Seacoast Banking Corporation of Florida (SBCF) 10-Q 8 Nov 23 2023 Q3 Quarterly report Financial data

Cover Page

Cover Page	9 Months Ended
	Sep. 30, 2023 shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
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	85,149,880
Amendment Flag	false
Document Fiscal Year Focus	2023
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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Interest and fees on loans	$ 149,871	$ 73,970	$ 433,304	$ 210,395
Interest and dividends on securities	21,498	15,791	61,842	38,497
Interest on interest bearing deposits and other investments	8,477	1,643	16,974	4,493
Total Interest Income	179,846	91,404	512,120	253,385
Interest on deposits	38,396	1,623	81,612	3,384
Interest on time certificates	16,461	380	36,490	1,284
Interest on borrowed money	5,683	1,117	16,597	2,264
Total Interest Expense	60,540	3,120	134,699	6,932
Net Interest Income	119,306	88,284	377,421	246,453
Provision for credit losses	2,694	4,676	33,528	12,054
Net Interest Income after Provision for Credit Losses	116,612	83,608	343,893	234,399
Noninterest income:
Service charges on deposit accounts	4,648	3,504	13,450	9,713
Interchange income	1,684	4,138	11,444	12,521
Wealth management income	3,138	2,732	9,519	8,165
Mortgage banking fees	410	434	1,412	3,052
Insurance agency income	1,183	0	3,444	0
SBA gains	613	108	1,184	737
BOLI income	2,197	1,363	6,181	4,046
Other	4,307	4,186	15,636	11,320
Noninterest income, excluding securities gains (losses)	18,180	16,465	62,270	49,554
Securities losses, net	(387)	(362)	(456)	(1,114)
Total Noninterest Income	17,793	16,103	61,814	48,440
Noninterest Expense:
Salaries and wages	46,431	28,420	139,202	84,695
Employee benefits	7,206	4,074	23,240	13,726
Outsourced data processing costs	8,714	5,393	43,489	17,592
Telephone / data lines	1,409	973	4,008	2,614
Occupancy	6,349	5,046	20,352	13,082
Furniture and equipment	2,052	1,462	6,664	4,476
Marketing	1,876	1,461	6,161	4,514
Legal and professional fees	2,679	3,794	14,220	11,529
FDIC assessments	2,258	760	5,817	2,248
Amortization of intangibles	7,457	1,446	21,838	4,338
Foreclosed property expense and net loss (gain) on sale	274	9	412	(1,123)
Provision for credit losses on unfunded commitments	0	1,015	1,239	1,157
Other	7,210	7,506	22,613	17,576
Total Noninterest Expense	93,915	61,359	309,255	176,424
Income Before Income Taxes	40,490	38,352	96,452	106,415
Provision for income taxes	9,076	9,115	21,962	23,835
Net Income	$ 31,414	$ 29,237	$ 74,490	$ 82,580
Net income per share of common stock
Diluted (in dollars per share)	$ 0.37	$ 0.47	$ 0.89	$ 1.33
Basic (in dollars per share)	$ 0.37	$ 0.48	$ 0.89	$ 1.35
Average common shares outstanding
Diluted (in shares)	85,666	61,961	83,993	61,867
Basic (in shares)	85,142	61,442	83,457	61,327

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Income	$ 31,414	$ 29,237	$ 74,490	$ 82,580
Other comprehensive income (loss):
Unrealized losses on available-for-sale securities, net of tax benefit of $8.1 million and $9.3 million for the three and nine months ended September 30, 2023, respectively, and net of tax benefit of $20.3 million and $56.8 million for the three and nine months ended September 30, 2022, respectively	(26,065)	(63,736)	(29,764)	(180,221)
Amortization of unrealized (gains) losses on securities transferred to held-to-maturity, net of tax benefit of $3 thousand and $10 thousand for the three and nine months ended September 30, 2023, respectively, and net of tax benefit of $3 thousand and $4 thousand for the three and nine months ended September 30, 2022, respectively	(11)	(11)	(32)	(9)
Reclassification adjustment for gains included in net income, net of tax expense of $1 thousand for the nine months ended September 30, 2023	0	0	(4)	0
Unrealized gains on derivatives designated as fair value hedges, net of reclassifications to income, net of tax expense of $0.2 million and $1.8 million for the three and nine months ended September 30, 2023, respectively	504	0	5,236	0
Unrealized gains (losses) 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, and net of tax expense of $22 thousand and $3 thousand for the three and nine months ended September 30, 2022, respectively	125	65	326	10
Total other comprehensive income (loss)	(25,447)	(63,682)	(24,238)	(180,220)
Comprehensive Income (Loss)	$ 5,967	$ (34,445)	$ 50,252	$ (97,640)

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Unrealized losses on available-for-sale securities, tax (benefit) expense	$ (8,100)	$ (20,300)	$ (9,300)	$ (56,800)
Amortization of unrealized gains and losses on securities transferred to held-to-maturity, tax expense (benefit)	(3)	(3)	(10)	(4)
Reclassification adjustment for (gains) included in net income, tax expense (benefit)			1
Unrealized gains (losses) on fair value hedging derivatives, net of reclassifications, tax expense (benefit)	200		1,800
Unrealized gains (losses) on cash flow hedging derivatives, net of reclassifications, tax expense (benefit)	$ 43	$ 22	$ 114	$ 3

CONSOLIDATED BALANCE SHEETS (Un

CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 182,036	$ 120,748
Interest bearing deposits with other banks	513,946	81,192
Total cash and cash equivalents	695,982	201,940
Time deposits with other banks	4,357	3,236
Debt securities:
Securities available-for-sale (at fair value)	1,841,845	1,871,742
Securities held-to-maturity (fair value $537.2 million at September 30, 2023 and $617.7 million at December 31, 2022)	691,404	747,408
Total debt securities	2,533,249	2,619,150
Loans held for sale (at fair value)	2,979	3,151
Loans	10,011,186	8,144,724
Less: Allowance for credit losses	(149,661)	(113,895)
Loans, net of allowance for credit losses	9,861,525	8,030,829
Bank premises and equipment, net	115,749	116,892
Other real estate owned	7,216	2,301
Goodwill	731,970	480,319
Other intangible assets, net	102,397	75,451
Bank owned life insurance	296,763	237,824
Net deferred tax assets	131,602	94,457
Other assets	339,218	280,212
Total Assets	14,823,007	12,145,762
Liabilities
Deposits	12,107,834	9,981,595
Securities sold under agreements to repurchase, maturing within 30 days	276,450	172,029
Federal Home Loan Bank ("FHLB") borrowings	110,000	150,000
Subordinated debt	106,136	84,533
Other liabilities	174,193	149,830
Total Liabilities	12,774,613	10,537,987
Shareholders' Equity
Common stock, par value $0.10 per share, authorized 120,000,000 shares, issued 85,672,995 and outstanding 85,149,880 at September 30, 2023, and authorized 120,000,000, issued 72,099,136 and outstanding 71,617,852 shares at December 31, 2022	8,515	7,162
Additional paid-in-capital	1,813,068	1,377,802
Retained earnings	453,117	423,863
Less: Treasury stock	(14,035)	(13,019)
Total shareholders' equity, before accumulated other comprehensive (loss) income, net	2,260,665	1,795,808
Accumulated other comprehensive loss, net	(212,271)	(188,033)
Total Shareholders' Equity	2,048,394	1,607,775
Total Liabilities and Shareholders' Equity	$ 14,823,007	$ 12,145,762

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Held to maturity, fair value	$ 537,218	$ 617,741
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)	85,672,995	72,099,136
Common stock, shares outstanding (in shares)	85,149,880	71,617,852

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022
Cash Flows from Operating Activities
Net income		$ 74,490	$ 82,580
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		6,090	4,267
(Accretion of discounts) and amortization of premiums on securities, net		(798)	630
Amortization of operating lease right-of-use assets		5,993	4,434
Other amortization and accretion, net		(14,952)	557
Stock based compensation		10,290	6,620
Origination of loans designated for sale		(82,695)	(148,444)
Sale of loans designated for sale		86,221	184,045
Provision for credit losses		33,528	12,054
Deferred income taxes		(3,348)	1,309
Gains on sale of securities		(5)	0
Gains on sale of loans		(2,993)	(5,082)
Gains on sale and write-downs of other real estate owned		(37)	(1,302)
Losses on disposition of fixed assets and write-downs upon transfer of bank premises to other real estate owned		1,755	1,127
Changes in operating assets and liabilities, net of effects from acquired companies:
Net decrease (increase) in other assets		5,507	(6,273)
Net increase in other liabilities		1,684	10,841
Net cash provided by operating activities		120,730	147,363
Cash Flows from Investing Activities
Maturities and repayments of debt securities available-for-sale		153,866	219,868
Maturities and repayments of debt securities held-to-maturity		58,357	69,665
Proceeds from sale of debt securities available-for-sale		30,490	26,011
Purchases of debt securities available-for-sale		(28,095)	(673,656)
Purchases of debt securities held-to-maturity		0	(206,065)
Maturities of time deposits with other banks		1,492	1,992
Purchases of time deposits with other banks		(2,613)	0
Net new loans and principal repayments		159,298	(282,514)
Purchases of loans held for investment		0	(111,292)
Proceeds from sale of other real estate owned		577	14,208
Additions to other real estate owned		0	(590)
Proceeds from sale of FHLB and Federal Reserve Bank Stock		73,473	0
Purchase of FHLB and Federal Reserve Bank Stock		(90,896)	(3,428)
Net cash from bank acquisitions		141,674	208,933
Additions to bank premises and equipment		(9,665)	(11,799)
Net cash provided by (used in) investing activities		487,958	(748,667)
Cash Flows from Financing Activities
Net increase in deposits		6,898	135,545
Net increase (decrease) in repurchase agreements		104,421	(27,374)
Net decrease in FHLB borrowings with original maturities of three months or less		(220,000)	0
Repayments of FHLB borrowings with original maturities of more than three months		(75,000)	0
Proceeds from FHLB borrowings with original maturities of more than three months		110,000	0
Stock based employee benefit plans		4,316	3,031
Repurchase of common stock		(45)	0
Dividends paid		(45,236)	(29,012)
Net cash provided by financing activities		(114,646)	82,190
Net increase (decrease) in cash and cash equivalents		494,042	(519,114)
Cash and cash equivalents at beginning of period		201,940	737,729
Cash and cash equivalents at end of period		695,982	218,615
Supplemental disclosure of cash flow information:
Cash paid during the period for interest		124,927	6,906
Net (refund received) cash paid during the period for taxes		(7,920)	19,591
Recognition of operating lease right-of-use assets, other than through bank acquisitions, net of terminations		2,068	1,968
Recognition of operating lease liabilities, other than through bank acquisitions, net of terminations		2,080	1,968
Supplemental disclosure of non-cash investing activities:
Transfers from bank premises to other real estate owned	[1]	$ 5,455	$ 1,008
[1] 1 See "Note 11 - Business Combinations" for non cash transactions related to business combinations.

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, 2021		58,504,000
Beginning balance at Dec. 31, 2021	$ 1,310,736	$ 5,850	$ 963,851	$ 358,598	$ (10,569)	$ (6,994)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(97,640)			82,580		(180,220)
Stock based compensation expense (in shares)		21,000
Stock based compensation expense	6,620		6,620
Common stock transactions related to stock based employee benefit plans (in shares)		401,000
Common stock transactions related to stock based employee benefit plans	3,031	$ 43	3,958		(970)
Issuance of common stock, pursuant to acquisitions (in shares)		2,550,000
Issuance of common stock, pursuant to acquisitions	90,234	$ 255	89,979
Conversion of options, pursuant to acquisition	3,833		3,833
Dividends on common stock	(29,012)			(29,012)
Increase (decrease) in shares during period (in shares)		2,972,000
Increase (decrease) in stockholders' equity during period	(22,934)	$ 298	104,390	53,568	(970)	(180,220)
Ending balance (in shares) at Sep. 30, 2022		61,476,000
Ending balance at Sep. 30, 2022	1,287,802	$ 6,148	1,068,241	412,166	(11,539)	(187,214)
Beginning balance (in shares) at Jun. 30, 2022		61,410,000
Beginning balance at Jun. 30, 2022	1,329,575	$ 6,141	1,065,167	393,431	(11,632)	(123,532)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(34,445)			29,237		(63,682)
Stock based compensation expense (in shares)		21,000
Stock based compensation expense	2,504		2,504
Common stock transactions related to stock based employee benefit plans (in shares)		45,000
Common stock transactions related to stock based employee benefit plans	670	$ 7	570		93
Dividends on common stock	(10,502)			(10,502)
Increase (decrease) in shares during period (in shares)		66,000
Increase (decrease) in stockholders' equity during period	(41,773)	$ 7	3,074	18,735	93	(63,682)
Ending balance (in shares) at Sep. 30, 2022		61,476,000
Ending balance at Sep. 30, 2022	$ 1,287,802	$ 6,148	1,068,241	412,166	(11,539)	(187,214)
Beginning balance (in shares) at Dec. 31, 2022	71,617,852	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 acquisitions (in shares)		12,792,000
Issuance of common stock, pursuant to acquisitions	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	85,149,880	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	85,149,880	85,150,000
Ending balance at Sep. 30, 2023	$ 2,048,394	$ 8,515	$ 1,813,068	$ 453,117	$ (14,035)	$ (212,271)

CONSOLIDATED STATEMENTS OF SH_2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Dividends on common stock (in dollars per share)	$ 0.18	$ 0.17	$ 0.53	$ 0.47

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2023
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, 2023, are not necessarily indicative of the results that may be expected for the year ending December 31, 2023, 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, 2022. 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, other fair value measurements, and contingent liabilities. Adoption of New Accounting Pronouncement On January 1, 2023, the Company adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2022-02, “Troubled Debt Restructurings and Vintage Disclosures.” ASU 2022-02 eliminates the accounting guidance for troubled debt restructurings (“TDRs”) in ASC 310-40, Receivables – Troubled Debt Restructurings by Creditors, and introduces new disclosures related to modifications with borrowers that are experiencing financial difficulties. ASU 2022-02 also requires the disclosure of current-period gross write-offs by year of origination for financing receivables held at amortized cost. Upon adoption, the Company eliminated the separate allowance for credit loss estimation process for loans classified as TDRs. The adoption did not have a material impact to the consolidated financial statements. For additional information on the loans modified for borrowers in financial difficulty and for the disclosure of current-period gross write-offs by year of origination, see “Note 4 – Loans.” On January 1, 2023, the Company adopted FASB ASU 2022-01, “Fair Value Hedging - Portfolio Layer Method.” ASU 2022-01 permits the designation of multiple hedging relationships on a single closed portfolio. The guidance also expands the scope of the portfolio layer method to include non-prepayable assets, specifies eligible hedging instruments in a single-layer hedge, and provides additional guidance on the accounting for and disclosure of hedge basis adjustments under the portfolio layer method. The adoption did not have a material impact to the consolidated financial statements. For additional information on fair value hedges, see “Note 6 – Derivatives.”

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share Basic earnings per common share is computed by dividing net income available to common shareholders by the weighted average number of shares of common stock outstanding during the period. 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. For the three and nine months ended September 30, 2022, 1,505 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) 2023 2022 2023 2022 Basic earnings per share Net income $ 31,414 $ 29,237 $ 74,490 $ 82,580 Average common shares outstanding 85,142 61,442 83,457 61,327 Net income per share $ 0.37 $ 0.48 $ 0.89 $ 1.35 Diluted earnings per share Net income $ 31,414 $ 29,237 $ 74,490 $ 82,580 Average common shares outstanding 85,142 61,442 83,457 61,327 Add: Dilutive effect of employee restricted stock and stock options 524 519 536 540 Average diluted shares outstanding 85,666 61,961 83,993 61,867 Net income per share $ 0.37 $ 0.47 $ 0.89 $ 1.33 Net income has not been allocated to unvested restricted stock awards that are participating securities because the amounts that would be allocated are not material to net income per share of common stock. Unvested restricted stock awards that are participating securities represent less than one percent of all of the outstanding shares of common stock for each of the periods presented.

Securities

Securities	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale and held-to-maturity at September 30, 2023 and December 31, 2022 are summarized as follows: September 30, 2023 (In thousands) Amortized Gross Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 39,388 $ 2 $ (954) $ 38,436 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,593,306 58 (266,725) 1,326,639 Private mortgage-backed securities and collateralized mortgage obligations 139,089 25 (13,927) 125,187 Collateralized loan obligations 307,664 — (3,496) 304,168 Obligations of state and political subdivisions 21,768 — (2,116) 19,652 Other debt securities 27,293 596 (126) 27,763 Totals $ 2,128,508 $ 681 $ (287,344) $ 1,841,845 Held-to-Maturity Debt Securities Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 691,404 $ — $ (154,186) $ 537,218 Totals $ 691,404 $ — $ (154,186) $ 537,218 December 31, 2022 (In thousands) Amortized Gross Unrealized Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 13,813 $ 173 $ (339) $ 13,647 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,561,197 539 (223,083) 1,338,653 Private mortgage-backed securities and collateralized mortgage obligations 179,148 70 (12,831) 166,387 Collateralized loan obligations 313,155 — (10,251) 302,904 Obligations of state and political subdivisions 29,350 122 (1,731) 27,741 Other debt securities 22,640 197 (427) 22,410 Totals $ 2,119,303 $ 1,101 $ (248,662) $ 1,871,742 Held-to-Maturity Debt Securities Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 747,408 $ 64 $ (129,731) $ 617,741 Totals $ 747,408 $ 64 $ (129,731) $ 617,741 During the three months ended March 31, 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 three months ended March 31, 2023, with gross gains of $24 thousand and gross losses of $19 thousand. There were no other sales of securities during the three and nine months ended September 30, 2023. During the three months ended March 31, 2022, securities with a fair value of $26.0 million obtained in the acquisition of Business Bank of Florida Corp. were immediately sold. No gain or loss was recognized on the sale. There were no other sales of securities during the three and nine months ended September 30, 2022. Included in “Securities losses, net” are decreases of $0.4 million and $0.5 million for the three and nine months ended September 30, 2023, respectively, and decreases of $0.4 million and $1.1 million for the three and nine months ended September 30, 2022, respectively, in the value of investments in mutual funds that invest in CRA-qualified debt securities. At September 30, 2023, debt securities with a fair value of $1.8 billion were pledged primarily as collateral for public deposits and secured borrowings. The amortized cost and fair value of securities as of September 30, 2023, 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. September 30, 2023 Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair Due in less than one year $ — $ — $ 6,157 $ 6,083 Due after one year through five years — — 11,621 11,365 Due after five years through ten years — — 11,075 10,938 Due after ten years — — 32,303 29,702 — — 61,156 58,088 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 691,404 537,218 1,593,306 1,326,639 Private mortgage-backed securities and collateralized mortgage obligations — — 139,089 125,187 Collateralized loan obligations — — 307,664 304,168 Other debt securities — — 27,293 27,763 Totals $ 691,404 $ 537,218 $ 2,128,508 $ 1,841,845 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 available-for-sale debt securities with unrealized losses for which no allowance for credit losses has been recorded. September 30, 2023 Less Than 12 Months 12 Months or Longer Total (In thousands) Fair Unrealized Fair Unrealized Fair Unrealized U.S. Treasury securities and obligations of U.S. government agencies $ 33,881 $ (467) $ 3,569 $ (487) $ 37,450 $ (954) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 174,339 (18,084) 1,142,859 (248,641) 1,317,198 (266,725) Private mortgage-backed securities and collateralized mortgage obligations 4,814 (84) 119,348 (13,843) 124,162 (13,927) Collateralized loan obligations 59,580 (730) 244,588 (2,766) 304,168 (3,496) Obligations of state and political subdivisions 8,394 (296) 11,258 (1,820) 19,652 (2,116) Other debt securities 10,765 (126) — — 10,765 (126) Totals $ 291,773 $ (19,787) $ 1,521,622 $ (267,557) $ 1,813,395 $ (287,344) December 31, 2022 Less Than 12 Months 12 Months or Longer Total (In thousands) Fair Unrealized Fair Unrealized Fair Unrealized U.S. Treasury securities and obligations of U.S. government agencies $ 3,788 $ (328) $ 249 $ (11) $ 4,037 $ (339) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 646,651 (54,956) 667,520 (168,127) 1,314,171 (223,083) Private mortgage-backed securities and collateralized mortgage obligations 130,488 (8,255) 25,234 (4,576) 155,722 (12,831) Collateralized loan obligations 242,370 (8,343) 60,534 (1,908) 302,904 (10,251) Obligations of state and political subdivisions 23,804 (1,656) 425 (75) 24,229 (1,731) Other debt securities 11,459 (427) — — 11,459 (427) Totals $ 1,058,560 $ (73,965) $ 753,962 $ (174,697) $ 1,812,522 $ (248,662) At September 30, 2023, the Company had unrealized losses of $266.7 million on mortgage-backed securities and collateralized mortgage obligations issued by government-sponsored entities having a fair value of $1.3 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, on September 30, 2023, no allowance for credit losses has been recorded. At September 30, 2023, the Company had $13.9 million of unrealized losses on private-label residential and commercial mortgage-backed securities and collateralized mortgage obligations having a fair value of $124.2 million. The securities have a weighted average credit support of 22%. 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, 2023, no allowance for credit losses has been recorded. At September 30, 2023, the Company had $3.5 million of unrealized losses in floating rate collateralized loan obligations (“CLOs”) having a fair value of $304.2 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, 2023, all positions held by the Company are in AAA and AA tranches, with weighted average credit support of 38% and 25%, 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 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, 2023, no allowance for credit losses has been recorded. At September 30, 2023, the Company had $2.1 million of unrealized losses on municipal securities having a fair value of $19.7 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 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. As a result, as of September 30, 2023, no allowance for credit losses has been recorded. All held-to-maturity (“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. While the potential for default on these securities may be greater than zero, the long history with 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 default were to occur. As a result, as of September 30, 2023, no allowance for credit losses has been recorded. The Company has the intent and ability to hold these securities until maturity.

