Seacoast Banking Corporation of Florida (SBCF) 10-K 1 Mar 23 2022 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2022	Jan. 31, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
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 Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 2,028,996,312
Entity Common Stock, Shares Outstanding		84,526,816
Documents Incorporated by Reference	Certain portions of the registrant’s Proxy Statement for the 2023 Annual Meeting of Shareholders (the “2023 Proxy Statement”) are incorporated by reference into Part III, Items 10 through 14 of this report. Other than those portions of the 2023 Proxy Statement specifically incorporated by reference herein pursuant to Items 10 through 14, no other portions of the 2023 Proxy Statement shall be deemed so incorporated.
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Central Index Key	0000730708

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2022
Audit Information [Abstract]
Auditor Name	Crowe LLP
Auditor Location	Fort Lauderdale, Florida
Auditor Firm ID	173

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest and dividends on securities
Taxable	$ 56,611	$ 29,206	$ 29,718
Nontaxable	546	577	454
Interest and fees on loans	315,717	251,471	254,366
Interest on interest bearing deposits and other investments	7,620	2,990	2,497
Total Interest Income	380,494	284,244	287,035
Interest Expense
Interest on deposits	7,318	3,605	6,920
Interest on time certificates	2,642	2,788	13,365
Interest on securities sold under agreement to repurchase	986	141	283
Interest on Federal Home Loan Bank (“FHLB”) borrowings	330	0	1,540
Interest on subordinated debt	3,056	1,685	2,184
Total Interest Expense	14,332	8,219	24,292
Net Interest Income	366,162	276,025	262,743
Provision for credit losses	26,183	(9,421)	38,179
Net Interest Income After Provision for Credit Losses	339,979	285,446	224,564
Noninterest Income:
Service charges on deposit accounts	13,709	9,777	9,429
Interchange income	17,171	16,231	13,711
Wealth management income	11,051	9,628	7,507
Mortgage banking fees	3,478	11,782	14,696
Marine finance fees	920	665	690
SBA gains	842	1,531	685
BOLI income	5,572	4,154	3,561
SBIC income	1,305	6,778	1,373
Other	13,139	10,759	8,683
Noninterest income, excluding securities gains (losses)	67,187	71,305	60,335
Securities (losses) gains, net (includes $0 for 2022, net gains of $2.2 million for 2021 and net gains of $0.2 million for 2020 in other comprehensive income reclassifications)	(1,096)	(578)	1,235
Total Noninterest Income	66,091	70,727	61,570
Noninterest Expense:
Salaries and wages	130,100	97,283	88,539
Employee benefits	19,026	17,873	15,544
Outsourced data processing costs	27,510	19,919	19,053
Telephone / data lines	3,799	3,223	2,984
Occupancy	18,539	14,140	14,150
Furniture and equipment	6,420	5,390	5,874
Marketing	6,286	4,583	4,833
Legal and professional fees	20,703	11,376	9,167
FDIC assessments	3,137	2,405	1,268
Amortization of intangibles	9,101	5,033	5,857
Foreclosed property expense and net (gain) loss on sale	(1,534)	(264)	2,263
Provision for credit losses on unfunded commitments	1,157	133	185
Other	23,690	16,341	15,835
Total Noninterest Expense	267,934	197,435	185,552
Income Before Income Taxes	138,136	158,738	100,582
Income taxes	31,629	34,335	22,818
Net Income	$ 106,507	$ 124,403	$ 77,764
Net income per share of common stock
Diluted (in dollars per share)	$ 1.66	$ 2.18	$ 1.44
Basic (in dollars per share)	$ 1.67	$ 2.20	$ 1.45
Average common shares outstanding (in thousands)
Diluted (in shares)	64,264	57,088	53,930
Basic (in shares)	63,707	56,586	53,502

CONSOLIDATED STATEMENTS OF IN_2

CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Gains included in other comprehensive income reclassifications	$ 0	$ 2.2	$ 0.2

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 106,507	$ 124,403	$ 77,764
Other comprehensive income (loss):
Unrealized (losses) gains on available-for-sale securities, net of tax benefit of $57.1 million in 2022, tax benefit of $8.2 million in 2021 and tax expense of $5.0 million in 2020	(181,096)	(27,377)	16,628
Amortization of unrealized (gains) losses on securities transferred to held-to-maturity, net of tax benefit of $7 thousand in 2022, tax expense of $21 thousand in 2021, and tax expense of $40 thousand in 2020	(20)	86	184
Reclassification adjustment for losses (gains) included in net income, net of tax benefit of $85 thousand in 2021 and tax expense of $314 thousand in 2020	0	278	(782)
Unrealized gains (losses) on derivatives designated as cash flow hedges, net of reclassifications to income, net of tax benefit of $26 thousand in 2022, tax expense of $120 thousand in 2021, and tax expense of $42 thousand in 2020	77	(351)	(125)
Total other comprehensive (loss) income	(181,039)	(27,364)	15,905
Comprehensive (Loss) Income	$ (74,532)	$ 97,039	$ 93,669

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Unrealized (losses) gains on available-for-sale securities, tax benefit	$ 57,100	$ 8,200	$ (5,000)
Amortization of unrealized losses on securities transferred to held-to-maturity, tax expense	(7)	21	40
Reclassification adjustment for losses (gains) included in net income, tax (benefit) expense		(85)	314
Unrealized losses on cash flow hedging derivatives, net of reclassifications, tax expense	$ (26)	$ 120	$ 42

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets
Cash and due from banks	$ 120,748	$ 238,750
Interest bearing deposits with other banks	81,192	498,979
Total cash and cash equivalents	201,940	737,729
Time deposits with other banks	3,236	0
Securities available-for-sale (at fair value)	1,871,742	1,644,319
Securities held-to-maturity (fair value $617.7 million in 2022 and $627.4 million in 2021)	747,408	638,640
Total debt securities	2,619,150	2,282,959
Loans held for sale (at fair value)	3,151	31,791
Loans	8,144,724	5,925,029
Less: Allowance for credit losses	(113,895)	(83,315)
Loans, net of allowance for credit losses	8,030,829	5,841,714
Bank premises and equipment, net	116,892	72,404
Other real estate owned	2,301	13,618
Goodwill	480,319	252,154
Other intangible assets, net	75,451	14,845
Bank owned life insurance	237,824	205,041
Net deferred tax assets	94,457	27,321
Other assets	280,212	201,857
Total Assets	12,145,762	9,681,433
Deposits
Noninterest demand	4,070,973	3,075,534
Interest-bearing demand	2,337,590	1,890,212
Savings	1,064,392	895,019
Money market	1,985,974	1,651,881
Other time deposits	369,389	404,601
Brokered time certificates	3,798	0
Time certificates of more than $250,000	149,479	150,342
Total Deposits	9,981,595	8,067,589
Securities sold under agreements to repurchase, maturing within 30 days	172,029	121,565
Federal Home Loan Bank (“FHLB”) borrowings	150,000	0
Subordinated debt	84,533	71,646
Other liabilities	149,830	109,897
Total Liabilities	10,537,987	8,370,697
Commitments and Contingencies
Common stock, shares outstanding (in shares)	71,617,852	58,504,250
Shareholders' Equity
Common stock, par value $0.10 per share authorized 120,000,000 shares, issued 72,099,136 and outstanding 71,617,852 shares in 2022 and authorized 120,000,000 shares, issued 58,909,369 and outstanding 58,504,250 shares in 2021	$ 7,162	$ 5,850
Additional paid-in capital	1,377,802	963,851
Retained earnings	423,863	358,598
Less: Treasury stock (481,284 shares in 2022 and 405,119 shares in 2021), at cost	(13,019)	(10,569)
Total shareholders' equity, before accumulated other comprehensive income (loss), net	1,795,808	1,317,730
Accumulated other comprehensive loss, net	(188,033)	(6,994)
Total Shareholders' Equity	1,607,775	1,310,736
Total Liabilities & Shareholders' Equity	$ 12,145,762	$ 9,681,433
Common Stock, Shares, Issued	72,099,136	58,909,369

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Held for investment, fair value, total	$ 617,741	$ 627,398
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)	72,099,136	58,909,369
Common stock, shares outstanding (in shares)	71,617,852	58,504,250
Treasury stock (in shares)	481,284	405,119

