified to conform to the current period presentation. Operating results for the three and nine months ended September 30, 2024, are not necessarily indicative of the results that may be expected for the year ending December 31, 2024, or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023. Use of Estimates: The preparation of these consolidated financial statements requires management to make judgments in the application of certain accounting policies that involve significant estimates and assumptions. The Company has established policies and control procedures that are intended to ensure valuation methods are well-controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues, and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include the determination of the allowance for credit losses, acquisition accounting and purchased loans, intangible assets and impairment testing, and other fair value measurements. Issued Accounting Standards In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures.” ASU 2023-07 requires disclosure of significant segment expenses and other segment items on an interim and annual basis. The standard is effective for fiscal years beginning after December 15, 2023 and for interim periods beginning after December 15, 2024. The Company is evaluating the impact of the changes to its existing disclosures. In December 2023, the FASB issued ASU 2023-09, “Improvements to Income Tax Disclosures.” ASU 2023-09 requires disclosure of specific categories in the income tax rate reconciliation and requires additional information for reconciling items that meet a quantitative threshold. The standard requires an annual disclosure of income taxes paid, net of refunds received, disaggregated by federal, state and foreign taxes and to disaggregate the information by jurisdiction based on a quantitative threshold. The standard is effective for fiscal years beginning after December 15, 2024 and early adoption is permitted. The Company does not expect the adoption of the standard to have a material impact on its disclosures. In November 2024, the FASB issued ASU 2024-03, “Expense Disaggregation Disclosures.” ASU 2024-03 requires disclosure to disaggregate prescribed expenses within relevant income statement captions. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its existing disclosures.

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share Basic earnings per common share are computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per share are based on the weighted-average number of common shares outstanding during each period, plus common share equivalents, calculated for share-based awards outstanding using the treasury stock method. For the three and nine months ended September 30, 2024, options to purchase shares of the Company’s common stock totaling 327,006 and 328,045, respectively, were anti-dilutive. For the three and nine months ended September 30, 2023, 368,968 options to purchase shares of the Company’s common stock were anti-dilutive. Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands, except per share data) 2024 2023 2024 2023 Basic earnings per share Net income $ 30,651 $ 31,414 $ 86,901 $ 74,490 Average common shares outstanding 84,434 85,142 84,319 83,457 Net income per share $ 0.36 $ 0.37 $ 1.03 $ 0.89 Diluted earnings per share Net income $ 30,651 $ 31,414 $ 86,901 $ 74,490 Average common shares outstanding 84,434 85,142 84,319 83,457 Add: Dilutive effect of employee restricted stock and stock options 635 524 596 536 Average diluted shares outstanding 85,069 85,666 84,915 83,993 Net income per share $ 0.36 $ 0.37 $ 1.02 $ 0.89

Securities

Securities	9 Months Ended
	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale (“AFS”) and held-to-maturity (“HTM”) at September 30, 2024 and December 31, 2023 are summarized as follows: September 30, 2024 (In thousands) Amortized Gross Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 30,542 $ 375 $ (335) $ 30,582 Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,558,076 8,560 (158,627) 1,408,009 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 299,975 3,860 (11,586) 292,249 Private mortgage-backed securities and collateralized mortgage obligations 136,038 288 (7,028) 129,298 Collateralized loan obligations 286,042 648 (158) 286,532 Obligations of state and political subdivisions 7,137 9 (1,216) 5,930 Other debt securities 7,389 66 — 7,455 Totals $ 2,325,199 $ 13,806 $ (178,950) $ 2,160,055 Held-to-Maturity Debt Securities Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 557,119 $ — $ (99,722) $ 457,397 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 88,931 — (7,843) 81,088 Totals $ 646,050 $ — $ (107,565) $ 538,485 December 31, 2023 (In thousands) Amortized Gross Unrealized Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 37,718 $ 205 $ (478) $ 37,445 Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,152,753 780 (184,152) 969,381 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 385,013 2,824 (19,565) 368,272 Private mortgage-backed securities and collateralized mortgage obligations 135,878 36 (10,911) 125,003 Collateralized loan obligations 300,855 11 (1,411) 299,455 Obligations of state and political subdivisions 10,486 — (1,096) 9,390 Other debt securities 26,599 576 (101) 27,074 Totals $ 2,049,302 $ 4,432 $ (217,714) $ 1,836,020 Held-to-Maturity Debt Securities Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 590,676 $ — $ (111,746) $ 478,930 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 89,637 — (10,208) 79,429 Totals $ 680,313 $ — $ (121,954) $ 558,359 During the three months ended September 30, 2024, debt securities with a fair value of $17.6 million were sold, with gross losses of $0.3 million. There were no sales of debt securities during the three months ended September 30, 2023. During the nine months ended September 30, 2024, debt securities with a fair value of $104.4 million were sold, with gross losses of $4.0 million. During the nine months ended September 30, 2023, debt securities with a fair value of $22.1 million obtained in the acquisition of Professional Holding Corp. (“Professional”) were sold. No gain or loss was recognized on the sale. There were $8.4 million in other sales of securities during the nine months ended September 30, 2023, with gross gains of $24 thousand and gross losses of $19 thousand. Included in “Securities gains (losses), net” are increases of $0.5 million and $0.3 million, respectively, for the three and nine months ended September 30, 2024, and decreases of $0.4 million and $0.5 million, respectively, for the three and nine months ended September 30, 2023 in the value of investments in mutual funds that invest in Community Reinvestment Act (“CRA”)-qualified debt securities. At September 30, 2024, debt securities with a fair value of $1.5 billion were pledged primarily as collateral for public deposits and secured borrowings. The amortized cost and fair value of securities HTM and AFS as of September 30, 2024, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair Due in less than one year $ — $ — $ 999 $ 999 Due after one year through five years — — 6,163 6,187 Due after five years through ten years — — 8,373 8,413 Due after ten years — — 22,144 20,913 — — 37,679 36,512 Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 557,119 457,397 1,558,076 1,408,009 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 88,931 81,088 299,975 292,249 Private mortgage-backed securities and collateralized mortgage obligations — — 136,038 129,298 Collateralized loan obligations — — 286,042 286,532 Other debt securities — — 7,389 7,455 Totals $ 646,050 $ 538,485 $ 2,325,199 $ 2,160,055 The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models, or discounted cash flow analyses, or using observable market data. The tables below indicate the fair value of AFS debt securities with unrealized losses for which no allowance for credit losses has been recorded. September 30, 2024 Less Than 12 Months 12 Months or Longer Total 1 (In thousands) Fair Unrealized Fair Unrealized Fair Unrealized U.S. Treasury securities and obligations of U.S. government agencies $ 372 $ (1) $ 20,513 $ (334) $ 20,885 $ (335) Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 103,020 (449) 828,586 (158,178) 931,606 (158,627) Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities — — 198,386 (11,586) 198,386 (11,586) Private mortgage-backed securities and collateralized mortgage obligations — — 106,748 (7,028) 106,748 (7,028) Collateralized loan obligations 53,893 (139) 7,723 (19) 61,616 (158) Obligations of state and political subdivisions — — 5,588 (1,216) 5,588 (1,216) Totals $ 157,285 $ (589) $ 1,167,544 $ (178,361) $ 1,324,829 $ (178,950) 1 Comprised of 350 individual securities. December 31, 2023 Less Than 12 Months 12 Months or Longer Total 1 (In thousands) Fair Unrealized Fair Unrealized Fair Unrealized U.S. Treasury securities and obligations of U.S. government agencies $ 24,933 $ (143) $ 3,594 $ (335) $ 28,527 $ (478) Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 91,867 (9,320) 826,324 (174,832) 918,191 (184,152) Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 24,251 (1,270) 262,666 (18,295) 286,917 (19,565) Private mortgage-backed securities and collateralized mortgage obligations 3,945 (69) 119,475 (10,842) 123,420 (10,911) Collateralized loan obligations 60,087 (223) 232,545 (1,188) 292,632 (1,411) Obligations of state and political subdivisions 326 (2) 9,064 (1,094) 9,390 (1,096) Other debt securities 10,579 (101) — — 10,579 (101) Totals $ 215,988 $ (11,128) $ 1,453,668 $ (206,586) $ 1,669,656 $ (217,714) 1 Comprised of 504 individual securities. At September 30, 2024, the Company had unrealized losses of $0.3 million on U.S. Treasury securities and obligations of U.S. government agencies having a fair value of $20.9 million. These securities are either explicitly or implicitly guaranteed by the full faith and credit of the U.S. government. The Company does not expect individual securities issued by the U.S. Treasury, a U.S. agency, or a sponsored U.S. agency to incur future losses of principal. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2024, no allowance for credit losses has been recorded. At September 30, 2024, the Company had unrealized losses of $170.2 million on commercial and residential mortgage-backed securities and collateralized mortgage obligations issued by government-sponsored entities having a fair value of $1.1 billion. These securities are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. The implied government guarantee of principal and interest payments and the high credit rating of the portfolio provide a sufficient basis for the current expectation that there is no risk of loss if default were to occur. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2024, no allowance for credit losses has been recorded. At September 30, 2024, the Company had $7.0 million of unrealized losses on private label residential and commercial mortgage-backed securities and collateralized mortgage obligations having a fair value of $106.7 million. The securities have weighted average credit support of 22%. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2024, no allowance for credit losses has been recorded. At September 30, 2024, the Company had $0.2 million of unrealized losses in floating rate collateralized loan obligations (“CLOs”) having a fair value of $61.6 million. CLOs are special purpose vehicles and those in which the Company has invested are nearly all first-lien, broadly syndicated corporate loans across a diversified band of industries while providing support to senior tranche investors. As of September 30, 2024, all positions held by the Company are in AAA and AA tranches, with weighted average credit support of 38% and 30%, respectively. The Company evaluates the securities for potential credit losses by modeling expected loan-level defaults, recoveries, and prepayments for each CLO security. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2024, no allowance for credit losses has been recorded. At September 30, 2024, the Company had $1.2 million of unrealized losses on municipal securities having a fair value of $5.6 million. These securities are highly rated issuances of state or local municipalities, all of which are continuing to make timely contractual payments. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. As a result, as of September 30, 2024, no allowance for credit losses has been recorded. All HTM debt securities are issued by government-sponsored entities, which are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. The implied government guarantee of principal and interest payments, and the high credit rating of the HTM portfolio provide sufficient basis for the current expectation that there is no risk of loss if a default were to occur. As a result, as of September 30, 2024, no allowance for credit losses has been recorded. The Company has the intent and ability to hold these securities until maturity. Included in Other Assets at September 30, 2024 and December 31, 2023 is $77.2 million and $67.7 million, respectively, of FHLB and Federal Reserve Bank (“FRB”) stock stated at par value. The Company has not identified events or changes in circumstances which may have a significant adverse effect on the fair value of these cost method investment securities. Accrued interest receivable on AFS and HTM debt securities of $8.4 million and $1.1 million, respectively, at September 30, 2024, and $7.9 million and $1.1 million, respectively, at December 31, 2023, is included in Other Assets. Also included in Other Assets are investments in CRA-qualified mutual funds carried at fair value of $13.9 million and $13.6 million at September 30, 2024 and December 31, 2023, respectively. At December 31, 2023, the Company held 11,330 shares of Visa Class B stock. During the nine months ended September 30, 2024, the Company sold all of its Visa Class B stock, receiving net proceeds of $4.1 million. The ownership of Visa stock was related to prior ownership in Visa’s network while Visa operated as a cooperative, and was recorded on the Company’s financial records at a zero basis.