Loans

Loans	9 Months Ended
	Sep. 30, 2023
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 construction, multi-family property, 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 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 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 the successful operation 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 as of: September 30, 2023 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 474,788 $ 308,429 $ 10,519 $ 793,736 Commercial real estate - owner occupied 1,056,521 580,725 38,635 1,675,881 Commercial real estate - non-owner occupied 1,774,919 1,357,624 153,431 3,285,974 Residential real estate 1,693,169 703,628 22,106 2,418,903 Commercial and financial 1,187,340 340,412 56,298 1,584,050 Consumer 155,576 92,122 842 248,540 PPP Loans 809 3,293 — 4,102 Totals $ 6,343,122 $ 3,386,233 $ 281,831 $ 10,011,186 December 31, 2022 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 364,900 $ 201,333 $ 21,100 $ 587,332 Commercial real estate - owner occupied 995,154 451,202 31,946 1,478,302 Commercial real estate - non-owner occupied 1,695,411 767,138 127,225 2,589,774 Residential real estate 1,558,643 271,378 19,482 1,849,503 Commercial and financial 1,151,273 182,124 15,238 1,348,636 Consumer 177,338 89,458 19,791 286,587 PPP Loans 1,474 3,116 — 4,590 Totals $ 5,944,193 $ 1,965,749 $ 234,782 $ 8,144,724 The amortized cost basis of loans at September 30, 2023 included net deferred costs of $38.1 million. At December 31, 2022, the amortized cost basis included net deferred costs of $35.1 million. At September 30, 2023, the remaining fair value adjustments on acquired loans were $186.5 million, or 4.9% of the outstanding acquired loan balances, compared to $97.7 million, or 4.3% of the acquired loan balances at December 31, 2022. The discount is accreted into interest income over the remaining lives of the related loans on a level yield basis. Accrued interest receivable is included within Other Assets and was $37.8 million and $28.2 million at September 30, 2023 and December 31, 2022, respectively. The following tables present the status of net loan balances as of September 30, 2023 and December 31, 2022. September 30, 2023 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 474,783 $ — $ — $ — $ 5 $ 474,788 Commercial real estate - owner occupied 1,055,457 66 — — 998 1,056,521 Commercial real estate - non-owner occupied $ 1,771,201 $ 207 $ — $ — $ 3,511 $ 1,774,919 Residential real estate 1,675,299 10,279 738 — 6,853 1,693,169 Commercial and financial 1,178,839 1,168 141 31 7,161 1,187,340 Consumer 154,452 707 21 234 162 155,576 PPP Loans 809 — — — — 809 Total Portfolio Loans $ 6,310,840 $ 12,427 $ 900 $ 265 $ 18,690 $ 6,343,122 Acquired Non-PCD Loans Construction and land development $ 305,822 $ 1,462 $ 994 $ — $ 151 $ 308,429 Commercial real estate - owner occupied 578,177 74 — — 2,474 580,725 Commercial real estate - non-owner occupied 1,354,889 406 — — 2,329 1,357,624 Residential real estate 697,683 3,293 535 — 2,117 703,628 Commercial and financial 337,215 887 29 15 2,266 340,412 Consumer 78,887 6,274 3,361 2,415 1,185 92,122 PPP Loans 3,293 — — — — 3,293 Total Acquired Non-PCD Loans $ 3,355,966 $ 12,396 $ 4,919 $ 2,430 $ 10,522 $ 3,386,233 PCD Loans Construction and land development $ 10,519 $ — $ — $ — $ — $ 10,519 Commercial real estate - owner occupied 34,145 — — — 4,490 38,635 Commercial real estate - non-owner occupied 149,621 — — — 3,810 153,431 Residential real estate 18,864 573 1,571 — 1,098 22,106 Commercial and financial 53,403 — — — 2,895 56,298 Consumer 782 54 3 — 3 842 Total PCD Loans $ 267,334 $ 627 $ 1,574 $ — $ 12,296 $ 281,831 Total Loans $ 9,934,140 $ 25,450 $ 7,393 $ 2,695 $ 41,508 $ 10,011,186 December 31, 2022 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 364,841 $ — $ — $ — $ 59 $ 364,900 Commercial real estate - owner occupied 993,690 — 67 440 957 995,154 Commercial real estate - non-owner occupied 1,695,381 — — — 30 1,695,411 Residential real estate 1,550,040 1,172 147 — 7,284 1,558,643 Commercial and financial 1,142,536 1,032 476 — 7,229 1,151,273 Consumer 176,444 550 252 1 91 177,338 PPP Loans 1,099 33 — 342 — 1,474 Total Portfolio Loans $ 5,924,031 $ 2,787 $ 942 $ 783 $ 15,650 $ 5,944,193 Acquired Non-PCD Loans Construction and land development $ 201,263 $ — $ — $ — $ 70 $ 201,333 Commercial real estate - owner occupied 450,109 796 297 — — 451,202 Commercial real estate - non-owner occupied 765,633 162 — — 1,343 767,138 Residential real estate 270,215 577 — — 586 271,378 Commercial and financial 180,837 790 87 — 410 182,124 Consumer 87,317 779 616 525 221 89,458 PPP Loans 3,116 — — — — 3,116 Total Acquired Non-PCD Loans $ 1,958,490 $ 3,104 $ 1,000 $ 525 $ 2,630 $ 1,965,749 PCD Loans Construction and land development $ 20,680 $ — $ — $ — $ 420 $ 21,100 Commercial real estate - owner occupied 30,517 23 23 — 1,383 31,946 Commercial real estate - non-owner occupied 124,115 — — — 3,110 127,225 Residential real estate 17,885 10 — — 1,587 19,482 Commercial and financial 11,201 4 — — 4,033 15,238 Consumer 17,884 1,001 336 540 30 19,791 Total PCD Loans $ 222,282 $ 1,038 $ 359 $ 540 $ 10,563 $ 234,782 Total Loans $ 8,104,803 $ 6,929 $ 2,301 $ 1,848 $ 28,843 $ 8,144,724 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 reduced 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 $0.4 million and $0.8 million in interest income on nonaccrual loans during the three and nine months ended September 30, 2023, respectively. The Company recognized $0.2 million and $1.4 million in interest income on nonaccrual loans during the three and nine months ended September 30, 2022, 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, 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 $ — $ 156 $ 156 $ 71 Commercial real estate - owner occupied 1,908 6,054 7,962 320 Commercial real estate - non-owner occupied 6,868 2,782 9,650 728 Residential real estate 1,810 8,258 10,068 179 Commercial and financial 3,347 8,975 12,322 4,610 Consumer — 1,350 1,350 195 Totals $ 13,933 $ 27,575 $ 41,508 $ 6,103 December 31, 2022 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ 615 $ — $ 615 $ — Commercial real estate - owner occupied 957 1,641 2,597 41 Commercial real estate - non-owner occupied 3,347 837 4,184 230 Residential real estate 8,072 1,036 9,109 58 Commercial and financial 4,724 6,891 11,615 2,319 Consumer 40 683 723 257 Totals $ 17,755 $ 11,088 $ 28,843 $ 2,905 Collateral-Dependent Loans Loans are considered collateral-dependent when the repayment, based on the Company's assessment as of the reporting date, is expected to be provided substantially through the operation or sale of the underlying collateral and there are no other available and reliable sources of repayment. In the third quarter of 2023, $19.9 million of loans moved from individually evaluated to collectively evaluated as a result of a change in methodology for evaluating loans individually.These loans are no longer reflected as collateral-dependent loans. The following table presents collateral-dependent loans as of: (In thousands) September 30, 2023 December 31, 2022 Construction and land development $ — $ 59 Commercial real estate - owner occupied — 2,733 Commercial real estate - non-owner occupied 8,519 1,698 Residential real estate 818 11,333 Commercial and financial 2,147 10,448 Consumer — 426 Totals $ 11,484 $ 26,697 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. • Substandard Impaired: Loans typically placed on nonaccrual and considered to be collateral-dependent. • 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 principal balance of loans classified as doubtful is likely to be charged off. The following tables present the risk rating of loans and year-to-date gross charge offs by year of origination as of: September 30, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 58,254 $ 290,673 $ 134,906 $ 28,682 $ 23,102 $ 29,307 $ 216,059 $ 780,983 Special Mention — 1,214 794 — — 394 200 2,602 Substandard — — 9,975 — — — — 9,975 Substandard Impaired — — — — — 57 119 176 Doubtful — — — — — — — — Total $ 58,254 $ 291,887 $ 145,675 $ 28,682 $ 23,102 $ 29,758 $ 216,378 $ 793,736 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate - owner occupied Risk Ratings: Pass $ 99,731 $ 259,947 $ 300,315 $ 169,143 $ 186,034 $ 569,304 $ 49,385 $ 1,633,859 Special Mention — — 350 — 871 9,252 — 10,473 Substandard — 2,775 — 6,377 6,868 7,501 66 23,587 Substandard Impaired — 848 36 664 295 6,119 — 7,962 Doubtful — — — — — — — — Total $ 99,731 $ 263,570 $ 300,701 $ 176,184 $ 194,068 $ 592,176 $ 49,451 $ 1,675,881 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate - non-owner occupied Risk Ratings: Pass $ 151,486 $ 842,420 $ 653,228 $ 291,699 $ 396,142 $ 865,181 $ 37,285 $ 3,237,441 Special Mention — — 2,108 — — 13,992 — 16,100 Substandard — — 189 8,383 8,456 5,754 242 23,024 Substandard Impaired — — — 1,066 1,849 6,494 — 9,409 Doubtful — — — — — — — — Total $ 151,486 $ 842,420 $ 655,525 $ 301,148 $ 406,447 $ 891,421 $ 37,527 $ 3,285,974 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ 109 $ 109 Residential real estate Risk Ratings: Pass $ 149,010 $ 439,061 $ 646,121 $ 164,118 $ 98,896 $ 424,737 $ 475,311 $ 2,397,254 Special Mention 3 33 70 — 1,267 769 5,467 7,609 Substandard — — — — — — 768 768 September 30, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Total Substandard Impaired — — 861 126 315 9,516 2,454 13,272 Doubtful — — — — — — — — Total $ 149,013 $ 439,094 $ 647,052 $ 164,244 $ 100,478 $ 435,022 $ 484,000 $ 2,418,903 Gross Charge Offs $ — $ — $ — $ — $ — $ 159 $ 153 $ 312 Commercial and financial Risk Ratings: Pass $ 232,472 $ 377,084 $ 354,060 $ 139,626 $ 70,860 $ 94,921 $ 246,568 $ 1,515,591 Special Mention 129 3,545 1,086 1,002 461 3,583 2,842 12,648 Substandard — 7,860 20,895 4,942 5,558 2,448 1,786 43,489 Substandard Impaired 139 — 2,481 338 776 7,327 1,261 12,322 Doubtful — — — — — — — — Total $ 232,740 $ 388,489 $ 378,522 $ 145,908 $ 77,655 $ 108,279 $ 252,457 $ 1,584,050 Gross Charge Offs $ 206 $ 117 $ 109 $ 1,484 $ 265 $ 12,584 $ 418 $ 15,183 Consumer Risk Ratings: Pass $ 28,535 $ 59,686 $ 48,611 $ 20,742 $ 21,552 $ 20,634 $ 40,713 $ 240,473 Special Mention — 1,935 1,170 79 25 6 751 3,966 Substandard — — — — — — — — Substandard Impaired — 1,840 1,594 178 65 329 95 4,101 Doubtful — — — — — — — — Total $ 28,535 $ 63,461 $ 51,375 $ 20,999 $ 21,642 $ 20,969 $ 41,559 $ 248,540 Gross Charge Offs $ 9 $ 927 $ 2,146 $ 291 $ 138 $ 214 $ 139 $ 3,864 Paycheck Protection Program Risk Ratings: Pass $ — $ — $ 1,957 $ 2,145 $ — $ — $ — $ 4,102 Substandard — — — — — — — — Substandard Impaired — — — — — — — — Total $ — $ — $ 1,957 $ 2,145 $ — $ — $ — $ 4,102 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Consolidated Risk Ratings: Pass $ 719,488 $ 2,268,871 $ 2,139,198 $ 816,155 $ 796,586 $ 2,004,084 $ 1,065,321 $ 9,809,703 Special Mention 132 6,727 5,578 1,081 2,624 27,996 9,260 53,398 Substandard — 10,635 31,059 19,702 20,882 15,703 2,862 100,843 Substandard Impaired 139 2,688 4,972 2,372 3,300 29,842 3,929 47,242 Doubtful — — — — — — — — Total $ 719,759 $ 2,288,921 $ 2,180,807 $ 839,310 $ 823,392 $ 2,077,625 $ 1,081,372 $ 10,011,186 Gross Charge Offs $ 215 $ 1,044 $ 2,255 $ 1,775 $ 403 $ 12,957 $ 819 $ 19,468 December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 223,204 $ 209,738 $ 18,239 $ 24,600 $ 12,783 $ 19,022 $ 50,960 $ 558,546 Special Mention 14,523 452 — 3,153 — — 15 18,143 Substandard — 9,227 — — 959 — — 10,186 Substandard Impaired — 52 — — — 405 — 457 Doubtful — — — — — — — — Total $ 237,727 $ 219,469 $ 18,239 $ 27,753 $ 13,742 $ 19,427 $ 50,975 $ 587,332 Commercial real estate - owner occupied Risk Ratings: Pass $ 215,453 $ 251,638 $ 180,081 $ 185,286 $ 121,568 $ 467,963 $ 32,253 $ 1,454,242 Special Mention 694 — 2,363 4,403 2,548 2,869 — 12,877 Substandard — — 667 2,625 573 4,444 — 8,309 Substandard Impaired — — — 311 294 2,269 — 2,874 Doubtful — — — — — — — — Total $ 216,147 $ 251,638 $ 183,111 $ 192,625 $ 124,983 $ 477,545 $ 32,253 $ 1,478,302 Commercial real estate - non-owner occupied Risk Ratings: Pass $ 593,364 $ 530,462 $ 231,693 $ 331,173 $ 228,077 $ 575,656 $ 35,326 $ 2,525,751 Special Mention — 16,257 735 5,438 — 4,975 — 27,405 Substandard — 192 19,315 — 5,515 7,412 — 32,434 Substandard Impaired — — 1,044 1,849 30 1,261 — 4,184 Doubtful — — — — — — — — Total $ 593,364 $ 546,911 $ 252,787 $ 338,460 $ 233,622 $ 589,304 $ 35,326 $ 2,589,774 Residential real estate Risk Ratings: Pass $ 270,054 $ 552,950 $ 121,879 $ 77,100 $ 97,900 $ 292,867 $ 423,764 $ 1,836,514 Special Mention — — 50 — 25 269 884 1,228 Substandard — — — — — 343 85 428 Substandard Impaired — — 133 32 83 9,515 1,570 11,333 Doubtful — — — — — — — — Total $ 270,054 $ 552,950 $ 122,062 $ 77,132 $ 98,008 $ 302,994 $ 426,303 $ 1,849,503 Commercial and financial Risk Ratings: Pass $ 359,833 $ 320,307 $ 140,450 $ 77,562 $ 57,924 $ 58,648 $ 292,818 $ 1,307,542 Special Mention 1,244 423 106 474 195 259 2,998 5,699 Substandard — 67 942 6,304 1,603 1,683 13,114 23,713 Substandard Impaired 5 58 5,109 147 3,642 2,545 176 11,682 Doubtful — — — — — — — — Total $ 361,082 $ 320,855 $ 146,607 $ 84,487 $ 63,364 $ 63,135 $ 309,106 $ 1,348,636 Consumer Risk Ratings: Pass $ 93,012 $ 77,889 $ 27,982 $ 28,772 $ 11,690 $ 16,480 $ 29,725 $ 285,550 Special Mention — — — 250 2 134 30 416 Substandard — — 11 — — 191 — 202 Substandard Impaired — — 18 55 36 103 207 419 Doubtful — — — — — — — — Total $ 93,012 $ 77,889 $ 28,011 $ 29,077 $ 11,728 $ 16,908 $ 29,962 $ 286,587 Paycheck Protection Program Risk Ratings: Pass $ — $ 2,708 $ 1,882 $ — $ — $ — $ — $ 4,590 December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Total Substandard $ — $ — $ — $ — $ — $ — $ — $ — Substandard Impaired $ — $ — $ — $ — $ — $ — $ — $ — Total $ — $ 2,708 $ 1,882 $ — $ — $ — $ — $ 4,590 Consolidated Risk Ratings: Pass $ 1,754,920 $ 1,945,692 $ 722,206 $ 724,493 $ 529,942 $ 1,430,636 $ 864,846 $ 7,972,735 Special Mention 16,461 17,132 3,254 13,718 2,770 8,506 3,927 65,768 Substandard — 9,486 20,935 8,929 8,650 14,073 13,199 75,272 Substandard Impaired 5 110 6,304 2,394 4,085 16,098 1,953 30,949 Doubtful — — — — — — — — Total $ 1,771,386 $ 1,972,420 $ 752,699 $ 749,534 $ 545,447 $ 1,469,313 $ 883,925 $ 8,144,724 Troubled Borrower Modifications On January 1, 2023, the Company adopted ASU 2022-02 which includes disclosure requirements related to certain modifications of loans to borrowers experiencing financial difficulty, which the Company refers to as troubled borrower modifications (“TBMs”). TBMs are typically in the form of an interest rate reduction, an extension of the amortization period, and/or converting the loan to interest only for a limited period of time. In addition to the change in payment terms, the Company seeks to obtain additional collateral and/or guarantors to provide additional support for the loan. The Company does not typically provide forgiveness of principal as a modification. As of September 30, 2023, the Company had eight loans classified as TBMs totaling $2.2 million, which is considered immaterial. To the extent there are additional modifications in subsequent periods, the Company will disclose additional information about the nature of the modifications, the financial effect of the modifications, and payment defaults of TBMs in the 12 months prior to default, among any other relevant disclosures.