CONSOLIDATED STATEMENT OF CASH

CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows From Operating Activities
Net Income	$ 106,507	$ 124,403	$ 77,764
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	6,115	5,482	6,020
Amortization of premiums and discounts on securities, net	576	6,220	5,019
Amortization of operating lease right-of-use assets	6,485	4,576	4,362
Other amortization and accretion, net	(1,967)	(13,908)	(8,667)
Stock based compensation	11,155	8,685	7,304
Origination of loans designated for sale	(186,504)	(490,426)	(511,706)
Sale of loans designated for sale	221,199	543,410	477,178
Provision for credit losses	26,183	(9,421)	38,179
Deferred income taxes	(10,398)	3,836	(4,926)
Losses (gains) on sale of securities	0	363	(1,096)
Gains on sale of loans	(5,687)	(15,276)	(13,930)
(Gains) losses on sale and write-downs of other real estate owned	(1,749)	(635)	1,139
Losses on disposition of fixed assets	1,394	817	791
Changes in operating assets and liabilities, net of effects from acquired companies:
Net decrease (increase) in other assets	508	(42,437)	(35,555)
Net increase in other liabilities	22,042	28,883	18,776
Net Cash Provided by Operating Activities	195,859	154,572	60,652
Cash Flows From Investing Activities
Maturities and repayments of available-for-sale debt securities	270,785	546,339	304,064
Maturities and repayments of held-to-maturity debt securities	96,925	132,916	75,861
Proceeds from sale of available-for-sale debt securities	515,183	84,972	96,732
Purchases of available-for-sale debt securities	(693,625)	(1,145,193)	(830,300)
Purchases of held-to-maturity debt securities	(206,065)	(377,159)	0
Maturities of time deposits with other banks	3,237	750	2,992
Net new loans and principal repayments	(513,343)	566,348	(79,100)
Purchases of loans held for investment	(111,292)	(259,267)	0
Proceeds from the sale of other real estate owned	15,951	5,598	8,521
Additions to other real estate owned	(591)	(2,513)	(2,557)
Proceeds from sale of FHLB and Federal Reserve Bank Stock	0	3,945	39,185
Purchase of FHLB and Federal Reserve Bank Stock	(11,924)	(3,020)	(28,278)
Redemption of bank owned life insurance	25,782	0	0
Purchase of bank owned life insurance	(25,000)	(60,000)	0
Net cash from bank acquisitions	281,747	98,100	71,965
Additions to bank premises and equipment	(12,645)	(4,327)	(1,587)
Net Cash Used in Investing Activities	(364,875)	(412,511)	(342,502)
Cash Flows From Financing Activities
Net (decrease) increase in deposits	(384,403)	640,108	844,405
Net increase in repurchase agreements	50,464	1,956	33,488
Net decrease in FHLB borrowings with original maturities of three months or less	(62,500)	0	(235,000)
Repayments of FHLB borrowings with original maturities of more than three months	(7,500)	(33,000)	(115,000)
Proceeds from FHLB borrowings with original maturities of more than three months	75,000	0	35,000
Stock based employee benefit plans	3,408	5,022
Stock based employee benefit plans			(1,486)
Dividends paid	(41,242)	(22,506)	0
Net Cash (Used in) Provided by Financing Activities	(366,773)	591,580	561,407
Net (decrease) increase in cash and cash equivalents	(535,789)	333,641	279,557
Cash and Cash Equivalents at Beginning of Year	737,729	404,088	124,531
Cash and Cash Equivalents at End of Year	201,940	737,729	404,088
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	13,743	9,977	23,548
Cash paid during the period for taxes	29,591	30,887	27,712
Recognition of operating lease right-of-use assets, other than through bank acquisition, net of terminations	3,370	12,459	2,095
Recognition of operating lease liabilities, other than through bank acquisition, net of terminations	3,370	12,459	2,095
Supplemental disclosure of non-cash investing activities:1
Transfer of debt securities from available-for-sale to held-to-maturity	0	210,805	0
Unsettled sales of debt securities available-for-sale	0	17,147	0
Transfer from loans to other real estate owned	0	0	5,624
Transfer from bank premises to other real estate owned	$ 1,674	$ 3,318	$ 1,289

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Issuance of common stock, pursuant to acquisition	Common Stock	Paid-in Capital	Retained Earnings	Retained Earnings Issuance of common stock, pursuant to acquisition	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2019			51,514
Beginning balance at Dec. 31, 2019	$ 985,639	$ (16,876)	$ 5,151	$ 786,242	$ 195,813	$ (16,876)	$ (6,032)	$ 4,465
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	93,669				77,764			15,905
Stock based compensation expense (in shares)			39
Stock based compensation expense	7,304			7,304
Common stock issued for stock based employee benefit plans (in shares)			465
Common stock issued for stock based employee benefit plans	(2,252)		$ 51	(50)			(2,253)
Common stock issued for stock options (in shares)			62
Common stock issued for stock options	766		$ 6	760
Issuance of common stock, pursuant to acquisition (in shares)			3,163
Issuance of common stock, pursuant to acquisitions	62,152		$ 316	61,836
Ending balance (in shares) at Dec. 31, 2020			55,243
Ending balance at Dec. 31, 2020	1,130,402		$ 5,524	856,092	256,701		(8,285)	20,370
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	97,039				124,403			(27,364)
Stock based compensation expense (in shares)			23
Stock based compensation expense	8,685			8,685
Common stock issued for stock based employee benefit plans (in shares)			167
Common stock issued for stock based employee benefit plans	(2,314)		$ 19	(49)			(2,284)
Common stock issued for stock options (in shares)			384
Common stock issued for stock options	7,336		$ 38	7,298
Issuance of common stock, pursuant to acquisition (in shares)			2,687
Issuance of common stock, pursuant to acquisitions	86,487		$ 269	86,218
Conversion of options, pursuant to acquisition	5,607			5,607
Dividends on common stock	(22,506)				(22,506)
Ending balance (in shares) at Dec. 31, 2021			58,504
Ending 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)	(74,532)				106,507			(181,039)
Stock based compensation expense (in shares)			21
Stock based compensation expense	11,155			11,155
Common stock issued for stock based employee benefit plans (in shares)			367
Common stock issued for stock based employee benefit plans	(2,507)		$ 40	(97)			(2,450)
Common stock issued for stock options (in shares)			522
Common stock issued for stock options	5,916		$ 52	5,864
Issuance of common stock, pursuant to acquisition (in shares)			12,204
Issuance of common stock, pursuant to acquisitions	397,236		$ 1,220	396,016
Conversion of options, pursuant to acquisition	1,013			1,013
Dividends on common stock	(41,242)				(41,242)
Ending balance (in shares) at Dec. 31, 2022			71,618
Ending balance at Dec. 31, 2022	$ 1,607,775		$ 7,162	$ 1,377,802	$ 423,863		$ (13,019)	$ (188,033)

CONSOLIDATED STATEMENTS OF SH_2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Statement of Stockholders' Equity [Abstract]
Dividends on common stock (in dollars per share)	$ 0.64	$ 0.39