Loans

Loans	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Loans	Loans Loans held for investment are categorized into the following segments: • Construction and land development: Loans are extended to both commercial and consumer customers which are collateralized by and for the purpose of funding land development and construction projects, including 1-4 family residential, multi-family, and non-farm residential property where the primary source of repayment is from proceeds of the sale, refinancing or permanent financing of the property. • Commercial real estate - owner occupied: Loans are extended to commercial customers for the purpose of acquiring or refinancing real estate to be occupied by the borrower’s business. These loans are collateralized by the subject property and the repayment of these loans is largely dependent on the performance of the company occupying the property. • Commercial real estate - non-owner occupied: Loans are extended to commercial customers for the purpose of acquiring or refinancing commercial property where occupancy by the borrower is not their primary intent. These loans are viewed primarily as cash flow loans, collateralized by the subject property, and the repayment of these loans is largely dependent on rental income from third parties or from the sale of the property. • Residential real estate: Loans are extended to consumer customers and collateralized primarily by 1-4 family residential properties and include fixed and variable rate mortgages, home equity mortgages, and home equity lines of credit. Loans are primarily written based on conventional loan agency guidelines, including loans that exceed agency value limitations. Sources of repayment are largely dependent on the occupant of the residential property. • Commercial and financial: Loans are extended to commercial customers. The purpose of the loans can be working capital, physical asset expansion, asset acquisition, or other business purposes. Loans may be collateralized by assets owned by the borrower or the borrower’s business. Commercial loans are based primarily on the historical and projected cash flow of the borrower’s business and secondarily on the capacity of credit enhancements, guarantees, and underlying collateral provided by the borrower. • Consumer: Loans are extended to consumer customers. The segment includes both installment loans and lines of credit which may be collateralized or non-collateralized. The following tables present net loan balances by segment for portfolio loans, purchased credit deteriorated loans (“PCD”) and loans purchased which are not considered credit deteriorated (“Non-PCD”) as of: September 30, 2024 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 495,458 $ 99,756 $ 539 $ 595,753 Commercial real estate - owner occupied 1,150,809 493,986 32,019 1,676,814 Commercial real estate - non-owner occupied 2,228,137 1,214,092 130,847 3,573,076 Residential real estate 1,811,941 734,399 18,563 2,564,903 Commercial and financial 1,332,939 213,109 29,180 1,575,228 Consumer 158,902 60,293 312 219,507 Totals $ 7,178,186 $ 2,815,635 $ 211,460 $ 10,205,281 December 31, 2023 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 519,426 $ 247,654 $ 542 $ 767,622 Commercial real estate - owner occupied 1,079,633 552,627 38,021 1,670,281 Commercial real estate - non-owner occupied 1,844,588 1,323,222 152,080 3,319,890 Residential real estate 1,714,748 710,129 20,815 2,445,692 Commercial and financial 1,237,090 318,683 52,115 1,607,888 Consumer 175,969 74,854 744 251,567 Totals $ 6,571,454 $ 3,227,169 $ 264,317 $ 10,062,940 The amortized cost basis of loans included net deferred costs of $44.9 million at September 30, 2024 and $43.1 million at December 31, 2023. At September 30, 2024, the remaining fair value adjustments on acquired loans were $141.8 million, or 4.5% of the outstanding acquired loan balances, compared to $174.0 million, or 4.8% of the acquired loan balances at December 31, 2023. The discount is accreted into interest income over the remaining lives of the related loans on a level yield basis. During the nine months ended September 30, 2024, $9.1 million in loans previously held for investment were sold, resulting in a net gain of $0.9 million. Accrued interest receivable is included within Other Assets and was $38.8 million and $39.4 million at September 30, 2024 and December 31, 2023, respectively. The following tables present the status of net loan balances as of September 30, 2024 and December 31, 2023. September 30, 2024 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 495,240 $ — $ — $ — $ 218 $ 495,458 Commercial real estate - owner occupied 1,147,263 496 835 — 2,215 1,150,809 Commercial real estate - non-owner occupied 2,224,884 — — — 3,253 2,228,137 Residential real estate 1,789,154 11,571 2,175 — 9,041 1,811,941 Commercial and financial 1,317,596 2,844 175 148 12,176 1,332,939 Consumer 157,309 615 470 508 158,902 Total Portfolio Loans $ 7,131,446 $ 15,526 $ 3,655 $ 148 $ 27,411 $ 7,178,186 Acquired Non-PCD Loans Construction and land development $ 97,011 $ 2,219 $ — $ — $ 526 $ 99,756 Commercial real estate - owner occupied 489,257 1,380 613 — 2,736 493,986 Commercial real estate - non-owner occupied 1,203,625 2,059 642 — 7,766 1,214,092 Residential real estate 713,224 9,684 269 646 10,576 734,399 Commercial and financial 208,981 395 749 35 2,949 213,109 Consumer 54,072 2,515 1,706 1,084 916 60,293 Total Acquired Non-PCD Loans $ 2,766,170 $ 18,252 $ 3,979 $ 1,765 $ 25,469 $ 2,815,635 PCD Loans Construction and land development $ 45 $ 400 $ — $ — $ 94 $ 539 Commercial real estate - owner occupied 27,304 — — — 4,715 32,019 Commercial real estate - non-owner occupied 107,265 2,554 — 3,341 17,687 130,847 Residential real estate 16,880 63 168 — 1,452 18,563 Commercial and financial 24,367 803 — 31 3,979 29,180 Consumer 253 9 — — 50 312 Total PCD Loans $ 176,114 $ 3,829 $ 168 $ 3,372 $ 27,977 $ 211,460 Total Loans $ 10,073,730 $ 37,607 $ 7,802 $ 5,285 $ 80,857 $ 10,205,281 December 31, 2023 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 519,383 $ 19 $ — $ — $ 24 $ 519,426 Commercial real estate - owner occupied 1,078,732 — — — 901 1,079,633 Commercial real estate - non-owner occupied 1,840,485 685 — — 3,418 1,844,588 Residential real estate 1,701,862 4,373 1,515 169 6,829 1,714,748 Commercial and financial 1,221,941 1,372 145 50 13,582 1,237,090 Consumer 174,798 763 290 — 118 175,969 Total Portfolio Loans $ 6,537,201 $ 7,212 $ 1,950 $ 219 $ 24,872 $ 6,571,454 Acquired Non-PCD Loans Construction and land development $ 245,674 $ 891 $ 289 $ — $ 800 $ 247,654 Commercial real estate - owner occupied 545,374 1,691 133 — 5,429 552,627 Commercial real estate - non-owner occupied 1,310,100 11,577 — — 1,545 1,323,222 Residential real estate 704,417 2,586 888 153 2,085 710,129 Commercial and financial 315,229 50 36 35 3,333 318,683 Consumer 71,986 568 618 618 1,064 74,854 Total Acquired Non-PCD Loans $ 3,192,780 $ 17,363 $ 1,964 $ 806 $ 14,256 $ 3,227,169 PCD Loans Construction and land development $ 442 $ 100 $ — $ — $ — $ 542 Commercial real estate - owner occupied 34,667 — — — 3,354 38,021 Commercial real estate - non-owner occupied 148,308 — — — 3,772 152,080 Residential real estate 18,923 497 169 154 1,072 20,815 Commercial and financial 34,337 — — — 17,778 52,115 Consumer 651 85 8 — — 744 Total PCD Loans $ 237,328 $ 682 $ 177 $ 154 $ 25,976 $ 264,317 Total Loans $ 9,967,309 $ 25,257 $ 4,091 $ 1,179 $ 65,104 $ 10,062,940 All interest accrued but not received for loans placed on nonaccrual is reversed against interest income. Interest subsequently received on such loans is accounted for under the cost-recovery method, whereby interest income is not recognized until the loan balance is paid down to zero. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current, and future payments are reasonably assured. The Company recognized interest income of $0.2 million and $0.4 million on nonaccrual loans during the three months ended September 30, 2024 and September 30, 2023, respectively. The Company recognized $1.1 million and $0.8 million in interest income on nonaccrual loans during the nine months ended September 30, 2024 and September 30, 2023, respectively. The following tables present net balances of loans on nonaccrual status and the related allowance for credit losses, if any, as of: September 30, 2024 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ 94 $ 744 $ 838 $ 177 Commercial real estate - owner occupied 2,664 7,002 9,666 1,188 Commercial real estate - non-owner occupied 25,452 3,254 28,706 1,715 Residential real estate 6,379 14,690 21,069 562 Commercial and financial 3,571 15,533 19,104 6,676 Consumer — 1,474 1,474 221 Totals $ 38,160 $ 42,697 $ 80,857 $ 10,539 December 31, 2023 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ — $ 824 $ 824 $ — Commercial real estate - owner occupied 4,859 4,825 9,684 41 Commercial real estate - non-owner occupied 3,938 4,797 8,735 230 Residential real estate 1,792 8,194 9,986 58 Commercial and financial 4,868 29,825 34,693 2,319 Consumer — 1,182 1,182 257 Totals $ 15,457 $ 49,647 $ 65,104 $ 2,905 Loans by Risk Rating The Company utilizes an internal asset classification system as a means of identifying problem and potential problem loans. The following classifications are used to categorize loans under the internal classification system: • Pass: Loans that are not problem loans or potential problem loans are considered to be pass-rated. • Special Mention: Loans that do not currently expose the Company to sufficient risk to warrant classification in the Substandard or Doubtful categories, but possess weaknesses that deserve management’s close attention are deemed to be Special Mention. • Substandard: Loans with the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. • Doubtful: Loans that have all the weaknesses inherent in those classified Substandard with the added characteristic that the weakness present makes collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. The following tables present the risk rating of loans and year-to-date 1 gross charge offs by year of origination as of: September 30, 2024 (In thousands) 2024 2023 2022 2021 2020 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 65,374 $ 130,253 $ 191,784 $ 40,202 $ 9,268 $ 41,567 $ 116,021 $ 594,469 Special Mention — — — — — 46 — 46 Substandard — — 188 95 — 955 — 1,238 Doubtful — — — — — — — — Total $ 65,374 $ 130,253 $ 191,972 $ 40,297 $ 9,268 $ 42,568 $ 116,021 $ 595,753 Gross Charge Offs $ — $ — $ — $ — $ — $ 1 $ — $ 1 Commercial real estate - owner occupied Risk Ratings: Pass $ 137,538 $ 142,285 $ 268,777 $ 267,741 $ 160,404 $ 644,931 $ 18,034 $ 1,639,710 Special Mention — — 1,640 700 2,006 6,778 351 11,475 Substandard — 1,068 2,446 1,218 5,916 14,981 — 25,629 Doubtful — — — — — — — — Total $ 137,538 $ 143,353 $ 272,863 $ 269,659 $ 168,326 $ 666,690 $ 18,385 $ 1,676,814 Gross Charge Offs $ — $ — $ 179 $ — $ — $ 125 $ — $ 304 Commercial real estate - non-owner occupied Risk Ratings: Pass $ 335,560 $ 237,198 $ 863,032 $ 655,870 $ 252,978 $ 1,069,483 $ 23,468 $ 3,437,589 Special Mention 29 — 20,248 6,323 16,765 33,324 — 76,689 Substandard — — 10,522 9,685 11,312 25,337 — 56,856 Doubtful — — — — — 1,942 — 1,942 Total $ 335,589 $ 237,198 $ 893,802 $ 671,878 $ 281,055 $ 1,130,086 $ 23,468 $ 3,573,076 Gross Charge Offs $ — $ — $ — $ — $ 89 $ 616 $ — $ 705 Residential real estate Risk Ratings: Pass $ 100,622 $ 174,995 $ 500,327 $ 640,263 $ 156,208 $ 454,794 $ 506,576 $ 2,533,785 Special Mention 176 581 — — 23 436 6,669 7,885 Substandard — 850 4,972 353 115 7,063 9,880 23,233 Doubtful — — — — — — — — Total $ 100,798 $ 176,426 $ 505,299 $ 640,616 $ 156,346 $ 462,293 $ 523,125 $ 2,564,903 Gross Charge Offs $ — $ — $ — $ — $ 40 $ 62 $ 26 $ 128 Commercial and financial Risk Ratings: Pass $ 237,737 $ 212,954 $ 282,492 $ 248,791 $ 93,641 $ 117,672 $ 329,015 $ 1,522,302 Special Mention — 759 2,211 3,023 557 2,154 866 9,570 Substandard — — 9,272 11,279 6,187 10,830 5,788 43,356 Doubtful — — — — — — — — Total $ 237,737 $ 213,713 $ 293,975 $ 263,093 $ 100,385 $ 130,656 $ 335,669 $ 1,575,228 Gross Charge Offs $ — $ — $ 2,747 $ 10,723 $ — $ 2,621 $ 695 $ 16,786 Consumer Risk Ratings: Pass $ 12,300 $ 15,159 $ 39,439 $ 30,070 $ 15,109 $ 37,971 $ 63,234 $ 213,282 Special Mention 52 29 1,067 402 18 312 157 2,037 Substandard 81 63 2,382 1,131 116 340 75 4,188 Doubtful — — — — — — — — Total $ 12,433 $ 15,251 $ 42,888 $ 31,603 $ 15,243 $ 38,623 $ 63,466 $ 219,507 Gross Charge Offs $ 484 $ 394 $ 2,257 $ 3,132 $ 187 $ 100 $ 159 $ 6,713 Consolidated Total $ 889,469 $ 916,194 $ 2,200,799 $ 1,917,146 $ 730,623 $ 2,470,916 $ 1,080,134 $ 10,205,281 Gross Charge Offs $ 484 $ 394 $ 5,183 $ 13,855 $ 316 $ 3,525 $ 880 $ 24,637 1 Represents gross charge-offs for the nine months ended September 30, 2024. December 31, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 80,750 $ 295,043 $ 107,158 $ 20,199 $ 21,942 $ 28,902 $ 210,716 $ 764,710 Special Mention — 1,407 — — — 393 289 2,089 Substandard — — — — — 499 324 823 Doubtful — — — — — — — — Total $ 80,750 $ 296,450 $ 107,158 $ 20,199 $ 21,942 $ 29,794 $ 211,329 $ 767,622 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate - owner occupied Risk Ratings: Pass $ 145,642 $ 272,384 $ 281,870 $ 165,475 $ 171,897 $ 551,177 $ 36,952 $ 1,625,397 Special Mention — 159 1,335 — 524 9,122 1 11,141 Substandard — 6,024 1,057 6,991 7,116 12,491 64 33,743 Doubtful — — — — — — — — Total $ 145,642 $ 278,567 $ 284,262 $ 172,466 $ 179,537 $ 572,790 $ 37,017 $ 1,670,281 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate - non-owner occupied Risk Ratings: Pass $ 234,226 $ 784,525 $ 657,499 $ 288,747 $ 397,031 $ 841,062 $ 25,954 $ 3,229,044 Special Mention — 29,381 2,092 2,964 — 12,120 — 46,557 Substandard — 685 8,723 9,398 10,427 14,806 250 44,289 Doubtful — — — — — — — — Total $ 234,226 $ 814,591 $ 668,314 $ 301,109 $ 407,458 $ 867,988 $ 26,204 $ 3,319,890 Gross Charge Offs $ — $ — $ 11 $ — $ — $ — $ 109 $ 120 Residential real estate Risk Ratings: Pass $ 177,000 $ 450,366 $ 649,086 $ 160,889 $ 95,288 $ 413,719 $ 479,047 $ 2,425,395 Special Mention 208 — — — 58 482 4,004 4,752 Substandard 95 — 919 123 314 8,960 5,134 15,545 Doubtful — — — — — — — — Total $ 177,303 $ 450,366 $ 650,005 $ 161,012 $ 95,660 $ 423,161 $ 488,185 $ 2,445,692 Gross Charge Offs $ — $ — $ — $ 44 $ — $ 159 $ 153 $ 356 Commercial and financial Risk Ratings: Pass $ 315,560 $ 336,071 $ 333,113 $ 127,069 $ 66,165 $ 89,002 $ 269,108 $ 1,536,088 Special Mention 136 2,167 1,064 1,005 503 1,103 2,191 8,169 Substandard — 18,558 21,643 1,380 5,889 11,842 3,961 63,273 Doubtful — — — — — 358 — 358 Total $ 315,696 $ 356,796 $ 355,820 $ 129,454 $ 72,557 $ 102,305 $ 275,260 $ 1,607,888 Gross Charge Offs $ 1,198 $ 117 $ 659 $ 3,007 $ 582 $ 12,584 $ 418 $ 18,565 Consumer Risk Ratings: Pass $ 20,557 $ 66,699 $ 45,534 $ 19,747 $ 20,300 $ 19,080 $ 56,473 $ 248,390 Special Mention 5 334 279 77 5 194 65 959 Substandard 66 930 891 103 51 177 — 2,218 Doubtful — — — — — — — — Total $ 20,628 $ 67,963 $ 46,704 $ 19,927 $ 20,356 $ 19,451 $ 56,538 $ 251,567 Gross Charge Offs $ 74 $ 1,910 $ 2,218 $ 362 $ 263 $ 666 $ 261 $ 5,754 Consolidated Total $ 974,245 $ 2,264,733 $ 2,112,263 $ 804,167 $ 797,510 $ 2,015,489 $ 1,094,533 $ 10,062,940 Gross Charge Offs $ 1,272 $ 2,027 $ 2,888 $ 3,413 $ 845 $ 13,409 $ 941 $ 24,795 1 Represents gross charge-offs for the year ended December 31, 2023. Troubled Borrower Modifications The following table presents the amortized cost of troubled borrower modification (“TBM”) loans that were modified during the nine months ended September 30, 2024. There were five loans with an amortized cost of $0.9 million modified as a TBM during the nine months ended September 30, 2023. September 30, 2024 (In thousands) Rate Reduction or Rate Reduction with Term Extension Term Extension and/or Payment Delay Total 1 % of Total Class of Loans Construction and land development $ — $ 86 $ 86 0.01 % Commercial real estate - owner occupied 514 2,685 3,199 0.19 Commercial real estate - non-owner occupied 3,142 177 3,319 0.09 % Residential real estate — 126 126 0.01 % Commercial and financial 3,524 813 4,337 0.28 % Consumer 84 1,034 1,118 0.51 % Totals $ 7,264 $ 4,921 $ 12,185 0.12 % 1 At September 30, 2024, there were no unfunded lending related commitments associated with TBMs. The following table presents the payment status of TBM loans that were modified in the twelve months prior to September 30, 2024. September 30, 2024 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Construction and Land Development $ — $ — — $ — $ — $ 86 $ 86 Commercial real estate - owner occupied 95 — — — 3,199 3,293 Commercial real estate - non-owner occupied — — — — 3,319 3,319 Residential real estate 123 — — — 96 219 Commercial and financial 3,162 — — — 1,321 4,483 Consumer 341 429 288 191 233 1,483 Totals $ 3,721 $ 429 $ 288 $ 191 $ 8,254 $ 12,883