Allowance for Credit Losses

Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2023
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, 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 Three Months Ended September 30, 2022 (In thousands) Beginning Provision Charge- Recoveries TDR Ending Construction and land development 2,552 792 — 1 — 3,345 Commercial real estate - owner occupied 7,376 (2,182) — — — 5,194 Commercial real estate - non-owner occupied 46,459 (6,841) (179) 23 — 39,462 Residential real estate 14,821 11,193 — 31 (8) 26,037 Commercial and financial 17,144 (1,457) (77) 92 (1) 15,701 Consumer 2,417 3,171 (152) 158 (4) 5,590 Totals $ 90,769 $ 4,676 $ (408) $ 305 $ (13) $ 95,329 Nine Months Ended September 30, 2023 (In thousands) Beginning Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries Ending 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 Nine Months Ended September 30, 2022 (In thousands) Beginning Balance Allowance on PCD Loans Acquired During the Period Provision for Credit Losses Charge- Offs Recoveries TDR Allowance Adjustments Ending Balance Construction and land development $ 2,751 $ — $ 529 $ — $ 65 $ — $ 3,345 Commercial real estate - owner occupied 8,579 — (3,385) — — — 5,194 Commercial real estate - non-owner occupied 36,617 31 2,961 (179) 32 — 39,462 Residential real estate 12,811 17 12,901 (1) 334 (25) 26,037 Commercial and financial 19,744 3 (3,585) (899) 440 (2) 15,701 Consumer 2,813 — 2,633 (446) 596 (6) 5,590 Totals $ 83,315 $ 51 $ 12,054 $ (1,525) $ 1,467 $ (33) $ 95,329 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 a period that has been deemed reasonable and supportable, and in segments where it can no longer develop reasonable and supportable forecasts, the Company reverts to longer-term historical loss experience to estimate losses over the remaining life of the loans. As of September 30, 2023 and December 31, 2022, the Company utilized a blend of Moody’s most recent “U.S. Macroeconomic Outlook Baseline” and “Alternative Scenario 3 Downside 90th Percentile” scenarios and considered the uncertainty associated with the assumptions in both scenarios, including continued actions taken by the Federal Reserve with regard to monetary policy and interest rates and the potential impact of those actions, the ongoing Russia-Ukraine conflict and the magnitude of the resulting market disruption, the potential impact of persistently high inflation on economic growth and expectations around a recession occurring over the next 12 to 24 months. Outcomes in any or all of these factors could differ from the scenarios identified above, and the Company incorporated qualitative considerations reflecting the risk of uncertain economic conditions, and for additional dimensions of risk not 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, 2023. In the Construction and Land Development segment, the increase in the allowance is due to an increase in expected credit losses driven by changes in collateral type and estimated collateral values. In this segment, the primary source of repayment is typically from proceeds of the sale, refinancing, 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 decreased from the prior quarter due to slight improvements in the forecast for macroeconomic factors such as the unemployment rate and BBB credit spread. 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 decrease in the allowance is primarily attributed to lower loan balances. Repayment is often dependent upon rental income from the successful operation of the underlying 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. The increase in the allowance is due to an increase in loan balances and an increase in expected credit losses. 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 reserves is primarily attributed to a complete charge-off of an $11.3 million acquired loan that was fully reserved, partially offset by an increase in expected credit losses on commercial and industrial unsecured loans. 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 the allowance is primarily due to a decrease in loan balances. The allowance for credit losses is composed of specific allowances for loans individually evaluated and general allowances for loans grouped into loan pools based on similar characteristics, which are collectively evaluated. In the third quarter of 2023, $19.9 million of loans moved from individually evaluated to collectively evaluated as a result of a change in methodology for evaluating loans individually. The impact on the reserve was not material. The Company’s loan portfolio and related allowance at September 30, 2023 and December 31, 2022 are shown in the following tables: September 30, 2023 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ — $ — $ 793,736 $ 7,685 $ 793,736 $ 7,685 Commercial real estate - owner occupied 1,908 — 1,673,973 6,065 1,675,881 6,065 Commercial real estate - non-owner occupied 8,519 530 3,277,455 51,911 3,285,974 52,441 Residential real estate 1,810 — 2,417,093 38,735 2,418,903 38,735 Commercial and financial 23,287 8,062 1,564,865 23,463 1,588,152 31,525 Consumer — — 248,540 13,210 248,540 13,210 Totals $ 35,524 $ 8,592 $ 9,975,662 $ 141,069 $ 10,011,186 $ 149,661 December 31, 2022 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ 59 $ — $ 587,273 $ 6,464 $ 587,332 $ 6,464 Commercial real estate - owner occupied 3,346 41 1,474,956 6,010 1,478,302 6,051 Commercial real estate - non-owner occupied 4,183 230 2,585,591 43,028 2,589,774 43,258 Residential real estate 11,333 275 1,838,170 29,330 1,849,503 29,605 Commercial and financial 12,167 2,639 1,341,059 13,009 1,353,226 15,648 Consumer 426 362 286,161 12,507 286,587 12,869 Totals $ 31,514 $ 3,547 $ 8,113,210 $ 110,348 $ 8,144,724 $ 113,895

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Derivatives Back-to-Back Swaps 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 qualify as 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. No net gains or losses have been recognized to date on these instruments. As of September 30, 2023, the interest rate swaps had an aggregate notional value of $505.7 million, with a fair value of $37.4 million recorded in Other Assets and Other Liabilities. As of December 31, 2022, the interest rate swaps had an aggregate notional value of $312.8 million, with a fair value of $23.1 million recorded in Other Assets and Other Liabilities. The weighted average maturity was 6.0 years at September 30, 2023 and 6.7 years at December 31, 2022. Interest Rate Floors Designated as Cash Flow Hedges The Company has entered into interest rate floor contracts to mitigate exposure to the variability of future cash flows due to changes in interest rates on certain segments of its variable-rate loans. During 2020, the Company entered into two interest rate floor contracts, each with a notional amount of $150.0 million, maturing in October 2023 and November 2023, respectively. The Company considers these derivatives to be highly effective at achieving offsetting changes in cash flows attributable to changes in interest rates and has designated them as cash flow hedges. Therefore, changes in the fair value of these derivative instruments are recognized in other comprehensive income. Amortization of the premium paid on cash flow hedges is recognized in earnings over the term of the hedge in the same caption as the hedged item. As of September 30, 2023 and December 31, 2022, the interest rate floors had a nominal fair value. For 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 and into interest income. For the three and nine months ended September 30, 2022, the Company recognized a loss through other comprehensive income of $0.1 million and $0.3 million, respectively, and reclassified $0.1 million and $0.3 million, respectively, out of accumulated other comprehensive income and into interest income. During the next twelve months, the Company expects to reclassify $0.1 million from accumulated other comprehensive income into interest income related to these agreements. Interest Rate Swaps Designated as Fair Value Hedges In April 2023, the Company entered into two interest rate swap contracts to hedge the risk of changes in fair value of the AFS portfolio due to changes in the Secured Overnight Financing Rate (“SOFR”) interest rate. Each fair value hedge utilizes the portfolio layer method hedge designation type for a notional amount of $200 million, maturing April 2025. The Company considers these derivatives to be highly effective at offsetting changes in interest rates and will assess the effectiveness on a monthly basis. Therefore, changes in interest rates affecting the fair value of these derivative contracts are recognized in other comprehensive income. These derivative instruments are primarily for risk management purposes. As of September 30, 2023, the interest rate swaps had a notional value of $400 million with a fair value of $6.9 million. For the three and nine months ended September 30, 2023, the Company recognized gains through other comprehensive income of $0.7 million and $7.0 million, respectively, and reclassified a loss of $5.4 thousand and gain of $0.1 million, respectively, out of accumulated other comprehensive income and into interest income. (In thousands) Notional Amount Fair Value Balance Sheet Category At September 30, 2023 Back-to-back swaps $ 505,742 $ 37,362 Other Assets and Other Liabilities Interest rate floors 300,000 — Other Assets Fair value hedges 400,000 6,914 Other Assets At December 31, 2022 Back-to-back swaps $ 312,808 $ 23,140 Other Assets and Other Liabilities Interest rate floors 300,000 2 Other Assets 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, 2023 December 31, 2022 September 30, 2023 December 31, 2022 Available-for-sale securities 1 $ 574,823 $ — $ 7,014 $ — 1 At September 30, 2023, and December 31, 2022, the amortized cost basis and unallocated basis adjustments used in hedging relationships was $696.2 million and $0, respectively. Refer to Note 3 for a reconciliation of the amortized cost and fair value of available-for-sale securities.

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	9 Months Ended
	Sep. 30, 2023
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, 2023 December 31, 2022 Fair value of pledged securities - overnight and continuous: Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 358,448 $ 184,967

Equity Capital

Equity Capital	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Equity Capital	Equity CapitalThe Company is well-capitalized and at September 30, 2023, 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, 2023
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities	Contingent LiabilitiesThe 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, 2023
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, 2023 and December 31, 2022 included: (In thousands) Fair Value Quoted Prices Significant Significant At September 30, 2023 Financial Assets Available-for-sale debt securities 1 $ 1,841,845 $ 188 $ 1,841,657 $ — Derivative financial instruments 2 44,276 — 44,276 — Loans held for sale 2 2,979 — 2,979 — Loans, net 3 10,482 — 818 9,664 Other real estate owned 4 7,216 — 7,216 — Equity securities 5 13,120 13,120 — — Financial Liabilities Derivative financial instruments 2 $ 37,362 $ — $ 37,362 $ — At December 31, 2022 Financial Assets Available-for-sale debt securities 1 $ 1,871,742 $ 186 $ 1,871,556 $ — Derivative financial instruments 2 23,142 — 23,142 — Loans held for sale 2 3,151 — 3,151 — Loans 3 8,513 — 1,183 7,330 Other real estate owned 4 2,301 — 2,301 — Equity securities 5 8,220 8,220 — — Financial Liabilities Derivative financial instruments 2 $ 23,142 $ — $ 23,142 $ — 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 See “Note 4 – Loans.” Nonrecurring fair value adjustments to collateral-dependent loans reflect full or partial write-downs that are based on current appraised values of the collateral in accordance with ASC Topic 310. 4 Fair value is measured on a nonrecurring basis in accordance with ASC Topic 360. 5 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. Available-for-sale debt securities : Level 1 securities consist of U.S. Treasury securities. Other 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. The fair value of collateralized loan obligations is determined from broker quotes. 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. Derivative financial instruments : The Company offers interest rate swaps to certain loan customers to allow them to hedge the risk of rising interest rates on their variable rate loans. The Company originates a variable rate loan and enters into a variable-to-fixed interest rate swap with the customer. The Company also enters into an offsetting swap with a correspondent bank. These back-to-back agreements are intended to offset each other and allow the Company to originate a variable rate loan, while providing a contract for fixed interest payments for the customer. The fair value of these derivatives is based on a discounted cash flow approach. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of interest rate swaps is classified as Level 2. Other derivatives are also classified within Level 2. The fair values of these instruments are based upon the estimated amount the Company would receive or pay to terminate the instruments, taking into account current interest rates and, when appropriate, the current creditworthiness of the counterparties. Loans held for sale : Fair values are based upon estimated values to be received from independent third party purchasers. These loans are intended for sale and the Company believes that the fair value is the best indicator of the resolution of these loans. Fair market value changes occur due to changes in interest rates, the borrower’s credit, the secondary loan market and the market for a borrower’s debt. Interest income is recorded based on the contractual terms of the loan and in accordance with the Company’s policy on loans held for investment. None of the loans were 90 days or more past due or on nonaccrual as of September 30, 2023 and December 31, 2022. The aggregate fair value and contractual balance of loans held for sale as of September 30, 2023 and December 31, 2022 is as follows: (In thousands) September 30, 2023 December 31, 2022 Aggregate fair value $ 2,979 $ 3,151 Contractual balance 2,846 3,071 Excess 133 80 Loans : Loans carried at fair value consist of collateral-dependent real estate loans. Fair value is based on recent real estate appraisals and evaluations may use either a single valuation approach or a combination of approaches, such as comparative sales, cost and/or income approach. A significant unobservable input in the income approach is the estimated capitalization rate for a given piece of collateral. At September 30, 2023, capitalization rates utilized to determine fair value of the underlying collateral averaged approximately 6.9%. 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. If such adjustments are made, the fair value of these loans is considered Level 3 in the fair value hierarchy. Collateral-dependent loans measured at fair value totaled $11.5 million with a specific reserve of $1.0 million at September 30, 2023, compared to $10.2 million with a specific reserve of $2.9 million at December 31, 2022. For loans classified as Level 3, changes included loan additions of $3.2 million offset by $6.3 million in paydowns and charge-offs and for the nine months ended September 30, 2023. Other real estate owned : When appraisals are used to determine fair value and the appraisals are based on a market approach, the fair value of other real estate owned (“OREO”) is classified as a Level 2 input. When the fair value of OREO is based on appraisals which require significant adjustments to market-based valuation inputs or apply an income approach based on unobservable cash flows, the fair value of OREO is classified as Level 3. 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 three and nine months ended September 30, 2023, there were no such transfers. 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, 2023 and December 31, 2022 is as follows: (In thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2023 Financial Assets Debt securities held-to-maturity 1 $ 691,404 $ — $ 537,218 $ — Time deposits with other banks 4,357 — 4,241 — Loans, net 9,851,043 — — 9,591,237 Financial Liabilities Deposit liabilities 12,107,834 — — 12,106,525 Federal Home Loan Bank (“FHLB”) borrowings 110,000 — — 110,293 Subordinated debt, net 106,136 — 98,110 — December 31, 2022 Debt securities held-to-maturity 1 $ 747,408 $ — $ 617,741 $ — Time deposits with other banks 3,236 — 2,989 — Loans, net 8,022,316 — — 7,845,375 Financial Liabilities Deposit liabilities 9,981,595 — — 9,976,125 Federal Home Loan Bank (“FHLB”) borrowings 150,000 — — 149,450 Subordinated debt 84,533 — 82,226 — 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 having 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, short-term FHLB borrowings 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, 2023 and December 31, 2022: 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, 2023
Business Combination and Asset Acquisition [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 expands the Company’s presence in the tri-county South Florida market, which includes Miami-Dade, Broward, and Palm Beach counties, Florida’s largest MSA and the 8 th 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 $251.2 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. The fair values initially assigned to assets acquired and liabilities assumed are preliminary and could change for up to one year after the closing date of the acquisition as new information and circumstances relative to closing date fair values becomes known. As part of the acquisition of Professional, options 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 3,135 251,226 BOLI 55,071 — 55,071 Other Assets 74,232 2,409 76,641 Total Assets $ 2,729,209 $ — $ 2,729,209 Liabilities: Deposits $ 2,119,341 $ — $ 2,119,341 Subordinated debt 21,141 — 21,141 Other Liabilities 167,680 — 167,680 Total Liabilities $ 2,308,162 $ — $ 2,308,162 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 June 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. Acquisition of Apollo Bancshares, Inc. On October 7, 2022, the Company completed its acquisition of Apollo Bancshares, Inc. (“Apollo”). Simultaneously, upon completion of the merger of Apollo and the Company, Apollo Bank was merged with and into Seacoast Bank. Prior to the acquisition, Apollo Bank operated five branches in Miami-Dade County. As a result of this acquisition, the Company expects to expand its customer base and leverage operating costs through economies of scale, and positively affect the Company’s operating results. Under the terms of the merger agreement, Apollo shareholders received 1.006529 shares of Seacoast common stock for each share of Apollo common stock, and the minority interest holders in Apollo Bank received 1.195651 shares of Seacoast common stock for each share of Apollo Bank common stock. (In thousands, except per share data) October 7, 2022 Number of Apollo common shares outstanding 3,766 Per share exchange ratio 1.0065 Number of shares of SBCF common stock issued 3,791 Number of Apollo Bank minority interest shares outstanding 609 Per share exchange ratio 1.1957 Number of shares of SBCF common stock issued 728 Total number of shares of SBCF common stock issued 4,519 Multiplied by common stock price per share at October 7, 2022 $ 30.83 Value of SBCF common stock issued $ 139,307 Cash paid for fractional shares 5 Fair value of Apollo options and warrants converted 6,530 Total purchase price $ 145,842 The acquisition of Apollo was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations . The Company recognized goodwill of $90.5 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. The fair values initially assigned to assets acquired and liabilities assumed are preliminary and could change for up to one year after the closing date of the acquisition as new information and circumstances relative to closing date fair values becomes known. As part of the acquisition of Apollo, options and warrants were granted to replace outstanding Apollo awards. These awards were fully vested upon acquisition. The full value of the replacement awards, $6.5 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) October 7, 2022 Period Adjustments October 7, 2022 Assets: Cash and cash equivalents $ 41,001 $ — $ 41,001 Investment securities 203,596 — 203,596 Loans 666,522 — 666,522 Bank premises and equipment 7,809 — 7,809 Core deposit intangibles 28,699 — 28,699 Goodwill 90,237 251 90,488 Other Assets 52,724 (251) 52,473 Total Assets $ 1,090,588 $ — $ 1,090,588 Liabilities: Deposits $ 854,774 $ — $ 854,774 Other Liabilities 89,972 — 89,972 Total Liabilities $ 944,746 $ — $ 944,746 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. October 7, 2022 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 74,126 $ 70,654 Commercial real estate - owner occupied 131,093 121,600 Commercial real estate - non-owner occupied 374,673 340,561 Residential real estate 76,254 75,957 Commercial and financial 50,125 46,695 Consumer 11,307 11,055 Total acquired loans $ 717,578 $ 666,522 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) October 7, 2022 Book balance of loans at acquisition $ 107,744 Allowance for credit losses at acquisition (2,658) Non-credit related discount (14,191) Total PCD loans acquired $ 90,895 The acquisition of Apollo resulted in the addition of $7.8 million in allowance for credit losses, including the $2.7 million identified in the table above for PCD loans, and $5.1 million for non-PCD loans recorded through the provision for credit losses at the date of acquisition. 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. Acquisition of Drummond Banking Company. On October 7, 2022, the Company completed its acquisition of Drummond Banking Company (“Drummond”). Simultaneously, upon completion of the merger of Drummond and the Company, Drummond’s wholly owned subsidiary bank, Drummond Community Bank, was merged with and into Seacoast Bank. Prior to the acquisition, Drummond Community Bank operated 18 branches across North Florida. As a result of this acquisition, the Company expects to expand its customer base and leverage operating cost through economies of scale, and positively affect the Company’s operating results. The Company acquired 100% of the outstanding common stock of Drummond. Under the terms of the merger agreement, each share of Drummond common stock was converted into the right to receive 51.9561 shares of Seacoast common stock. (In thousands, except per share data) October 7, 2022 Number of Drummond common shares outstanding 99 Per share exchange ratio 51.9561 Number of shares of SBCF common stock issued 5,136 Multiplied by common stock price per share at October 7, 2022 $ 30.83 Total purchase price $ 158,332 The acquisition of Drummond was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations . The Company recognized goodwill of $103.6 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. The fair values initially assigned to assets acquired and liabilities assumed are preliminary and could change for up to one year after the closing date of the acquisition as new information and circumstances relative to closing date fair values becomes known. Initially Measured Measurement As Adjusted (In thousands) October 7, 2022 Period Adjustments October 7, 2022 Assets: Cash and cash equivalents $ 31,805 $ — $ 31,805 Investment securities 327,852 — 327,852 Loans 544,694 — 544,694 Bank premises and equipment 29,370 — 29,370 Core deposit and other intangibles 32,983 — 32,983 Goodwill 103,476 173 103,649 Other Assets 49,812 (173) 49,639 Total Assets $ 1,119,992 $ — $ 1,119,992 Liabilities: Deposits $ 881,281 $ — $ 881,281 Other Liabilities 80,379 — 80,379 Total Liabilities $ 961,660 $ — $ 961,660 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. October 7, 2022 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 155,041 $ 140,401 Commercial real estate - owner occupied 112,768 106,152 Commercial real estate - non-owner occupied 26,520 24,744 Residential real estate 85,767 78,663 Commercial and financial 88,026 82,067 Consumer 118,880 112,667 Total acquired loans $ 587,002 $ 544,694 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) October 7, 2022 Book balance of loans at acquisition $ 58,878 Allowance for credit losses at acquisition (2,566) Non-credit related discount (4,607) Total PCD loans acquired $ 51,705 The acquisition of Drummond resulted in the addition of $12.5 million in allowance for credit losses, including the $2.6 million identified in the table above for PCD loans, and $9.9 million for non-PCD loans recorded through the provision for credit losses at the date of acquisition. 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. Acquisition of Business Bank of Florida, Corp. On January 3, 2022, the Company completed its acquisition of Business Bank of Florida, Corp., (“BBFC”). Simultaneously, upon completion of the merger of BBFC and the Company, BBFC’s wholly owned subsidiary bank, Florida Business Bank, was merged with and into Seacoast Bank. Prior to the acquisition, Florida Business Bank operated one branch in Melbourne, Florida. As a result of this acquisition, the Company expects to expand its customer base and leverage operating cost through economies of scale, and positively affect the Company’s operating results. The Company acquired 100% of the outstanding common stock of BBFC. Under the terms of the merger agreement, each share of BBFC common stock was converted into the right to receive 0.7997 of a share of Seacoast common stock. (In thousands, except per share data) January 3, 2022 Number of BBFC common shares outstanding 1,112 Per share exchange ratio 0.7997 Number of shares of SBCF common stock issued 889 Multiplied by common stock price per share on January 3, 2022 $ 35.39 Value of SBCF common stock issued $ 31,480 Fair value of BBFC options converted 497 Total purchase price $ 31,977 The acquisition of BBFC was accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations . The Company recognized goodwill of $8.0 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 BBFC acquisition, options were granted to replace outstanding BBFC options. These options were fully vested upon acquisition. The full value of the replacement options, $0.5 million, was associated with pre-combination service and was therefore included in the calculation of the total purchase consideration. (In thousands) Measured Assets: Cash $ 38,332 Investment securities 26,011 Loans 121,774 Bank premises and equipment 2,102 Core deposit intangibles 2,621 Goodwill 7,962 Total assets $ 198,802 Liabilities: Deposits 166,326 Other liabilities 499 Total liabilities $ 166,825 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. January 3, 2022 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 8,677 $ 8,414 Commercial real estate - owner occupied 45,403 44,564 Commercial real estate - non-owner occupied 53,065 52,034 Residential real estate 5,377 5,421 Commercial and financial 11,335 11,280 Consumer 59 61 Total acquired loans $ 123,916 $ 121,774 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) (In thousands) Book balance of loans at acquisition $ 714 Allowance for credit losses at acquisition (15) Non-credit related discount (48) Total PCD loans acquired $ 651 The acquisition of BBFC resulted in the addition of $1.8 million in allowance for credit losses, including the $15 thousand identified in the table above for PCD loans, and $1.8 million for non-PCD loans recorded through the provision for credit losses at the date of acquisition. 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. Acquisition of Sabal Palm Bancorp, Inc. On January 3, 2022, the Company completed its acquisition of Sabal Palm Bancorp, Inc. (“Sabal Palm”). Simultaneously, upon completion of the merger of Sabal Palm and the Company, Sabal Palm’s wholly owned subsidiary bank, Sabal Palm Bank, was merged with and into Seacoast Bank. Prior to the acquisition, Sabal Palm Bank operated three branches in the Sarasota area. As a result of this acquisition, the Company expects to expand its customer base and leverage operating cost through economies of scale, and positively affect the Company’s operating results. The Company acquired 100% of the outstanding common stock of Sabal Palm. Under the terms of the merger agreement, each share of Sabal Palm common stock was converted into the right to receive 0.2203 of a share of Seacoast common stock. (In thousands, except per share data) January 3, 2022 Number of Sabal Palm common shares outstanding 7,536 Per share exchange ratio 0.2203 Number of shares of SBCF common stock issued 1,660 Multiplied by common stock price per share on January 3, 2022 $ 35.39 Value of SBCF common stock issued $ 58,762 Fair value of Sabal Palm options converted 3,336 Total purchase price $ 62,098 The acquisition of Sabal Palm was accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations . The Company recognized goodwill of $26.5 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 Sabal Palm acquisition, options were granted to replace outstanding Sabal Palm options. These options were fully vested upon acquisition. The full value of the replacement options, $3.3 million, was associated with pre-combination service and was therefore included in the calculation of the total purchase consideration. (In thousands) Measured Assets: Cash $ 170,609 Time deposits with other banks 6,473 Loans 246,152 Bank premises and equipment 1,745 Core deposit intangibles 5,587 Goodwill 26,489 Other assets 5,189 Total assets $ 462,244 Liabilities: Deposits 395,952 Other liabilities 4,194 Total liabilities $ 400,146 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. January 3, 2022 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 9,256 $ 9,009 Commercial real estate - owner occupied 57,690 56,591 Commercial real estate - non-owner occupied 89,153 87,280 Residential real estate 71,469 72,227 Commercial and financial 21,109 20,813 Consumer 233 232 Total acquired loans $ 248,910 $ 246,152 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 3, 2022 Book balance of loans at acquisition $ 3,703 Allowance for credit losses at acquisition (37) Non-credit related discount (663) Total PCD loans acquired $ 3,003 The acquisition of Sabal Palm resulted in the addition of $3.4 million in allowance for credit losses, including the $37 thousand identified in the table above for PCD loans, and $3.4 million for non-PCD loans recorded through the provision for credit losses at the date of acquisition. 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. Acquisition Costs There were no acquisition costs included in the Company's income statement for the three months ended September 30, 2023, and $33.2 million for the nine months ended September 30, 2023. Acquisition costs included in the Company’s income statement for the three and nine months ended September 30, 2022 were $2.1 million and $11.8 million, respectively. Pro-Forma Information Pro-forma data as of September 30, 2023 and 2022 present information as if the acquisition of Professional occurred at the beginning of 2022. The pro-forma information is presented for illustrative purposes only and is not necessarily indicative of the results of operations that would have occurred if the transactions had been effected on the assumed dates. Three Months Ended Nine Months Ended September 30, September 30, (In thousands, except per share data) 2023 2022 2023 2022 Net interest income $ 119,306 $ 121,341 $ 388,189 $ 339,213 Net income available to common shareholders 31,414 46,076 99,905 89,728 EPS - basic 0.37 0.62 1.18 1.21 EPS - diluted 0.37 0.62 1.17 1.20