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies General: Seacoast Banking Corporation of Florida (“Seacoast” or the “Company”) is a single segment financial holding company with one operating subsidiary bank, Seacoast National Bank (“Seacoast Bank”). The Company provides integrated financial services including commercial and consumer banking, wealth management, and mortgage and insurance services to customers at 78 full-service branches across Florida, and through advanced mobile and online banking solutions. The consolidated financial statements include the accounts of Seacoast and all its majority-owned subsidiaries but exclude trusts created for the issuance of trust preferred securities. In consolidation, all significant intercompany accounts and transactions are eliminated. The accounting and reporting policies of the Company are in accordance with accounting principles generally accepted in the United States of America, and they conform to general practices within the applicable industries. Certain prior period amounts have been reclassified to conform to the current period presentation. Use of Estimates: The preparation of 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 determination of the allowance for credit losses, acquisition accounting and purchased loans, intangible assets and impairment testing, other fair value measurements, and contingent liabilities. Cash and Cash Equivalents: Cash and cash equivalents include cash and due from banks and interest-bearing bank balances. Cash equivalents have original maturities of three months or less, and accordingly, the carrying amount of these instruments is deemed to be a reasonable estimate of fair value. Time Deposits with Other Banks: Time deposits with other banks consist of certificates of deposit with original maturities greater than three months and are carried at cost. Securities Purchased and Sold Agreements: Securities purchased under resale agreements and securities sold under repurchase agreements are generally accounted for as collateralized financing transactions and are recorded at the amount at which the securities were acquired or sold plus accrued interest. It is the Company’s policy to take possession of securities purchased under resale agreements, which are primarily U.S. government and government agency securities. The fair value of securities purchased and sold is monitored and collateral is obtained from or returned to the counterparty when appropriate. Securities: Debt securities are classified at date of purchase as available-for-sale or held-to-maturity. Debt securities that may be sold as part of the Company's asset/liability management or in response to, or in anticipation of, changes in interest rates and resulting prepayment risk, or for other factors are stated at fair value with unrealized gains or losses reflected as a component of shareholders' equity net of tax or included in noninterest income as appropriate. Debt securities that the Company has the ability and intent to hold to maturity are carried at amortized cost. Equity securities are stated at fair value with unrealized gains or losses included in noninterest income as securities gains or losses. 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. Realized gains and losses are included in noninterest income as investment securities gains (losses). Interest and dividends on securities, including amortization of premiums and accretion of discounts on debt securities, is recognized in interest income on an accrual basis using the interest method. The Company anticipates prepayments of principal in the calculation of the effective yield for collateralized mortgage obligations and mortgage backed securities by obtaining estimates of prepayments from independent third parties. The adjusted cost of each specific security sold is used to compute realized gains or losses on the sale of securities on a trade date basis. Credit losses on securities: For securities classified as held-to-maturity, management estimates expected credit losses over the remaining expected life and recognizes this estimate as an allowance for credit losses. Debt securities that are available-for-sale are considered impaired if the fair value is less than amortized cost. Impairments are analyzed at an individual security level on a quarterly basis and both quantitative and qualitative assessments are utilized to determine if a security has a credit loss. Qualitative assessments consider a range of factors including: percent decline in fair value, rating downgrades, subordination, duration, amortized loan-to-value, and the ability of the issuers to pay all amounts due in accordance with the contractual terms. Quantitative assessments are based on a discounted cash flow analysis, which includes evaluating the timing and amount of the expected cash flows. If any portion of the decline in fair value is related to credit, then the credit loss is recognized as an allowance for credit loss and the noncredit portion is recognized in other comprehensive income. Both quantitative and qualitative assessments are utilized to determine if a security has a credit loss. Quantitative assessments are based on a discounted cash flow method. Qualitative assessments consider a range of factors including: percent decline in fair value, rating downgrades, subordination, duration, amortized loan-to-value, and the ability of the issuers to pay all amounts due in accordance with the contractual terms. Loans Held for Sale: The Company has elected to account for residential mortgage loans originated as held for sale at fair value. Changes in fair value are measured and recorded in Mortgage Banking Fees in noninterest income each period. The Company designates other loans as held for sale when it has the intent to sell them. Such loans are transferred to held for sale at the lower of cost or estimated fair value less cost to sell. At the time of transfer, write-downs on the loans are recorded as charge-offs, establishing a new cost basis upon transfer. Loans Held for Investment: Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are considered held for investment. Loans originated by Seacoast and held for investment are recognized at the principal amount outstanding, net of unearned income and amounts charged off. Unearned income includes discounts, premiums and deferred loan origination fees reduced by loan origination costs. Unearned income on loans is amortized to interest income over the life of the related loan using the effective interest rate method. Interest income is recognized on an accrual basis. Loans acquired through business acquisitions are recorded at fair value on the acquisition date. Loans that, as of the date of acquisition, have experienced a more-than-insignificant deterioration in credit quality since origination are classified as purchased credit deteriorated (“PCD”). Acquired loans that do not meet the definition of PCD are classified by the Company as acquired Non-PCD. Expected credit losses on loans not considered PCD are recognized through the provision for credit losses when the initial allowance is recorded. A loan for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulty, is considered to be a troubled debt restructuring (“TDR”). The allowance for credit losses policy discusses the measurement of allowance for TDRs. Allowance for credit losses on loans: The allowance for credit losses represents management's best estimate of expected future credit losses related to the loan portfolio at the balance sheet date. The allowance for credit losses is a valuation account that is deducted from the loans' amortized cost basis to present the net amount to be collected on loans. Loan balances deemed uncollectible are charged off against the allowance for credit losses and recoveries are credited to the allowance. In order to adjust the allowance to the current estimate of expected credit losses, charges or credits to the provision for credit losses are reflected in the Consolidated Statements of Income. The Company excludes accrued interest on loans from its determination of allowance. Portfolio segments represent the level at which the Company develops and documents its methodology for determining its allowance for credit losses. See Note 4 - Loans, for a description of each of the segments, which are disaggregated by similar risk characteristics such as customer and/or collateral type. The allowance for credit losses is measured on a collective basis when similar risk characteristics exist. 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 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. The forecast may utilize one scenario or a composite of scenarios based on management's judgment and expectations around the current and future macroeconomic outlook. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. In the implementation of CECL at January 1, 2020 and through June 30, 2022, the Company utilized a top-down allowance model based on an analysis of the probability of default (“PD”) and loss given default (“LGD”) to determine an expected loss by loan segment. During the third quarter of 2022, the Company transitioned to a tool that calculates the quantitative portion of expected credit losses at the individual loan level using a discounted cash flow methodology for its commercial loans and using a loss rate methodology for its consumer loans. The new tool being utilized produces more granular results of expected loan loss, incorporates more extensive historical loss data, and allows for a more efficient process. This change did not result in a material impact to the Company’s financial statements. Adjustments may be made to baseline reserves based on an assessment of internal and external influences on credit quality not fully reflected in the quantitative components of the allowance model. These influences may include elements such as changes in concentration, macroeconomic conditions, recent observable asset quality trends, staff turnover, regional market conditions, employment levels, model risk, and loan growth. Based upon management's assessments of these factors, the Company may apply qualitative adjustments to the allowance. Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not also included in the collective evaluation. For loans that are individually evaluated, the allowance is determined through review of data specific to the borrower and the related collateral, if any. When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. The contractual term of a loan excludes expected extensions, renewals, and modification unless either of the following applies: management has a reasonable expectation at the reporting date that a TDR will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and not unconditionally cancellable by the Company. The allowance for PCD loans is determined at the time of acquisition as the estimated expected credit loss of the outstanding balance or par value, based on the methodologies described previously for loans. The allowance recognized at acquisition is added to the acquisition date purchase price to determine the asset’s amortized cost basis. The allowance for credit losses on TDRs is measured using the fair value of the collateral method when the repayment is expected to be provided substantially through the operation or sale of the collateral. Otherwise, when the value of a concession can only be measured using the discounted cash flow method, the allowance for credit losses is determined by discounting the expected future cash flows at the original interest rate of the loan. It is the Company's practice to ensure that the charge-off policy meets or exceeds regulatory requirements. Losses on unsecured consumer loans are recognized at 90 days past due, compared to the regulatory loss criteria of 120 days. In compliance with Federal Financial Institution Examination Council guidelines, secured consumer loans, including residential real estate, are typically charged off or charged down between 120 and 180 days past due, depending on the collateral type. Commercial loans and real estate loans are typically placed on nonaccrual status when principal or interest is past due for 90 days or more, unless the loan is both secured by collateral having realizable value sufficient to discharge the debt in-full and the loan is in process of collection. Secured loans may be charged down to the estimated value of the collateral with previously accrued unpaid interest reversed against interest income. Subsequent charge-offs may be required as a result of changes in the market value of collateral or other repayment prospects. Initial charge-off amounts are based on valuation estimates derived from appraisals or other market information. Generally, new appraisals are not received until the foreclosure process is completed; however, collateral values are evaluated periodically based on market information and incremental charge-offs are recorded if it is determined that collateral values have declined from their initial estimates. Derivative Instruments and Hedging Activities : The Company enters into derivative contracts, including swaps and floors, to meet the needs of customers who request such services and to manage the Company's exposure to interest rate fluctuations. Derivative contracts are carried at fair value and recorded in the consolidated balance sheet within other assets or other liabilities. The gain or loss resulting from changes in the fair value of interest rate swaps designated and qualifying as cash flow hedging instruments is initially reported as a component of other comprehensive income and subsequently reclassified into earnings through interest income in the same period in which the hedged transaction affects earnings. The Company discontinues hedge accounting prospectively when it is determined that the derivative contract is no longer effective in offsetting changes in the cash flows of the hedged item, the derivative expires or is terminated, management determines that the designation of the derivative as a hedging instrument is no longer appropriate or, for a cash flow hedge, the occurrence of the forecasted transaction is no longer probable. When hedge accounting on a cash flow hedge is discontinued, any subsequent changes in fair value of the derivative are recognized in earnings. The cumulative unrealized gain or loss related to a discontinuing cash flow hedge continues to be reported in Accumulated Other Comprehensive Income (“AOCI”) and is subsequently reclassified into earnings in the same period in which the hedged transactions affects earnings, unless it is probable that the forecasted transaction will not occur by the end of the originally specified time period, in which case the cumulative unrealized gain or loss in AOCI is reclassified into earnings immediately. Cash flows resulting from derivative financial instruments that are accounted for as hedges are classified in the cash flow statement in the same category as the cash flows from the hedged items. See additional disclosures related to derivative instruments and hedging activities in “Note 6 – Derivatives”. Loan Commitments and Letters of Credit: Loan commitments and letters of credit are an off-balance sheet item and represent commitments to make loans or lines of credit available to borrowers. The face amount of these commitments represents an exposure to loss, before considering customer collateral or ability to repay. Such commitments are recognized as loans when funded. The Company estimates a reserve for potential losses on unfunded commitments, which is reported separately from the allowance for credit losses within Other Liabilities. The reserve is based upon the same quantitative and qualitative factors applied to the collectively evaluated loan portfolio. Fees received for providing loan commitments and letters of credit that may result in loans are typically deferred and amortized to interest income over the life of the related loan, beginning with the initial borrowing. Fees on commitments and letters of credit are amortized to noninterest income as banking fees and commissions on a straight-line basis over the commitment period when funding is not expected. Fair Value Measurements: The Company measures or monitors the fair value of many of its assets and liabilities. Certain assets are measured on a recurring basis, including available-for-sale securities and loans held for sale. These assets are carried at fair value on the Company’s balance sheets. Additionally, fair value is measured on a non-recurring basis to evaluate assets or liabilities for impairment or for disclosure purposes. Examples include collateral-dependent loans, other real estate owned, loan servicing rights, goodwill, and long-lived assets. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, the Company uses various valuation techniques and assumptions when estimating fair value. The Company applies the following fair value hierarchy: Level 1 – Assets or liabilities for which the identical item is traded on an active exchange, such as publicly-traded instruments or futures contracts. Level 2 – Assets and liabilities valued based on observable market data for similar instruments. Level 3 – Assets and liabilities for which significant valuation assumptions are not readily observable in the market; instruments valued based on the best available data, some of which is internally-developed, and considers risk premiums that a market participant would require. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at and/or marked to fair value, the Company considers the principal market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability. When possible, the Company looks to active and observable markets to price identical assets or liabilities. When identical assets and liabilities are not traded in active markets, the Company looks to market observable data for similar assets and liabilities. Certain assets and liabilities are not actively traded in observable markets and the Company must use alternative valuation techniques to derive a fair value measurement. Bank Premises and Equipment: Bank premises and equipment are stated at cost, less accumulated depreciation and amortization. Premises and equipment include certain costs associated with the acquisition of leasehold improvements. Depreciation and amortization are recognized principally by the straight-line method, over the estimated useful lives as follows: buildings - 25-40 years, leasehold improvements - 5-25 years, furniture and equipment - 3-12 years. Leasehold improvements amortize over the shorter of lease terms or estimated useful life. Premises and equipment and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are written down to fair value with a corresponding increase to noninterest expense. Other Real Estate Owned: Other real estate owned (“OREO”) consists primarily of real estate acquired in lieu of unpaid loan balances. These assets are carried at an amount equal to the loan balance prior to foreclosure plus costs incurred for improvements to the property, but no more than the estimated fair value of the property less estimated selling costs. Any valuation adjustments required at the date of transfer are charged to the allowance for credit losses. Subsequently, unrealized losses and realized gains and losses are included in other noninterest expense. Operating results from OREO are recorded in other noninterest expense. OREO may also include bank premises no longer utilized in the course of the Company's business (closed branches) that are initially recorded at the lower of carrying value or fair value, less costs to sell. If the fair value of the premises is less than amortized book value, a write down is recorded through noninterest expense. Costs to maintain the property are expensed. Intangible Assets. The Company’s intangible assets consist of goodwill, core deposit intangibles (CDIs), customer relationship intangibles and loan servicing rights. Goodwill results from business combinations and represents the difference between the purchase price and the fair value of net assets acquired. Goodwill may be adjusted for up to one year from the acquisition date in the event new information is obtained which, if known at the date of the acquisition would have impacted the fair value of the acquired assets and liabilities. Goodwill is considered to have an indefinite useful life and is not amortized, but rather tested for impairment annually in the fourth quarter, or more often if circumstances arise that may indicate risk of impairment. If impaired, goodwill is written down with a corresponding impact to noninterest expense. The Company recognizes CDIs that result from either whole bank acquisitions or branch acquisitions. They are initially measured at fair value and then amortized over periods ranging from six Bank Owned Life Insurance (BOLI): The Company, through its subsidiary bank, has purchased or acquired through bank acquisitions, life insurance policies on certain key executives. BOLI is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement. Other Investments: Included in Other Assets are investments in funds generating affordable housing tax credits, and investments in Small Business Investment Companies (“SBICs”), which are privately owned and operated companies licensed by the U.S. Small Business Administration (“SBA”) to invest in small businesses. Investments generating tax credits are accounted for using the proportional amortization method. Under this method, the investor amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits allocated to the investor. SBIC investments are held at cost less impairment, if any. Income from SBIC investments will vary amongst periods and is recognized in noninterest income. Seacoast Bank is a member of the Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”) systems. Members are required to own a certain amount of FHLB and FRB stock based on the level of borrowings and other factors, and may invest in additional amounts. The FHLB and FRB stock are accounted for at cost less impairment, if any. Both cash and stock dividends are recognized in earnings. Leases: Arrangements are analyzed at inception to determine the existence of a lease. Right-of-use assets (ROUAs) represent the right to use the underlying asset and lease liabilities represent the obligation to make lease payments for the lease term. Operating lease ROUAs and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of the Company's leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the appropriate term and information available at commencement date in determining the present value of lease payments. The lease term may include options to extend the lease when it is reasonably certain that the option will be exercised. ROUAs and operating lease liabilities are reported in Other Assets and Other Liabilities, respectively, in the Consolidated Balance Sheet. Lease expense for lease payments is recognized on a straight-line basis over the lease term and is classified as Occupancy or Furniture and Equipment expense based on the subject asset. Revenue Recognition: Revenue recognized reflects the consideration to which the Company expects to be entitled in exchange for the services provided and is recognized when the promised services (performance obligations) are transferred to a customer, requiring the application of the following five-steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. Relevant activity includes: • Service Charges on Deposits: Seacoast Bank offers a variety of deposit-related services to its customers through several delivery channels including branch offices, ATMs, telephone, mobile, and internet banking. Transaction-based fees are recognized when services, each of which represents a performance obligation, are satisfied. Service fees may be assessed monthly, quarterly, or annually; however, the account agreements to which these fees relate can be canceled at any time by Seacoast and/or the customer. Therefore, the contract term is considered a single day (a day-to-day contract). • Wealth Management Income: The Company earns trust fees from fiduciary services provided to trust customers, which include custody of assets, recordkeeping, collection and distribution of funds. Fees are earned over time and accrued monthly as the Company provides services, and are generally assessed based on the market value of the trust assets under management at a particular date or over a particular period. The Company also earns commissions and fees from investment brokerage services provided to its customers through an arrangement with a third-party service provider. Commissions received from the third-party service provider are recorded monthly and are based upon customer activity. Fees are earned over time and accrued monthly as services are provided. The Company acts as an agent in this arrangement and therefore presents the brokerage commissions and fees net of related costs. • Interchange Income: Fees earned on card transactions depend upon the volume of activity, as well as the fees permitted by the payment network. Such fees are recognized by the Company upon fulfilling its performance obligation to approve the card transaction. Treasury Stock: The Company's repurchase of shares of its common stock are recorded at cost as treasury stock and result in a reduction of shareholders' equity. Activity in treasury stock represents shares traded to offset employee payroll taxes on vested shares. Shares held in treasury are used for employee share purchases through the Company's stock purchase plan. Stock-Based Compensation: The stock option plans are accounted for under ASC Topic 718 - Compensation - Stock Compensation and the fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with market assumptions. This amount is amortized on a straight-line basis over the vesting period, generally five years. For restricted stock awards, which generally vest based on continued service with the Company, the deferred compensation is measured as the fair value of the shares on the date of grant, and the deferred compensation is amortized as salaries and employee benefits in accordance with the applicable vesting schedule, generally straight-line over three years. Some shares vest based upon the Company achieving certain performance goals and salary amortization expense is based on an estimate of the most likely results on a straight line basis. The Company accounts for forfeitures as they occur. Income Taxes : The Company uses the asset and liability method of accounting for income taxes. Deferred tax assets and liabilities are determined based on temporary differences between the carrying amounts of assets and liabilities in the consolidated financial statements and their related tax bases and are measured using the enacted tax rates and laws that are in effect. A valuation allowance is recognized for a deferred tax asset if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. The effect on deferred tax assets and liabilities of a change in rates is recognized as income or expense in the period in which the change occurs. Recently Issued Accounting Standards In March 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2022-02, Financial Instruments - Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclo sures. 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. The Company adopted the standard effective January 1, 2023, and the adoption did not have a material impact to the consolidated financial statements.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share are computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding during each period. Diluted earnings per share are based on the weighted-average number of common shares outstanding during each period, plus common share equivalents, calculated for share-based awards outstanding using the treasury stock method. In 2022 and 2020, options to purchase 1,505 and 508,000 shares of the Company's common stock, respectively, were antidilutive and accordingly were excluded in determining diluted earnings per share. In 2021, no options were antidilutive. For the Year Ended December 31, (In thousands, except per share data) 2022 2021 2020 Basic earnings per share Net Income $ 106,507 $ 124,403 $ 77,764 Total weighted average common stock outstanding 63,707 56,586 53,502 Net income per share $ 1.67 $ 2.20 $ 1.45 Diluted earnings per share Net Income $ 106,507 $ 124,403 $ 77,764 Total weighted average common stock outstanding 63,707 56,586 53,502 Add: Dilutive effect of share-based awards outstanding 557 502 428 Total weighted average diluted stock outstanding 64,264 57,088 53,930 Net income per share $ 1.66 $ 2.18 $ 1.44 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	12 Months Ended
	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The amortized cost, gross unrealized gains and losses and fair value of available-for-sale ("AFS") and held-to-maturity ("HTM") securities at December 31, 2022 and December 31, 2021 are summarized as follows: December 31, 2022 (In thousands) Amortized Gross Gross 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 December 31, 2021 (In thousands) Amortized Gross Gross Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 6,466 $ 316 $ (3) $ 6,779 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,234,721 8,308 (20,309) 1,222,720 Private mortgage-backed securities and collateralized mortgage obligations 88,096 1,091 (420) 88,767 Collateralized loan obligations 292,751 63 (124) 292,690 Obligations of state and political subdivisions 31,624 1,740 (1) 33,363 Totals $ 1,653,658 $ 11,518 $ (20,857) $ 1,644,319 Held-to-Maturity Debt Securities Mortgage-backed securities of U.S. government-sponsored entities $ 638,640 $ 3,828 $ (15,070) $ 627,398 Totals $ 638,640 $ 3,828 $ (15,070) $ 627,398 During 2022, debt securities with a fair value of $515.2 million obtained in bank acquisitions were sold. No gain or loss was recognized on these sales, and there were no other sales of securities in 2022. During 2021, debt securities with a fair value of $102.1 million were sold with gross gains of $0.3 million and gross losses of $0.6 million. Debt securities with a fair value of $96.7 million were sold during 2020, with gross gains of $2.4 million and gross losses of $1.3 million. Also included in “Securities gains (losses) net” are decreases of $1.1 million and $0.2 million in 2022 and 2021, respectively, and an increase of $0.1 million in 2020 in the value of an investment in shares of a mutual fund that invests in CRA-qualified debt securities. During the first quarter of 2021, the Company reclassified debt securities with an amortized cost of $210.8 million from available-for-sale to held-to-maturity, as it has the ability and intent to hold these securities to maturity. These securities had net unrealized gains of $0.8 million at the date of transfer, which will continue to be reported in accumulated other comprehensive income and will be amortized over the remaining life of the securities as an adjustment of yield. The effect on interest income of the amortization of net unrealized gains is offset by the amortization of the premium on the securities transferred. At December 31, 2022, debt securities with a fair value of $484.2 million were pledged primarily as collateral for public deposits and secured borrowings. The amortized cost and fair value of securities at December 31, 2022, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair Due in less than one year $ — $ — $ 1,990 $ 2,087 Due after one year through five years — — 17,509 17,419 Due after five years through ten years — — 3,123 3,030 Due after ten years — — 20,541 18,852 — — 43,163 41,388 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 747,408 $ 617,741 $ 1,561,197 $ 1,338,653 Private mortgage-backed securities and collateralized mortgage obligations — — 179,148 166,387 Collateralized loan obligations — — 313,155 302,904 Other debt securities — — 22,640 22,410 Totals $ 747,408 $ 617,741 $ 2,119,303 $ 1,871,742 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 flows analyses, using observable market data where available. 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. 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) December 31, 2021 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 $ 97 $ (1) $ 245 $ (2) $ 342 $ (3) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 955,881 (19,575) 11,953 (734) 967,834 (20,309) Private mortgage-backed securities and collateralized mortgage obligations 33,640 (173) 9,628 (247) 43,268 (420) Collateralized loan obligations 123,202 (81) 9,461 (43) 132,663 (124) Obligations of state and political subdivisions 499 (1) — — 499 (1) Totals $ 1,113,319 $ (19,831) $ 31,287 $ (1,026) $ 1,144,606 $ (20,857) At December 31, 2022, the Company had unrealized losses of $223.1 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 sufficient basis for the current expectation that there is no risk of loss if default were to occur. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at December 31, 2022, no allowance for credit losses has been recorded. At December 31, 2022, the Company had $12.8 million of unrealized losses on private label residential and commercial mortgage-backed securities and collateralized mortgage obligations having a fair value of $155.7 million. The securities have average credit support of 24%. 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 December 31, 2022, no allowance for credit losses has been recorded. At December 31, 2022, the Company had $10.3 million of unrealized losses in floating rate collateralized loan obligations (“CLOs”) having a fair value of $302.9 million. CLOs are special purpose vehicles and those in which the Company has invested acquire nearly all first-lien, broadly syndicated corporate loans across a diversified band of industries while providing support to senior tranche investors. As of December 31, 2022, all positions held by the Company are in AAA and AA tranches, with 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 movement and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at December 31, 2022, no allowance for credit losses has been recorded. At December 31, 2022, the Company had $1.7 million of unrealized losses on municipal securities having a fair value of $24.2 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 December 31, 2022, no allowance for credit losses has been recorded. At December 31, 2022, the Company had $0.4 million of unrealized losses on floating rate student loan asset-backed securities having a fair value of $11.5 million. These securities were issued under the U.S. Department of Education’s Federal Family Education Loan program, which generally provides a minimum of 97% U.S. Department of Education guarantee of principal. These securities also have added credit enhancement through over-collateralization and have an average credit support of 8%. Based on the assessment of all relevant factors, the Company believes any unrealized loss positions are a function of changes in investment spreads and interest rate movement and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at December 31, 2022, no allowance for credit losses has been recorded. All HTM debt securities are issued by government-sponsored entities, which are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. While the potential for default on these securities may be something 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 December 31, 2022, no allowance for credit losses has been recorded. Included in Other Assets at December 31, 2022 is $45.6 million of Federal Home Loan Bank and Federal Reserve Bank stock stated at par value. The Company has not identified events or changes in circumstances which may have a significant adverse effect on the fair value of these cost method investment securities. Accrued interest receivable on AFS and HTM debt securities of $7.0 million and $1.3 million, respectively, at December 31, 2022, and $3.4 million and $1.0 million, respectively, at December 31, 2021, is included in Other Assets