Allowance for Credit Losses

Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses Activity in the allowance for credit losses is summarized as follows: Three Months Ended September 30, 2024 (In thousands) Beginning Provision Charge- Recoveries Ending Construction and land development $ 5,493 $ 1,562 $ — $ 3 $ 7,058 Commercial real estate - owner occupied 11,582 338 (2) — 11,918 Commercial real estate - non-owner occupied 45,434 826 (602) 18 45,676 Residential real estate 39,209 (159) (6) 104 39,148 Commercial and financial 28,429 3,003 (6,180) 726 25,978 Consumer 11,494 703 (1,794) 288 10,691 Totals $ 141,641 $ 6,273 $ (8,584) $ 1,139 $ 140,469 Three Months Ended September 30, 2023 (In thousands) Beginning Provision Charge- Recoveries Ending Construction and land development $ 6,960 $ 725 $ — $ — $ 7,685 Commercial real estate - owner occupied 6,418 (353) — — 6,065 Commercial real estate - non-owner occupied 54,103 (1,677) — 15 52,441 Residential real estate 36,710 2,009 (44) 60 38,735 Commercial and financial 40,272 2,932 (11,814) 135 31,525 Consumer 15,252 (942) (1,265) 165 13,210 Totals $ 159,715 $ 2,694 $ (13,123) $ 375 $ 149,661 Nine Months Ended September 30, 2024 (In thousands) Beginning Provision Charge- Recoveries Ending Construction and land development $ 8,637 $ (1,593) $ (1) $ 15 $ 7,058 Commercial real estate - owner occupied 5,529 6,688 (304) 5 11,918 Commercial real estate - non-owner occupied 48,288 (2,049) (705) 142 45,676 Residential real estate 39,016 (152) (128) 412 39,148 Commercial and financial 34,343 6,208 (16,786) 2,213 25,978 Consumer 13,118 3,457 (6,713) 829 10,691 Totals $ 148,931 $ 12,559 $ (24,637) $ 3,616 $ 140,469 Nine Months Ended September 30, 2023 (In thousands) Beginning Balance Allowance on PCD Loans Acquired During the Period Provision for Credit Losses Charge- Offs Recoveries Ending Balance Construction and land development $ 6,464 $ 5 $ 1,208 $ — $ 8 $ 7,685 Commercial real estate - owner occupied 6,051 139 (127) — 2 6,065 Commercial real estate - non-owner occupied 43,258 647 8,461 (109) 184 52,441 Residential real estate 29,605 400 8,659 (312) 383 38,735 Commercial and financial 15,648 17,527 11,548 (15,183) 1,985 31,525 Consumer 12,869 161 3,779 (3,864) 265 13,210 Totals $ 113,895 $ 18,879 $ 33,528 $ (19,468) $ 2,827 $ 149,661 Management establishes the allowance using relevant available information from both internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Forecast data is sourced from Moody’s Analytics (“Moody’s”), a firm widely recognized for its research, analysis, and economic forecasts. The forecasts of future economic conditions are over the expected remaining life of the loan using economic forecasts that revert to long-term historical averages over time. As of September 30, 2024 and December 31, 2023, the Company utilized a multiple scenario model comprised of a blend of Moody’s economic scenarios and considered the uncertainty associated with the assumptions in the scenarios, including continued actions taken by the Federal Reserve with regard to monetary policy and interest rates and the potential impact of those actions. Outcomes could differ from the scenarios utilized, and the Company incorporated qualitative considerations reflecting the risk of uncertain economic conditions, and for additional dimensions of risk that may not be captured in the quantitative model. The following section discusses changes in the level of the allowance for credit losses for the three months ended September 30, 2024. The allowance decreased $1.2 million, or 0.8%, during the third quarter of 2024 to $140.5 million, or 1.38% of loans held for investment as of September 30, 2024. In the Construction and Land Development segment, the increase in allowance is due to continued uncertainty in connection with commercial real estate markets. In this segment, the primary source of repayment is typically from proceeds of the sale or permanent financing of the underlying property; therefore, industry and collateral type and estimated collateral values are among the relevant factors in assessing expected losses. In the Commercial Real Estate - Owner-Occupied segment, the allowance increased nominally due to an increase in loan balances and continued uncertainty in connection with commercial real estate valuations broadly and uncertainty associated with the economy. Risk characteristics include, but are not limited to, collateral type, note structure and loan seasoning. In the Commercial Real Estate - Non-Owner-Occupied segment, the allowance increased slightly driven by higher loan balances and was partially offset by the charge-off of one nonaccrual loan. Repayment is often dependent upon rental income from the successful operation of the underlying property or from the sale of the property. Loan performance may be adversely affected by general economic conditions or conditions specific to the real estate market, including property types. Collateral type, note structure, and loan seasoning are among the risk characteristics analyzed for this segment. The Residential Real Estate segment includes first mortgages secured by residential property, and home equity lines of credit. Allowance levels were essentially flat from last quarter. Risk characteristics considered for this segment include, but are not limited to, borrower FICO score, lien position, loan to value ratios, and loan seasoning. In the Commercial and Financial segment, borrowers are primarily small to medium sized professional firms and other businesses, and loans are generally supported by projected cash flows of the business, collateralized by business assets, and/or guaranteed by the business owners. The decrease in the allowance is primarily driven by the charge-off of one nonaccrual relationship that was previously individually reserved. Industry, collateral type, estimated collateral values, and loan seasoning are among the relevant factors in assessing expected losses. Consumer loans include installment and revolving lines, loans for automobiles, boats, and other personal or family purposes. Risk characteristics considered for this segment include, but are not limited to, collateral type, loan to value ratios, loan seasoning and FICO score. The decrease in allowance for consumer loans was driven by lower loan balances and improved economic forecasts.

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Derivatives Interest Rate Contracts The Company offers interest rate swaps when requested by customers to allow them to hedge the risk of rising interest rates on their variable rate loans. Upon entering into these swaps, the Company enters into offsetting positions with counterparties in order to minimize the interest rate risk. These back-to-back swaps are freestanding financial derivatives with the fair values reported in Other Assets and Other Liabilities. The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under the arrangements for financial statement presentation purposes. Gains and losses on these back-to-back swaps, which offset, are recorded through noninterest income. Interest Rate Swaps Designated as Fair Value Hedges The Company has entered into interest rate swap contracts to hedge the risk of changes in fair value of the AFS securities portfolio due to changes in the Secured Overnight Financing Rate (“SOFR”). The Company considers these derivatives to be highly effective at offsetting changes in interest rates and assesses the effectiveness on a quarterly basis. The effect of changes in interest rates on the fair value of these derivative contracts is recognized in other comprehensive income. These derivative instruments are primarily for risk management purposes. For the three and nine months ended September 30, 2024, the Company recognized, through other comprehensive income, net losses of $2.8 million and $2.0 million, respectively, and reclassified net gains of $0.3 million in each period out of accumulated other comprehensive income into interest income. For each of the three and nine months ended September 30, 2023, the Company recognized nominal amounts through other comprehensive income, and reclassified $0.2 million and $0.5 million, respectively, out of accumulated other comprehensive income into interest income. The Company has entered into interest rate swap contracts to hedge the risk of changes in the fair value of a pool of residential mortgages due to changes in SOFR. These fair value hedges utilize the portfolio layer method. The Company considers these derivatives to be highly effective at offsetting changes in interest rates and assesses the effectiveness on a quarterly basis. The effect of changes in interest rates on the fair value of these derivative contracts is recognized in interest income. These derivative instruments are primarily for risk management purposes. For the three and nine months ended September 30, 2024, the Company recognized gains through interest income of $0.9 million and $1.8 million, respectively. (In thousands) Notional Amount Fair Value Balance Sheet Category September 30, 2024 Interest rate contracts 1 $ 817,762 $ 26,259 Other Assets and Other Liabilities Securities fair value hedges 400,000 692 Other Assets Residential mortgage fair value hedges 400,000 794 Other Liabilities December 31, 2023 Interest rate contracts 1 $ 605,735 $ 28,804 Other Assets and Other Liabilities Securities fair value hedges 400,000 2,677 Other Assets Residential mortgage fair value hedges 200,000 75 Other Liabilities 1 Interest rate contracts include risk participation agreements with notional amounts of $18.4 million and $9.4 million at September 30, 2024, and December 31, 2023, respectively with nominal fair value in both periods. The following table presents amounts recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges. Carrying amount of the hedged items Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items (In thousands) September 30, 2024 December 31, 2023 September 30, 2024 December 31, 2023 Securities available-for-sale 1 $ 526,845 $ 584,108 $ 313 $ 2,643 Loans, net 2 599,743 633,693 974 44 1 At September 30, 2024, and December 31, 2023, the amortized cost basis and unallocated basis adjustments used in hedging relationships was $608.4 million and $680.6 million, respectively. Refer to “Note 3 - Securities” for a reconciliation of the amortized cost and fair value of AFS securities. 2 These amounts represent the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At September 30, 2024, the portfolio layer method was $400 million, of which $400 million was designated as hedged. At December 31, 2023, the portfolio layer method was $200 million, of which $200 million was designated as hedged.

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	9 Months Ended
	Sep. 30, 2024
Broker-Dealer [Abstract]
Securities Sold Under Agreements to Repurchase	Securities Sold Under Agreements to Repurchase Securities sold under agreements to repurchase are accounted for as secured borrowings. For securities sold under agreements to repurchase, the Company is required to pledge collateral with value sufficient to fully collateralize borrowings. Company securities pledged were as follows by collateral type and maturity as of: (In thousands) September 30, 2024 December 31, 2023 Fair value of pledged securities - overnight and continuous: Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 253,244 $ 396,378

Regulatory Capital

Regulatory Capital	9 Months Ended
	Sep. 30, 2024
Banking And Thrift Disclosure [Abstract]
Regulatory Capital	Regulatory Capital The Company is well-capitalized and at September 30, 2024, the Company and the Company’s principal banking subsidiary, Seacoast Bank, exceeded the Common Equity Tier 1 “(CET1)” capital ratio regulatory threshold of 6.5% for well-capitalized institutions under the Basel III standardized transition approach, as well as risk-based and leverage ratio requirements for well-capitalized banks under the regulatory framework for prompt corrective action.

Contingent Liabilities

Contingent Liabilities	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities	Contingent Liabilities The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial condition, operating results or cash flows.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at September 30, 2024 and December 31, 2023 included: (In thousands) Fair Value Quoted Prices Significant Significant At September 30, 2024 Financial Assets Debt securities available-for-sale 1 $ 2,160,055 $ 197 $ 2,159,858 $ — Derivative financial instruments 2 26,951 — 26,951 — Loans held for sale 2 11,039 — 11,039 — Loans 3 3,974 — — 3,974 Other real estate owned 3 6,421 — — 6,421 Equity securities 4 13,918 13,918 — — Financial Liabilities Derivative financial instruments 2 $ 27,053 $ — $ 27,053 $ — At December 31, 2023 Financial Assets Debt securities available-for-sale 1 $ 1,836,020 $ 192 $ 1,835,828 $ — Derivative financial instruments 2 31,481 — 31,481 — Loans held for sale 2 4,391 — 4,391 — Loans 3 15,242 — — 15,242 Other real estate owned 3 7,560 — — 7,560 Equity securities 4 13,623 13,623 — — Financial Liabilities Derivative financial instruments 2 $ 28,879 $ — $ 28,879 $ — 1 See “Note 3 – Securities” for further detail of fair value of individual investment categories. 2 Recurring fair value basis determined using observable market data. 3 Fair value is measured on a nonrecurring basis. 4 Investment in shares of mutual funds that invest primarily in CRA-qualified debt securities, reported at fair value in Other Assets. Recurring fair value basis is determined using market quotations. Loans and other real estate owned: Fair values of collateral-dependent real estate loans and other real estate owned are based on recent real estate appraisals less estimated costs of sale. Evaluations may use either a single valuation approach or a combination of approaches, such as comparative sales, cost and/or income approach. Adjustments to comparable sales may be made by an appraiser to reflect local market conditions or other economic factors and may result in changes in the fair value of an asset over time but none were made by management. As such, the fair values of these loans and properties are considered Level 3 in the fair value hierarchy. Collateral-dependent loans measured at fair value totaled $6.1 million with a specific reserve of $2.1 million at September 30, 2024, compared to $17.8 million with a specific reserve of $2.6 million at December 31, 2023. For recurring fair value measurements, transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Company’s monthly and/or quarterly valuation process. During the nine months ended September 30, 2024, there were no such transfers. For additional information on the valuation techniques and significant inputs for Level 2 and Level 3 assets and liabilities that are measured at fair value on a recurring basis, see “Note 16 - Fair Value” of the Annual Report on Form 10-K for the year ended December 31, 2023. The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of September 30, 2024 and December 31, 2023 is as follows: (In thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2024 Financial Assets Held-to-maturity debt securities 1 $ 646,050 $ — $ 538,485 $ — Time deposits with other banks 5,207 — 5,206 — Loans, net 10,060,837 — — 9,933,594 Financial Liabilities Deposits 12,243,585 — — 12,242,892 FHLB borrowings 245,000 — 240,697 — Long-term debt 106,800 — 93,092 — December 31, 2023 Held-to-maturity debt securities 1 $ 680,313 $ — $ 558,359 $ — Time deposits with other banks 5,857 — 5,756 — Loans, net 9,898,767 — — 9,805,693 Financial Liabilities Deposits 11,776,935 — — 11,775,613 FHLB borrowings 50,000 — 49,745 — Long-term debt 109,458 — 100,851 — 1 See “Note 3 – Securities” for further detail of recurring fair value basis of individual investment categories. The short maturity of Seacoast’s assets and liabilities results in a significant number of financial instruments whose fair value equals or closely approximates carrying value. Such financial instruments are reported in the following balance sheet captions: cash and due from banks, interest bearing deposits with other banks, and securities sold under agreements to repurchase. The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it is practicable to estimate that value at September 30, 2024 and December 31, 2023: Held-to-maturity debt securities : These debt securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available. The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models. Loans : Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable-rate interest terms as well as performing and nonperforming categories. The fair value of loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC Topic 820. Deposit liabilities : The fair value of demand deposits, savings accounts and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Business Combinations	Business Combinations Acquisition of Professional Holding Corp. On January 31, 2023, the Company completed its acquisition of Professional Holding Corp. (“Professional”). Simultaneously, upon completion of the merger of Professional and the Company, Professional Bank was merged with and into Seacoast Bank. Prior to the acquisition, Professional Bank operated nine branches across South Florida. The transaction further expanded the Company’s presence in the tri-county South Florida market, which includes Miami-Dade, Broward, and Palm Beach counties, Florida’s largest metropolitan statistical area and the 8th largest in the nation. The Company acquired 100% of the outstanding common stock of Professional. Under the terms of the merger agreement, Professional shareholders received 0.8909 shares of Seacoast common stock for each share of Professional common stock held immediately prior to the merger, and Professional option holders received options to purchase Seacoast common stock, with the number of shares underlying each such option and the applicable exercise price adjusted using the same 0.8909 exchange ratio. (In thousands, except per share data) January 31, 2023 Number of Professional common shares outstanding 14,358 Per share exchange ratio 0.8909 Number of shares of SBCF common stock issued 12,792 Multiplied by common stock price per share at January 31, 2023 $ 32.11 Value of SBCF common stock issued $ 410,738 Cash paid for fractional shares 5 Fair value of Professional options converted 10,304 Total purchase price $ 421,047 The acquisition of Professional was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $251.7 million for this acquisition that is nondeductible for tax purposes. Determining fair values of assets and liabilities, especially the loan portfolio, core deposit intangibles, and deferred taxes, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values. As part of the acquisition of Professional, options to purchase shares of Seacoast common stock were granted to replace outstanding Professional options. These options were fully vested upon acquisition. The full value of the replacement options, $10.3 million, was associated with pre-combination service and was therefore included in the calculation of the total purchase consideration. Initially Measured Measurement As Adjusted (In thousands) January 31, 2023 Period Adjustments January 31, 2023 Assets: Cash and cash equivalents $ 141,680 $ — $ 141,680 Investment securities 167,059 — 167,059 Loans 1,991,713 (5,544) 1,986,169 Bank premises and equipment 2,478 — 2,478 Core deposit intangibles 48,885 — 48,885 Goodwill 248,091 3,583 251,674 BOLI 55,071 — 55,071 Other Assets 74,232 2,561 76,793 Total Assets $ 2,729,209 $ 600 $ 2,729,809 Liabilities: Deposits $ 2,119,341 $ — $ 2,119,341 Subordinated debt 21,141 — 21,141 Other Liabilities 167,680 600 168,280 Total Liabilities $ 2,308,162 $ 600 $ 2,308,762 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. January 31, 2023 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 156,048 $ 151,012 Commercial real estate - owner occupied 293,473 274,068 Commercial real estate - non-owner occupied 752,393 692,746 Residential real estate 509,305 483,611 Commercial and financial 392,396 350,628 Consumer 33,656 32,153 PPP Loans 1,951 1,951 Total acquired loans $ 2,139,222 $ 1,986,169 The table below presents the carrying amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination: (In thousands) January 31, 2023 Book balance of loans at acquisition $ 155,031 Allowance for credit losses at acquisition (18,879) Non-credit related discount (12,361) Total PCD loans acquired $ 123,791 The acquisition of Professional resulted in the addition of $45.5 million in allowance for credit losses, including the $18.9 million identified in the table above for PCD loans, and $26.6 million for non-PCD loans recorded through the provision for credit losses at the date of acquisition. Included within the $18.9 million initial PCD allowance is $5.5 million recorded as a measurement period adjustment during the three months ended September 30, 2023, reflecting information obtained by the Company relating to events or circumstances existing at the acquisition date. The Company believes the deposits assumed in the acquisition have an intangible value. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates and age of deposit relationships. The core deposit intangible asset acquired from Professional is being amortized over eight years using an accelerated method of amortization. Acquisition Costs Acquisition costs were $33.2 million for the nine months ended September 30, 2023.