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net Income	$ 31,414	$ 29,237	$ 74,490	$ 82,580

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
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, 2023
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, other fair value measurements, and contingent liabilities.
Adoption of New Accounting Pronouncement	Adoption of New Accounting Pronouncement On January 1, 2023, the Company adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2022-02, “Troubled Debt Restructurings and Vintage Disclosures.” ASU 2022-02 eliminates the accounting guidance for troubled debt restructurings (“TDRs”) in ASC 310-40, Receivables – Troubled Debt Restructurings by Creditors, and introduces new disclosures related to modifications with borrowers that are experiencing financial difficulties. ASU 2022-02 also requires the disclosure of current-period gross write-offs by year of origination for financing receivables held at amortized cost. Upon adoption, the Company eliminated the separate allowance for credit loss estimation process for loans classified as TDRs. The adoption did not have a material impact to the consolidated financial statements. For additional information on the loans modified for borrowers in financial difficulty and for the disclosure of current-period gross write-offs by year of origination, see “Note 4 – Loans.” On January 1, 2023, the Company adopted FASB ASU 2022-01, “Fair Value Hedging - Portfolio Layer Method.” ASU 2022-01 permits the designation of multiple hedging relationships on a single closed portfolio. The guidance also expands the scope of the portfolio layer method to include non-prepayable assets, specifies eligible hedging instruments in a single-layer hedge, and provides additional guidance on the accounting for and disclosure of hedge basis adjustments under the portfolio layer method. The adoption did not have a material impact to the consolidated financial statements. For additional information on fair value hedges, see “Note 6 – Derivatives.”
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, 2023
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) 2023 2022 2023 2022 Basic earnings per share Net income $ 31,414 $ 29,237 $ 74,490 $ 82,580 Average common shares outstanding 85,142 61,442 83,457 61,327 Net income per share $ 0.37 $ 0.48 $ 0.89 $ 1.35 Diluted earnings per share Net income $ 31,414 $ 29,237 $ 74,490 $ 82,580 Average common shares outstanding 85,142 61,442 83,457 61,327 Add: Dilutive effect of employee restricted stock and stock options 524 519 536 540 Average diluted shares outstanding 85,666 61,961 83,993 61,867 Net income per share $ 0.37 $ 0.47 $ 0.89 $ 1.33 Net income has not been allocated to unvested restricted stock awards that are participating securities because the amounts that would be allocated are not material to net income per share of common stock. Unvested restricted stock awards that are participating securities represent less than one percent of all of the outstanding shares of common stock for each of the periods presented.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2023
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 and held-to-maturity at September 30, 2023 and December 31, 2022 are summarized as follows: September 30, 2023 (In thousands) Amortized Gross Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 39,388 $ 2 $ (954) $ 38,436 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,593,306 58 (266,725) 1,326,639 Private mortgage-backed securities and collateralized mortgage obligations 139,089 25 (13,927) 125,187 Collateralized loan obligations 307,664 — (3,496) 304,168 Obligations of state and political subdivisions 21,768 — (2,116) 19,652 Other debt securities 27,293 596 (126) 27,763 Totals $ 2,128,508 $ 681 $ (287,344) $ 1,841,845 Held-to-Maturity Debt Securities Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 691,404 $ — $ (154,186) $ 537,218 Totals $ 691,404 $ — $ (154,186) $ 537,218 December 31, 2022 (In thousands) Amortized Gross Unrealized Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 13,813 $ 173 $ (339) $ 13,647 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,561,197 539 (223,083) 1,338,653 Private mortgage-backed securities and collateralized mortgage obligations 179,148 70 (12,831) 166,387 Collateralized loan obligations 313,155 — (10,251) 302,904 Obligations of state and political subdivisions 29,350 122 (1,731) 27,741 Other debt securities 22,640 197 (427) 22,410 Totals $ 2,119,303 $ 1,101 $ (248,662) $ 1,871,742 Held-to-Maturity Debt Securities Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 747,408 $ 64 $ (129,731) $ 617,741 Totals $ 747,408 $ 64 $ (129,731) $ 617,741
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 and held-to-maturity at September 30, 2023 and December 31, 2022 are summarized as follows: September 30, 2023 (In thousands) Amortized Gross Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 39,388 $ 2 $ (954) $ 38,436 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,593,306 58 (266,725) 1,326,639 Private mortgage-backed securities and collateralized mortgage obligations 139,089 25 (13,927) 125,187 Collateralized loan obligations 307,664 — (3,496) 304,168 Obligations of state and political subdivisions 21,768 — (2,116) 19,652 Other debt securities 27,293 596 (126) 27,763 Totals $ 2,128,508 $ 681 $ (287,344) $ 1,841,845 Held-to-Maturity Debt Securities Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 691,404 $ — $ (154,186) $ 537,218 Totals $ 691,404 $ — $ (154,186) $ 537,218 December 31, 2022 (In thousands) Amortized Gross Unrealized Gross Unrealized Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 13,813 $ 173 $ (339) $ 13,647 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,561,197 539 (223,083) 1,338,653 Private mortgage-backed securities and collateralized mortgage obligations 179,148 70 (12,831) 166,387 Collateralized loan obligations 313,155 — (10,251) 302,904 Obligations of state and political subdivisions 29,350 122 (1,731) 27,741 Other debt securities 22,640 197 (427) 22,410 Totals $ 2,119,303 $ 1,101 $ (248,662) $ 1,871,742 Held-to-Maturity Debt Securities Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 747,408 $ 64 $ (129,731) $ 617,741 Totals $ 747,408 $ 64 $ (129,731) $ 617,741
Summary of Investments Classified by Contractual Maturity	Securities not due at a single maturity date are shown separately. September 30, 2023 Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair Due in less than one year $ — $ — $ 6,157 $ 6,083 Due after one year through five years — — 11,621 11,365 Due after five years through ten years — — 11,075 10,938 Due after ten years — — 32,303 29,702 — — 61,156 58,088 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 691,404 537,218 1,593,306 1,326,639 Private mortgage-backed securities and collateralized mortgage obligations — — 139,089 125,187 Collateralized loan obligations — — 307,664 304,168 Other debt securities — — 27,293 27,763 Totals $ 691,404 $ 537,218 $ 2,128,508 $ 1,841,845
Schedule of Debt Securities in Unrealized Loss Position	The tables below indicate the fair value of available-for-sale debt securities with unrealized losses for which no allowance for credit losses has been recorded. September 30, 2023 Less Than 12 Months 12 Months or Longer Total (In thousands) Fair Unrealized Fair Unrealized Fair Unrealized U.S. Treasury securities and obligations of U.S. government agencies $ 33,881 $ (467) $ 3,569 $ (487) $ 37,450 $ (954) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 174,339 (18,084) 1,142,859 (248,641) 1,317,198 (266,725) Private mortgage-backed securities and collateralized mortgage obligations 4,814 (84) 119,348 (13,843) 124,162 (13,927) Collateralized loan obligations 59,580 (730) 244,588 (2,766) 304,168 (3,496) Obligations of state and political subdivisions 8,394 (296) 11,258 (1,820) 19,652 (2,116) Other debt securities 10,765 (126) — — 10,765 (126) Totals $ 291,773 $ (19,787) $ 1,521,622 $ (267,557) $ 1,813,395 $ (287,344) December 31, 2022 Less Than 12 Months 12 Months or Longer Total (In thousands) Fair Unrealized Fair Unrealized Fair Unrealized U.S. Treasury securities and obligations of U.S. government agencies $ 3,788 $ (328) $ 249 $ (11) $ 4,037 $ (339) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 646,651 (54,956) 667,520 (168,127) 1,314,171 (223,083) Private mortgage-backed securities and collateralized mortgage obligations 130,488 (8,255) 25,234 (4,576) 155,722 (12,831) Collateralized loan obligations 242,370 (8,343) 60,534 (1,908) 302,904 (10,251) Obligations of state and political subdivisions 23,804 (1,656) 425 (75) 24,229 (1,731) Other debt securities 11,459 (427) — — 11,459 (427) Totals $ 1,058,560 $ (73,965) $ 753,962 $ (174,697) $ 1,812,522 $ (248,662)

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans	The following tables present net loan balances by segment as of: September 30, 2023 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 474,788 $ 308,429 $ 10,519 $ 793,736 Commercial real estate - owner occupied 1,056,521 580,725 38,635 1,675,881 Commercial real estate - non-owner occupied 1,774,919 1,357,624 153,431 3,285,974 Residential real estate 1,693,169 703,628 22,106 2,418,903 Commercial and financial 1,187,340 340,412 56,298 1,584,050 Consumer 155,576 92,122 842 248,540 PPP Loans 809 3,293 — 4,102 Totals $ 6,343,122 $ 3,386,233 $ 281,831 $ 10,011,186 December 31, 2022 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 364,900 $ 201,333 $ 21,100 $ 587,332 Commercial real estate - owner occupied 995,154 451,202 31,946 1,478,302 Commercial real estate - non-owner occupied 1,695,411 767,138 127,225 2,589,774 Residential real estate 1,558,643 271,378 19,482 1,849,503 Commercial and financial 1,151,273 182,124 15,238 1,348,636 Consumer 177,338 89,458 19,791 286,587 PPP Loans 1,474 3,116 — 4,590 Totals $ 5,944,193 $ 1,965,749 $ 234,782 $ 8,144,724
Schedule of Past Due Financing Receivables	The following tables present the status of net loan balances as of September 30, 2023 and December 31, 2022. September 30, 2023 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 474,783 $ — $ — $ — $ 5 $ 474,788 Commercial real estate - owner occupied 1,055,457 66 — — 998 1,056,521 Commercial real estate - non-owner occupied $ 1,771,201 $ 207 $ — $ — $ 3,511 $ 1,774,919 Residential real estate 1,675,299 10,279 738 — 6,853 1,693,169 Commercial and financial 1,178,839 1,168 141 31 7,161 1,187,340 Consumer 154,452 707 21 234 162 155,576 PPP Loans 809 — — — — 809 Total Portfolio Loans $ 6,310,840 $ 12,427 $ 900 $ 265 $ 18,690 $ 6,343,122 Acquired Non-PCD Loans Construction and land development $ 305,822 $ 1,462 $ 994 $ — $ 151 $ 308,429 Commercial real estate - owner occupied 578,177 74 — — 2,474 580,725 Commercial real estate - non-owner occupied 1,354,889 406 — — 2,329 1,357,624 Residential real estate 697,683 3,293 535 — 2,117 703,628 Commercial and financial 337,215 887 29 15 2,266 340,412 Consumer 78,887 6,274 3,361 2,415 1,185 92,122 PPP Loans 3,293 — — — — 3,293 Total Acquired Non-PCD Loans $ 3,355,966 $ 12,396 $ 4,919 $ 2,430 $ 10,522 $ 3,386,233 PCD Loans Construction and land development $ 10,519 $ — $ — $ — $ — $ 10,519 Commercial real estate - owner occupied 34,145 — — — 4,490 38,635 Commercial real estate - non-owner occupied 149,621 — — — 3,810 153,431 Residential real estate 18,864 573 1,571 — 1,098 22,106 Commercial and financial 53,403 — — — 2,895 56,298 Consumer 782 54 3 — 3 842 Total PCD Loans $ 267,334 $ 627 $ 1,574 $ — $ 12,296 $ 281,831 Total Loans $ 9,934,140 $ 25,450 $ 7,393 $ 2,695 $ 41,508 $ 10,011,186 December 31, 2022 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 364,841 $ — $ — $ — $ 59 $ 364,900 Commercial real estate - owner occupied 993,690 — 67 440 957 995,154 Commercial real estate - non-owner occupied 1,695,381 — — — 30 1,695,411 Residential real estate 1,550,040 1,172 147 — 7,284 1,558,643 Commercial and financial 1,142,536 1,032 476 — 7,229 1,151,273 Consumer 176,444 550 252 1 91 177,338 PPP Loans 1,099 33 — 342 — 1,474 Total Portfolio Loans $ 5,924,031 $ 2,787 $ 942 $ 783 $ 15,650 $ 5,944,193 Acquired Non-PCD Loans Construction and land development $ 201,263 $ — $ — $ — $ 70 $ 201,333 Commercial real estate - owner occupied 450,109 796 297 — — 451,202 Commercial real estate - non-owner occupied 765,633 162 — — 1,343 767,138 Residential real estate 270,215 577 — — 586 271,378 Commercial and financial 180,837 790 87 — 410 182,124 Consumer 87,317 779 616 525 221 89,458 PPP Loans 3,116 — — — — 3,116 Total Acquired Non-PCD Loans $ 1,958,490 $ 3,104 $ 1,000 $ 525 $ 2,630 $ 1,965,749 PCD Loans Construction and land development $ 20,680 $ — $ — $ — $ 420 $ 21,100 Commercial real estate - owner occupied 30,517 23 23 — 1,383 31,946 Commercial real estate - non-owner occupied 124,115 — — — 3,110 127,225 Residential real estate 17,885 10 — — 1,587 19,482 Commercial and financial 11,201 4 — — 4,033 15,238 Consumer 17,884 1,001 336 540 30 19,791 Total PCD Loans $ 222,282 $ 1,038 $ 359 $ 540 $ 10,563 $ 234,782 Total Loans $ 8,104,803 $ 6,929 $ 2,301 $ 1,848 $ 28,843 $ 8,144,724
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, 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 $ — $ 156 $ 156 $ 71 Commercial real estate - owner occupied 1,908 6,054 7,962 320 Commercial real estate - non-owner occupied 6,868 2,782 9,650 728 Residential real estate 1,810 8,258 10,068 179 Commercial and financial 3,347 8,975 12,322 4,610 Consumer — 1,350 1,350 195 Totals $ 13,933 $ 27,575 $ 41,508 $ 6,103 December 31, 2022 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ 615 $ — $ 615 $ — Commercial real estate - owner occupied 957 1,641 2,597 41 Commercial real estate - non-owner occupied 3,347 837 4,184 230 Residential real estate 8,072 1,036 9,109 58 Commercial and financial 4,724 6,891 11,615 2,319 Consumer 40 683 723 257 Totals $ 17,755 $ 11,088 $ 28,843 $ 2,905
Schedule of Collateral Dependent Loans	The following table presents collateral-dependent loans as of: (In thousands) September 30, 2023 December 31, 2022 Construction and land development $ — $ 59 Commercial real estate - owner occupied — 2,733 Commercial real estate - non-owner occupied 8,519 1,698 Residential real estate 818 11,333 Commercial and financial 2,147 10,448 Consumer — 426 Totals $ 11,484 $ 26,697
Schedule of Risk Categories of Loans by Class of Loans	The following tables present the risk rating of loans and year-to-date gross charge offs by year of origination as of: September 30, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 58,254 $ 290,673 $ 134,906 $ 28,682 $ 23,102 $ 29,307 $ 216,059 $ 780,983 Special Mention — 1,214 794 — — 394 200 2,602 Substandard — — 9,975 — — — — 9,975 Substandard Impaired — — — — — 57 119 176 Doubtful — — — — — — — — Total $ 58,254 $ 291,887 $ 145,675 $ 28,682 $ 23,102 $ 29,758 $ 216,378 $ 793,736 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate - owner occupied Risk Ratings: Pass $ 99,731 $ 259,947 $ 300,315 $ 169,143 $ 186,034 $ 569,304 $ 49,385 $ 1,633,859 Special Mention — — 350 — 871 9,252 — 10,473 Substandard — 2,775 — 6,377 6,868 7,501 66 23,587 Substandard Impaired — 848 36 664 295 6,119 — 7,962 Doubtful — — — — — — — — Total $ 99,731 $ 263,570 $ 300,701 $ 176,184 $ 194,068 $ 592,176 $ 49,451 $ 1,675,881 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate - non-owner occupied Risk Ratings: Pass $ 151,486 $ 842,420 $ 653,228 $ 291,699 $ 396,142 $ 865,181 $ 37,285 $ 3,237,441 Special Mention — — 2,108 — — 13,992 — 16,100 Substandard — — 189 8,383 8,456 5,754 242 23,024 Substandard Impaired — — — 1,066 1,849 6,494 — 9,409 Doubtful — — — — — — — — Total $ 151,486 $ 842,420 $ 655,525 $ 301,148 $ 406,447 $ 891,421 $ 37,527 $ 3,285,974 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ 109 $ 109 Residential real estate Risk Ratings: Pass $ 149,010 $ 439,061 $ 646,121 $ 164,118 $ 98,896 $ 424,737 $ 475,311 $ 2,397,254 Special Mention 3 33 70 — 1,267 769 5,467 7,609 Substandard — — — — — — 768 768 September 30, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Total Substandard Impaired — — 861 126 315 9,516 2,454 13,272 Doubtful — — — — — — — — Total $ 149,013 $ 439,094 $ 647,052 $ 164,244 $ 100,478 $ 435,022 $ 484,000 $ 2,418,903 Gross Charge Offs $ — $ — $ — $ — $ — $ 159 $ 153 $ 312 Commercial and financial Risk Ratings: Pass $ 232,472 $ 377,084 $ 354,060 $ 139,626 $ 70,860 $ 94,921 $ 246,568 $ 1,515,591 Special Mention 129 3,545 1,086 1,002 461 3,583 2,842 12,648 Substandard — 7,860 20,895 4,942 5,558 2,448 1,786 43,489 Substandard Impaired 139 — 2,481 338 776 7,327 1,261 12,322 Doubtful — — — — — — — — Total $ 232,740 $ 388,489 $ 378,522 $ 145,908 $ 77,655 $ 108,279 $ 252,457 $ 1,584,050 Gross Charge Offs $ 206 $ 117 $ 109 $ 1,484 $ 265 $ 12,584 $ 418 $ 15,183 Consumer Risk Ratings: Pass $ 28,535 $ 59,686 $ 48,611 $ 20,742 $ 21,552 $ 20,634 $ 40,713 $ 240,473 Special Mention — 1,935 1,170 79 25 6 751 3,966 Substandard — — — — — — — — Substandard Impaired — 1,840 1,594 178 65 329 95 4,101 Doubtful — — — — — — — — Total $ 28,535 $ 63,461 $ 51,375 $ 20,999 $ 21,642 $ 20,969 $ 41,559 $ 248,540 Gross Charge Offs $ 9 $ 927 $ 2,146 $ 291 $ 138 $ 214 $ 139 $ 3,864 Paycheck Protection Program Risk Ratings: Pass $ — $ — $ 1,957 $ 2,145 $ — $ — $ — $ 4,102 Substandard — — — — — — — — Substandard Impaired — — — — — — — — Total $ — $ — $ 1,957 $ 2,145 $ — $ — $ — $ 4,102 Gross Charge Offs $ — $ — $ — $ — $ — $ — $ — $ — Consolidated Risk Ratings: Pass $ 719,488 $ 2,268,871 $ 2,139,198 $ 816,155 $ 796,586 $ 2,004,084 $ 1,065,321 $ 9,809,703 Special Mention 132 6,727 5,578 1,081 2,624 27,996 9,260 53,398 Substandard — 10,635 31,059 19,702 20,882 15,703 2,862 100,843 Substandard Impaired 139 2,688 4,972 2,372 3,300 29,842 3,929 47,242 Doubtful — — — — — — — — Total $ 719,759 $ 2,288,921 $ 2,180,807 $ 839,310 $ 823,392 $ 2,077,625 $ 1,081,372 $ 10,011,186 Gross Charge Offs $ 215 $ 1,044 $ 2,255 $ 1,775 $ 403 $ 12,957 $ 819 $ 19,468 December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 223,204 $ 209,738 $ 18,239 $ 24,600 $ 12,783 $ 19,022 $ 50,960 $ 558,546 Special Mention 14,523 452 — 3,153 — — 15 18,143 Substandard — 9,227 — — 959 — — 10,186 Substandard Impaired — 52 — — — 405 — 457 Doubtful — — — — — — — — Total $ 237,727 $ 219,469 $ 18,239 $ 27,753 $ 13,742 $ 19,427 $ 50,975 $ 587,332 Commercial real estate - owner occupied Risk Ratings: Pass $ 215,453 $ 251,638 $ 180,081 $ 185,286 $ 121,568 $ 467,963 $ 32,253 $ 1,454,242 Special Mention 694 — 2,363 4,403 2,548 2,869 — 12,877 Substandard — — 667 2,625 573 4,444 — 8,309 Substandard Impaired — — — 311 294 2,269 — 2,874 Doubtful — — — — — — — — Total $ 216,147 $ 251,638 $ 183,111 $ 192,625 $ 124,983 $ 477,545 $ 32,253 $ 1,478,302 Commercial real estate - non-owner occupied Risk Ratings: Pass $ 593,364 $ 530,462 $ 231,693 $ 331,173 $ 228,077 $ 575,656 $ 35,326 $ 2,525,751 Special Mention — 16,257 735 5,438 — 4,975 — 27,405 Substandard — 192 19,315 — 5,515 7,412 — 32,434 Substandard Impaired — — 1,044 1,849 30 1,261 — 4,184 Doubtful — — — — — — — — Total $ 593,364 $ 546,911 $ 252,787 $ 338,460 $ 233,622 $ 589,304 $ 35,326 $ 2,589,774 Residential real estate Risk Ratings: Pass $ 270,054 $ 552,950 $ 121,879 $ 77,100 $ 97,900 $ 292,867 $ 423,764 $ 1,836,514 Special Mention — — 50 — 25 269 884 1,228 Substandard — — — — — 343 85 428 Substandard Impaired — — 133 32 83 9,515 1,570 11,333 Doubtful — — — — — — — — Total $ 270,054 $ 552,950 $ 122,062 $ 77,132 $ 98,008 $ 302,994 $ 426,303 $ 1,849,503 Commercial and financial Risk Ratings: Pass $ 359,833 $ 320,307 $ 140,450 $ 77,562 $ 57,924 $ 58,648 $ 292,818 $ 1,307,542 Special Mention 1,244 423 106 474 195 259 2,998 5,699 Substandard — 67 942 6,304 1,603 1,683 13,114 23,713 Substandard Impaired 5 58 5,109 147 3,642 2,545 176 11,682 Doubtful — — — — — — — — Total $ 361,082 $ 320,855 $ 146,607 $ 84,487 $ 63,364 $ 63,135 $ 309,106 $ 1,348,636 Consumer Risk Ratings: Pass $ 93,012 $ 77,889 $ 27,982 $ 28,772 $ 11,690 $ 16,480 $ 29,725 $ 285,550 Special Mention — — — 250 2 134 30 416 Substandard — — 11 — — 191 — 202 Substandard Impaired — — 18 55 36 103 207 419 Doubtful — — — — — — — — Total $ 93,012 $ 77,889 $ 28,011 $ 29,077 $ 11,728 $ 16,908 $ 29,962 $ 286,587 Paycheck Protection Program Risk Ratings: Pass $ — $ 2,708 $ 1,882 $ — $ — $ — $ — $ 4,590 December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Total Substandard $ — $ — $ — $ — $ — $ — $ — $ — Substandard Impaired $ — $ — $ — $ — $ — $ — $ — $ — Total $ — $ 2,708 $ 1,882 $ — $ — $ — $ — $ 4,590 Consolidated Risk Ratings: Pass $ 1,754,920 $ 1,945,692 $ 722,206 $ 724,493 $ 529,942 $ 1,430,636 $ 864,846 $ 7,972,735 Special Mention 16,461 17,132 3,254 13,718 2,770 8,506 3,927 65,768 Substandard — 9,486 20,935 8,929 8,650 14,073 13,199 75,272 Substandard Impaired 5 110 6,304 2,394 4,085 16,098 1,953 30,949 Doubtful — — — — — — — — Total $ 1,771,386 $ 1,972,420 $ 752,699 $ 749,534 $ 545,447 $ 1,469,313 $ 883,925 $ 8,144,724