Loans

Loans	12 Months Ended
	Dec. 31, 2022
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. • Paycheck Protection Program (“PPP”): Loans originated under a temporary program established by the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”), and extended by the Economic Aid Act. Under the terms of the program, balances may be forgiven if the borrower uses the funds in a manner consistent with the program guidelines, and repayment is guaranteed by the U.S. government. In the third quarter of 2022, to align with the Company’s transition of the calculation of expected credit losses to a new modeling tool, $100 million in loans to commercial borrowers collateralized by residential properties were reclassified from “Residential real estate” to “Commercial real estate - non owner-occupied.” The following tables present net loan balances by segment as of: 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 Paycheck Protection Program 1,474 3,116 — 4,590 Totals $ 5,944,193 $ 1,965,749 $ 234,782 $ 8,144,724 December 31, 2021 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 199,341 $ 31,438 $ 45 $ 230,824 Commercial real estate - owner occupied 983,517 186,812 27,445 1,197,774 Commercial real estate - non-owner occupied 1,278,180 382,554 75,705 1,736,439 Residential real estate 1,261,306 156,957 7,091 1,425,354 Commercial and financial 968,318 84,395 16,643 1,069,356 Consumer 169,507 4,658 10 174,175 Paycheck Protection Program 69,503 21,604 — 91,107 Totals $ 4,929,672 $ 868,418 $ 126,939 $ 5,925,029 The amortized cost basis of loans at December 31, 2022 and 2021 included net deferred costs of $35.1 million and $28.6 million, respectively. At December 31, 2022, the remaining fair value adjustments on acquired loans were $97.7 million, or 4.3% of the outstanding acquired loan balances, compared to $23.1 million, or 2.3% of the acquired loan balances at December 31, 2021. 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 $28.2 million and $14.7 million at December 31, 2022 and 2021, respectively. Loans to directors and executive officers totaled $0.4 million and $0.6 million at December 31, 2022 and 2021, respectively. Two new loans were originated to officers or directors in 2022. The following table presents the status of net loan balances as of December 31, 2022 and December 31, 2021. 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 Paycheck Protection Program 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 Paycheck Protection Program 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 December 31, 2021 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 199,087 $ — $ — $ — $ 254 $ 199,341 Commercial real estate - owner occupied 982,804 — — — 713 983,517 Commercial real estate - non-owner occupied 1,276,582 — — — 1,598 1,278,180 Residential real estate 1,248,160 3,457 143 — 9,546 1,261,306 Commercial and financial 963,828 851 41 — 3,598 968,318 Consumer 168,791 565 23 15 113 169,507 Paycheck Protection Program 69,434 — — 69 — 69,503 Total Portfolio Loans $ 4,908,686 $ 4,873 $ 207 $ 84 $ 15,822 $ 4,929,672 Acquired Non-PCD Loans Construction and land development $ 31,438 $ — $ — $ — $ — $ 31,438 Commercial real estate - owner occupied 186,652 — 160 — — 186,812 Commercial real estate - non-owner occupied 381,510 — — — 1,044 382,554 Residential real estate 154,981 182 — — 1,794 156,957 Commercial and financial 84,180 — 40 — 175 84,395 Consumer 4,082 135 — — 441 4,658 Paycheck Protection Program 21,567 — — 37 — 21,604 Total Acquired Non-PCD Loans $ 864,410 $ 317 $ 200 $ 37 $ 3,454 $ 868,418 PCD Loans Construction and land development $ 40 $ — $ — $ — $ 5 $ 45 Commercial real estate - owner occupied 24,192 — — — 3,253 27,445 Commercial real estate - non-owner occupied 72,442 — — — 3,263 75,705 Residential real estate 5,386 — — — 1,705 7,091 Commercial and financial 13,547 — — — 3,096 16,643 Consumer 10 — — — — 10 Total PCD Loans $ 115,617 $ — $ — $ — $ 11,322 $ 126,939 Total Loans $ 5,888,713 $ 5,190 $ 407 $ 121 $ 30,598 $ 5,925,029 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 $1.6 million, $1.2 million, and $0.9 million in interest income on nonaccrual loans during the years ended December 31, 2022, 2021, and 2020, respectively. The following tables present net balances of loans on nonaccrual status and the related allowance for credit losses, if any, as of: 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 December 31, 2021 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ 37 $ 222 $ 259 $ 92 Commercial real estate - owner-occupied 2,976 990 3,966 419 Commercial real estate - non-owner occupied 4,490 1,415 5,905 27 Residential real estate 12,358 687 13,045 357 Commercial and financial 2,676 4,193 6,869 2,384 Consumer 29 525 554 525 Totals $ 22,566 $ 8,032 $ 30,598 $ 3,804 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. The following table presents collateral-dependent loans as of: (In thousands) December 31, 2022 December 31, 2021 Construction and land development $ 59 $ 271 Commercial real estate - owner-occupied 2,733 4,706 Commercial real estate - non-owner occupied 1,698 4,923 Residential real estate 11,333 16,334 Commercial and financial 10,448 8,741 Consumer 426 741 Totals $ 26,697 $ 35,716 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 or accruing TDRs. • 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. Some portion of the principal balance of loans classified as doubtful are likely to be charged off. The following tables present the risk rating of loans by year of origination as of: 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 December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Total 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 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 December 31, 2021 (In thousands) 2020 2019 2018 2017 2016 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 94,318 $ 23,860 $ 38,058 $ 25,507 $ 3,995 $ 15,466 $ 29,349 $ 230,553 Special Mention — — — — — — — — Substandard — — — — — — — — Substandard Impaired — — — 222 — 49 — 271 Doubtful — — — — — — — — Total $ 94,318 $ 23,860 $ 38,058 $ 25,729 $ 3,995 $ 15,515 $ 29,349 $ 230,824 Commercial real estate - owner occupied Risk Ratings: Pass $ 205,404 $ 154,432 $ 179,786 $ 132,353 $ 125,763 $ 363,986 $ 10,005 $ 1,171,729 Special Mention — 6,527 5,370 649 218 3,250 — 16,014 Substandard — — — — 3,290 1,610 — 4,900 Substandard Impaired — — 2,742 310 596 1,483 — 5,131 Doubtful — — — — — — — — Total $ 205,404 $ 160,959 $ 187,898 $ 133,312 $ 129,867 $ 370,329 $ 10,005 $ 1,197,774 Commercial real estate - non-owner occupied Risk Ratings: Pass $ 395,308 $ 207,824 $ 298,021 $ 186,339 $ 110,990 $ 460,435 $ 6,477 $ 1,665,394 Special Mention — — 844 — 289 13,850 — 14,983 Substandard — 4,776 3,009 23,206 1,900 17,266 — 50,157 Substandard Impaired — 1,044 1,849 — 326 2,686 — 5,905 Doubtful — — — — — — — — Total $ 395,308 $ 213,644 $ 303,723 $ 209,545 $ 113,505 $ 494,237 $ 6,477 $ 1,736,439 Residential real estate Risk Ratings: Pass $ 394,547 $ 114,364 $ 90,566 $ 119,836 $ 118,556 $ 213,950 $ 354,439 $ 1,406,258 Special Mention — — — 70 — 1,243 532 1,845 Substandard — 340 — — 58 422 86 906 Substandard Impaired — 149 724 39 4,415 8,507 2,511 16,345 Doubtful — — — — — — — — Total $ 394,547 $ 114,853 $ 91,290 $ 119,945 $ 123,029 $ 224,122 $ 357,568 $ 1,425,354 Commercial and financial Risk Ratings: Pass $ 340,826 $ 180,677 $ 97,072 $ 68,232 $ 39,331 $ 56,053 $ 246,568 $ 1,028,759 Special Mention 530 15,587 — 237 251 84 876 17,565 Substandard — 371 2,605 3,594 1,436 3,217 339 11,562 Substandard Impaired — 196 4,561 3,694 1,371 1,520 128 11,470 Doubtful — — — — — — — — Total $ 341,356 $ 196,831 $ 104,238 $ 75,757 $ 42,389 $ 60,874 $ 247,911 $ 1,069,356 Consumer Risk Ratings: Pass $ 45,063 $ 31,342 $ 26,194 $ 17,300 $ 9,979 $ 16,019 $ 25,418 $ 171,315 Special Mention — 24 431 37 167 3 1,199 1,861 Substandard — — 18 — 17 — 223 258 Substandard Impaired — — 92 23 74 118 434 741 Doubtful — — — — — — — — Total $ 45,063 $ 31,366 $ 26,735 $ 17,360 $ 10,237 $ 16,140 $ 27,274 $ 174,175 Paycheck Protection Program Risk Ratings: Pass $ 87,036 $ 4,071 $ — $ — $ — $ — $ — $ 91,107 Total $ 87,036 $ 4,071 $ — $ — $ — $ — $ — $ 91,107 Consolidated Risk Ratings: Pass $ 1,562,502 $ 716,570 $ 729,697 $ 549,567 $ 408,614 $ 1,125,909 $ 672,256 $ 5,765,115 Special Mention 530 22,138 6,645 993 925 18,430 2,607 52,268 Substandard — 5,487 5,632 26,800 6,701 22,515 648 67,783 Substandard Impaired — 5,460 9,968 4,288 6,782 14,363 3,073 43,934 Doubtful — — — — — — — — Total $ 1,563,032 $ 745,584 $ 751,942 $ 581,648 $ 423,022 $ 1,181,217 $ 678,584 $ 5,925,029 Troubled Debt Restructured Loans The Company’s TDR concessions granted to certain borrowers may include interest rate reductions, an extension of the amortization period and/or converting the loan to interest only for a limited period of time. The Company typically does not provide forgiveness of principal as a concession. Loan modifications are not reported in calendar years after modification if the loans were modified at an interest rate equal to the yields of new loan originations with comparable risk and the loans are performing based on the terms of the restructuring agreements. There were nine loans totaling $0.9 million modified in TDRs in 2022, 12 loans totaling $0.8 million in 2021, and 10 loans totaling $0.7 million in 2020. The TDRs resulted in a specific allowance for credit losses of $0.2 million as of December 31, 2022 and 2021. During the year ended December 31, 2022, there were three defaults totaling $41 thousand on loans that had been modified in TDRs within the preceding twelve months compared to three defaults totaling $0.2 million in 2021. The Company considers a loan to have defaulted when it becomes 90 days or more delinquent under the modified terms, has been transferred to nonaccrual status, is charged off or has been transferred to other real estate owned. For loans measured based on the present value of expected future cash flows, $37 thousand, $16 thousand and $0.1 million for the years ended December 31, 2022, 2021, and 2020, respectively, was included in interest income and represents the change in present value attributable to the passage of time.