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2024
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event In October 2024, the Company took advantage of favorable market conditions and repositioned a portion of its AFS securities portfolio. Securities with an average book yield of 2.8% were sold, resulting in a pre-tax loss of approximately $8.0 million impacting fourth quarter 2024 results. The proceeds of approximately $113.0 million were reinvested in agency mortgage-backed securities with an average book yield of 5.4%, for an estimated earnback of less than three years.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income	$ 30,651	$ 31,414	$ 86,901	$ 74,490

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation: The accompanying unaudited consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the “Company”) have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP 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 amounts have been reclassified to conform to the current period presentation.
Use of Estimates	Use of Estimates: The preparation of these consolidated financial statements requires management to make judgments in the application of certain accounting policies that involve significant estimates and assumptions. The Company has established policies and control procedures that are intended to ensure valuation methods are well-controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues, and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include the determination of the allowance for credit losses, acquisition accounting and purchased loans, intangible assets and impairment testing, and other fair value measurements.
Issued Accounting Standards	Issued Accounting Standards In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures.” ASU 2023-07 requires disclosure of significant segment expenses and other segment items on an interim and annual basis. The standard is effective for fiscal years beginning after December 15, 2023 and for interim periods beginning after December 15, 2024. The Company is evaluating the impact of the changes to its existing disclosures. In December 2023, the FASB issued ASU 2023-09, “Improvements to Income Tax Disclosures.” ASU 2023-09 requires disclosure of specific categories in the income tax rate reconciliation and requires additional information for reconciling items that meet a quantitative threshold. The standard requires an annual disclosure of income taxes paid, net of refunds received, disaggregated by federal, state and foreign taxes and to disaggregate the information by jurisdiction based on a quantitative threshold. The standard is effective for fiscal years beginning after December 15, 2024 and early adoption is permitted. The Company does not expect the adoption of the standard to have a material impact on its disclosures. In November 2024, the FASB issued ASU 2024-03, “Expense Disaggregation Disclosures.” ASU 2024-03 requires disclosure to disaggregate prescribed expenses within relevant income statement captions. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its existing disclosures.
Fair Value Measurement	Held-to-maturity debt securities : These debt securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available. The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models. Loans : Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable-rate interest terms as well as performing and nonperforming categories. The fair value of loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC Topic 820. Deposit liabilities : The fair value of demand deposits, savings accounts and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands, except per share data) 2024 2023 2024 2023 Basic earnings per share Net income $ 30,651 $ 31,414 $ 86,901 $ 74,490 Average common shares outstanding 84,434 85,142 84,319 83,457 Net income per share $ 0.36 $ 0.37 $ 1.03 $ 0.89 Diluted earnings per share Net income $ 30,651 $ 31,414 $ 86,901 $ 74,490 Average common shares outstanding 84,434 85,142 84,319 83,457 Add: Dilutive effect of employee restricted stock and stock options 635 524 596 536 Average diluted shares outstanding 85,069 85,666 84,915 83,993 Net income per share $ 0.36 $ 0.37 $ 1.02 $ 0.89

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost and Fair Value of Securities Available for Sale	The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale (“AFS”) and held-to-maturity (“HTM”) at September 30, 2024 and December 31, 2023 are summarized as follows: September 30, 2024 (In thousands) Amortized Gross Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 30,542 $ 375 $ (335) $ 30,582 Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,558,076 8,560 (158,627) 1,408,009 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 299,975 3,860 (11,586) 292,249 Private mortgage-backed securities and collateralized mortgage obligations 136,038 288 (7,028) 129,298 Collateralized loan obligations 286,042 648 (158) 286,532 Obligations of state and political subdivisions 7,137 9 (1,216) 5,930 Other debt securities 7,389 66 — 7,455 Totals $ 2,325,199 $ 13,806 $ (178,950) $ 2,160,055 Held-to-Maturity Debt Securities Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 557,119 $ — $ (99,722) $ 457,397 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 88,931 — (7,843) 81,088 Totals $ 646,050 $ — $ (107,565) $ 538,485 December 31, 2023 (In thousands) Amortized Gross Unrealized Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 37,718 $ 205 $ (478) $ 37,445 Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,152,753 780 (184,152) 969,381 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 385,013 2,824 (19,565) 368,272 Private mortgage-backed securities and collateralized mortgage obligations 135,878 36 (10,911) 125,003 Collateralized loan obligations 300,855 11 (1,411) 299,455 Obligations of state and political subdivisions 10,486 — (1,096) 9,390 Other debt securities 26,599 576 (101) 27,074 Totals $ 2,049,302 $ 4,432 $ (217,714) $ 1,836,020 Held-to-Maturity Debt Securities Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 590,676 $ — $ (111,746) $ 478,930 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 89,637 — (10,208) 79,429 Totals $ 680,313 $ — $ (121,954) $ 558,359
Summary of Amortized Cost and Fair Value of Held-to-Maturity Securities	The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale (“AFS”) and held-to-maturity (“HTM”) at September 30, 2024 and December 31, 2023 are summarized as follows: September 30, 2024 (In thousands) Amortized Gross Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 30,542 $ 375 $ (335) $ 30,582 Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,558,076 8,560 (158,627) 1,408,009 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 299,975 3,860 (11,586) 292,249 Private mortgage-backed securities and collateralized mortgage obligations 136,038 288 (7,028) 129,298 Collateralized loan obligations 286,042 648 (158) 286,532 Obligations of state and political subdivisions 7,137 9 (1,216) 5,930 Other debt securities 7,389 66 — 7,455 Totals $ 2,325,199 $ 13,806 $ (178,950) $ 2,160,055 Held-to-Maturity Debt Securities Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 557,119 $ — $ (99,722) $ 457,397 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 88,931 — (7,843) 81,088 Totals $ 646,050 $ — $ (107,565) $ 538,485 December 31, 2023 (In thousands) Amortized Gross Unrealized Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 37,718 $ 205 $ (478) $ 37,445 Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,152,753 780 (184,152) 969,381 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 385,013 2,824 (19,565) 368,272 Private mortgage-backed securities and collateralized mortgage obligations 135,878 36 (10,911) 125,003 Collateralized loan obligations 300,855 11 (1,411) 299,455 Obligations of state and political subdivisions 10,486 — (1,096) 9,390 Other debt securities 26,599 576 (101) 27,074 Totals $ 2,049,302 $ 4,432 $ (217,714) $ 1,836,020 Held-to-Maturity Debt Securities Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 590,676 $ — $ (111,746) $ 478,930 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 89,637 — (10,208) 79,429 Totals $ 680,313 $ — $ (121,954) $ 558,359
Summary of Investments Classified by Contractual Maturity	The amortized cost and fair value of securities HTM and AFS as of September 30, 2024, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair Due in less than one year $ — $ — $ 999 $ 999 Due after one year through five years — — 6,163 6,187 Due after five years through ten years — — 8,373 8,413 Due after ten years — — 22,144 20,913 — — 37,679 36,512 Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 557,119 457,397 1,558,076 1,408,009 Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 88,931 81,088 299,975 292,249 Private mortgage-backed securities and collateralized mortgage obligations — — 136,038 129,298 Collateralized loan obligations — — 286,042 286,532 Other debt securities — — 7,389 7,455 Totals $ 646,050 $ 538,485 $ 2,325,199 $ 2,160,055
Schedule of Debt Securities in Unrealized Loss Position	The tables below indicate the fair value of AFS debt securities with unrealized losses for which no allowance for credit losses has been recorded. September 30, 2024 Less Than 12 Months 12 Months or Longer Total 1 (In thousands) Fair Unrealized Fair Unrealized Fair Unrealized U.S. Treasury securities and obligations of U.S. government agencies $ 372 $ (1) $ 20,513 $ (334) $ 20,885 $ (335) Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 103,020 (449) 828,586 (158,178) 931,606 (158,627) Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities — — 198,386 (11,586) 198,386 (11,586) Private mortgage-backed securities and collateralized mortgage obligations — — 106,748 (7,028) 106,748 (7,028) Collateralized loan obligations 53,893 (139) 7,723 (19) 61,616 (158) Obligations of state and political subdivisions — — 5,588 (1,216) 5,588 (1,216) Totals $ 157,285 $ (589) $ 1,167,544 $ (178,361) $ 1,324,829 $ (178,950) 1 Comprised of 350 individual securities. December 31, 2023 Less Than 12 Months 12 Months or Longer Total 1 (In thousands) Fair Unrealized Fair Unrealized Fair Unrealized U.S. Treasury securities and obligations of U.S. government agencies $ 24,933 $ (143) $ 3,594 $ (335) $ 28,527 $ (478) Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 91,867 (9,320) 826,324 (174,832) 918,191 (184,152) Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 24,251 (1,270) 262,666 (18,295) 286,917 (19,565) Private mortgage-backed securities and collateralized mortgage obligations 3,945 (69) 119,475 (10,842) 123,420 (10,911) Collateralized loan obligations 60,087 (223) 232,545 (1,188) 292,632 (1,411) Obligations of state and political subdivisions 326 (2) 9,064 (1,094) 9,390 (1,096) Other debt securities 10,579 (101) — — 10,579 (101) Totals $ 215,988 $ (11,128) $ 1,453,668 $ (206,586) $ 1,669,656 $ (217,714) 1 Comprised of 504 individual securities.