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Schedule of Allowance for Credit Losses	Activity in the allowance for credit losses is summarized as follows: 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 Three Months Ended September 30, 2022 (In thousands) Beginning Provision Charge- Recoveries TDR Ending Construction and land development 2,552 792 — 1 — 3,345 Commercial real estate - owner occupied 7,376 (2,182) — — — 5,194 Commercial real estate - non-owner occupied 46,459 (6,841) (179) 23 — 39,462 Residential real estate 14,821 11,193 — 31 (8) 26,037 Commercial and financial 17,144 (1,457) (77) 92 (1) 15,701 Consumer 2,417 3,171 (152) 158 (4) 5,590 Totals $ 90,769 $ 4,676 $ (408) $ 305 $ (13) $ 95,329 Nine Months Ended September 30, 2023 (In thousands) Beginning Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries Ending 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 Nine Months Ended September 30, 2022 (In thousands) Beginning Balance Allowance on PCD Loans Acquired During the Period Provision for Credit Losses Charge- Offs Recoveries TDR Allowance Adjustments Ending Balance Construction and land development $ 2,751 $ — $ 529 $ — $ 65 $ — $ 3,345 Commercial real estate - owner occupied 8,579 — (3,385) — — — 5,194 Commercial real estate - non-owner occupied 36,617 31 2,961 (179) 32 — 39,462 Residential real estate 12,811 17 12,901 (1) 334 (25) 26,037 Commercial and financial 19,744 3 (3,585) (899) 440 (2) 15,701 Consumer 2,813 — 2,633 (446) 596 (6) 5,590 Totals $ 83,315 $ 51 $ 12,054 $ (1,525) $ 1,467 $ (33) $ 95,329
Schedule of Loan Portfolio, Excluding PCI Loans and Related Allowance	The Company’s loan portfolio and related allowance at September 30, 2023 and December 31, 2022 are shown in the following tables: September 30, 2023 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ — $ — $ 793,736 $ 7,685 $ 793,736 $ 7,685 Commercial real estate - owner occupied 1,908 — 1,673,973 6,065 1,675,881 6,065 Commercial real estate - non-owner occupied 8,519 530 3,277,455 51,911 3,285,974 52,441 Residential real estate 1,810 — 2,417,093 38,735 2,418,903 38,735 Commercial and financial 23,287 8,062 1,564,865 23,463 1,588,152 31,525 Consumer — — 248,540 13,210 248,540 13,210 Totals $ 35,524 $ 8,592 $ 9,975,662 $ 141,069 $ 10,011,186 $ 149,661 December 31, 2022 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ 59 $ — $ 587,273 $ 6,464 $ 587,332 $ 6,464 Commercial real estate - owner occupied 3,346 41 1,474,956 6,010 1,478,302 6,051 Commercial real estate - non-owner occupied 4,183 230 2,585,591 43,028 2,589,774 43,258 Residential real estate 11,333 275 1,838,170 29,330 1,849,503 29,605 Commercial and financial 12,167 2,639 1,341,059 13,009 1,353,226 15,648 Consumer 426 362 286,161 12,507 286,587 12,869 Totals $ 31,514 $ 3,547 $ 8,113,210 $ 110,348 $ 8,144,724 $ 113,895

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	(In thousands) Notional Amount Fair Value Balance Sheet Category At September 30, 2023 Back-to-back swaps $ 505,742 $ 37,362 Other Assets and Other Liabilities Interest rate floors 300,000 — Other Assets Fair value hedges 400,000 6,914 Other Assets At December 31, 2022 Back-to-back swaps $ 312,808 $ 23,140 Other Assets and Other Liabilities Interest rate floors 300,000 2 Other Assets 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, 2023 December 31, 2022 September 30, 2023 December 31, 2022 Available-for-sale securities 1 $ 574,823 $ — $ 7,014 $ — 1 At September 30, 2023, and December 31, 2022, the amortized cost basis and unallocated basis adjustments used in hedging relationships was $696.2 million and $0, respectively. Refer to Note 3 for a reconciliation of the amortized cost and fair value of available-for-sale securities.

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023 December 31, 2022 Fair value of pledged securities - overnight and continuous: Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 358,448 $ 184,967

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023 and December 31, 2022 included: (In thousands) Fair Value Quoted Prices Significant Significant At September 30, 2023 Financial Assets Available-for-sale debt securities 1 $ 1,841,845 $ 188 $ 1,841,657 $ — Derivative financial instruments 2 44,276 — 44,276 — Loans held for sale 2 2,979 — 2,979 — Loans, net 3 10,482 — 818 9,664 Other real estate owned 4 7,216 — 7,216 — Equity securities 5 13,120 13,120 — — Financial Liabilities Derivative financial instruments 2 $ 37,362 $ — $ 37,362 $ — At December 31, 2022 Financial Assets Available-for-sale debt securities 1 $ 1,871,742 $ 186 $ 1,871,556 $ — Derivative financial instruments 2 23,142 — 23,142 — Loans held for sale 2 3,151 — 3,151 — Loans 3 8,513 — 1,183 7,330 Other real estate owned 4 2,301 — 2,301 — Equity securities 5 8,220 8,220 — — Financial Liabilities Derivative financial instruments 2 $ 23,142 $ — $ 23,142 $ — 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 See “Note 4 – Loans.” Nonrecurring fair value adjustments to collateral-dependent loans reflect full or partial write-downs that are based on current appraised values of the collateral in accordance with ASC Topic 310. 4 Fair value is measured on a nonrecurring basis in accordance with ASC Topic 360. 5 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 Aggregate Fair Value and Contractual Balance of Loans for Sale	The aggregate fair value and contractual balance of loans held for sale as of September 30, 2023 and December 31, 2022 is as follows: (In thousands) September 30, 2023 December 31, 2022 Aggregate fair value $ 2,979 $ 3,151 Contractual balance 2,846 3,071 Excess 133 80
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, 2023 and December 31, 2022 is as follows: (In thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2023 Financial Assets Debt securities held-to-maturity 1 $ 691,404 $ — $ 537,218 $ — Time deposits with other banks 4,357 — 4,241 — Loans, net 9,851,043 — — 9,591,237 Financial Liabilities Deposit liabilities 12,107,834 — — 12,106,525 Federal Home Loan Bank (“FHLB”) borrowings 110,000 — — 110,293 Subordinated debt, net 106,136 — 98,110 — December 31, 2022 Debt securities held-to-maturity 1 $ 747,408 $ — $ 617,741 $ — Time deposits with other banks 3,236 — 2,989 — Loans, net 8,022,316 — — 7,845,375 Financial Liabilities Deposit liabilities 9,981,595 — — 9,976,125 Federal Home Loan Bank (“FHLB”) borrowings 150,000 — — 149,450 Subordinated debt 84,533 — 82,226 — 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, 2023
Business Combination and Asset Acquisition [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 (In thousands, except per share data) October 7, 2022 Number of Apollo common shares outstanding 3,766 Per share exchange ratio 1.0065 Number of shares of SBCF common stock issued 3,791 Number of Apollo Bank minority interest shares outstanding 609 Per share exchange ratio 1.1957 Number of shares of SBCF common stock issued 728 Total number of shares of SBCF common stock issued 4,519 Multiplied by common stock price per share at October 7, 2022 $ 30.83 Value of SBCF common stock issued $ 139,307 Cash paid for fractional shares 5 Fair value of Apollo options and warrants converted 6,530 Total purchase price $ 145,842 (In thousands, except per share data) October 7, 2022 Number of Drummond common shares outstanding 99 Per share exchange ratio 51.9561 Number of shares of SBCF common stock issued 5,136 Multiplied by common stock price per share at October 7, 2022 $ 30.83 Total purchase price $ 158,332 (In thousands, except per share data) January 3, 2022 Number of BBFC common shares outstanding 1,112 Per share exchange ratio 0.7997 Number of shares of SBCF common stock issued 889 Multiplied by common stock price per share on January 3, 2022 $ 35.39 Value of SBCF common stock issued $ 31,480 Fair value of BBFC options converted 497 Total purchase price $ 31,977 (In thousands, except per share data) January 3, 2022 Number of Sabal Palm common shares outstanding 7,536 Per share exchange ratio 0.2203 Number of shares of SBCF common stock issued 1,660 Multiplied by common stock price per share on January 3, 2022 $ 35.39 Value of SBCF common stock issued $ 58,762 Fair value of Sabal Palm options converted 3,336 Total purchase price $ 62,098
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 3,135 251,226 BOLI 55,071 — 55,071 Other Assets 74,232 2,409 76,641 Total Assets $ 2,729,209 $ — $ 2,729,209 Liabilities: Deposits $ 2,119,341 $ — $ 2,119,341 Subordinated debt 21,141 — 21,141 Other Liabilities 167,680 — 167,680 Total Liabilities $ 2,308,162 $ — $ 2,308,162 Initially Measured Measurement As Adjusted (In thousands) October 7, 2022 Period Adjustments October 7, 2022 Assets: Cash and cash equivalents $ 41,001 $ — $ 41,001 Investment securities 203,596 — 203,596 Loans 666,522 — 666,522 Bank premises and equipment 7,809 — 7,809 Core deposit intangibles 28,699 — 28,699 Goodwill 90,237 251 90,488 Other Assets 52,724 (251) 52,473 Total Assets $ 1,090,588 $ — $ 1,090,588 Liabilities: Deposits $ 854,774 $ — $ 854,774 Other Liabilities 89,972 — 89,972 Total Liabilities $ 944,746 $ — $ 944,746 Initially Measured Measurement As Adjusted (In thousands) October 7, 2022 Period Adjustments October 7, 2022 Assets: Cash and cash equivalents $ 31,805 $ — $ 31,805 Investment securities 327,852 — 327,852 Loans 544,694 — 544,694 Bank premises and equipment 29,370 — 29,370 Core deposit and other intangibles 32,983 — 32,983 Goodwill 103,476 173 103,649 Other Assets 49,812 (173) 49,639 Total Assets $ 1,119,992 $ — $ 1,119,992 Liabilities: Deposits $ 881,281 $ — $ 881,281 Other Liabilities 80,379 — 80,379 Total Liabilities $ 961,660 $ — $ 961,660 (In thousands) Measured Assets: Cash $ 38,332 Investment securities 26,011 Loans 121,774 Bank premises and equipment 2,102 Core deposit intangibles 2,621 Goodwill 7,962 Total assets $ 198,802 Liabilities: Deposits 166,326 Other liabilities 499 Total liabilities $ 166,825 (In thousands) Measured Assets: Cash $ 170,609 Time deposits with other banks 6,473 Loans 246,152 Bank premises and equipment 1,745 Core deposit intangibles 5,587 Goodwill 26,489 Other assets 5,189 Total assets $ 462,244 Liabilities: Deposits 395,952 Other liabilities 4,194 Total liabilities $ 400,146
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 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. October 7, 2022 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 74,126 $ 70,654 Commercial real estate - owner occupied 131,093 121,600 Commercial real estate - non-owner occupied 374,673 340,561 Residential real estate 76,254 75,957 Commercial and financial 50,125 46,695 Consumer 11,307 11,055 Total acquired loans $ 717,578 $ 666,522 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. October 7, 2022 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 155,041 $ 140,401 Commercial real estate - owner occupied 112,768 106,152 Commercial real estate - non-owner occupied 26,520 24,744 Residential real estate 85,767 78,663 Commercial and financial 88,026 82,067 Consumer 118,880 112,667 Total acquired loans $ 587,002 $ 544,694 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. January 3, 2022 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 8,677 $ 8,414 Commercial real estate - owner occupied 45,403 44,564 Commercial real estate - non-owner occupied 53,065 52,034 Residential real estate 5,377 5,421 Commercial and financial 11,335 11,280 Consumer 59 61 Total acquired loans $ 123,916 $ 121,774 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. January 3, 2022 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 9,256 $ 9,009 Commercial real estate - owner occupied 57,690 56,591 Commercial real estate - non-owner occupied 89,153 87,280 Residential real estate 71,469 72,227 Commercial and financial 21,109 20,813 Consumer 233 232 Total acquired loans $ 248,910 $ 246,152
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 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) October 7, 2022 Book balance of loans at acquisition $ 107,744 Allowance for credit losses at acquisition (2,658) Non-credit related discount (14,191) Total PCD loans acquired $ 90,895 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) October 7, 2022 Book balance of loans at acquisition $ 58,878 Allowance for credit losses at acquisition (2,566) Non-credit related discount (4,607) Total PCD loans acquired $ 51,705 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) (In thousands) Book balance of loans at acquisition $ 714 Allowance for credit losses at acquisition (15) Non-credit related discount (48) Total PCD loans acquired $ 651 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 3, 2022 Book balance of loans at acquisition $ 3,703 Allowance for credit losses at acquisition (37) Non-credit related discount (663) Total PCD loans acquired $ 3,003
Schedule of Pro-Forma Data	Pro-forma data as of September 30, 2023 and 2022 present information as if the acquisition of Professional occurred at the beginning of 2022. The pro-forma information is presented for illustrative purposes only and is not necessarily indicative of the results of operations that would have occurred if the transactions had been effected on the assumed dates. Three Months Ended Nine Months Ended September 30, September 30, (In thousands, except per share data) 2023 2022 2023 2022 Net interest income $ 119,306 $ 121,341 $ 388,189 $ 339,213 Net income available to common shareholders 31,414 46,076 99,905 89,728 EPS - basic 0.37 0.62 1.18 1.21 EPS - diluted 0.37 0.62 1.17 1.20