Allowance for Credit Losses

Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2022
Receivables [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses Activity in the allowance for credit losses is summarized as follows: For the Year Ended December 31, 2022 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 2,751 $ 518 $ 3,127 $ — $ 68 $ — $ 6,464 Commercial real estate - owner occupied 8,579 38 (2,566) — — — 6,051 Commercial real estate - non-owner occupied 36,617 880 5,871 (179) 69 — 43,258 Residential real estate 12,811 229 16,284 (84) 393 (28) 29,605 Commercial and financial 19,744 1,699 (5,367) (1,233) 807 (2) 15,648 Consumer 2,813 1,911 8,834 (1,415) 733 (7) 12,869 Total $ 83,315 $ 5,275 $ 26,183 $ (2,911) $ 2,070 $ (37) $ 113,895 For the Year Ended December 31, 2021 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 4,920 $ — $ (2,300) $ — $ 133 $ (2) $ 2,751 Commercial real estate - owner occupied 9,868 — (1,289) — — — 8,579 Commercial real estate - non-owner occupied 38,266 1,327 (1,664) (1,327) 15 — 36,617 Residential real estate 17,500 — (5,822) (57) 1,196 (6) 12,811 Commercial and financial 18,690 1,719 2,292 (3,987) 1,030 — 19,744 Consumer 3,489 — (638) (727) 697 (8) 2,813 Total $ 92,733 $ 3,046 $ (9,421) $ (6,098) $ 3,071 $ (16) $ 83,315 For the Year Ended December 31, 2020 (In thousands) Beginning Impact of Adoption of ASC 326 Initial Allowance on PCD Loans Acquired During the Period Provision for Loan Losses 1 Charge- Recoveries TDR Ending Construction and land development $ 1,842 $ 1,479 $ 87 $ 1,399 $ — $ 114 $ (1) $ 4,920 Commercial real estate - owner occupied 5,361 80 1,161 3,632 (310) 18 (74) 9,868 Commercial real estate - non-owner occupied 7,863 9,341 2,236 18,966 (177) 37 — 38,266 Residential real estate 7,667 5,787 124 3,840 (240) 350 (28) 17,500 Commercial and financial 9,716 3,677 2,643 8,329 (7,091) 1,416 — 18,690 Consumer 2,705 862 28 1,613 (2,024) 316 (11) 3,489 Total $ 35,154 $ 21,226 $ 6,279 $ 37,779 $ (9,842) $ 2,251 $ (114) $ 92,733 1 In addition, the Company recorded a $0.4 million provision to establish a valuation allowance on accrued interest receivable. 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. In the implementation of CECL at January 1, 2020 and through June 30, 2022, the Company utilized a top-down allowance model based on an analysis of the probability of default (“PD”) and loss given default (“LGD”) to determine an expected loss by loan segment. During the third quarter of 2022, the Company transitioned to a tool that calculates the quantitative portion of expected credit losses using a discounted cash flow methodology for its commercial loans and using a loss rate methodology for its consumer loans. The new tool being utilized produces more granular results of expected loan loss, allows for greater differentiation and a more efficient process. This change did not result in a material impact to the Company’s financial statements. As of December 31, 2022 and 2021, 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 for the 2022 analysis the 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 persistent 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 year ended December 31, 2022. In the Construction and Land Development segment, the increase in the allowance during the year is primarily attributed to higher loan balances. 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 decrease in the allowance reflects the transition to a discounted cash flow approach which, while continuing to consider relevant macroeconomic forecast variables, also considers loan-specific available collateral. The decrease is partially offset by increases due to loan growth. 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 increase in the allowance reflects higher loan balances, partially offset by the impact of transitioning from a portfolio level estimate to a discounted cash flow approach, utilizing macroeconomic variables specific to the loan segment. 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 reflects both higher loan balances and deterioration in the economic forecast, including the transition to a loss rate tool for estimating credit losses, utilizing macroeconomic variables specific to the loan segment. 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 attributed to the transition from a portfolio level estimate to a discounted cash flow tool, utilizing macroeconomic variables specific to the loan segment. The decrease was partially offset by the impact of higher loan balances. 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 increase in the reserve during the year reflects higher loan balances and an increasing likelihood of economic recession reflected within the forecast. Balances outstanding under the Paycheck Protection Program are guaranteed by the U.S. government and have not been assigned a reserve. The allowance for credit losses is comprised of specific allowances for loans individually evaluated and general allowances for loans grouped into loan pools based on similar characteristics, which are collectively evaluated. The Company’s loan portfolio and related allowance at December 31, 2022 and 2021 is shown in the following tables. 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 1,336,469 13,009 1,348,636 15,648 Consumer 426 362 286,161 12,507 286,587 12,869 Paycheck Protection Program — — 4,590 — 4,590 — Total $ 31,514 $ 3,547 $ 8,113,210 $ 110,348 $ 8,144,724 $ 113,895 December 31, 2021 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ 271 $ 92 $ 230,553 $ 2,659 $ 230,824 $ 2,751 Commercial real estate - owner occupied 5,131 419 1,192,643 8,160 1,197,774 8,579 Commercial real estate - non-owner occupied 5,905 27 1,730,534 36,590 1,736,439 36,617 Residential real estate 16,345 646 1,409,009 12,165 1,425,354 12,811 Commercial and financial 11,470 2,885 1,057,886 16,859 1,069,356 19,744 Consumer 741 685 173,434 2,128 174,175 2,813 Paycheck Protection Program — — 91,107 — 91,107 — Total $ 39,863 $ 4,754 $ 5,885,166 $ 78,561 $ 5,925,029 $ 83,315

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2022
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 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. As of December 31, 2021, the interest rate swaps had an aggregate notional value of $175.4 million with a fair value of $8.0 million. The weighted average maturity was 6.7 years at both December 31, 2022 and 2021. 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. 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 December 31, 2022 and 2021, the interest rate floors had a fair value of $2 thousand and $0.3 million, respectively, and are recorded in Other Assets in the consolidated balance sheet. For the years ended December 31, 2022 and 2021, the Company recognized losses through other comprehensive income of $0.3 million and $0.7 million, respectively, and reclassified $0.4 million and $0.2 million, respectively, out of accumulated other comprehensive income and into interest income. Over the next 12 months the Company expects to reclassify $0.5 million from accumulated other comprehensive income into interest income related to these agreements. (In thousands) Notional Amount Fair Value Balance Sheet Category December 31, 2022 Back-to-back swaps $ 312,808 $ 23,140 Other Assets and Other Liabilities Interest rate floors 300,000 2 Other Assets December 31, 2021 Back-to-back swaps $ 175,392 $ 8,022 Other Assets and Other Liabilities Interest rate floors 300,000 290 Other Assets

Bank Premises and Equipment

Bank Premises and Equipment	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Bank Premises and Equipment	Bank Premises and Equipment Bank premises and equipment consisted of the following: (In thousands) Cost Accumulated Net December 31, 2022 Premises (including land of $37,516) $ 138,447 $ (33,037) $ 105,410 Furniture and equipment 40,354 (28,872) 11,482 Total $ 178,801 $ (61,909) $ 116,892 December 31, 2021 Premises (including land of $23,359) $ 95,810 $ (30,913) $ 64,897 Furniture and equipment 34,044 (26,537) 7,507 Total $ 129,854 $ (57,450) $ 72,404