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans	The following tables present net loan balances by segment for portfolio loans, purchased credit deteriorated loans (“PCD”) and loans purchased which are not considered credit deteriorated (“Non-PCD”) as of: September 30, 2024 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 495,458 $ 99,756 $ 539 $ 595,753 Commercial real estate - owner occupied 1,150,809 493,986 32,019 1,676,814 Commercial real estate - non-owner occupied 2,228,137 1,214,092 130,847 3,573,076 Residential real estate 1,811,941 734,399 18,563 2,564,903 Commercial and financial 1,332,939 213,109 29,180 1,575,228 Consumer 158,902 60,293 312 219,507 Totals $ 7,178,186 $ 2,815,635 $ 211,460 $ 10,205,281 December 31, 2023 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 519,426 $ 247,654 $ 542 $ 767,622 Commercial real estate - owner occupied 1,079,633 552,627 38,021 1,670,281 Commercial real estate - non-owner occupied 1,844,588 1,323,222 152,080 3,319,890 Residential real estate 1,714,748 710,129 20,815 2,445,692 Commercial and financial 1,237,090 318,683 52,115 1,607,888 Consumer 175,969 74,854 744 251,567 Totals $ 6,571,454 $ 3,227,169 $ 264,317 $ 10,062,940
Schedule of Past Due Financing Receivables	The following tables present the status of net loan balances as of September 30, 2024 and December 31, 2023. September 30, 2024 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 495,240 $ — $ — $ — $ 218 $ 495,458 Commercial real estate - owner occupied 1,147,263 496 835 — 2,215 1,150,809 Commercial real estate - non-owner occupied 2,224,884 — — — 3,253 2,228,137 Residential real estate 1,789,154 11,571 2,175 — 9,041 1,811,941 Commercial and financial 1,317,596 2,844 175 148 12,176 1,332,939 Consumer 157,309 615 470 508 158,902 Total Portfolio Loans $ 7,131,446 $ 15,526 $ 3,655 $ 148 $ 27,411 $ 7,178,186 Acquired Non-PCD Loans Construction and land development $ 97,011 $ 2,219 $ — $ — $ 526 $ 99,756 Commercial real estate - owner occupied 489,257 1,380 613 — 2,736 493,986 Commercial real estate - non-owner occupied 1,203,625 2,059 642 — 7,766 1,214,092 Residential real estate 713,224 9,684 269 646 10,576 734,399 Commercial and financial 208,981 395 749 35 2,949 213,109 Consumer 54,072 2,515 1,706 1,084 916 60,293 Total Acquired Non-PCD Loans $ 2,766,170 $ 18,252 $ 3,979 $ 1,765 $ 25,469 $ 2,815,635 PCD Loans Construction and land development $ 45 $ 400 $ — $ — $ 94 $ 539 Commercial real estate - owner occupied 27,304 — — — 4,715 32,019 Commercial real estate - non-owner occupied 107,265 2,554 — 3,341 17,687 130,847 Residential real estate 16,880 63 168 — 1,452 18,563 Commercial and financial 24,367 803 — 31 3,979 29,180 Consumer 253 9 — — 50 312 Total PCD Loans $ 176,114 $ 3,829 $ 168 $ 3,372 $ 27,977 $ 211,460 Total Loans $ 10,073,730 $ 37,607 $ 7,802 $ 5,285 $ 80,857 $ 10,205,281 December 31, 2023 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 519,383 $ 19 $ — $ — $ 24 $ 519,426 Commercial real estate - owner occupied 1,078,732 — — — 901 1,079,633 Commercial real estate - non-owner occupied 1,840,485 685 — — 3,418 1,844,588 Residential real estate 1,701,862 4,373 1,515 169 6,829 1,714,748 Commercial and financial 1,221,941 1,372 145 50 13,582 1,237,090 Consumer 174,798 763 290 — 118 175,969 Total Portfolio Loans $ 6,537,201 $ 7,212 $ 1,950 $ 219 $ 24,872 $ 6,571,454 Acquired Non-PCD Loans Construction and land development $ 245,674 $ 891 $ 289 $ — $ 800 $ 247,654 Commercial real estate - owner occupied 545,374 1,691 133 — 5,429 552,627 Commercial real estate - non-owner occupied 1,310,100 11,577 — — 1,545 1,323,222 Residential real estate 704,417 2,586 888 153 2,085 710,129 Commercial and financial 315,229 50 36 35 3,333 318,683 Consumer 71,986 568 618 618 1,064 74,854 Total Acquired Non-PCD Loans $ 3,192,780 $ 17,363 $ 1,964 $ 806 $ 14,256 $ 3,227,169 PCD Loans Construction and land development $ 442 $ 100 $ — $ — $ — $ 542 Commercial real estate - owner occupied 34,667 — — — 3,354 38,021 Commercial real estate - non-owner occupied 148,308 — — — 3,772 152,080 Residential real estate 18,923 497 169 154 1,072 20,815 Commercial and financial 34,337 — — — 17,778 52,115 Consumer 651 85 8 — — 744 Total PCD Loans $ 237,328 $ 682 $ 177 $ 154 $ 25,976 $ 264,317 Total Loans $ 9,967,309 $ 25,257 $ 4,091 $ 1,179 $ 65,104 $ 10,062,940
Schedule of Nonaccrual Loans by Loan Category	The following tables present net balances of loans on nonaccrual status and the related allowance for credit losses, if any, as of: September 30, 2024 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ 94 $ 744 $ 838 $ 177 Commercial real estate - owner occupied 2,664 7,002 9,666 1,188 Commercial real estate - non-owner occupied 25,452 3,254 28,706 1,715 Residential real estate 6,379 14,690 21,069 562 Commercial and financial 3,571 15,533 19,104 6,676 Consumer — 1,474 1,474 221 Totals $ 38,160 $ 42,697 $ 80,857 $ 10,539 December 31, 2023 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ — $ 824 $ 824 $ — Commercial real estate - owner occupied 4,859 4,825 9,684 41 Commercial real estate - non-owner occupied 3,938 4,797 8,735 230 Residential real estate 1,792 8,194 9,986 58 Commercial and financial 4,868 29,825 34,693 2,319 Consumer — 1,182 1,182 257 Totals $ 15,457 $ 49,647 $ 65,104 $ 2,905
Schedule of Risk Categories of Loans by Class of Loans	The following tables present the risk rating of loans and year-to-date 1 gross charge offs by year of origination as of: September 30, 2024 (In thousands) 2024 2023 2022 2021 2020 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 65,374 $ 130,253 $ 191,784 $ 40,202 $ 9,268 $ 41,567 $ 116,021 $ 594,469 Special Mention — — — — — 46 — 46 Substandard — — 188 95 — 955 — 1,238 Doubtful — — — — — — — — Total $ 65,374 $ 130,253 $ 191,972 $ 40,297 $ 9,268 $ 42,568 $ 116,021 $ 595,753 Gross Charge Offs $ — $ — $ — $ — $ — $ 1 $ — $ 1 Commercial real estate - owner occupied Risk Ratings: Pass $ 137,538 $ 142,285 $ 268,777 $ 267,741 $ 160,404 $ 644,931 $ 18,034 $ 1,639,710 Special Mention — — 1,640 700 2,006 6,778 351 11,475 Substandard — 1,068 2,446 1,218 5,916 14,981 — 25,629 Doubtful — — — — — — — — Total $ 137,538 $ 143,353 $ 272,863 $ 269,659 $ 168,326 $ 666,690 $ 18,385 $ 1,676,814 Gross Charge Offs $ — $ — $ 179 $ — $ — $ 125 $ — $ 304 Commercial real estate - non-owner occupied Risk Ratings: Pass $ 335,560 $ 237,198 $ 863,032 $ 655,870 $ 252,978 $ 1,069,483 $ 23,468 $ 3,437,589 Special Mention 29 — 20,248 6,323 16,765 33,324 — 76,689 Substandard — — 10,522 9,685 11,312 25,337 — 56,856 Doubtful — — — — — 1,942 — 1,942 Total $ 335,589 $ 237,198 $ 893,802 $ 671,878 $ 281,055 $ 1,130,086 $ 23,468 $ 3,573,076 Gross Charge Offs $ — $ — $ — $ — $ 89 $ 616 $ — $ 705 Residential real estate Risk Ratings: Pass $ 100,622 $ 174,995 $ 500,327 $ 640,263 $ 156,208 $ 454,794 $ 506,576 $ 2,533,785 Special Mention 176 581 — — 23 436 6,669 7,885 Substandard — 850 4,972 353 115 7,063 9,880 23,233 Doubtful — — — — — — — — Total $ 100,798 $ 176,426 $ 505,299 $ 640,616 $ 156,346 $ 462,293 $ 523,125 $ 2,564,903 Gross Charge Offs $ — $ — $ — $ — $ 40 $ 62 $ 26 $ 128 Commercial and financial Risk Ratings: Pass $ 237,737 $ 212,954 $ 282,492 $ 248,791 $ 93,641 $ 117,672 $ 329,015 $ 1,522,302 Special Mention — 759 2,211 3,023 557 2,154 866 9,570 Substandard — — 9,272 11,279 6,187 10,830 5,788 43,356 Doubtful — — — — — — — — Total $ 237,737 $ 213,713 $ 293,975 $ 263,093 $ 100,385 $ 130,656 $ 335,669 $ 1,575,228 Gross Charge Offs $ — $ — $ 2,747 $ 10,723 $ — $ 2,621 $ 695 $ 16,786 Consumer Risk Ratings: Pass $ 12,300 $ 15,159 $ 39,439 $ 30,070 $ 15,109 $ 37,971 $ 63,234 $ 213,282 Special Mention 52 29 1,067 402 18 312 157 2,037 Substandard 81 63 2,382 1,131 116 340 75 4,188 Doubtful — — — — — — — — Total $ 12,433 $ 15,251 $ 42,888 $ 31,603 $ 15,243 $ 38,623 $ 63,466 $ 219,507 Gross Charge Offs $ 484 $ 394 $ 2,257 $ 3,132 $ 187 $ 100 $ 159 $ 6,713 Consolidated Total $ 889,469 $ 916,194 $ 2,200,799 $ 1,917,146 $ 730,623 $ 2,470,916 $ 1,080,134 $ 10,205,281 Gross Charge Offs $ 484 $ 394 $ 5,183 $ 13,855 $ 316 $ 3,525 $ 880 $ 24,637 1 Represents gross charge-offs for the nine months ended September 30, 2024. December 31, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 80,750 $ 295,043 $ 107,158 $ 20,199 $ 21,942 $ 28,902 $ 210,716 $ 764,710 Special Mention — 1,407 — — — 393 289 2,089 Substandard — — — — — 499 324 823 Doubtful — — — — — — — — Total $ 80,750 $ 296,450 $ 107,158 $ 20,199 $ 21,942 $ 29,794 $ 211,329 $ 767,622 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate - owner occupied Risk Ratings: Pass $ 145,642 $ 272,384 $ 281,870 $ 165,475 $ 171,897 $ 551,177 $ 36,952 $ 1,625,397 Special Mention — 159 1,335 — 524 9,122 1 11,141 Substandard — 6,024 1,057 6,991 7,116 12,491 64 33,743 Doubtful — — — — — — — — Total $ 145,642 $ 278,567 $ 284,262 $ 172,466 $ 179,537 $ 572,790 $ 37,017 $ 1,670,281 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate - non-owner occupied Risk Ratings: Pass $ 234,226 $ 784,525 $ 657,499 $ 288,747 $ 397,031 $ 841,062 $ 25,954 $ 3,229,044 Special Mention — 29,381 2,092 2,964 — 12,120 — 46,557 Substandard — 685 8,723 9,398 10,427 14,806 250 44,289 Doubtful — — — — — — — — Total $ 234,226 $ 814,591 $ 668,314 $ 301,109 $ 407,458 $ 867,988 $ 26,204 $ 3,319,890 Gross Charge Offs $ — $ — $ 11 $ — $ — $ — $ 109 $ 120 Residential real estate Risk Ratings: Pass $ 177,000 $ 450,366 $ 649,086 $ 160,889 $ 95,288 $ 413,719 $ 479,047 $ 2,425,395 Special Mention 208 — — — 58 482 4,004 4,752 Substandard 95 — 919 123 314 8,960 5,134 15,545 Doubtful — — — — — — — — Total $ 177,303 $ 450,366 $ 650,005 $ 161,012 $ 95,660 $ 423,161 $ 488,185 $ 2,445,692 Gross Charge Offs $ — $ — $ — $ 44 $ — $ 159 $ 153 $ 356 Commercial and financial Risk Ratings: Pass $ 315,560 $ 336,071 $ 333,113 $ 127,069 $ 66,165 $ 89,002 $ 269,108 $ 1,536,088 Special Mention 136 2,167 1,064 1,005 503 1,103 2,191 8,169 Substandard — 18,558 21,643 1,380 5,889 11,842 3,961 63,273 Doubtful — — — — — 358 — 358 Total $ 315,696 $ 356,796 $ 355,820 $ 129,454 $ 72,557 $ 102,305 $ 275,260 $ 1,607,888 Gross Charge Offs $ 1,198 $ 117 $ 659 $ 3,007 $ 582 $ 12,584 $ 418 $ 18,565 Consumer Risk Ratings: Pass $ 20,557 $ 66,699 $ 45,534 $ 19,747 $ 20,300 $ 19,080 $ 56,473 $ 248,390 Special Mention 5 334 279 77 5 194 65 959 Substandard 66 930 891 103 51 177 — 2,218 Doubtful — — — — — — — — Total $ 20,628 $ 67,963 $ 46,704 $ 19,927 $ 20,356 $ 19,451 $ 56,538 $ 251,567 Gross Charge Offs $ 74 $ 1,910 $ 2,218 $ 362 $ 263 $ 666 $ 261 $ 5,754 Consolidated Total $ 974,245 $ 2,264,733 $ 2,112,263 $ 804,167 $ 797,510 $ 2,015,489 $ 1,094,533 $ 10,062,940 Gross Charge Offs $ 1,272 $ 2,027 $ 2,888 $ 3,413 $ 845 $ 13,409 $ 941 $ 24,795 1 Represents gross charge-offs for the year ended December 31, 2023.
Schedule of Troubled Borrower Modifications	The following table presents the amortized cost of troubled borrower modification (“TBM”) loans that were modified during the nine months ended September 30, 2024. There were five loans with an amortized cost of $0.9 million modified as a TBM during the nine months ended September 30, 2023. September 30, 2024 (In thousands) Rate Reduction or Rate Reduction with Term Extension Term Extension and/or Payment Delay Total 1 % of Total Class of Loans Construction and land development $ — $ 86 $ 86 0.01 % Commercial real estate - owner occupied 514 2,685 3,199 0.19 Commercial real estate - non-owner occupied 3,142 177 3,319 0.09 % Residential real estate — 126 126 0.01 % Commercial and financial 3,524 813 4,337 0.28 % Consumer 84 1,034 1,118 0.51 % Totals $ 7,264 $ 4,921 $ 12,185 0.12 % 1 At September 30, 2024, there were no unfunded lending related commitments associated with TBMs. The following table presents the payment status of TBM loans that were modified in the twelve months prior to September 30, 2024. September 30, 2024 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Construction and Land Development $ — $ — — $ — $ — $ 86 $ 86 Commercial real estate - owner occupied 95 — — — 3,199 3,293 Commercial real estate - non-owner occupied — — — — 3,319 3,319 Residential real estate 123 — — — 96 219 Commercial and financial 3,162 — — — 1,321 4,483 Consumer 341 429 288 191 233 1,483 Totals $ 3,721 $ 429 $ 288 $ 191 $ 8,254 $ 12,883

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Schedule of Allowance for Credit Losses	Activity in the allowance for credit losses is summarized as follows: Three Months Ended September 30, 2024 (In thousands) Beginning Provision Charge- Recoveries Ending Construction and land development $ 5,493 $ 1,562 $ — $ 3 $ 7,058 Commercial real estate - owner occupied 11,582 338 (2) — 11,918 Commercial real estate - non-owner occupied 45,434 826 (602) 18 45,676 Residential real estate 39,209 (159) (6) 104 39,148 Commercial and financial 28,429 3,003 (6,180) 726 25,978 Consumer 11,494 703 (1,794) 288 10,691 Totals $ 141,641 $ 6,273 $ (8,584) $ 1,139 $ 140,469 Three Months Ended September 30, 2023 (In thousands) Beginning Provision Charge- Recoveries Ending Construction and land development $ 6,960 $ 725 $ — $ — $ 7,685 Commercial real estate - owner occupied 6,418 (353) — — 6,065 Commercial real estate - non-owner occupied 54,103 (1,677) — 15 52,441 Residential real estate 36,710 2,009 (44) 60 38,735 Commercial and financial 40,272 2,932 (11,814) 135 31,525 Consumer 15,252 (942) (1,265) 165 13,210 Totals $ 159,715 $ 2,694 $ (13,123) $ 375 $ 149,661 Nine Months Ended September 30, 2024 (In thousands) Beginning Provision Charge- Recoveries Ending Construction and land development $ 8,637 $ (1,593) $ (1) $ 15 $ 7,058 Commercial real estate - owner occupied 5,529 6,688 (304) 5 11,918 Commercial real estate - non-owner occupied 48,288 (2,049) (705) 142 45,676 Residential real estate 39,016 (152) (128) 412 39,148 Commercial and financial 34,343 6,208 (16,786) 2,213 25,978 Consumer 13,118 3,457 (6,713) 829 10,691 Totals $ 148,931 $ 12,559 $ (24,637) $ 3,616 $ 140,469 Nine Months Ended September 30, 2023 (In thousands) Beginning Balance Allowance on PCD Loans Acquired During the Period Provision for Credit Losses Charge- Offs Recoveries Ending Balance Construction and land development $ 6,464 $ 5 $ 1,208 $ — $ 8 $ 7,685 Commercial real estate - owner occupied 6,051 139 (127) — 2 6,065 Commercial real estate - non-owner occupied 43,258 647 8,461 (109) 184 52,441 Residential real estate 29,605 400 8,659 (312) 383 38,735 Commercial and financial 15,648 17,527 11,548 (15,183) 1,985 31,525 Consumer 12,869 161 3,779 (3,864) 265 13,210 Totals $ 113,895 $ 18,879 $ 33,528 $ (19,468) $ 2,827 $ 149,661

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	(In thousands) Notional Amount Fair Value Balance Sheet Category September 30, 2024 Interest rate contracts 1 $ 817,762 $ 26,259 Other Assets and Other Liabilities Securities fair value hedges 400,000 692 Other Assets Residential mortgage fair value hedges 400,000 794 Other Liabilities December 31, 2023 Interest rate contracts 1 $ 605,735 $ 28,804 Other Assets and Other Liabilities Securities fair value hedges 400,000 2,677 Other Assets Residential mortgage fair value hedges 200,000 75 Other Liabilities 1 Interest rate contracts include risk participation agreements with notional amounts of $18.4 million and $9.4 million at September 30, 2024, and December 31, 2023, respectively with nominal fair value in both periods. The following table presents amounts recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges. Carrying amount of the hedged items Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items (In thousands) September 30, 2024 December 31, 2023 September 30, 2024 December 31, 2023 Securities available-for-sale 1 $ 526,845 $ 584,108 $ 313 $ 2,643 Loans, net 2 599,743 633,693 974 44 1 At September 30, 2024, and December 31, 2023, the amortized cost basis and unallocated basis adjustments used in hedging relationships was $608.4 million and $680.6 million, respectively. Refer to “Note 3 - Securities” for a reconciliation of the amortized cost and fair value of AFS securities. 2 These amounts represent the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At September 30, 2024, the portfolio layer method was $400 million, of which $400 million was designated as hedged. At December 31, 2023, the portfolio layer method was $200 million, of which $200 million was designated as hedged.

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	9 Months Ended
	Sep. 30, 2024
Broker-Dealer [Abstract]
Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged	Company securities pledged were as follows by collateral type and maturity as of: (In thousands) September 30, 2024 December 31, 2023 Fair value of pledged securities - overnight and continuous: Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 253,244 $ 396,378

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Assets Measured on Recurring and Nonrecurring Basis	Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at September 30, 2024 and December 31, 2023 included: (In thousands) Fair Value Quoted Prices Significant Significant At September 30, 2024 Financial Assets Debt securities available-for-sale 1 $ 2,160,055 $ 197 $ 2,159,858 $ — Derivative financial instruments 2 26,951 — 26,951 — Loans held for sale 2 11,039 — 11,039 — Loans 3 3,974 — — 3,974 Other real estate owned 3 6,421 — — 6,421 Equity securities 4 13,918 13,918 — — Financial Liabilities Derivative financial instruments 2 $ 27,053 $ — $ 27,053 $ — At December 31, 2023 Financial Assets Debt securities available-for-sale 1 $ 1,836,020 $ 192 $ 1,835,828 $ — Derivative financial instruments 2 31,481 — 31,481 — Loans held for sale 2 4,391 — 4,391 — Loans 3 15,242 — — 15,242 Other real estate owned 3 7,560 — — 7,560 Equity securities 4 13,623 13,623 — — Financial Liabilities Derivative financial instruments 2 $ 28,879 $ — $ 28,879 $ — 1 See “Note 3 – Securities” for further detail of fair value of individual investment categories. 2 Recurring fair value basis determined using observable market data. 3 Fair value is measured on a nonrecurring basis. 4 Investment in shares of mutual funds that invest primarily in CRA-qualified debt securities, reported at fair value in Other Assets. Recurring fair value basis is determined using market quotations.
Schedule of Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis	The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of September 30, 2024 and December 31, 2023 is as follows: (In thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2024 Financial Assets Held-to-maturity debt securities 1 $ 646,050 $ — $ 538,485 $ — Time deposits with other banks 5,207 — 5,206 — Loans, net 10,060,837 — — 9,933,594 Financial Liabilities Deposits 12,243,585 — — 12,242,892 FHLB borrowings 245,000 — 240,697 — Long-term debt 106,800 — 93,092 — December 31, 2023 Held-to-maturity debt securities 1 $ 680,313 $ — $ 558,359 $ — Time deposits with other banks 5,857 — 5,756 — Loans, net 9,898,767 — — 9,805,693 Financial Liabilities Deposits 11,776,935 — — 11,775,613 FHLB borrowings 50,000 — 49,745 — Long-term debt 109,458 — 100,851 — 1 See “Note 3 – Securities” for further detail of recurring fair value basis of individual investment categories.