Earnings per Share - Narrative

Earnings per Share - Narrative (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Antidilutive securities excluded from diluted earnings per share calculation (in shares)	368,968	1,505,000	368,968	1,505,000

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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic earnings per share
Net income	$ 31,414	$ 29,237	$ 74,490	$ 82,580
Average common shares outstanding (in shares)	85,142	61,442	83,457	61,327
Net income per share (in dollars per share)	$ 0.37	$ 0.48	$ 0.89	$ 1.35
Diluted earnings per share
Average common shares outstanding (in shares)	85,142	61,442	83,457	61,327
Add: Dilutive effect of employee restricted stock and stock options (in shares)	524	519	536	540
Average diluted shares outstanding (in shares)	85,666	61,961	83,993	61,867
Net income per share (in dollars per share)	$ 0.37	$ 0.47	$ 0.89	$ 1.33

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, 2023	Dec. 31, 2022
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	$ 2,128,508	$ 2,119,303
Available for sale, gross unrealized gains	681	1,101
Available for sale, gross unrealized losses	(287,344)	(248,662)
Available for sale, fair value	1,841,845	1,871,742
Held-to-Maturity Debt Securities
Held to maturity, amortized cost, total	691,404	747,408
Held to maturity, gross unrealized gains	0	64
Held to maturity, gross unrealized losses	(154,186)	(129,731)
Held to maturity, fair value	537,218	617,741
U.S. Treasury securities and obligations of U.S. government agencies
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	39,388	13,813
Available for sale, gross unrealized gains	2	173
Available for sale, gross unrealized losses	(954)	(339)
Available for sale, fair value	38,436	13,647
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	1,593,306	1,561,197
Available for sale, gross unrealized gains	58	539
Available for sale, gross unrealized losses	(266,725)	(223,083)
Available for sale, fair value	1,326,639	1,338,653
Held-to-Maturity Debt Securities
Held to maturity, amortized cost, total		747,408
Held to maturity, gross unrealized gains		64
Held to maturity, gross unrealized losses		(129,731)
Held to maturity, fair value		617,741
Private mortgage-backed securities and collateralized mortgage obligations
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	139,089	179,148
Available for sale, gross unrealized gains	25	70
Available for sale, gross unrealized losses	(13,927)	(12,831)
Available for sale, fair value	125,187	166,387
Collateralized loan obligations
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	307,664	313,155
Available for sale, gross unrealized gains	0	0
Available for sale, gross unrealized losses	(3,496)	(10,251)
Available for sale, fair value	304,168	302,904
Obligations of state and political subdivisions
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	21,768	29,350
Available for sale, gross unrealized gains	0	122
Available for sale, gross unrealized losses	(2,116)	(1,731)
Available for sale, fair value	19,652	27,741
Other debt securities
Available-for-Sale Debt Securities
Available for sale, amortized cost, total	27,293	22,640
Available for sale, gross unrealized gains	596	197
Available for sale, gross unrealized losses	(126)	(427)
Available for sale, fair value	27,763	$ 22,410
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Held-to-Maturity Debt Securities
Held to maturity, amortized cost, total	691,404
Held to maturity, gross unrealized gains	0
Held to maturity, gross unrealized losses	(154,186)
Held to maturity, fair value	$ 537,218

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Gross gains from sale of securities		$ 24,000
Gross losses from sale of securities		19,000
Unrealized losses on mortgage backed securities of government sponsored entities	$ 287,344,000				$ 287,344,000		$ 248,662,000
Fair value of securities in unrealized loss position	1,813,395,000				1,813,395,000		1,812,522,000
Held-to-maturity securities, allowance for credit loss	0				0
Federal Home Loan Bank and Federal Reserve stock recorded in other assets	70,500,000				70,500,000
Accrued interest receivable on AFS debt securities	8,100,000				8,100,000		7,000,000
Accrued interest receivable on HTM debt securities	$ 1,100,000				$ 1,100,000		$ 1,300,000
Common stock, shares outstanding (in shares)	85,149,880				85,149,880		71,617,852
Visa | Common Class B
Debt Securities, Available-for-sale [Line Items]
Common stock, shares outstanding (in shares)	11,330				11,330
Visa | Common Class A
Debt Securities, Available-for-sale [Line Items]
Conversion rate of Class A stock for each share of Class B stock (in dollars per share)	$ 1.5875				$ 1.5875
Shares issued (in shares)					17,986
Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Fair value of debt securities pledged as collateral	$ 1,800,000,000				$ 1,800,000,000
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
Unrealized losses on mortgage backed securities of government sponsored entities	126,000				126,000		$ 427,000
Fair value of securities in unrealized loss position	10,765,000				10,765,000		11,459,000
CRA - Qualified Mutual Fund
Debt Securities, Available-for-sale [Line Items]
Gross losses from sale of securities	400,000		$ 400,000		500,000	$ 1,100,000
Investment in mutual fund carried at fair value	13,100,000				13,100,000		8,200,000
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	266,725,000				266,725,000		223,083,000
Fair value of securities in unrealized loss position	1,317,198,000				1,317,198,000		1,314,171,000
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	13,927,000				13,927,000		12,831,000
Fair value of securities in unrealized loss position	124,162,000				124,162,000		155,722,000
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	$ 3,496,000				$ 3,496,000		10,251,000
Fair value of securities in unrealized loss position	304,168,000				304,168,000		302,904,000
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	25%				25%
Obligations of state and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	$ 2,116,000				$ 2,116,000		1,731,000
Fair value of securities in unrealized loss position	19,652,000				19,652,000		$ 24,229,000
Allowance for credit losses on AFS debt securities	$ 0				$ 0
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
Business Bank of Florida
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale debt securities, including legacy securities				$ 26,000,000

Securities - Amortized Cost a_2

Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
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	691,404	$ 747,408
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	537,218	617,741
Amortized Cost
Due in less than one year	6,157
Due after one year through five years	11,621
Due after five years through ten years	11,075
Due after ten years	32,303
Available for sale loans with maturity date, amortized cost, total	61,156
Available for sale, amortized cost, total	2,128,508	2,119,303
Fair Value
Due in less than one year	6,083
Due after one year through five years	11,365
Due after five years through ten years	10,938
Due after ten years	29,702
Available for sale loans with maturity date, fair value, total	58,088
Available for sale, fair value, total	1,841,845	1,871,742
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	691,404
Held to maturity, amortized cost, total		747,408
Fair Value
Loans without single maturity date	537,218
Held to maturity, fair value, total		617,741
Amortized Cost
Loans without single maturity date	1,593,306
Available for sale, amortized cost, total	1,593,306	1,561,197
Fair Value
Loans without single maturity date	1,326,639
Available for sale, fair value, total	1,326,639	1,338,653
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	139,089
Available for sale, amortized cost, total	139,089	179,148
Fair Value
Loans without single maturity date	125,187
Available for sale, fair value, total	125,187	166,387
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	307,664
Available for sale, amortized cost, total	307,664	313,155
Fair Value
Loans without single maturity date	304,168
Available for sale, fair value, total	304,168	302,904
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	27,293
Available for sale, amortized cost, total	27,293	22,640
Fair Value
Loans without single maturity date	27,763
Available for sale, fair value, total	$ 27,763	$ 22,410

Securities - Schedule of Unreal

Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value
Less Than 12 Months	$ 291,773	$ 1,058,560
12 Months or Longer	1,521,622	753,962
Total	1,813,395	1,812,522
Unrealized Losses
Less Than 12 Months	(19,787)	(73,965)
12 Months or Longer	(267,557)	(174,697)
Total	(287,344)	(248,662)
U.S. Treasury securities and obligations of U.S. government agencies
Fair Value
Less Than 12 Months	33,881	3,788
12 Months or Longer	3,569	249
Total	37,450	4,037
Unrealized Losses
Less Than 12 Months	(467)	(328)
12 Months or Longer	(487)	(11)
Total	(954)	(339)
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	174,339	646,651
12 Months or Longer	1,142,859	667,520
Total	1,317,198	1,314,171
Unrealized Losses
Less Than 12 Months	(18,084)	(54,956)
12 Months or Longer	(248,641)	(168,127)
Total	(266,725)	(223,083)
Private mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	4,814	130,488
12 Months or Longer	119,348	25,234
Total	124,162	155,722
Unrealized Losses
Less Than 12 Months	(84)	(8,255)
12 Months or Longer	(13,843)	(4,576)
Total	(13,927)	(12,831)
Collateralized loan obligations
Fair Value
Less Than 12 Months	59,580	242,370
12 Months or Longer	244,588	60,534
Total	304,168	302,904
Unrealized Losses
Less Than 12 Months	(730)	(8,343)
12 Months or Longer	(2,766)	(1,908)
Total	(3,496)	(10,251)
Obligations of state and political subdivisions
Fair Value
Less Than 12 Months	8,394	23,804
12 Months or Longer	11,258	425
Total	19,652	24,229
Unrealized Losses
Less Than 12 Months	(296)	(1,656)
12 Months or Longer	(1,820)	(75)
Total	(2,116)	(1,731)
Other debt securities
Fair Value
Less Than 12 Months	10,765	11,459
12 Months or Longer	0	0
Total	10,765	11,459
Unrealized Losses
Less Than 12 Months	(126)	(427)
12 Months or Longer	0	0
Total	$ (126)	$ (427)

Loans - Schedule of Portfolio L

Loans - Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 10,011,186	$ 8,144,724
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	793,736	587,332
Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,675,881	1,478,302
Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,285,974	2,589,774
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,418,903	1,849,503
Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,584,050	1,348,636
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	248,540	286,587
PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,102	4,590
Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,386,233	1,965,749
Acquired Non-PCD Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	308,429	201,333
Acquired Non-PCD Loans | Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	580,725	451,202
Acquired Non-PCD Loans | Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,357,624	767,138
Acquired Non-PCD Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	703,628	271,378
Acquired Non-PCD Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	340,412	182,124
Acquired Non-PCD Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	92,122	89,458
Acquired Non-PCD Loans | PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,293	3,116
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	281,831	234,782
PCD Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	10,519	21,100
PCD Loans | Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	38,635	31,946
PCD Loans | Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	153,431	127,225
PCD Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	22,106	19,482
PCD Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	56,298	15,238
PCD Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	842	19,791
PCD Loans | PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	6,343,122	5,944,193
Portfolio Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	474,788	364,900
Portfolio Loans | Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,056,521	995,154
Portfolio Loans | Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,774,919	1,695,411
Portfolio Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,693,169	1,558,643
Portfolio Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,187,340	1,151,273
Portfolio Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	155,576	177,338
Portfolio Loans | PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 809	$ 1,474

Loans - Narrative (Details)

Loans - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) contract	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Net deferred costs	$ 38.1		$ 38.1		$ 35.1
Accrued interest receivable	37.8		37.8		28.2
Interest income from securities with no related allowance	0.4	$ 0.2	$ 0.8	$ 1.4
Loans moved from individually evaluated to collectively evaluated	$ 19.9
Number of loans under trouble debt restructuring | contract			8
Modified in trouble borrower modifications			$ 2.2
Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Remaining fair value adjustment for loans acquired			$ 186.5		$ 97.7
Percentage of fair value adjustment for loans acquired	4.90%		4.90%		4.30%

Loans - Past Due Financing Rece

Loans - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Loans	$ 10,011,186	$ 8,144,724
Nonaccrual	41,508	28,843
Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,386,233	1,965,749
Nonaccrual	10,522	2,630
PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	281,831	234,782
Nonaccrual	12,296	10,563
Current
Financing Receivable, Past Due [Line Items]
Loans	9,934,140	8,104,803
Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,355,966	1,958,490
Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	267,334	222,282
Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	25,450	6,929
Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	12,396	3,104
Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	627	1,038
Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	7,393	2,301
Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	4,919	1,000
Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,574	359
Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	2,695	1,848
Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,430	525
Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	540
Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	793,736	587,332
Nonaccrual	156	615
Construction and land development | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	308,429	201,333
Nonaccrual	151	70
Construction and land development | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	10,519	21,100
Nonaccrual	0	420
Construction and land development | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	305,822	201,263
Construction and land development | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	10,519	20,680
Construction and land development | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,462	0
Construction and land development | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	994	0
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	1,675,881	1,478,302
Nonaccrual	7,962	2,597
Commercial real estate - owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	580,725	451,202
Nonaccrual	2,474	0
Commercial real estate - owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	38,635	31,946
Nonaccrual	4,490	1,383
Commercial real estate - owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	578,177	450,109
Commercial real estate - owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	34,145	30,517
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	74	796
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	23
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	297
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	23
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	3,285,974	2,589,774
Nonaccrual	9,650	4,184
Commercial real estate - non-owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,357,624	767,138
Nonaccrual	2,329	1,343
Commercial real estate - non-owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	153,431	127,225
Nonaccrual	3,810	3,110
Commercial real estate - non-owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,354,889	765,633
Commercial real estate - non-owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	149,621	124,115
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	406	162
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	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	0	0
Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	2,418,903	1,849,503
Nonaccrual	10,068	9,109
Residential real estate | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	703,628	271,378
Nonaccrual	2,117	586
Residential real estate | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	22,106	19,482
Nonaccrual	1,098	1,587
Residential real estate | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	697,683	270,215
Residential real estate | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	18,864	17,885
Residential real estate | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,293	577
Residential real estate | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	573	10
Residential real estate | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	535	0
Residential real estate | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,571	0
Residential real estate | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Residential real estate | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial and financial
Financing Receivable, Past Due [Line Items]
Loans	1,584,050	1,348,636
Nonaccrual	12,322	11,615
Commercial and financial | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	340,412	182,124
Nonaccrual	2,266	410
Commercial and financial | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	56,298	15,238
Nonaccrual	2,895	4,033
Commercial and financial | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	337,215	180,837
Commercial and financial | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	53,403	11,201
Commercial and financial | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	887	790
Commercial and financial | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	4
Commercial and financial | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	29	87
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	15	0
Commercial and financial | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer
Financing Receivable, Past Due [Line Items]
Loans	248,540	286,587
Nonaccrual	1,350	723
Consumer | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	92,122	89,458
Nonaccrual	1,185	221
Consumer | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	842	19,791
Nonaccrual	3	30
Consumer | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	78,887	87,317
Consumer | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	782	17,884
Consumer | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	6,274	779
Consumer | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	54	1,001
Consumer | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,361	616
Consumer | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3	336
Consumer | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	2,415	525
Consumer | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	540
PPP Loans
Financing Receivable, Past Due [Line Items]
Loans	4,102	4,590
PPP Loans | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,293	3,116
Nonaccrual	0	0
PPP Loans | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
PPP Loans | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,293	3,116
PPP Loans | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
PPP Loans | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
PPP Loans | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	6,343,122	5,944,193
Nonaccrual	18,690	15,650
Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	6,310,840	5,924,031
Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	12,427	2,787
Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	900	942
Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	265	783
Portfolio Loans | Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	474,788	364,900
Nonaccrual	5	59
Portfolio Loans | Construction and land development | Current
Financing Receivable, Past Due [Line Items]
Loans	474,783	364,841
Portfolio Loans | Construction and land development | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
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	1,056,521	995,154
Nonaccrual	998	957
Portfolio Loans | Commercial real estate - owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	1,055,457	993,690
Portfolio Loans | Commercial real estate - owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	66	0
Portfolio Loans | Commercial real estate - owner occupied | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	67
Portfolio Loans | Commercial real estate - owner occupied | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	440
Portfolio Loans | Commercial real estate - non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,774,919	1,695,411
Nonaccrual	3,511	30
Portfolio Loans | Commercial real estate - non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	1,771,201	1,695,381
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	207	0
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	1,693,169	1,558,643
Nonaccrual	6,853	7,284
Portfolio Loans | Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	1,675,299	1,550,040
Portfolio Loans | Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	10,279	1,172
Portfolio Loans | Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	738	147
Portfolio Loans | Residential real estate | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial and financial
Financing Receivable, Past Due [Line Items]
Loans	1,187,340	1,151,273
Nonaccrual	7,161	7,229
Portfolio Loans | Commercial and financial | Current
Financing Receivable, Past Due [Line Items]
Loans	1,178,839	1,142,536
Portfolio Loans | Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,168	1,032
Portfolio Loans | Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	141	476
Portfolio Loans | Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	31	0
Portfolio Loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans	155,576	177,338
Nonaccrual	162	91
Portfolio Loans | Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	154,452	176,444
Portfolio Loans | Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	707	550
Portfolio Loans | Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	21	252
Portfolio Loans | Consumer | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	234	1
Portfolio Loans | PPP Loans
Financing Receivable, Past Due [Line Items]
Loans	809	1,474
Nonaccrual	0	0
Portfolio Loans | PPP Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	809	1,099
Portfolio Loans | PPP Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	33
Portfolio Loans | PPP Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | PPP Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	$ 0	$ 342

Loans - Schedule of Nonaccrual

Loans - Schedule of Nonaccrual Loans by Loan Category (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	$ 13,933	$ 17,755
Nonaccrual Loans With an Allowance	27,575	11,088
Total Nonaccrual Loans	41,508	28,843
Allowance for Credit Losses	6,103	2,905
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	0	615
Nonaccrual Loans With an Allowance	156	0
Total Nonaccrual Loans	156	615
Allowance for Credit Losses	71	0
Commercial real estate - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	1,908	957
Nonaccrual Loans With an Allowance	6,054	1,641
Total Nonaccrual Loans	7,962	2,597
Allowance for Credit Losses	320	41
Commercial real estate - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	6,868	3,347
Nonaccrual Loans With an Allowance	2,782	837
Total Nonaccrual Loans	9,650	4,184
Allowance for Credit Losses	728	230
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	1,810	8,072
Nonaccrual Loans With an Allowance	8,258	1,036
Total Nonaccrual Loans	10,068	9,109
Allowance for Credit Losses	179	58
Commercial and financial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	3,347	4,724
Nonaccrual Loans With an Allowance	8,975	6,891
Total Nonaccrual Loans	12,322	11,615
Allowance for Credit Losses	4,610	2,319
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	0	40
Nonaccrual Loans With an Allowance	1,350	683
Total Nonaccrual Loans	1,350	723
Allowance for Credit Losses	$ 195	$ 257

Loans - Schedule of Collateral

Loans - Schedule of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	$ 11,484	$ 26,697
Construction and land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	0	59
Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	0	2,733
Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	8,519	1,698
Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	818	11,333
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	2,147	10,448
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	$ 0	$ 426