Goodwill and Acquired Intangibl

Goodwill and Acquired Intangible Assets	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Acquired Intangible Assets	Goodwill and Acquired Intangible Assets The following table presents changes in the carrying amount of goodwill: For the Year Ended December 31, (In thousands) 2022 2021 2020 Beginning of year $ 252,154 $ 221,176 $ 205,286 Changes from business combinations 228,165 30,978 15,890 Total $ 480,319 $ 252,154 $ 221,176 The Company performs an analysis for goodwill impairment annually in the fourth quarter or more frequently as considered necessary. The Company performed a qualitative goodwill assessment in the fourth quarter of 2022, and concluded that a quantitative goodwill impairment test was not necessary as it was not more likely-than-not that the fair value of the Company’s reporting unit was below the carrying amount. Based on the analyses performed, the Company concluded that goodwill was not impaired during the periods presented. Acquired intangible assets primarily consist of core deposit intangibles (“CDI”), which are intangible assets arising from the purchase of deposits separately or from bank acquisitions. The change in balance for CDI is as follows: For the Year Ended December 31, (In thousands) 2022 2021 2020 Beginning of year $ 12,998 $ 14,577 $ 18,305 Acquired CDI, including measurement period adjustments 67,388 3,454 2,129 Amortization expense (9,101) (5,033) (5,857) End of year $ 71,285 $ 12,998 $ 14,577 (In months) Remaining average amortization period for CDI 49 39 44 The gross carrying amount and accumulated amortization of the Company's CDI subject to amortization as of: December 31, 2022 December 31, 2021 (In thousands) Gross Accumulated Gross Accumulated Core deposit intangible $ 97,778 $ (26,493) $ 41,596 $ (28,598) The annual amortization expense for the Company's CDI for each of the five years subsequent to December 31, 2022 is $17.7 million, $13.4 million, $11.3 million, $9.4 million and $7.7 million, respectively. Certain customer relationships were acquired through the acquisition of Drummond and its insurance agency subsidiary. The value assigned to these relationships, $2.6 million, is being amortized on a straight line basis over 10 years. The carrying value of servicing rights retained from the sale of the guaranteed portion of Small Business Administration (“SBA”) loans totaled $1.7 million and $1.8 million at December 31, 2022 and December 31, 2021, respectively.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Borrowings	Borrowings A significant portion of the Company's short-term borrowings were comprised of securities sold under agreements to repurchase with overnight maturities: For the Year Ended December 31, (In thousands) 2022 2021 2020 Maximum amount outstanding at any month end $ 172,029 $ 124,101 $ 119,609 Weighted average interest rate at end of year 1.89 % 0.12 % 0.16 % Average amount outstanding $ 121,318 $ 113,881 $ 84,514 Weighted average interest rate during the year 0.81 % 0.12 % 0.33 % Securities sold under agreements to repurchase are accounted for as secured borrowings. For securities sold under agreements to repurchase, the Company would be obligated to provide additional collateral in the event of a significant decline in fair value of collateral pledged. Company securities pledged were as follows by collateral type and maturity as of: December 31, (In thousands) 2022 2021 2020 Fair value of pledged securities - overnight and continuous: Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 184,967 $ 134,577 $ 137,268 At December 31, 2022, the Company had available secured lines of credit of $2.4 billion, of which $150.0 million was outstanding from the Federal Home Loan Bank ("FHLB") at December 31, 2022. During 2022, the average interest rate on FHLB borrowings was 3.22% and the weighted average interest rate on balances outstanding at December 31, 2022 was 3.42%. The following table summarizes the Company's junior subordinated debentures and related trust preferred and common equity securities as of December 31, 2022: (In thousands) Description Issuance Date Acquisition Date 1 Maturity Date Junior Subordinated Debt Trust Preferred Securities Common Equity Securities Contractual Interest Rate Interest Rate at December 31, 2022 SBCF Capital Trust I 3/31/2005 n/a 3/31/2035 $ 20,619 $ 20,000 $ 619 3 month LIBOR +175bps 6.50% SBCF Statutory Trust II 12/16/2005 n/a 12/16/2035 20,619 20,000 619 3 month LIBOR +133bps 6.10% SBCF Statutory Trust III 6/29/2007 n/a 6/15/2037 12,372 12,000 372 3 month LIBOR +135bps 6.12% The BANKshares, Inc. Statutory Trust I 12/19/2002 10/1/2014 12/26/2032 5,155 5,000 155 3 month LIBOR +325bps 7.97% The BANKshares, Inc. Statutory Trust II 3/17/2004 10/1/2014 3/17/2034 4,124 4,000 124 3 month LIBOR +279bps 7.53% The BANKshares, Inc. Capital Trust I 12/15/2005 10/1/2014 12/15/2035 5,155 5,000 155 3 month LIBOR +139bps 6.08% Grand Bank Capital Trust I 10/29/2004 7/17/2015 10/29/2034 7,217 7,000 217 3 month LIBOR +198bps 6.71% $ 75,261 $ 73,000 $ 2,261 1 Acquired junior subordinated debentures were recorded at their acquisition date fair values, which collectively was $5.6 million lower than face value; this amount is being amortized into interest expense over the remaining term to maturity. Interest on the trust preferred securities is calculated on the basis of 3-month LIBOR plus spread and is re-set quarterly. The trust preferred securities may be redeemed without penalty, upon approval of the Federal Reserve or upon occurrence of certain events affecting their tax or regulatory capital treatment. The proceeds of the offering of trust preferred securities and common equity securities were used by SBCF Capital Trust I and SBCF Statutory Trust II to purchase the $41.2 million junior subordinated deferrable interest notes issued by the Company, and by SBCF Statutory Trust III to purchase the $12.4 million junior subordinated deferrable interest notes issued by the Company, all of which have terms substantially similar to the trust preferred securities. The Company has the right to defer payments of interest on the notes at any time or from time to time at the Company's election. Interest can be deferred for a period not longer than five years. If the Company elects to defer interest, it may not, with certain exceptions, declare or pay any dividends or distributions on its capital stock or purchase or acquire any of its capital stock. As of December 31, 2022, 2021 and 2020, all interest payments on trust preferred securities were current. Distributions on the trust preferred securities are payable quarterly. The Company has entered into agreements to guarantee the payments of distributions on the trust preferred securities and payments of redemption of the trust preferred securities. Under these agreements, the Company also agrees, on a subordinated basis, to pay expenses and liabilities of the Trusts other than those arising under the trust preferred securities. The obligations of the Company under the junior subordinated notes, the trust agreement establishing the Trusts, the guarantees and agreements as to expenses and liabilities, in aggregate, constitute a full and conditional guarantee by the Company of the Trusts' obligations under the trust preferred securities. On October 7, 2022, the Company obtained $12.3 million in subordinated debt through the acquisition of Apollo Bancshares, Inc. Contractual interest is paid on a semiannual basis on April 30 and October 30 of each year at a fixed 5.50% until April 30, 2025, at which point the rate converts to a floating rate of 3-month SOFR plus 533 basis points. The subordinated debt matures on October 30, 2030. As part of the acquisition, the Company recorded a fair value adjustment of $0.4 million, which is being amortized into interest expense over the remaining term.