Business Combinations (Tables)

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Schedule of Purchase Price Calculation	(In thousands, except per share data) January 31, 2023 Number of Professional common shares outstanding 14,358 Per share exchange ratio 0.8909 Number of shares of SBCF common stock issued 12,792 Multiplied by common stock price per share at January 31, 2023 $ 32.11 Value of SBCF common stock issued $ 410,738 Cash paid for fractional shares 5 Fair value of Professional options converted 10,304 Total purchase price $ 421,047
Schedule of Business Acquisitions	Initially Measured Measurement As Adjusted (In thousands) January 31, 2023 Period Adjustments January 31, 2023 Assets: Cash and cash equivalents $ 141,680 $ — $ 141,680 Investment securities 167,059 — 167,059 Loans 1,991,713 (5,544) 1,986,169 Bank premises and equipment 2,478 — 2,478 Core deposit intangibles 48,885 — 48,885 Goodwill 248,091 3,583 251,674 BOLI 55,071 — 55,071 Other Assets 74,232 2,561 76,793 Total Assets $ 2,729,209 $ 600 $ 2,729,809 Liabilities: Deposits $ 2,119,341 $ — $ 2,119,341 Subordinated debt 21,141 — 21,141 Other Liabilities 167,680 600 168,280 Total Liabilities $ 2,308,162 $ 600 $ 2,308,762
Schedule of Fair Value of Acquired Loans, Unpaid Principal Balance, Purchase Price and Allowance for Credit Losses	The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. January 31, 2023 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 156,048 $ 151,012 Commercial real estate - owner occupied 293,473 274,068 Commercial real estate - non-owner occupied 752,393 692,746 Residential real estate 509,305 483,611 Commercial and financial 392,396 350,628 Consumer 33,656 32,153 PPP Loans 1,951 1,951 Total acquired loans $ 2,139,222 $ 1,986,169
Schedule Purchase Credit Deteriorated Loans Acquired	The table below presents the carrying amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination: (In thousands) January 31, 2023 Book balance of loans at acquisition $ 155,031 Allowance for credit losses at acquisition (18,879) Non-credit related discount (12,361) Total PCD loans acquired $ 123,791

Earnings per Share - Narrative

Earnings per Share - Narrative (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Antidilutive securities excluded from diluted earnings per share calculation (in shares)	327,006	368,968	328,045	368,968

Earnings per Share - Schedule o

Earnings per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Basic earnings per share
Net income	$ 30,651	$ 31,414	$ 86,901	$ 74,490
Average common shares outstanding (in shares)	84,434	85,142	84,319	83,457
Net income per share (in dollars per share)	$ 0.36	$ 0.37	$ 1.03	$ 0.89
Diluted earnings per share
Average common shares outstanding (in shares)	84,434	85,142	84,319	83,457
Add: Dilutive effect of employee restricted stock and stock options (in shares)	635	524	596	536
Average diluted shares outstanding (in shares)	85,069	85,666	84,915	83,993
Net income per share (in dollars per share)	$ 0.36	$ 0.37	$ 1.02	$ 0.89

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities Available for Sale and Held for Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	$ 2,325,199	$ 2,049,302
Available for sale, gross unrealized gains	13,806	4,432
Available for sale, gross unrealized losses	(178,950)	(217,714)
Available for sale, fair value	2,160,055	1,836,020
Held-to-Maturity Debt Securities
Held to maturity, amortized cost, total	646,050	680,313
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	(107,565)	(121,954)
Held to maturity, fair value	538,485	558,359
U.S. Treasury securities and obligations of U.S. government agencies
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	30,542	37,718
Available for sale, gross unrealized gains	375	205
Available for sale, gross unrealized losses	(335)	(478)
Available for sale, fair value	30,582	37,445
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	1,558,076	1,152,753
Available for sale, gross unrealized gains	8,560	780
Available for sale, gross unrealized losses	(158,627)	(184,152)
Available for sale, fair value	1,408,009	969,381
Held-to-Maturity Debt Securities
Held to maturity, amortized cost, total	557,119	590,676
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	(99,722)	(111,746)
Held to maturity, fair value	457,397	478,930
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	299,975	385,013
Available for sale, gross unrealized gains	3,860	2,824
Available for sale, gross unrealized losses	(11,586)	(19,565)
Available for sale, fair value	292,249	368,272
Held-to-Maturity Debt Securities
Held to maturity, amortized cost, total	88,931	89,637
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	(7,843)	(10,208)
Held to maturity, fair value	81,088	79,429
Private mortgage-backed securities and collateralized mortgage obligations
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	136,038	135,878
Available for sale, gross unrealized gains	288	36
Available for sale, gross unrealized losses	(7,028)	(10,911)
Available for sale, fair value	129,298	125,003
Collateralized loan obligations
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	286,042	300,855
Available for sale, gross unrealized gains	648	11
Available for sale, gross unrealized losses	(158)	(1,411)
Available for sale, fair value	286,532	299,455
Obligations of state and political subdivisions
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	7,137	10,486
Available for sale, gross unrealized gains	9	0
Available for sale, gross unrealized losses	(1,216)	(1,096)
Available for sale, fair value	5,930	9,390
Other debt securities
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	7,389	26,599
Available for sale, gross unrealized gains	66	576
Available for sale, gross unrealized losses	0	(101)
Available for sale, fair value	$ 7,455	$ 27,074

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale debt securities, including legacy securities	$ 17,600,000	$ 0	$ 104,400,000
Gross losses from sale of securities	300,000		4,000,000
Securities gains (losses), net	187,000	(387,000)	372,000	$ (456,000)
Unrealized losses on mortgage backed securities of government sponsored entities	178,950,000		178,950,000		$ 217,714,000
Fair value of securities in unrealized loss position	1,324,829,000		1,324,829,000		1,669,656,000
Held-to-maturity securities, allowance for credit loss	0		0
Federal Home Loan Bank and Federal Reserve stock recorded in other assets	77,200,000		77,200,000		67,700,000
Accrued interest receivable on AFS debt securities	8,400,000		8,400,000		7,900,000
Accrued interest receivable on HTM debt securities	$ 1,100,000		$ 1,100,000		$ 1,100,000
Common stock, shares outstanding (in shares)	85,441,001		85,441,001		84,861,498
Proceeds from sale of Visa Class B shares			$ 4,104,000	0
Visa | Common Class B
Debt Securities, Available-for-sale [Line Items]
Common stock, shares outstanding (in shares)					11,330
Proceeds from sale of Visa Class B shares			4,100,000
Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Fair value of debt securities pledged as collateral	$ 1,500,000,000		1,500,000,000
Professional Holding Corp.
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale debt securities, including legacy securities				22,100,000
Other debt securities
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale debt securities, including legacy securities				8,400,000
Gross losses from sale of securities				19,000
Gross gains from sale of securities				24,000
Unrealized losses on mortgage backed securities of government sponsored entities					$ 101,000
Fair value of securities in unrealized loss position					10,579,000
CRA - Qualified Mutual Fund
Debt Securities, Available-for-sale [Line Items]
Securities gains (losses), net	500,000	$ (400,000)	300,000	$ (500,000)
Investment in mutual fund carried at fair value	13,900,000		13,900,000		13,600,000
U.S. Treasury securities and obligations of U.S. government agencies
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	335,000		335,000		478,000
Fair value of securities in unrealized loss position	20,885,000		20,885,000		28,527,000
Allowance for credit losses on AFS debt securities	0		0
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	170,200,000		170,200,000
Fair value of securities in unrealized loss position	1,100,000,000		1,100,000,000
Allowance for credit losses on AFS debt securities	0		0
Private mortgage-backed securities and collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	7,028,000		7,028,000		10,911,000
Fair value of securities in unrealized loss position	106,748,000		106,748,000		123,420,000
Allowance for credit losses on AFS debt securities	$ 0		$ 0
Average credit support percentage	22%		22%
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	$ 158,000		$ 158,000		1,411,000
Fair value of securities in unrealized loss position	61,616,000		61,616,000		292,632,000
Allowance for credit losses on AFS debt securities	$ 0		$ 0
Collateralized loan obligations | Standard & Poor's, AAA Rating
Debt Securities, Available-for-sale [Line Items]
Number of positions held, percentage of total	38%		38%
Collateralized loan obligations | Standard & Poor's, AA Rating
Debt Securities, Available-for-sale [Line Items]
Number of positions held, percentage of total	30%		30%
Obligations of state and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	$ 1,216,000		$ 1,216,000		1,096,000
Fair value of securities in unrealized loss position	5,588,000		5,588,000		$ 9,390,000
Allowance for credit losses on AFS debt securities	$ 0		$ 0

Securities - Amortized Cost a_2

Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Amortized Cost
Due in less than one year	$ 0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	0
Held to maturity loans with maturity date, amortized cost, total	0
Held to maturity, amortized cost, total	646,050	$ 680,313
Fair Value
Due in less than one year	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	0
Held to maturity loans with maturity date, fair value, total	0
Held to maturity, fair value, total	538,485	558,359
Amortized Cost
Due in less than one year	999
Due after one year through five years	6,163
Due after five years through ten years	8,373
Due after ten years	22,144
Available for sale loans with maturity date, amortized cost, total	37,679
Available for sale, amortized cost, total	2,325,199	2,049,302
Fair Value
Due in less than one year	999
Due after one year through five years	6,187
Due after five years through ten years	8,413
Due after ten years	20,913
Available for sale loans with maturity date, fair value, total	36,512
Available for sale, fair value, total	2,160,055	1,836,020
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	557,119
Held to maturity, amortized cost, total	557,119	590,676
Fair Value
Loans without single maturity date	457,397
Held to maturity, fair value, total	457,397	478,930
Amortized Cost
Loans without single maturity date	1,558,076
Available for sale, amortized cost, total	1,558,076	1,152,753
Fair Value
Loans without single maturity date	1,408,009
Available for sale, fair value, total	1,408,009	969,381
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	88,931
Held to maturity, amortized cost, total	88,931	89,637
Fair Value
Loans without single maturity date	81,088
Held to maturity, fair value, total	81,088	79,429
Amortized Cost
Loans without single maturity date	299,975
Available for sale, amortized cost, total	299,975	385,013
Fair Value
Loans without single maturity date	292,249
Available for sale, fair value, total	292,249	368,272
Private mortgage-backed securities and collateralized mortgage obligations
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	136,038
Available for sale, amortized cost, total	136,038	135,878
Fair Value
Loans without single maturity date	129,298
Available for sale, fair value, total	129,298	125,003
Collateralized loan obligations
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	286,042
Available for sale, amortized cost, total	286,042	300,855
Fair Value
Loans without single maturity date	286,532
Available for sale, fair value, total	286,532	299,455
Other debt securities
Amortized Cost
Loans without single maturity date	0
Fair Value
Loans without single maturity date	0
Amortized Cost
Loans without single maturity date	7,389
Available for sale, amortized cost, total	7,389	26,599
Fair Value
Loans without single maturity date	7,455
Available for sale, fair value, total	$ 7,455	$ 27,074

Securities - Schedule of Unreal

Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details) $ in Thousands	Sep. 30, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Fair Value
Less Than 12 Months	$ 157,285	$ 215,988
12 Months or Longer	1,167,544	1,453,668
Total	1,324,829	1,669,656
Unrealized Losses
Less Than 12 Months	(589)	(11,128)
12 Months or Longer	(178,361)	(206,586)
Total	$ (178,950)	$ (217,714)
Number of individual securities | security	350	504
U.S. Treasury securities and obligations of U.S. government agencies
Fair Value
Less Than 12 Months	$ 372	$ 24,933
12 Months or Longer	20,513	3,594
Total	20,885	28,527
Unrealized Losses
Less Than 12 Months	(1)	(143)
12 Months or Longer	(334)	(335)
Total	(335)	(478)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	103,020	91,867
12 Months or Longer	828,586	826,324
Total	931,606	918,191
Unrealized Losses
Less Than 12 Months	(449)	(9,320)
12 Months or Longer	(158,178)	(174,832)
Total	(158,627)	(184,152)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	0	24,251
12 Months or Longer	198,386	262,666
Total	198,386	286,917
Unrealized Losses
Less Than 12 Months	0	(1,270)
12 Months or Longer	(11,586)	(18,295)
Total	(11,586)	(19,565)
Private mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	0	3,945
12 Months or Longer	106,748	119,475
Total	106,748	123,420
Unrealized Losses
Less Than 12 Months	0	(69)
12 Months or Longer	(7,028)	(10,842)
Total	(7,028)	(10,911)
Collateralized loan obligations
Fair Value
Less Than 12 Months	53,893	60,087
12 Months or Longer	7,723	232,545
Total	61,616	292,632
Unrealized Losses
Less Than 12 Months	(139)	(223)
12 Months or Longer	(19)	(1,188)
Total	(158)	(1,411)
Obligations of state and political subdivisions
Fair Value
Less Than 12 Months	0	326
12 Months or Longer	5,588	9,064
Total	5,588	9,390
Unrealized Losses
Less Than 12 Months	0	(2)
12 Months or Longer	(1,216)	(1,094)
Total	$ (1,216)	(1,096)
Other debt securities
Fair Value
Less Than 12 Months		10,579
12 Months or Longer		0
Total		10,579
Unrealized Losses
Less Than 12 Months		(101)
12 Months or Longer		0
Total		$ (101)

Loans - Schedule of Portfolio L

Loans - Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 10,205,281	$ 10,062,940
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	595,753	767,622
Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,676,814	1,670,281
Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,573,076	3,319,890
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,564,903	2,445,692
Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,575,228	1,607,888
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	219,507	251,567
Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,815,635	3,227,169
Acquired Non-PCD Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	99,756	247,654
Acquired Non-PCD Loans | Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	493,986	552,627
Acquired Non-PCD Loans | Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,214,092	1,323,222
Acquired Non-PCD Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	734,399	710,129
Acquired Non-PCD Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	213,109	318,683
Acquired Non-PCD Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	60,293	74,854
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	211,460	264,317
PCD Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	539	542
PCD Loans | Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	32,019	38,021
PCD Loans | Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	130,847	152,080
PCD Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	18,563	20,815
PCD Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	29,180	52,115
PCD Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	312	744
Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,178,186	6,571,454
Portfolio Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	495,458	519,426
Portfolio Loans | Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,150,809	1,079,633
Portfolio Loans | Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,228,137	1,844,588
Portfolio Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,811,941	1,714,748
Portfolio Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,332,939	1,237,090
Portfolio Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 158,902	$ 175,969

Loans - Narrative (Details)

Loans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Net deferred costs	$ 44.9		$ 44.9		$ 43.1
Loans sold			9.1
Gain on sale of loans			0.9
Accrued interest receivable	38.8		38.8		39.4
Interest income on nonaccrual loans	$ 0.2	$ 0.4	1.1	$ 0.8
Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Remaining fair value adjustment for loans acquired			$ 141.8		$ 174
Percentage of fair value adjustment for loans acquired	4.50%		4.50%		4.80%