Loans - Risk Categories of Loan

Loans - Risk Categories of Loans by Class of Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 719,759		$ 719,759		$ 1,771,386
One year prior to current fiscal year	2,288,921		2,288,921		1,972,420
Two years prior to current fiscal year	2,180,807		2,180,807		752,699
Three years prior to current fiscal year	839,310		839,310		749,534
Four years prior to current fiscal year	823,392		823,392		545,447
Prior	2,077,625		2,077,625		1,469,313
Revolving	1,081,372		1,081,372		883,925
Total	10,011,186		10,011,186		8,144,724
Current fiscal year, Charge Offs			215
One year prior to current fiscal year, Charge Offs			1,044
Two years prior to current fiscal year, Charge Offs			2,255
Three years prior to current fiscal year, Charge Offs			1,775
Four years prior to current fiscal year, Charge Offs			403
Prior, Charge Offs			12,957
Revolving, Charge Offs			819
Total, Charge Offs	13,123	$ 408	19,468	$ 1,525
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	719,488		719,488		1,754,920
One year prior to current fiscal year	2,268,871		2,268,871		1,945,692
Two years prior to current fiscal year	2,139,198		2,139,198		722,206
Three years prior to current fiscal year	816,155		816,155		724,493
Four years prior to current fiscal year	796,586		796,586		529,942
Prior	2,004,084		2,004,084		1,430,636
Revolving	1,065,321		1,065,321		864,846
Total	9,809,703		9,809,703		7,972,735
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	132		132		16,461
One year prior to current fiscal year	6,727		6,727		17,132
Two years prior to current fiscal year	5,578		5,578		3,254
Three years prior to current fiscal year	1,081		1,081		13,718
Four years prior to current fiscal year	2,624		2,624		2,770
Prior	27,996		27,996		8,506
Revolving	9,260		9,260		3,927
Total	53,398		53,398		65,768
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	10,635		10,635		9,486
Two years prior to current fiscal year	31,059		31,059		20,935
Three years prior to current fiscal year	19,702		19,702		8,929
Four years prior to current fiscal year	20,882		20,882		8,650
Prior	15,703		15,703		14,073
Revolving	2,862		2,862		13,199
Total	100,843		100,843		75,272
Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	139		139		5
One year prior to current fiscal year	2,688		2,688		110
Two years prior to current fiscal year	4,972		4,972		6,304
Three years prior to current fiscal year	2,372		2,372		2,394
Four years prior to current fiscal year	3,300		3,300		4,085
Prior	29,842		29,842		16,098
Revolving	3,929		3,929		1,953
Total	47,242		47,242		30,949
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
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	58,254		58,254		237,727
One year prior to current fiscal year	291,887		291,887		219,469
Two years prior to current fiscal year	145,675		145,675		18,239
Three years prior to current fiscal year	28,682		28,682		27,753
Four years prior to current fiscal year	23,102		23,102		13,742
Prior	29,758		29,758		19,427
Revolving	216,378		216,378		50,975
Total	793,736		793,736		587,332
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			0
Revolving, Charge Offs			0
Total, Charge Offs	0	0	0	0
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	58,254		58,254		223,204
One year prior to current fiscal year	290,673		290,673		209,738
Two years prior to current fiscal year	134,906		134,906		18,239
Three years prior to current fiscal year	28,682		28,682		24,600
Four years prior to current fiscal year	23,102		23,102		12,783
Prior	29,307		29,307		19,022
Revolving	216,059		216,059		50,960
Total	780,983		780,983		558,546
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		14,523
One year prior to current fiscal year	1,214		1,214		452
Two years prior to current fiscal year	794		794		0
Three years prior to current fiscal year	0		0		3,153
Four years prior to current fiscal year	0		0		0
Prior	394		394		0
Revolving	200		200		15
Total	2,602		2,602		18,143
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		9,227
Two years prior to current fiscal year	9,975		9,975		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		959
Prior	0		0		0
Revolving	0		0		0
Total	9,975		9,975		10,186
Construction and land development | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		52
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	57		57		405
Revolving	119		119		0
Total	176		176		457
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	99,731		99,731		216,147
One year prior to current fiscal year	263,570		263,570		251,638
Two years prior to current fiscal year	300,701		300,701		183,111
Three years prior to current fiscal year	176,184		176,184		192,625
Four years prior to current fiscal year	194,068		194,068		124,983
Prior	592,176		592,176		477,545
Revolving	49,451		49,451		32,253
Total	1,675,881		1,675,881		1,478,302
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			0
Revolving, Charge Offs			0
Total, Charge Offs	0	0	0	0
Commercial real estate - owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	99,731		99,731		215,453
One year prior to current fiscal year	259,947		259,947		251,638
Two years prior to current fiscal year	300,315		300,315		180,081
Three years prior to current fiscal year	169,143		169,143		185,286
Four years prior to current fiscal year	186,034		186,034		121,568
Prior	569,304		569,304		467,963
Revolving	49,385		49,385		32,253
Total	1,633,859		1,633,859		1,454,242
Commercial real estate - owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		694
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	350		350		2,363
Three years prior to current fiscal year	0		0		4,403
Four years prior to current fiscal year	871		871		2,548
Prior	9,252		9,252		2,869
Revolving	0		0		0
Total	10,473		10,473		12,877
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	2,775		2,775		0
Two years prior to current fiscal year	0		0		667
Three years prior to current fiscal year	6,377		6,377		2,625
Four years prior to current fiscal year	6,868		6,868		573
Prior	7,501		7,501		4,444
Revolving	66		66		0
Total	23,587		23,587		8,309
Commercial real estate - owner occupied | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	848		848		0
Two years prior to current fiscal year	36		36		0
Three years prior to current fiscal year	664		664		311
Four years prior to current fiscal year	295		295		294
Prior	6,119		6,119		2,269
Revolving	0		0		0
Total	7,962		7,962		2,874
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	151,486		151,486		593,364
One year prior to current fiscal year	842,420		842,420		546,911
Two years prior to current fiscal year	655,525		655,525		252,787
Three years prior to current fiscal year	301,148		301,148		338,460
Four years prior to current fiscal year	406,447		406,447		233,622
Prior	891,421		891,421		589,304
Revolving	37,527		37,527		35,326
Total	3,285,974		3,285,974		2,589,774
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			0
Revolving, Charge Offs			109
Total, Charge Offs	0	179	109	179
Commercial real estate - non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	151,486		151,486		593,364
One year prior to current fiscal year	842,420		842,420		530,462
Two years prior to current fiscal year	653,228		653,228		231,693
Three years prior to current fiscal year	291,699		291,699		331,173
Four years prior to current fiscal year	396,142		396,142		228,077
Prior	865,181		865,181		575,656
Revolving	37,285		37,285		35,326
Total	3,237,441		3,237,441		2,525,751
Commercial real estate - non-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		16,257
Two years prior to current fiscal year	2,108		2,108		735
Three years prior to current fiscal year	0		0		5,438
Four years prior to current fiscal year	0		0		0
Prior	13,992		13,992		4,975
Revolving	0		0		0
Total	16,100		16,100		27,405
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		192
Two years prior to current fiscal year	189		189		19,315
Three years prior to current fiscal year	8,383		8,383		0
Four years prior to current fiscal year	8,456		8,456		5,515
Prior	5,754		5,754		7,412
Revolving	242		242		0
Total	23,024		23,024		32,434
Commercial real estate - non-owner occupied | Substandard Impaired
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		1,044
Three years prior to current fiscal year	1,066		1,066		1,849
Four years prior to current fiscal year	1,849		1,849		30
Prior	6,494		6,494		1,261
Revolving	0		0		0
Total	9,409		9,409		4,184
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	0		0		0
Revolving	0		0		0
Total	0		0		0
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	149,013		149,013		270,054
One year prior to current fiscal year	439,094		439,094		552,950
Two years prior to current fiscal year	647,052		647,052		122,062
Three years prior to current fiscal year	164,244		164,244		77,132
Four years prior to current fiscal year	100,478		100,478		98,008
Prior	435,022		435,022		302,994
Revolving	484,000		484,000		426,303
Total	2,418,903		2,418,903		1,849,503
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			159
Revolving, Charge Offs			153
Total, Charge Offs	44	0	312	1
Residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	149,010		149,010		270,054
One year prior to current fiscal year	439,061		439,061		552,950
Two years prior to current fiscal year	646,121		646,121		121,879
Three years prior to current fiscal year	164,118		164,118		77,100
Four years prior to current fiscal year	98,896		98,896		97,900
Prior	424,737		424,737		292,867
Revolving	475,311		475,311		423,764
Total	2,397,254		2,397,254		1,836,514
Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	3		3		0
One year prior to current fiscal year	33		33		0
Two years prior to current fiscal year	70		70		50
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	1,267		1,267		25
Prior	769		769		269
Revolving	5,467		5,467		884
Total	7,609		7,609		1,228
Residential real estate | 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	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		343
Revolving	768		768		85
Total	768		768		428
Residential real estate | Substandard Impaired
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	861		861		133
Three years prior to current fiscal year	126		126		32
Four years prior to current fiscal year	315		315		83
Prior	9,516		9,516		9,515
Revolving	2,454		2,454		1,570
Total	13,272		13,272		11,333
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	232,740		232,740		361,082
One year prior to current fiscal year	388,489		388,489		320,855
Two years prior to current fiscal year	378,522		378,522		146,607
Three years prior to current fiscal year	145,908		145,908		84,487
Four years prior to current fiscal year	77,655		77,655		63,364
Prior	108,279		108,279		63,135
Revolving	252,457		252,457		309,106
Total	1,584,050		1,584,050		1,348,636
Current fiscal year, Charge Offs			206
One year prior to current fiscal year, Charge Offs			117
Two years prior to current fiscal year, Charge Offs			109
Three years prior to current fiscal year, Charge Offs			1,484
Four years prior to current fiscal year, Charge Offs			265
Prior, Charge Offs			12,584
Revolving, Charge Offs			418
Total, Charge Offs	11,814	77	15,183	899
Commercial and financial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	232,472		232,472		359,833
One year prior to current fiscal year	377,084		377,084		320,307
Two years prior to current fiscal year	354,060		354,060		140,450
Three years prior to current fiscal year	139,626		139,626		77,562
Four years prior to current fiscal year	70,860		70,860		57,924
Prior	94,921		94,921		58,648
Revolving	246,568		246,568		292,818
Total	1,515,591		1,515,591		1,307,542
Commercial and financial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	129		129		1,244
One year prior to current fiscal year	3,545		3,545		423
Two years prior to current fiscal year	1,086		1,086		106
Three years prior to current fiscal year	1,002		1,002		474
Four years prior to current fiscal year	461		461		195
Prior	3,583		3,583		259
Revolving	2,842		2,842		2,998
Total	12,648		12,648		5,699
Commercial and financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	7,860		7,860		67
Two years prior to current fiscal year	20,895		20,895		942
Three years prior to current fiscal year	4,942		4,942		6,304
Four years prior to current fiscal year	5,558		5,558		1,603
Prior	2,448		2,448		1,683
Revolving	1,786		1,786		13,114
Total	43,489		43,489		23,713
Commercial and financial | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	139		139		5
One year prior to current fiscal year	0		0		58
Two years prior to current fiscal year	2,481		2,481		5,109
Three years prior to current fiscal year	338		338		147
Four years prior to current fiscal year	776		776		3,642
Prior	7,327		7,327		2,545
Revolving	1,261		1,261		176
Total	12,322		12,322		11,682
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		0
Revolving	0		0		0
Total	0		0		0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	28,535		28,535		93,012
One year prior to current fiscal year	63,461		63,461		77,889
Two years prior to current fiscal year	51,375		51,375		28,011
Three years prior to current fiscal year	20,999		20,999		29,077
Four years prior to current fiscal year	21,642		21,642		11,728
Prior	20,969		20,969		16,908
Revolving	41,559		41,559		29,962
Total	248,540		248,540		286,587
Current fiscal year, Charge Offs			9
One year prior to current fiscal year, Charge Offs			927
Two years prior to current fiscal year, Charge Offs			2,146
Three years prior to current fiscal year, Charge Offs			291
Four years prior to current fiscal year, Charge Offs			138
Prior, Charge Offs			214
Revolving, Charge Offs			139
Total, Charge Offs	1,265	$ 152	3,864	$ 446
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	28,535		28,535		93,012
One year prior to current fiscal year	59,686		59,686		77,889
Two years prior to current fiscal year	48,611		48,611		27,982
Three years prior to current fiscal year	20,742		20,742		28,772
Four years prior to current fiscal year	21,552		21,552		11,690
Prior	20,634		20,634		16,480
Revolving	40,713		40,713		29,725
Total	240,473		240,473		285,550
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	1,935		1,935		0
Two years prior to current fiscal year	1,170		1,170		0
Three years prior to current fiscal year	79		79		250
Four years prior to current fiscal year	25		25		2
Prior	6		6		134
Revolving	751		751		30
Total	3,966		3,966		416
Consumer | 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	0		0		11
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		191
Revolving	0		0		0
Total	0		0		202
Consumer | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	1,840		1,840		0
Two years prior to current fiscal year	1,594		1,594		18
Three years prior to current fiscal year	178		178		55
Four years prior to current fiscal year	65		65		36
Prior	329		329		103
Revolving	95		95		207
Total	4,101		4,101		419
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
PPP Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		2,708
Two years prior to current fiscal year	1,957		1,957		1,882
Three years prior to current fiscal year	2,145		2,145		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	4,102		4,102		4,590
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			0
Revolving, Charge Offs			0
Total, Charge Offs			0
PPP Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		2,708
Two years prior to current fiscal year	1,957		1,957		1,882
Three years prior to current fiscal year	2,145		2,145		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	4,102		4,102		4,590
PPP Loans | 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	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
PPP Loans | Substandard Impaired
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

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
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 159,715	$ 90,769	$ 113,895	$ 83,315
Allowance on PCD Loans Acquired During the Period			18,879	51
Provision for Credit Losses	2,694	4,676	33,528	12,054
Charge- Offs	(13,123)	(408)	(19,468)	(1,525)
Recoveries	375	305	2,827	1,467
TDR Allowance Adjustments		(13)		(33)
Ending Balance	149,661	95,329	149,661	95,329
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	6,960	2,552	6,464	2,751
Allowance on PCD Loans Acquired During the Period			5	0
Provision for Credit Losses	725	792	1,208	529
Charge- Offs	0	0	0	0
Recoveries	0	1	8	65
TDR Allowance Adjustments		0		0
Ending Balance	7,685	3,345	7,685	3,345
Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	6,418	7,376	6,051	8,579
Allowance on PCD Loans Acquired During the Period			139	0
Provision for Credit Losses	(353)	(2,182)	(127)	(3,385)
Charge- Offs	0	0	0	0
Recoveries	0	0	2	0
TDR Allowance Adjustments		0		0
Ending Balance	6,065	5,194	6,065	5,194
Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	54,103	46,459	43,258	36,617
Allowance on PCD Loans Acquired During the Period			647	31
Provision for Credit Losses	(1,677)	(6,841)	8,461	2,961
Charge- Offs	0	(179)	(109)	(179)
Recoveries	15	23	184	32
TDR Allowance Adjustments		0		0
Ending Balance	52,441	39,462	52,441	39,462
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	36,710	14,821	29,605	12,811
Allowance on PCD Loans Acquired During the Period			400	17
Provision for Credit Losses	2,009	11,193	8,659	12,901
Charge- Offs	(44)	0	(312)	(1)
Recoveries	60	31	383	334
TDR Allowance Adjustments		(8)		(25)
Ending Balance	38,735	26,037	38,735	26,037
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	40,272	17,144	15,648	19,744
Allowance on PCD Loans Acquired During the Period			17,527	3
Provision for Credit Losses	2,932	(1,457)	11,548	(3,585)
Charge- Offs	(11,814)	(77)	(15,183)	(899)
Recoveries	135	92	1,985	440
TDR Allowance Adjustments		(1)		(2)
Ending Balance	31,525	15,701	31,525	15,701
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	15,252	2,417	12,869	2,813
Allowance on PCD Loans Acquired During the Period			161	0
Provision for Credit Losses	(942)	3,171	3,779	2,633
Charge- Offs	(1,265)	(152)	(3,864)	(446)
Recoveries	165	158	265	596
TDR Allowance Adjustments		(4)		(6)
Ending Balance	$ 13,210	$ 5,590	$ 13,210	$ 5,590

Allowance for Credit Losses - N

Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Charge-Offs	$ 13,123	$ 408	$ 19,468	$ 1,525
Loans moved from individually evaluated to collectively evaluated	19,900
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Line Items]
Charge-Offs	11,814	$ 77	$ 15,183	$ 899
Commercial and financial | Financial Asset Acquired, Fully Reserved
Financing Receivable, Allowance for Credit Loss [Line Items]
Charge-Offs	$ 11,300

Allowance for Credit Losses - S

Allowance for Credit Losses - Schedule of Loan Portfolio, Excluding PCI Loans and Related Allowance (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Recorded Investment
Individually Evaluated	$ 35,524		$ 31,514
Collectively Evaluated	9,975,662		8,113,210
Total	10,011,186		8,144,724
Associated Allowance
Individually Evaluated	8,592		3,547
Collectively Evaluated	141,069		110,348
Total	149,661	$ 159,715	113,895	$ 95,329	$ 90,769	$ 83,315
Construction and land development
Recorded Investment
Individually Evaluated	0		59
Collectively Evaluated	793,736		587,273
Total	793,736		587,332
Associated Allowance
Individually Evaluated	0		0
Collectively Evaluated	7,685		6,464
Total	7,685	6,960	6,464	3,345	2,552	2,751
Commercial real estate - owner occupied
Recorded Investment
Individually Evaluated	1,908		3,346
Collectively Evaluated	1,673,973		1,474,956
Total	1,675,881		1,478,302
Associated Allowance
Individually Evaluated	0		41
Collectively Evaluated	6,065		6,010
Total	6,065	6,418	6,051	5,194	7,376	8,579
Commercial real estate - non-owner occupied
Recorded Investment
Individually Evaluated	8,519		4,183
Collectively Evaluated	3,277,455		2,585,591
Total	3,285,974		2,589,774
Associated Allowance
Individually Evaluated	530		230
Collectively Evaluated	51,911		43,028
Total	52,441	54,103	43,258	39,462	46,459	36,617
Residential real estate
Recorded Investment
Individually Evaluated	1,810		11,333
Collectively Evaluated	2,417,093		1,838,170
Total	2,418,903		1,849,503
Associated Allowance
Individually Evaluated	0		275
Collectively Evaluated	38,735		29,330
Total	38,735	36,710	29,605	26,037	14,821	12,811
Commercial and financial
Recorded Investment
Individually Evaluated	23,287		12,167
Collectively Evaluated	1,564,865		1,341,059
Total	1,588,152		1,353,226
Associated Allowance
Individually Evaluated	8,062		2,639
Collectively Evaluated	23,463		13,009
Total	31,525		15,648
Consumer
Recorded Investment
Individually Evaluated	0		426
Collectively Evaluated	248,540		286,161
Total	248,540		286,587
Associated Allowance
Individually Evaluated	0		362
Collectively Evaluated	13,210		12,507
Total	$ 13,210	$ 15,252	$ 12,869	$ 5,590	$ 2,417	$ 2,813

Derivatives - Narrative (Detail

Derivatives - Narrative (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($) contract	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) contract	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Derivative [Line Items]
Loss recognized in OCI		$ 100,000		$ 300,000
Reclassification from AOCI into income	$ 200,000	$ 100,000	$ 500,000	$ 300,000
Reclassification of fair value hedge from AOCI into income	700,000		7,000,000
Amount of fair value hedge expected to be reclassified from accumulated other comprehensive income into interest income	(5,400)		100,000
Back-to-Back Swap
Derivative [Line Items]
Notional amount	505,742,000		$ 505,742,000		$ 312,808,000
Weighted average maturity (in years)			6 years		6 years 8 months 12 days
Back-to-Back Swap | Fair Value Hedging
Derivative [Line Items]
Notional amount	$ 400,000,000		$ 400,000,000
Number of derivative contracts | contract	2		2
Back-to-Back Swap | Other Assets and Other Liabilities
Derivative [Line Items]
Fair value of derivative assets and liabilities	$ 37,362,000		$ 37,362,000		$ 23,140,000
Back-to-Back Swap | Other Assets | Fair Value Hedging
Derivative [Line Items]
Fair value of derivative assets and liabilities	6,914,000		6,914,000
Interest Rate Floor
Derivative [Line Items]
Notional amount	$ 300,000,000		$ 300,000,000		300,000,000
Number of derivative contracts | contract	2		2
Amount expected to be reclassified from accumulated other comprehensive income into interest income			$ 100,000
Interest Rate Floor | Other Assets
Derivative [Line Items]
Fair value of derivative assets and liabilities	$ 0		0		$ 2,000
Interest Rate Floor, October 2023 Maturity
Derivative [Line Items]
Notional amount	150,000,000		150,000,000
Interest Rate Floor, November 2023 Maturity
Derivative [Line Items]
Notional amount	150,000,000		150,000,000
Interest Rate Swap 1, April 2025 Maturity | Fair Value Hedging
Derivative [Line Items]
Notional amount	200,000,000		200,000,000
Interest Rate Swap 2, April 2025 Maturity | Fair Value Hedging
Derivative [Line Items]
Notional amount	$ 200,000,000		$ 200,000,000

Derivatives - Schedule of Deriv

Derivatives - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Back-to-back swaps
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	$ 505,742	$ 312,808
Back-to-back swaps | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	400,000
Back-to-back swaps | Other Assets and Other Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative assets and liabilities	37,362	23,140
Back-to-back swaps | Other Assets | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative assets and liabilities	6,914
Interest rate floors
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	300,000	300,000
Interest rate floors | Other Assets
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative assets and liabilities	$ 0	$ 2

Derivatives - Fair Value Hedges

Derivatives - Fair Value Hedges (Details) - Debt Securities - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Carrying amount of the hedged items	$ 574,823	$ 0
Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items	7,014	0
Financial Asset, Closed Portfolio, Portfolio Layer Method, Amortized Cost	$ 696,200	$ 0

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, 2023	Dec. 31, 2022
Fair value of pledged securities - overnight and continuous:
Fair value of debt securities pledged as collateral	$ 1,800,000
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	$ 358,448	$ 184,967