Loans - Past Due Financing Rece

Loans - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Loans	$ 10,205,281	$ 10,062,940
Nonaccrual	80,857	65,104
Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,815,635	3,227,169
Nonaccrual	25,469	14,256
PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	211,460	264,317
Nonaccrual	27,977	25,976
Current
Financing Receivable, Past Due [Line Items]
Loans	10,073,730	9,967,309
Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,766,170	3,192,780
Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	176,114	237,328
Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	37,607	25,257
Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	18,252	17,363
Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,829	682
Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	7,802	4,091
Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,979	1,964
Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	168	177
Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	5,285	1,179
Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,765	806
Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,372	154
Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	595,753	767,622
Nonaccrual	838	824
Construction and land development | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	99,756	247,654
Nonaccrual	526	800
Construction and land development | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	539	542
Nonaccrual	94	0
Construction and land development | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	97,011	245,674
Construction and land development | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	45	442
Construction and land development | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,219	891
Construction and land development | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	400	100
Construction and land development | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	289
Construction and land development | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,676,814	1,670,281
Nonaccrual	9,666	9,684
Commercial real estate - owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	493,986	552,627
Nonaccrual	2,736	5,429
Commercial real estate - owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	32,019	38,021
Nonaccrual	4,715	3,354
Commercial real estate - owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	489,257	545,374
Commercial real estate - owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	27,304	34,667
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,380	1,691
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	613	133
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner occupied | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	3,573,076	3,319,890
Nonaccrual	28,706	8,735
Commercial real estate - non-owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,214,092	1,323,222
Nonaccrual	7,766	1,545
Commercial real estate - non-owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	130,847	152,080
Nonaccrual	17,687	3,772
Commercial real estate - non-owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,203,625	1,310,100
Commercial real estate - non-owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	107,265	148,308
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,059	11,577
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,554	0
Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	642	0
Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,341	0
Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	2,564,903	2,445,692
Nonaccrual	21,069	9,986
Residential real estate | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	734,399	710,129
Nonaccrual	10,576	2,085
Residential real estate | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	18,563	20,815
Nonaccrual	1,452	1,072
Residential real estate | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	713,224	704,417
Residential real estate | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	16,880	18,923
Residential real estate | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	9,684	2,586
Residential real estate | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	63	497
Residential real estate | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	269	888
Residential real estate | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	168	169
Residential real estate | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	646	153
Residential real estate | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	154
Commercial and financial
Financing Receivable, Past Due [Line Items]
Loans	1,575,228	1,607,888
Nonaccrual	19,104	34,693
Commercial and financial | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	213,109	318,683
Nonaccrual	2,949	3,333
Commercial and financial | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	29,180	52,115
Nonaccrual	3,979	17,778
Commercial and financial | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	208,981	315,229
Commercial and financial | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	24,367	34,337
Commercial and financial | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	395	50
Commercial and financial | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	803	0
Commercial and financial | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	749	36
Commercial and financial | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial and financial | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	35	35
Commercial and financial | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	31	0
Consumer
Financing Receivable, Past Due [Line Items]
Loans	219,507	251,567
Nonaccrual	1,474	1,182
Consumer | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	60,293	74,854
Nonaccrual	916	1,064
Consumer | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	312	744
Nonaccrual	50	0
Consumer | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	54,072	71,986
Consumer | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	253	651
Consumer | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,515	568
Consumer | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	9	85
Consumer | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,706	618
Consumer | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	8
Consumer | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,084	618
Consumer | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	7,178,186	6,571,454
Nonaccrual	27,411	24,872
Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	7,131,446	6,537,201
Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	15,526	7,212
Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,655	1,950
Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	148	219
Portfolio Loans | Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	495,458	519,426
Nonaccrual	218	24
Portfolio Loans | Construction and land development | Current
Financing Receivable, Past Due [Line Items]
Loans	495,240	519,383
Portfolio Loans | Construction and land development | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	19
Portfolio Loans | Construction and land development | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Construction and land development | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial real estate - owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,150,809	1,079,633
Nonaccrual	2,215	901
Portfolio Loans | Commercial real estate - owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	1,147,263	1,078,732
Portfolio Loans | Commercial real estate - owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	496	0
Portfolio Loans | Commercial real estate - owner occupied | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	835	0
Portfolio Loans | Commercial real estate - owner occupied | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial real estate - non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	2,228,137	1,844,588
Nonaccrual	3,253	3,418
Portfolio Loans | Commercial real estate - non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	2,224,884	1,840,485
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	685
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	1,811,941	1,714,748
Nonaccrual	9,041	6,829
Portfolio Loans | Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	1,789,154	1,701,862
Portfolio Loans | Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	11,571	4,373
Portfolio Loans | Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,175	1,515
Portfolio Loans | Residential real estate | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	169
Portfolio Loans | Commercial and financial
Financing Receivable, Past Due [Line Items]
Loans	1,332,939	1,237,090
Nonaccrual	12,176	13,582
Portfolio Loans | Commercial and financial | Current
Financing Receivable, Past Due [Line Items]
Loans	1,317,596	1,221,941
Portfolio Loans | Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,844	1,372
Portfolio Loans | Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	175	145
Portfolio Loans | Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	148	50
Portfolio Loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans	158,902	175,969
Nonaccrual	508	118
Portfolio Loans | Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	157,309	174,798
Portfolio Loans | Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	615	763
Portfolio Loans | Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	470	290
Portfolio Loans | Consumer | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans		$ 0

Loans - Schedule of Nonaccrual

Loans - Schedule of Nonaccrual Loans by Loan Category (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	$ 38,160	$ 15,457
Nonaccrual Loans With an Allowance	42,697	49,647
Total Nonaccrual Loans	80,857	65,104
Allowance for Credit Losses	10,539	2,905
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	94	0
Nonaccrual Loans With an Allowance	744	824
Total Nonaccrual Loans	838	824
Allowance for Credit Losses	177	0
Commercial real estate - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	2,664	4,859
Nonaccrual Loans With an Allowance	7,002	4,825
Total Nonaccrual Loans	9,666	9,684
Allowance for Credit Losses	1,188	41
Commercial real estate - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	25,452	3,938
Nonaccrual Loans With an Allowance	3,254	4,797
Total Nonaccrual Loans	28,706	8,735
Allowance for Credit Losses	1,715	230
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	6,379	1,792
Nonaccrual Loans With an Allowance	14,690	8,194
Total Nonaccrual Loans	21,069	9,986
Allowance for Credit Losses	562	58
Commercial and financial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	3,571	4,868
Nonaccrual Loans With an Allowance	15,533	29,825
Total Nonaccrual Loans	19,104	34,693
Allowance for Credit Losses	6,676	2,319
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	0	0
Nonaccrual Loans With an Allowance	1,474	1,182
Total Nonaccrual Loans	1,474	1,182
Allowance for Credit Losses	$ 221	$ 257

Loans - Risk Categories of Loan

Loans - Risk Categories of Loans by Class of Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 889,469		$ 889,469		$ 974,245
One year prior to current fiscal year	916,194		916,194		2,264,733
Two years prior to current fiscal year	2,200,799		2,200,799		2,112,263
Three years prior to current fiscal year	1,917,146		1,917,146		804,167
Four years prior to current fiscal year	730,623		730,623		797,510
Prior	2,470,916		2,470,916		2,015,489
Revolving	1,080,134		1,080,134		1,094,533
Total	10,205,281		10,205,281		10,062,940
Current fiscal year, Charge Offs			484		1,272
One year prior to current fiscal year, Charge Offs			394		2,027
Two years prior to current fiscal year, Charge Offs			5,183		2,888
Three years prior to current fiscal year, Charge Offs			13,855		3,413
Four years prior to current fiscal year, Charge Offs			316		845
Prior, Charge Offs			3,525		13,409
Revolving, Charge Offs			880		941
Total, Charge Offs	8,584	$ 13,123	24,637	$ 19,468	24,795
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	65,374		65,374		80,750
One year prior to current fiscal year	130,253		130,253		296,450
Two years prior to current fiscal year	191,972		191,972		107,158
Three years prior to current fiscal year	40,297		40,297		20,199
Four years prior to current fiscal year	9,268		9,268		21,942
Prior	42,568		42,568		29,794
Revolving	116,021		116,021		211,329
Total	595,753		595,753		767,622
Current fiscal year, Charge Offs			0		0
One year prior to current fiscal year, Charge Offs			0		0
Two years prior to current fiscal year, Charge Offs			0		0
Three years prior to current fiscal year, Charge Offs			0		0
Four years prior to current fiscal year, Charge Offs			0		0
Prior, Charge Offs			1		0
Revolving, Charge Offs			0		0
Total, Charge Offs	0	0	1	0	0
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	65,374		65,374		80,750
One year prior to current fiscal year	130,253		130,253		295,043
Two years prior to current fiscal year	191,784		191,784		107,158
Three years prior to current fiscal year	40,202		40,202		20,199
Four years prior to current fiscal year	9,268		9,268		21,942
Prior	41,567		41,567		28,902
Revolving	116,021		116,021		210,716
Total	594,469		594,469		764,710
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		1,407
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	46		46		393
Revolving	0		0		289
Total	46		46		2,089
Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	188		188		0
Three years prior to current fiscal year	95		95		0
Four years prior to current fiscal year	0		0		0
Prior	955		955		499
Revolving	0		0		324
Total	1,238		1,238		823
Construction and land development | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
Commercial real estate - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	137,538		137,538		145,642
One year prior to current fiscal year	143,353		143,353		278,567
Two years prior to current fiscal year	272,863		272,863		284,262
Three years prior to current fiscal year	269,659		269,659		172,466
Four years prior to current fiscal year	168,326		168,326		179,537
Prior	666,690		666,690		572,790
Revolving	18,385		18,385		37,017
Total	1,676,814		1,676,814		1,670,281
Current fiscal year, Charge Offs			0		0
One year prior to current fiscal year, Charge Offs			0		0
Two years prior to current fiscal year, Charge Offs			179		0
Three years prior to current fiscal year, Charge Offs			0		0
Four years prior to current fiscal year, Charge Offs			0		0
Prior, Charge Offs			125		0
Revolving, Charge Offs			0		0
Total, Charge Offs	2	0	304	0	0
Commercial real estate - owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	137,538		137,538		145,642
One year prior to current fiscal year	142,285		142,285		272,384
Two years prior to current fiscal year	268,777		268,777		281,870
Three years prior to current fiscal year	267,741		267,741		165,475
Four years prior to current fiscal year	160,404		160,404		171,897
Prior	644,931		644,931		551,177
Revolving	18,034		18,034		36,952
Total	1,639,710		1,639,710		1,625,397
Commercial real estate - owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		159
Two years prior to current fiscal year	1,640		1,640		1,335
Three years prior to current fiscal year	700		700		0
Four years prior to current fiscal year	2,006		2,006		524
Prior	6,778		6,778		9,122
Revolving	351		351		1
Total	11,475		11,475		11,141
Commercial real estate - owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	1,068		1,068		6,024
Two years prior to current fiscal year	2,446		2,446		1,057
Three years prior to current fiscal year	1,218		1,218		6,991
Four years prior to current fiscal year	5,916		5,916		7,116
Prior	14,981		14,981		12,491
Revolving	0		0		64
Total	25,629		25,629		33,743
Commercial real estate - owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
Commercial real estate - non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	335,589		335,589		234,226
One year prior to current fiscal year	237,198		237,198		814,591
Two years prior to current fiscal year	893,802		893,802		668,314
Three years prior to current fiscal year	671,878		671,878		301,109
Four years prior to current fiscal year	281,055		281,055		407,458
Prior	1,130,086		1,130,086		867,988
Revolving	23,468		23,468		26,204
Total	3,573,076		3,573,076		3,319,890
Current fiscal year, Charge Offs			0		0
One year prior to current fiscal year, Charge Offs			0		0
Two years prior to current fiscal year, Charge Offs			0		11
Three years prior to current fiscal year, Charge Offs			0		0
Four years prior to current fiscal year, Charge Offs			89		0
Prior, Charge Offs			616		0
Revolving, Charge Offs			0		109
Total, Charge Offs	602	0	705	109	120
Commercial real estate - non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	335,560		335,560		234,226
One year prior to current fiscal year	237,198		237,198		784,525
Two years prior to current fiscal year	863,032		863,032		657,499
Three years prior to current fiscal year	655,870		655,870		288,747
Four years prior to current fiscal year	252,978		252,978		397,031
Prior	1,069,483		1,069,483		841,062
Revolving	23,468		23,468		25,954
Total	3,437,589		3,437,589		3,229,044
Commercial real estate - non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	29		29		0
One year prior to current fiscal year	0		0		29,381
Two years prior to current fiscal year	20,248		20,248		2,092
Three years prior to current fiscal year	6,323		6,323		2,964
Four years prior to current fiscal year	16,765		16,765		0
Prior	33,324		33,324		12,120
Revolving	0		0		0
Total	76,689		76,689		46,557
Commercial real estate - non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		685
Two years prior to current fiscal year	10,522		10,522		8,723
Three years prior to current fiscal year	9,685		9,685		9,398
Four years prior to current fiscal year	11,312		11,312		10,427
Prior	25,337		25,337		14,806
Revolving	0		0		250
Total	56,856		56,856		44,289
Commercial real estate - non-owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	1,942		1,942		0
Revolving	0		0		0
Total	1,942		1,942		0
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	100,798		100,798		177,303
One year prior to current fiscal year	176,426		176,426		450,366
Two years prior to current fiscal year	505,299		505,299		650,005
Three years prior to current fiscal year	640,616		640,616		161,012
Four years prior to current fiscal year	156,346		156,346		95,660
Prior	462,293		462,293		423,161
Revolving	523,125		523,125		488,185
Total	2,564,903		2,564,903		2,445,692
Current fiscal year, Charge Offs			0		0
One year prior to current fiscal year, Charge Offs			0		0
Two years prior to current fiscal year, Charge Offs			0		0
Three years prior to current fiscal year, Charge Offs			0		44
Four years prior to current fiscal year, Charge Offs			40		0
Prior, Charge Offs			62		159
Revolving, Charge Offs			26		153
Total, Charge Offs	6	44	128	312	356
Residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	100,622		100,622		177,000
One year prior to current fiscal year	174,995		174,995		450,366
Two years prior to current fiscal year	500,327		500,327		649,086
Three years prior to current fiscal year	640,263		640,263		160,889
Four years prior to current fiscal year	156,208		156,208		95,288
Prior	454,794		454,794		413,719
Revolving	506,576		506,576		479,047
Total	2,533,785		2,533,785		2,425,395
Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	176		176		208
One year prior to current fiscal year	581		581		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	23		23		58
Prior	436		436		482
Revolving	6,669		6,669		4,004
Total	7,885		7,885		4,752
Residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		95
One year prior to current fiscal year	850		850		0
Two years prior to current fiscal year	4,972		4,972		919
Three years prior to current fiscal year	353		353		123
Four years prior to current fiscal year	115		115		314
Prior	7,063		7,063		8,960
Revolving	9,880		9,880		5,134
Total	23,233		23,233		15,545
Residential real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
Commercial and financial
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	237,737		237,737		315,696
One year prior to current fiscal year	213,713		213,713		356,796
Two years prior to current fiscal year	293,975		293,975		355,820
Three years prior to current fiscal year	263,093		263,093		129,454
Four years prior to current fiscal year	100,385		100,385		72,557
Prior	130,656		130,656		102,305
Revolving	335,669		335,669		275,260
Total	1,575,228		1,575,228		1,607,888
Current fiscal year, Charge Offs			0		1,198
One year prior to current fiscal year, Charge Offs			0		117
Two years prior to current fiscal year, Charge Offs			2,747		659
Three years prior to current fiscal year, Charge Offs			10,723		3,007
Four years prior to current fiscal year, Charge Offs			0		582
Prior, Charge Offs			2,621		12,584
Revolving, Charge Offs			695		418
Total, Charge Offs	6,180	11,814	16,786	15,183	18,565
Commercial and financial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	237,737		237,737		315,560
One year prior to current fiscal year	212,954		212,954		336,071
Two years prior to current fiscal year	282,492		282,492		333,113
Three years prior to current fiscal year	248,791		248,791		127,069
Four years prior to current fiscal year	93,641		93,641		66,165
Prior	117,672		117,672		89,002
Revolving	329,015		329,015		269,108
Total	1,522,302		1,522,302		1,536,088
Commercial and financial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		136
One year prior to current fiscal year	759		759		2,167
Two years prior to current fiscal year	2,211		2,211		1,064
Three years prior to current fiscal year	3,023		3,023		1,005
Four years prior to current fiscal year	557		557		503
Prior	2,154		2,154		1,103
Revolving	866		866		2,191
Total	9,570		9,570		8,169
Commercial and financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		18,558
Two years prior to current fiscal year	9,272		9,272		21,643
Three years prior to current fiscal year	11,279		11,279		1,380
Four years prior to current fiscal year	6,187		6,187		5,889
Prior	10,830		10,830		11,842
Revolving	5,788		5,788		3,961
Total	43,356		43,356		63,273
Commercial and financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		358
Revolving	0		0		0
Total	0		0		358
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	12,433		12,433		20,628
One year prior to current fiscal year	15,251		15,251		67,963
Two years prior to current fiscal year	42,888		42,888		46,704
Three years prior to current fiscal year	31,603		31,603		19,927
Four years prior to current fiscal year	15,243		15,243		20,356
Prior	38,623		38,623		19,451
Revolving	63,466		63,466		56,538
Total	219,507		219,507		251,567
Current fiscal year, Charge Offs			484		74
One year prior to current fiscal year, Charge Offs			394		1,910
Two years prior to current fiscal year, Charge Offs			2,257		2,218
Three years prior to current fiscal year, Charge Offs			3,132		362
Four years prior to current fiscal year, Charge Offs			187		263
Prior, Charge Offs			100		666
Revolving, Charge Offs			159		261
Total, Charge Offs	1,794	$ 1,265	6,713	$ 3,864	5,754
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	12,300		12,300		20,557
One year prior to current fiscal year	15,159		15,159		66,699
Two years prior to current fiscal year	39,439		39,439		45,534
Three years prior to current fiscal year	30,070		30,070		19,747
Four years prior to current fiscal year	15,109		15,109		20,300
Prior	37,971		37,971		19,080
Revolving	63,234		63,234		56,473
Total	213,282		213,282		248,390
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	52		52		5
One year prior to current fiscal year	29		29		334
Two years prior to current fiscal year	1,067		1,067		279
Three years prior to current fiscal year	402		402		77
Four years prior to current fiscal year	18		18		5
Prior	312		312		194
Revolving	157		157		65
Total	2,037		2,037		959
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	81		81		66
One year prior to current fiscal year	63		63		930
Two years prior to current fiscal year	2,382		2,382		891
Three years prior to current fiscal year	1,131		1,131		103
Four years prior to current fiscal year	116		116		51
Prior	340		340		177
Revolving	75		75		0
Total	4,188		4,188		2,218
Consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	$ 0		$ 0		$ 0