Equity Capital (Details)

Equity Capital (Details)	Sep. 30, 2023
Equity [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, 2023	Dec. 31, 2022
Financial Assets
Available-for-sale debt securities	$ 1,841,845	$ 1,871,742
Loans held for sale	2,979	3,151
Other real estate owned	7,216	2,301
Fair Value, Measurements, Recurring
Financial Assets
Available-for-sale debt securities	1,841,845	1,871,742
Derivative financial instruments	44,276	23,142
Loans held for sale	2,979	3,151
Equity securities	13,120	8,220
Financial Liabilities
Derivative financial instruments	37,362	23,142
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Available-for-sale debt securities	188	186
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	13,120	8,220
Financial Liabilities
Derivative financial instruments	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Available-for-sale debt securities	1,841,657	1,871,556
Derivative financial instruments	44,276	23,142
Loans held for sale	2,979	3,151
Equity securities	0	0
Financial Liabilities
Derivative financial instruments	37,362	23,142
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Available-for-sale debt securities	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	10,482	8,513
Other real estate owned	7,216	2,301
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	818	1,183
Other real estate owned	7,216	2,301
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Loans	9,664	7,330
Other real estate owned	$ 0	$ 0

Fair Value - Aggregate Fair Val

Fair Value - Aggregate Fair Value and Contractual Balance of Loans for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of loans held for sale	$ 2,979	$ 3,151
Excess	133	80
Contractual Balance
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of loans held for sale	$ 2,846	$ 3,071

Fair Value - Narrative (Details

Fair Value - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Average capitalization rate	6.90%
Allowance for credit losses	$ 149,661	$ 159,715	$ 113,895	$ 95,329	$ 90,769	$ 83,315
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	10,482		8,513
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	9,664		7,330
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring | Loans Receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Additions	3,200
Paydowns and charge-offs	6,300
Collateral-Dependent Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	11,500		10,200
Allowance for credit losses	$ 1,000		$ 2,900

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, 2023	Dec. 31, 2022
Financial Assets
Debt securities held-to-maturity	$ 691,404	$ 747,408
Time deposits with other banks	4,357	3,236
Loans, net	9,861,525	8,030,829
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Debt securities held-to-maturity	0	0
Time deposits with other banks	0	0
Loans, net	0	0
Financial Liabilities
Deposit liabilities	0	0
Federal Home Loan Bank (“FHLB”) borrowings	0	0
Subordinated debt, net	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Debt securities held-to-maturity	537,218	617,741
Time deposits with other banks	4,241	2,989
Loans, net	0	0
Financial Liabilities
Deposit liabilities	0	0
Federal Home Loan Bank (“FHLB”) borrowings	0	0
Subordinated debt, net	98,110	82,226
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Debt securities held-to-maturity	0	0
Time deposits with other banks	0	0
Loans, net	9,591,237	7,845,375
Financial Liabilities
Deposit liabilities	12,106,525	9,976,125
Federal Home Loan Bank (“FHLB”) borrowings	110,293	149,450
Subordinated debt, net	0	0
Carrying Value | Fair Value, Measurements, Recurring
Financial Assets
Debt securities held-to-maturity	691,404	747,408
Time deposits with other banks	4,357	3,236
Loans, net	9,851,043	8,022,316
Financial Liabilities
Deposit liabilities	12,107,834	9,981,595
Federal Home Loan Bank (“FHLB”) borrowings	110,000	150,000
Subordinated debt, net	$ 106,136	$ 84,533

Business Combinations - Narrati

Business Combinations - Narrative (Details)				3 Months Ended		9 Months Ended
	Jan. 31, 2023 USD ($) branch	Oct. 07, 2022 USD ($) branch	Jan. 03, 2022 USD ($) branch	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Business Acquisition [Line Items]
Goodwill				$ 731,970,000		$ 731,970,000			$ 480,319,000
Allowance for credit losses				149,661,000	$ 95,329,000	149,661,000	$ 95,329,000	$ 159,715,000	$ 113,895,000	$ 90,769,000	$ 83,315,000
Acquisition costs				$ 0	$ 2,100,000	$ 33,200,000	$ 11,800,000
Professional Holding Corp.
Business Acquisition [Line Items]
Number of branches operated | branch	9
Percentage of common stock acquired	100%
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)	0.8909
Goodwill	$ 251,226,000
Measurement period adjustment, acquired loan	5,544,000
Measurement period adjustment, receivable	2,409,000
Fair value of options and warrants converted	10,304,000
Allowance for credit losses	45,500,000
Professional Holding Corp. | PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses at acquisition	18,879,000
Professional Holding Corp. | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses	$ 26,600,000
Apollo Bancshares, Inc.
Business Acquisition [Line Items]
Number of branches operated | branch		5
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)		1.006529
Goodwill		$ 90,488,000
Measurement period adjustment, acquired loan		0
Measurement period adjustment, receivable		(251,000)
Fair value of options and warrants converted		6,530,000
Allowance for credit losses		$ 7,800,000
Minority interest portion, number of Seacoast stock for each share of stock converted (in shares)		1.195651
Apollo Bancshares, Inc. | PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses at acquisition		$ 2,658,000
Apollo Bancshares, Inc. | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses		$ 5,100,000
Drummond Banking Company
Business Acquisition [Line Items]
Number of branches operated | branch		18
Percentage of common stock acquired		100%
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)		51.9561
Goodwill		$ 103,649,000
Goodwill recognized from acquisition, nondeductible		103,600,000
Measurement period adjustment, acquired loan		0
Measurement period adjustment, receivable		(173,000)
Allowance for credit losses		12,500,000
Drummond Banking Company | PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses at acquisition		2,566,000
Drummond Banking Company | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses		$ 9,900,000
Business Bank of Florida
Business Acquisition [Line Items]
Number of branches operated | branch			1
Percentage of common stock acquired			100%
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)			0.7997
Goodwill			$ 7,962,000
Goodwill recognized from acquisition, nondeductible			8,000,000
Fair value of options and warrants converted			497,000
Allowance for credit losses			1,800,000
Business Bank of Florida | Stock Option | Seacoast 2021 Incentive Plan
Business Acquisition [Line Items]
Fair value of options and warrants converted			500,000
Business Bank of Florida | PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses			15,000
Allowance for credit losses at acquisition			15,000
Business Bank of Florida | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses			$ 1,800,000
Sabal Palm Bancorp, Inc.
Business Acquisition [Line Items]
Number of branches operated | branch			3
Percentage of common stock acquired			100%
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)			0.2203
Goodwill			$ 26,489,000
Goodwill recognized from acquisition, nondeductible			26,500,000
Fair value of options and warrants converted			3,336,000
Allowance for credit losses			3,400,000
Sabal Palm Bancorp, Inc. | Stock Option | Seacoast 2021 Incentive Plan
Business Acquisition [Line Items]
Fair value of options and warrants converted			3,300,000
Sabal Palm Bancorp, Inc. | PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses			37,000
Allowance for credit losses at acquisition			37,000
Sabal Palm Bancorp, Inc. | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses			$ 3,400,000

Business Combinations - Purchas

Business Combinations - Purchase Price (Details) $ / shares in Units, $ in Thousands	Jan. 31, 2023 USD ($) $ / shares shares	Oct. 07, 2022 USD ($) $ / shares shares	Jan. 03, 2022 USD ($) $ / shares shares
Professional Holding Corp.
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares	14,358,000
Per share exchange ratio (in shares)	0.8909
Number of shares of SBCF common stock issues (in shares) | shares	12,792,000
Multiplied by common stock price per share (in dollars per share) | $ / shares	$ 32.11
Value of common stock issued	$ 410,738
Cash paid for fractional shares	5
Fair value of options and warrants converted	10,304
Total purchase price	$ 421,047
Apollo Bancshares, Inc.
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares		3,766,000
Per share exchange ratio (in shares)		1.006529
Number of shares of SBCF common stock issues (in shares) | shares		3,791,000
Number of minority interest shares outstanding (in shares) | shares		609,000
Per share exchange ratio (in shares)		1.195651
Number of shares of SBCF common stock issued, minority interest converted (in shares) | shares		728,000
Number of shares of common stock issued (in shares) | shares		4,519,000
Multiplied by common stock price per share (in dollars per share) | $ / shares		$ 30.83
Value of common stock issued		$ 139,307
Cash paid for fractional shares		5
Fair value of options and warrants converted		6,530
Total purchase price		$ 145,842
Drummond Banking Company
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares		99,000
Per share exchange ratio (in shares)		51.9561
Number of shares of common stock issued (in shares) | shares		5,136,000
Multiplied by common stock price per share (in dollars per share) | $ / shares		$ 30.83
Total purchase price		$ 158,332
Business Bank of Florida
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares			1,112,000
Per share exchange ratio (in shares)			0.7997
Number of shares of common stock issued (in shares) | shares			889,000
Multiplied by common stock price per share (in dollars per share) | $ / shares			$ 35.39
Value of common stock issued			$ 31,480
Fair value of options and warrants converted			497
Total purchase price			$ 31,977
Sabal Palm Bancorp, Inc.
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares			7,536,000
Per share exchange ratio (in shares)			0.2203
Number of shares of common stock issued (in shares) | shares			1,660,000
Multiplied by common stock price per share (in dollars per share) | $ / shares			$ 35.39
Value of common stock issued			$ 58,762
Fair value of options and warrants converted			3,336
Total purchase price			$ 62,098

Business Combinations - Fair Va

Business Combinations - Fair Value of the Assets Purchased, Including Goodwill and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Oct. 07, 2022	Sep. 30, 2023	Dec. 31, 2022	Jan. 03, 2022
Assets:
Goodwill			$ 731,970	$ 480,319
Professional Holding Corp.
Assets:
Cash and cash equivalents	$ 141,680
Measurement Period Adjustments, Cash and cash equivalents	0
Investments	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	251,226
Measurement Period Adjustments, Goodwill	3,135
BOLI	55,071
Measurement Period Adjustments, BOLI	0
Other Assets	76,641
Measurement Period Adjustments, Other Assets	2,409
Total Assets	2,729,209
Measurement Period Adjustments, Total Assets	0
Liabilities:
Deposits	2,119,341
Measurement Period Adjustments, Deposits	0
Subordinated debt	21,141
Measurement Period Adjustments, Subordinated debt	0
Other Liabilities	167,680
Measurement Period Adjustments, Other Liabilities	0
Total Liabilities	2,308,162
Measurement Period Adjustments, Total Liabilities	0
Professional Holding Corp. | Initially Measured
Assets:
Cash and cash equivalents	141,680
Investments	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
Apollo Bancshares, Inc.
Assets:
Cash and cash equivalents		$ 41,001
Measurement Period Adjustments, Cash and cash equivalents		0
Investments		203,596
Measurement Period Adjustments, Investment Securities		0
Loans		666,522
Measurement Period Adjustments, Loans		0
Bank premises and equipment		7,809
Measurement Period Adjustments, Bank premises and equipment		0
Core deposit intangibles		28,699
Measurement Period Adjustments, Core deposit intangibles		0
Goodwill		90,488
Measurement Period Adjustments, Goodwill		251
Other Assets		52,473
Measurement Period Adjustments, Other Assets		(251)
Total Assets		1,090,588
Measurement Period Adjustments, Total Assets		0
Liabilities:
Deposits		854,774
Measurement Period Adjustments, Deposits		0
Other Liabilities		89,972
Measurement Period Adjustments, Other Liabilities		0
Total Liabilities		944,746
Measurement Period Adjustments, Total Liabilities		0
Apollo Bancshares, Inc. | Initially Measured
Assets:
Cash and cash equivalents		41,001
Investments		203,596
Loans		666,522
Bank premises and equipment		7,809
Core deposit intangibles		28,699
Goodwill		90,237
Other Assets		52,724
Total Assets		1,090,588
Liabilities:
Deposits		854,774
Other Liabilities		89,972
Total Liabilities		944,746
Drummond Banking Company
Assets:
Cash and cash equivalents		31,805
Measurement Period Adjustments, Cash and cash equivalents		0
Investments		327,852
Measurement Period Adjustments, Investment Securities		0
Loans		544,694
Measurement Period Adjustments, Loans		0
Bank premises and equipment		29,370
Measurement Period Adjustments, Bank premises and equipment		0
Core deposit intangibles		32,983
Measurement Period Adjustments, Core deposit intangibles		0
Goodwill		103,649
Measurement Period Adjustments, Goodwill		173
Other Assets		49,639
Measurement Period Adjustments, Other Assets		(173)
Total Assets		1,119,992
Measurement Period Adjustments, Total Assets		0
Liabilities:
Deposits		881,281
Measurement Period Adjustments, Deposits		0
Other Liabilities		80,379
Measurement Period Adjustments, Other Liabilities		0
Total Liabilities		961,660
Measurement Period Adjustments, Total Liabilities		0
Drummond Banking Company | Initially Measured
Assets:
Cash and cash equivalents		31,805
Investments		327,852
Loans		544,694
Bank premises and equipment		29,370
Core deposit intangibles		32,983
Goodwill		103,476
Other Assets		49,812
Total Assets		1,119,992
Liabilities:
Deposits		881,281
Other Liabilities		80,379
Total Liabilities		$ 961,660
Business Bank of Florida
Assets:
Cash and cash equivalents					$ 38,332
Investments					26,011
Loans					121,774
Bank premises and equipment					2,102
Core deposit intangibles					2,621
Goodwill					7,962
Total Assets					198,802
Liabilities:
Deposits					166,326
Other Liabilities					499
Total Liabilities					166,825
Sabal Palm Bancorp, Inc.
Assets:
Cash and cash equivalents					170,609
Investments					6,473
Loans					246,152
Bank premises and equipment					1,745
Core deposit intangibles					5,587
Goodwill					26,489
Other Assets					5,189
Total Assets					462,244
Liabilities:
Deposits					395,952
Other Liabilities					4,194
Total Liabilities					$ 400,146

Business Combinations - Fair _2

Business Combinations - Fair Value of Acquired Loans (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Oct. 07, 2022	Jan. 03, 2022
Professional Holding Corp.
Business Acquisition [Line Items]
Book Balance	$ 2,139,222
Fair Value	1,986,169
Professional Holding Corp. | Construction and land development
Business Acquisition [Line Items]
Book Balance	156,048
Fair Value	151,012
Professional Holding Corp. | Commercial real estate - owner occupied
Business Acquisition [Line Items]
Book Balance	293,473
Fair Value	274,068
Professional Holding Corp. | Commercial real estate - non-owner occupied
Business Acquisition [Line Items]
Book Balance	752,393
Fair Value	692,746
Professional Holding Corp. | Residential real estate
Business Acquisition [Line Items]
Book Balance	509,305
Fair Value	483,611
Professional Holding Corp. | Commercial and financial
Business Acquisition [Line Items]
Book Balance	392,396
Fair Value	350,628
Professional Holding Corp. | Consumer
Business Acquisition [Line Items]
Book Balance	33,656
Fair Value	32,153
Professional Holding Corp. | PPP Loans
Business Acquisition [Line Items]
Book Balance	1,951
Fair Value	$ 1,951
Apollo Bancshares, Inc.
Business Acquisition [Line Items]
Book Balance		$ 717,578
Fair Value		666,522
Apollo Bancshares, Inc. | Construction and land development
Business Acquisition [Line Items]
Book Balance		74,126
Fair Value		70,654
Apollo Bancshares, Inc. | Commercial real estate - owner occupied
Business Acquisition [Line Items]
Book Balance		131,093
Fair Value		121,600
Apollo Bancshares, Inc. | Commercial real estate - non-owner occupied
Business Acquisition [Line Items]
Book Balance		374,673
Fair Value		340,561
Apollo Bancshares, Inc. | Residential real estate
Business Acquisition [Line Items]
Book Balance		76,254
Fair Value		75,957
Apollo Bancshares, Inc. | Commercial and financial
Business Acquisition [Line Items]
Book Balance		50,125
Fair Value		46,695
Apollo Bancshares, Inc. | Consumer
Business Acquisition [Line Items]
Book Balance		11,307
Fair Value		11,055
Drummond Banking Company
Business Acquisition [Line Items]
Book Balance		587,002
Fair Value		544,694
Drummond Banking Company | Construction and land development
Business Acquisition [Line Items]
Book Balance		155,041
Fair Value		140,401
Drummond Banking Company | Commercial real estate - owner occupied
Business Acquisition [Line Items]
Book Balance		112,768
Fair Value		106,152
Drummond Banking Company | Commercial real estate - non-owner occupied
Business Acquisition [Line Items]
Book Balance		26,520
Fair Value		24,744
Drummond Banking Company | Residential real estate
Business Acquisition [Line Items]
Book Balance		85,767
Fair Value		78,663
Drummond Banking Company | Commercial and financial
Business Acquisition [Line Items]
Book Balance		88,026
Fair Value		82,067
Drummond Banking Company | Consumer
Business Acquisition [Line Items]
Book Balance		118,880
Fair Value		$ 112,667
Business Bank of Florida
Business Acquisition [Line Items]
Book Balance			$ 123,916
Fair Value			121,774
Business Bank of Florida | Construction and land development
Business Acquisition [Line Items]
Book Balance			8,677
Fair Value			8,414
Business Bank of Florida | Commercial real estate - owner occupied
Business Acquisition [Line Items]
Book Balance			45,403
Fair Value			44,564
Business Bank of Florida | Commercial real estate - non-owner occupied
Business Acquisition [Line Items]
Book Balance			53,065
Fair Value			52,034
Business Bank of Florida | Residential real estate
Business Acquisition [Line Items]
Book Balance			5,377
Fair Value			5,421
Business Bank of Florida | Commercial and financial
Business Acquisition [Line Items]
Book Balance			11,335
Fair Value			11,280
Business Bank of Florida | Consumer
Business Acquisition [Line Items]
Book Balance			59
Fair Value			61
Sabal Palm Bancorp, Inc.
Business Acquisition [Line Items]
Book Balance			248,910
Fair Value			246,152
Sabal Palm Bancorp, Inc. | Construction and land development
Business Acquisition [Line Items]
Book Balance			9,256
Fair Value			9,009
Sabal Palm Bancorp, Inc. | Commercial real estate - owner occupied
Business Acquisition [Line Items]
Book Balance			57,690
Fair Value			56,591
Sabal Palm Bancorp, Inc. | Commercial real estate - non-owner occupied
Business Acquisition [Line Items]
Book Balance			89,153
Fair Value			87,280
Sabal Palm Bancorp, Inc. | Residential real estate
Business Acquisition [Line Items]
Book Balance			71,469
Fair Value			72,227
Sabal Palm Bancorp, Inc. | Commercial and financial
Business Acquisition [Line Items]
Book Balance			21,109
Fair Value			20,813
Sabal Palm Bancorp, Inc. | Consumer
Business Acquisition [Line Items]
Book Balance			233
Fair Value			$ 232

Business Combinations - Purch_2

Business Combinations - Purchased Credit Impaired Loans (Details) - PCD Loans - USD ($) $ in Thousands	Jan. 31, 2023	Oct. 07, 2022	Jan. 03, 2022
Professional Holding Corp.
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
Apollo Bancshares, Inc.
Business Acquisition [Line Items]
Book balance of loans at acquisition		$ 107,744
Allowance for credit losses at acquisition		(2,658)
Non-credit related discount		(14,191)
Total PCD loans acquired		90,895
Drummond Banking Company
Business Acquisition [Line Items]
Book balance of loans at acquisition		58,878
Allowance for credit losses at acquisition		(2,566)
Non-credit related discount		(4,607)
Total PCD loans acquired		$ 51,705
Business Bank of Florida
Business Acquisition [Line Items]
Book balance of loans at acquisition			$ 714
Allowance for credit losses at acquisition			(15)
Non-credit related discount			(48)
Total PCD loans acquired			651
Sabal Palm Bancorp, Inc.
Business Acquisition [Line Items]
Book balance of loans at acquisition			3,703
Allowance for credit losses at acquisition			(37)
Non-credit related discount			(663)
Total PCD loans acquired			$ 3,003

Business Combinations - Pro-For

Business Combinations - Pro-Forma Information (Details) - Professional Holding Corp. - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Business Acquisition, Pro Forma Information [Abstract]
Net interest income	$ 119,306	$ 121,341	$ 388,189	$ 339,213
Net income available to common shareholders	$ 31,414	$ 46,076	$ 99,905	$ 89,728
EPS - basic (in dollars per share)	$ 0.37	$ 0.62	$ 1.18	$ 1.21
EPS - diluted (in dollars per share)	$ 0.37	$ 0.62	$ 1.17	$ 1.20