Loans - Troubled Borrower Modif

Loans - Troubled Borrower Modifications (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 12,185	$ 900
% of Total Class of Loans	0.12%
Nonaccrual loans modified	$ 8,254
Loans modified	12,883
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	3,721
Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	429
Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	288
Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	191
Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	7,264
Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	4,921
Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 86
% of Total Class of Loans	0.01%
Nonaccrual loans modified	$ 86
Loans modified	86
Construction and land development | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Construction and land development | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Construction and land development | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Construction and land development | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Construction and land development | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Construction and land development | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	86
Commercial real estate - owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 3,199
% of Total Class of Loans	0.19%
Nonaccrual loans modified	$ 3,199
Loans modified	3,293
Commercial real estate - owner occupied | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	95
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial real estate - owner occupied | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial real estate - owner occupied | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	514
Commercial real estate - owner occupied | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	2,685
Commercial real estate - non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 3,319
% of Total Class of Loans	0.09%
Nonaccrual loans modified	$ 3,319
Loans modified	3,319
Commercial real estate - non-owner occupied | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial real estate - non-owner occupied | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	3,142
Commercial real estate - non-owner occupied | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	177
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 126
% of Total Class of Loans	0.01%
Nonaccrual loans modified	$ 96
Loans modified	219
Residential real estate | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	123
Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Residential real estate | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Residential real estate | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Residential real estate | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	126
Commercial and financial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 4,337
% of Total Class of Loans	0.28%
Nonaccrual loans modified	$ 1,321
Loans modified	4,483
Commercial and financial | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	3,162
Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial and financial | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	3,524
Commercial and financial | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	813
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 1,118
% of Total Class of Loans	0.51%
Nonaccrual loans modified	$ 233
Loans modified	1,483
Consumer | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	341
Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	429
Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	288
Consumer | Accruing Greater Than 90 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	191
Consumer | Rate Reduction or Rate Reduction with Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	84
Consumer | Term Extension and/or Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 1,034

Allowance for Credit Losses - A

Allowance for Credit Losses - Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 141,641	$ 159,715	$ 148,931	$ 113,895	$ 113,895
Allowance on PCD Loans Acquired During the Period				18,879
Provision for Credit Losses	6,273	2,694	12,559	33,528
Charge- Offs	(8,584)	(13,123)	(24,637)	(19,468)	(24,795)
Recoveries	1,139	375	3,616	2,827
Ending Balance	140,469	149,661	140,469	149,661	148,931
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5,493	6,960	8,637	6,464	6,464
Allowance on PCD Loans Acquired During the Period				5
Provision for Credit Losses	1,562	725	(1,593)	1,208
Charge- Offs	0	0	(1)	0	0
Recoveries	3	0	15	8
Ending Balance	7,058	7,685	7,058	7,685	8,637
Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	11,582	6,418	5,529	6,051	6,051
Allowance on PCD Loans Acquired During the Period				139
Provision for Credit Losses	338	(353)	6,688	(127)
Charge- Offs	(2)	0	(304)	0	0
Recoveries	0	0	5	2
Ending Balance	11,918	6,065	11,918	6,065	5,529
Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	45,434	54,103	48,288	43,258	43,258
Allowance on PCD Loans Acquired During the Period				647
Provision for Credit Losses	826	(1,677)	(2,049)	8,461
Charge- Offs	(602)	0	(705)	(109)	(120)
Recoveries	18	15	142	184
Ending Balance	45,676	52,441	45,676	52,441	48,288
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	39,209	36,710	39,016	29,605	29,605
Allowance on PCD Loans Acquired During the Period				400
Provision for Credit Losses	(159)	2,009	(152)	8,659
Charge- Offs	(6)	(44)	(128)	(312)	(356)
Recoveries	104	60	412	383
Ending Balance	39,148	38,735	39,148	38,735	39,016
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	28,429	40,272	34,343	15,648	15,648
Allowance on PCD Loans Acquired During the Period				17,527
Provision for Credit Losses	3,003	2,932	6,208	11,548
Charge- Offs	(6,180)	(11,814)	(16,786)	(15,183)	(18,565)
Recoveries	726	135	2,213	1,985
Ending Balance	25,978	31,525	25,978	31,525	34,343
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	11,494	15,252	13,118	12,869	12,869
Allowance on PCD Loans Acquired During the Period				161
Provision for Credit Losses	703	(942)	3,457	3,779
Charge- Offs	(1,794)	(1,265)	(6,713)	(3,864)	(5,754)
Recoveries	288	165	829	265
Ending Balance	$ 10,691	$ 13,210	$ 10,691	$ 13,210	$ 13,118

Allowance for Credit Losses - N

Allowance for Credit Losses - Narrative (Details) $ in Millions	3 Months Ended
	Sep. 30, 2024 USD ($)
Receivables [Abstract]
Decrease of allowance for credit loss	$ (1.2)
% of Total Class of Loans	1.38%
Loan held for investment	$ 140.5
% of load held for investment	(0.80%)

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Securities fair value hedges
Derivative [Line Items]
Reclassification of fair value hedge from AOCI into income	$ (2.8)		$ (2)
Fair value hedge gain (loss) reclassified	0.3	$ 0.2	0.3	$ 0.5
Residential mortgage fair value hedges
Derivative [Line Items]
Gain (loss) on derivative instruments	$ 0.9		$ (1.8)

Derivatives - Schedule of Deriv

Derivatives - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Interest rate contract | Other Assets and Other Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	$ 817,762	$ 605,735
Fair value of derivative assets and liabilities	26,259	28,804
Securities fair value hedges | Other Assets | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	400,000	400,000
Fair value of derivative assets and liabilities	692	2,677
Residential mortgage fair value hedges | Other Liabilities | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	400,000	200,000
Fair value of derivative assets and liabilities	794	75
Interest Rate Contract, Risk Participation Agreements
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	$ 18,400	$ 9,400

Derivatives - Fair Value Hedges

Derivatives - Fair Value Hedges (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Portfolio layer method amount designated as hedged	$ 400,000	$ 200,000
Securities available-for-sale
Derivative [Line Items]
Carrying amount of the hedged items	526,845	584,108
Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items	313	2,643
Amortized cost basis and unallocated basis adjustments used in hedging relationships	608,400	680,600
Loans, net
Derivative [Line Items]
Carrying amount of the hedged items	599,743	633,693
Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items	974	44
Amortized cost basis and unallocated basis adjustments used in hedging relationships	$ 400,000	$ 200,000

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase - Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged (Details) - Asset Pledged as Collateral - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair value of pledged securities - overnight and continuous:
Fair value of debt securities pledged as collateral	$ 1,500,000
Fair Value | Repurchase Agreement | Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair value of pledged securities - overnight and continuous:
Fair value of debt securities pledged as collateral	$ 253,244	$ 396,378

Regulatory Capital (Details)

Regulatory Capital (Details)	Sep. 30, 2024
Banking And Thrift Disclosure [Abstract]
Regulatory threshold percentage for well-capitalized institutions	0.065

Fair Value - Fair Value of Asse

Fair Value - Fair Value of Assets Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financial Assets
Debt securities available-for-sale	$ 2,160,055	$ 1,836,020
Other real estate owned	6,421	7,560
Fair Value, Measurements, Recurring
Financial Assets
Debt securities available-for-sale	2,160,055	1,836,020
Derivative financial instruments	26,951	31,481
Loans held for sale	11,039	4,391
Equity securities	13,918	13,623
Financial Liabilities
Derivative financial instruments	27,053	28,879
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Debt securities available-for-sale	197	192
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	13,918	13,623
Financial Liabilities
Derivative financial instruments	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Debt securities available-for-sale	2,159,858	1,835,828
Derivative financial instruments	26,951	31,481
Loans held for sale	11,039	4,391
Equity securities	0	0
Financial Liabilities
Derivative financial instruments	27,053	28,879
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Debt securities available-for-sale	0	0
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	0	0
Financial Liabilities
Derivative financial instruments	0	0
Fair Value, Measurements, Nonrecurring
Financial Assets
Loans	3,974	15,242
Other real estate owned	6,421	7,560
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Loans	0	0
Other real estate owned	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Loans	0	0
Other real estate owned	0	0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Loans	3,974	15,242
Other real estate owned	$ 6,421	$ 7,560

Fair Value - Narrative (Details

Fair Value - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Allowance for credit losses	$ 140,469	$ 141,641	$ 148,931	$ 149,661	$ 159,715	$ 113,895
Collateral-Dependent Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	6,100		17,800
Allowance for credit losses	$ 2,100		$ 2,600

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financial Assets
Held-to-maturity debt securities	$ 646,050	$ 680,313
Time deposits with other banks	5,207	5,857
Loans, net	10,064,812	9,914,009
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Time deposits with other banks	0	0
Loans, net	0	0
Financial Liabilities
Deposits	0	0
FHLB borrowings	0	0
Long-term debt	0	0
Significant Other Observable Inputs (Level 2)
Financial Assets
Time deposits with other banks	5,206	5,756
Loans, net	0	0
Financial Liabilities
Deposits	0	0
FHLB borrowings	240,697	49,745
Long-term debt	93,092	100,851
Significant Unobservable Inputs (Level 3)
Financial Assets
Time deposits with other banks	0	0
Loans, net	9,933,594	9,805,693
Financial Liabilities
Deposits	12,242,892	11,775,613
FHLB borrowings	0	0
Long-term debt	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Held-to-maturity debt securities	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Held-to-maturity debt securities	538,485	558,359
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Held-to-maturity debt securities	0	0
Carrying Value
Financial Assets
Time deposits with other banks	5,207	5,857
Loans, net	10,060,837	9,898,767
Financial Liabilities
Deposits	12,243,585	11,776,935
FHLB borrowings	245,000	50,000
Long-term debt	106,800	109,458
Carrying Value | Fair Value, Measurements, Recurring
Financial Assets
Held-to-maturity debt securities	$ 646,050	$ 680,313

Business Combinations - Narrati

Business Combinations - Narrative (Details) $ in Thousands		9 Months Ended
	Jan. 31, 2023 USD ($) branch	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Business Acquisition [Line Items]
Goodwill			$ 732,417		$ 732,417
Allowance for credit losses		$ 149,661	$ 140,469	$ 141,641	$ 148,931	$ 159,715	$ 113,895
Acquisition costs		$ 33,200
Professional Holding Corp.
Business Acquisition [Line Items]
Number of branches operated | branch	9
Percentage of common stock acquired	100%
Per share exchange ratio (in shares)	0.8909
Goodwill	$ 251,674
Fair value of options and warrants converted	10,304
Allowance for credit losses	45,500
Measurement period adjustment	$ (5,544)
Intangible assets weighted average useful life	8 years
Professional Holding Corp. | PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses at acquisition	$ 18,879
Professional Holding Corp. | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses	$ 26,600

Business Combinations - Purchas

Business Combinations - Purchase Price (Details) - Professional Holding Corp. $ / shares in Units, shares in Thousands, $ in Thousands	Jan. 31, 2023 USD ($) $ / shares shares
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares	14,358
Per share exchange ratio (in shares)	0.8909
Number of shares of SBCF common stock issues (in shares) | shares	12,792
Multiplied by common stock price per share (in dollars per share) | $ / shares	$ 32.11
Value of common stock issued	$ 410,738
Payments To Acquire Fractional Shares	5
Fair value of options and warrants converted	10,304
Total purchase price	$ 421,047

Business Combinations - Fair Va

Business Combinations - Fair Value of the Assets Purchased, Including Goodwill and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Sep. 30, 2024	Dec. 31, 2023
Assets:
Goodwill		$ 732,417	$ 732,417
Professional Holding Corp.
Assets:
Cash and cash equivalents	$ 141,680
Measurement Period Adjustments, Cash and cash equivalents	0
Investment securities	167,059
Measurement Period Adjustments, Investment Securities	0
Loans	1,986,169
Measurement Period Adjustments, Loans	(5,544)
Bank premises and equipment	2,478
Measurement Period Adjustments, Bank premises and equipment	0
Core deposit intangibles	48,885
Measurement Period Adjustments, Core deposit intangibles	0
Goodwill	251,674
Measurement Period Adjustments, Goodwill	3,583
BOLI	55,071
Measurement Period Adjustments, BOLI	0
Other Assets	76,793
Measurement Period Adjustments, Other Assets	2,561
Total Assets	2,729,809
Measurement Period Adjustments, Total Assets	600
Liabilities:
Deposits	2,119,341
Measurement Period Adjustments, Deposits	0
Subordinated debt	21,141
Measurement Period Adjustments, Subordinated debt	0
Other Liabilities	168,280
Measurement Period Adjustments, Other Liabilities	600
Total Liabilities	2,308,762
Measurement Period Adjustments, Total Liabilities	600
Professional Holding Corp. | Initially Measured
Assets:
Cash and cash equivalents	141,680
Investment securities	167,059
Loans	1,991,713
Bank premises and equipment	2,478
Core deposit intangibles	48,885
Goodwill	248,091
BOLI	55,071
Other Assets	74,232
Total Assets	2,729,209
Liabilities:
Deposits	2,119,341
Subordinated debt	21,141
Other Liabilities	167,680
Total Liabilities	$ 2,308,162

Business Combinations - Fair _2

Business Combinations - Fair Value of Acquired Loans (Details) - Professional Holding Corp. $ in Thousands	Jan. 31, 2023 USD ($)
Business Acquisition [Line Items]
Book Balance	$ 2,139,222
Fair Value	1,986,169
Construction and land development
Business Acquisition [Line Items]
Book Balance	156,048
Fair Value	151,012
Commercial real estate - owner occupied
Business Acquisition [Line Items]
Book Balance	293,473
Fair Value	274,068
Commercial real estate - non-owner occupied
Business Acquisition [Line Items]
Book Balance	752,393
Fair Value	692,746
Residential real estate
Business Acquisition [Line Items]
Book Balance	509,305
Fair Value	483,611
Commercial and financial
Business Acquisition [Line Items]
Book Balance	392,396
Fair Value	350,628
Consumer
Business Acquisition [Line Items]
Book Balance	33,656
Fair Value	32,153
PPP Loans
Business Acquisition [Line Items]
Book Balance	1,951
Fair Value	$ 1,951

Business Combinations - Purch_2

Business Combinations - Purchased Credit Impaired Loans (Details) - PCD Loans - Professional Holding Corp. $ in Thousands	Jan. 31, 2023 USD ($)
Business Acquisition [Line Items]
Book balance of loans at acquisition	$ 155,031
Allowance for credit losses at acquisition	(18,879)
Non-credit related discount	(12,361)
Total PCD loans acquired	$ 123,791

Subsequent Event (Details)

Subsequent Event (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
	Oct. 31, 2024	Sep. 30, 2024	Sep. 30, 2024	Sep. 30, 2023
Subsequent Event [Line Items]
Gross losses from sale of securities		$ 300	$ 4,000
Proceeds from sale of debt securities available-for-sale			$ 104,425	$ 30,490
Subsequent Event
Subsequent Event [Line Items]
Securities weighted average yield	2.80%
Gross losses from sale of securities	$ 8,000
Proceeds from sale of debt securities available-for-sale	$ 113,000
Subsequent Event | Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Subsequent Event [Line Items]
Securities weighted average yield	5.40%
Subsequent Event | Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities | Maximum
Subsequent Event [Line Items]
Debt securities term	3 years