Employee Benefits and Stock Com

Employee Benefits and Stock Compensation	12 Months Ended
	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Employee Benefits and Stock Compensation	Employee Benefits and Stock Compensation The Company’s defined contribution plan covers substantially all employees after one year of service and includes a matching benefit for employees who can elect to defer a portion of their compensation. In addition, amounts of compensation contributed by employees are matched on a percentage basis under the plan. The Company's contributions to this plan charged to operations were $3.5 million in 2022, $3.1 million in 2021, and $2.8 million in 2020. The Company, through its Compensation and Governance Committee of the board of directors (the “Compensation Committee”), offers equity compensation to employees and non-employee directors of Seacoast and Seacoast Bank in the form of various share-based awards, including stock options, restricted stock awards (“RSAs”), or restricted stock units (“RSUs”). The awards may vest over time, have certain performance based criteria, or both. Stock options are granted with an exercise price at least equal to the market price of the Company’s stock at the date of grant. The fair value of options granted is estimated on the date of grant using the Black-Scholes option-pricing model. Compensation cost is amortized on a straight-line basis over the vesting period. Vesting is determined by the Compensation Committee at the time of grant, generally over five years. The options have a maximum term of ten years. The fair value of RSAs and RSUs are estimated based on the price of the Company’s common stock on the date of grant. Compensation cost is measured straight-line for RSAs and ratably for RSUs over the vesting period of the awards and reversed for awards that are forfeited due to unfulfilled service or performance criteria. To the extent the Company has treasury shares available, stock options exercised or stock grants awarded may be issued from treasury shares. If treasury shares are insufficient, the Company can issue new shares. Vesting of share-based awards is immediately accelerated on death or disability of the recipient. The Compensation Committee may, at its discretion, accelerate vesting upon retirement or upon the event of a change-in-control. Awards are currently granted under the Seacoast 2021 Incentive Plan (“2021 Plan”), which shareholders approved on May 26, 2021 with 1,750,000 authorized shares for issuance, plus shares of underlying awards outstanding under the 2013 Incentive Plan (the “Prior Plan”) that thereafter terminate or expire unexercised or are cancelled, forfeited or lapse for any reason under the Prior Plan. The 2021 Plan was modified in August 2021 to authorize 356,497 shares for issuance related to options granted in the acquisition of Legacy Bank of Florida (“Legacy Bank”). The 2021 Plan was further modified in January 2022 to authorize 52,432 shares and 188,253 shares, respectively, for issuance related to options granted in the acquisitions of Business Bank of Florida, Corp. ("BBFC") and Sabal Palm Bancorp, Inc. ("Sabal Palm"). In October 2022, the 2021 Plan was further modified to authorize 274,373 shares for issuance related to options and warrants granted in the acquisition of Apollo Bancshares, Inc. ("Apollo"). The 2021 Plan expires on May 26, 2031. Upon adoption of the 2021 Plan, no further awards were granted under the Prior Plan, which remains in effect only so long as awards granted thereunder remain outstanding. In 2021, as part of the Legacy Bank acquisition, 356,497 options were granted to replace outstanding Legacy Bank options. These options had a weighted average exercise price of $16.70 and were fully vested upon acquisition. In accordance with ASC Topic 805, Business Combinations , the value of the replacement awards associated with pre-combination service, $4.7 million, was considered purchase consideration, and the value of the replacement awards associated with post-combination service, $0.9 million, was recognized as compensation expense in 2021. In 2022, as part of the acquisitions of BBFC, Sabal Palm and Apollo, 52,432, 188,253 and 274,373 options, respectively, were granted to replace outstanding options. These options had weighted average exercise prices of $26.63, $17.84 and $9.94, respectively, and were fully vested upon acquisition. Additionally, as part of the acquisition of Apollo, 37,240 warrants were granted to replace outstanding Apollo warrants. These warrants had a weighted average exercise price of $9.94 and were fully vested upon acquisition. The full value of the options and warrants issued through acquisitions in 2022, $10.4 million, was considered purchase consideration. The impact of share-based compensation on the Company’s financial results is presented below: For the Year Ended December 31, (In thousands) 2022 2021 2020 Share-based compensation expense 1 $ 11,155 $ 8,685 $ 7,304 Income tax benefit (2,827) (2,067) (1,737) 1 Excludes $10.4 million in 2022 and $4.7 million in 2021 associated with replacement awards granted in bank acquisitions. The total unrecognized compensation cost and the weighted-average period over which unrecognized compensation cost is expected to be recognized related to non-vested share-based compensation arrangements at December 31, 2022 is presented below: (In thousands) Unrecognized Weighted-Average Period Remaining (Years) Restricted stock awards $ 11,834 1.80 Restricted stock units 3,977 1.98 Stock options — — Total $ 15,811 1.85 Restricted Stock Awards RSAs are granted to various employees and vest over time, generally three years. Compensation cost of RSAs is based on the market value of the Company’s common stock at the date of grant and is recognized over the required service period on a straight-line basis. The Company’s accounting policy is to recognize forfeitures as they occur. A summary of the status of the Company’s non-vested RSAs as of December 31, 2022, and changes during the year then ended, is presented below: Restricted Weighted-Average Grant-Date Fair Value Non-vested at January 1, 2022 398,704 $ 26.68 Granted 422,745 33.08 Forfeited/Canceled (34,387) 29.88 Vested (253,787) 27.28 Non-vested at December 31, 2022 533,275 $ 31.26 Information regarding restricted stock awards during each of the following years is presented below: For the Year Ended December 31, 2022 2021 2020 Shares granted 422,745 218,695 379,869 Weighted-average grant date fair value $ 33.08 $ 35.08 $ 18.36 Fair value of awards vested 1 $ 6,923 $ 4,731 $ 3,745 1 Based on grant date fair value, in thousands. Restricted Stock Units RSUs allow the grantee to earn 0%-225% of the target award based on the Company's achievement of performance goals relating to average annual earnings per share growth and average annual return on average tangible equity relative to a group of peer companies, each measured over a three year period beginning with the year of grant. A summary of the status of the Company’s non-vested RSUs as of December 31, 2022, and changes during the year then ended, is presented below: Restricted Weighted-Average Grant-Date Fair Value Non-vested at January 1, 2022 285,221 $ 26.71 Granted 121,025 34.11 Forfeited/Canceled (20,824) 26.29 Vested (75,388) 30.57 Non-vested at December 31, 2022 310,034 $ 28.69 Information regarding restricted stock units during each of the following years is presented below: For the Year Ended December 31, 2022 2021 2020 Shares granted 121,025 103,073 171,287 Weighted-average grant date fair value $ 34.11 $ 35.24 $ 17.29 Fair value of awards vested 1 $ 2,305 $ 1,936 $ 2,962 1 Based on grant date fair value, in thousands. Stock Options The fair value of options and warrants granted is estimated on the date of grant using the Black-Scholes options-pricing model. In 2022 and 2021, 552,298 and 356,497, respectively, of options to purchase shares of Seacoast stock were granted to optionholders of acquired entities in accordance with the terms of the merger agreements. The Company issued no stock options in 2020. For the Year Ended December 31, 2022 2021 2020 Risk-free interest rates 2.21 % 0.12 % n/a Expected dividend yield 1.95 % 1.65 % n/a Expected volatility 32.09 % 36.87 % n/a Expected lives (years) 1.0 1.0 n/a A summary of the Company’s stock options as of December 31, 2022, and changes during the year then ended, is presented below: Options Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term (Years) Aggregate Outstanding at January 1, 2022 810,180 $ 22.02 Granted 553,803 14.28 Exercised (522,126) 13.05 Forfeited (4,235) 30.16 Outstanding at December 31, 2022 837,622 $ 21.72 3.25 $ 7,936 Exercisable at December 31, 2022 837,622 $ 21.72 3.25 $ 7,936 The following table presents information related to stock options during each of the following years: For the Year Ended December 31, 2022 2021 2020 Options granted 553,803 356,497 n/a Weighted-average grant date fair value $ 14.28 $ 16.70 n/a Intrinsic value of stock options exercised, in thousands 8,860 5,808 830 The following table presents information related to stock options as of December 31, 2022: Range of Exercise Prices Options Remaining Options Weighted $5.88 to $14.82 323,241 1.40 323,241 $ 11.83 $15.80 to $28.69 332,939 4.19 332,939 26.19 $29.38 to $35.78 181,442 4.83 181,442 31.15 Total 837,622 3.25 837,622 $ 21.72 Employee Stock Purchase Plan The Employee Stock Purchase Plan (“ESPP”), as amended, was approved by shareholders on April 25, 1989, and additional shares were authorized for issuance by shareholders in 2009, 2013, and 2021. Under the ESPP, the Company is authorized to issue up to 800,000 common shares of the Company’s common stock to eligible employees of the Company. These shares may be purchased by employees at a price equal to 95% of the fair market value of the shares on the purchase date. Employee contributions to the ESPP are made through payroll deductions. 2022 2021 2020 ESPP shares purchased 20,972 14,834 19,713 Weighted-average employee purchase price $ 30.76 $ 32.43 $ 20.68

Lease Commitments

Lease Commitments	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Lease Commitments	Lease Commitments The Company is the lessee in various noncancellable operating leases for land, buildings, and equipment. Certain leases contain provisions for variable lease payments that are linked to the consumer price index. Lease cost consists of: For the Year Ended December 31, (In thousands) 2022 2021 2020 Operating lease cost $ 8,111 $ 5,872 $ 5,738 Variable lease cost 1,599 996 1,325 Short-term lease cost 427 564 497 Sublease income (704) (601) (684) Total lease cost $ 9,433 $ 6,831 $ 6,876 The following table provides supplemental information related to leases: As of and For the Year Ended December 31, (In thousands, except for weighted average data) 2022 2021 Operating lease right-of-use assets $ 47,500 $ 35,256 Operating lease liabilities 50,770 38,330 Cash paid during the year for amounts included in the measurement of operating lease liabilities 16,508 11,117 Right-of-use assets recorded during the year in exchange for new or renewed operating lease obligations 5,305 12,459 Right-of-use assets obtained during the year through bank acquisition 14,597 2,606 Weighted average remaining lease term for operating leases 8.0 years 8.3 years Weighted average discount rate for operating leases 4.64 % 4.25 % The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If, at lease inception, the Company considers the exercising of a renewal option to be reasonably certain, the Company includes the extended term in the calculation of the lease liability. Maturities of lease liabilities as of December 31, 2022 are as follows: (In thousands) 2023 $ 8,880 2024 8,646 2025 8,035 2026 7,045 2027 6,355 Thereafter 21,205 Total undiscounted cash flows 60,166 Less: Net present value adjustment (9,396) Total $ 50,770

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes is as follows: For the Year Ended December 31, (In thousands) 2022 2021 2020 Current Federal $ 2,770 $ 23,661 $ 21,688 State (1,266) 3,882 4,471 Deferred Federal 23,710 6,800 (2,697) State 6,415 (8) (644) $ 31,629 $ 34,335 $ 22,818 The difference between the total expected tax expense (computed by applying the U.S. Federal tax rate of 21% to pretax income) and the reported income tax provision relating to income before income taxes is as follows: For the Year Ended December 31, (In thousands) 2022 2021 2020 Tax rate applied to income before income taxes $ 29,009 $ 33,335 $ 21,122 Increase (decrease) resulting from the effects of: Tax law change — — (375) Nondeductible acquisition costs 924 419 199 Tax exempt interest on loans, obligations of states and political subdivisions and bank owned life insurance (1,341) (1,276) (1,110) State income taxes (1,081) (813) (804) Tax credit investments (406) (213) (72) Stock compensation (992) (1,239) (111) Executive compensation disallowance 402 253 — Other (36) (5) 142 Federal tax provision 26,479 30,461 18,991 State tax provision 5,150 3,874 3,827 Total income tax provision $ 31,629 $ 34,335 $ 22,818 Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The following is a summary of the significant components of the Company's deferred tax assets and liabilities as of: December 31, (In thousands) 2022 2021 Allowance for credit losses $ 31,097 $ 22,686 Other real estate owned 591 52 Accrued stock compensation 2,931 2,323 Federal tax loss carryforward 3,150 2,138 State tax loss carryforward 1,117 1,226 Lease liabilities 12,868 9,399 Net unrealized securities losses 59,392 2,287 Deferred compensation 2,766 3,276 Accrued interest and fee income 16,035 — Other 1,755 477 Gross deferred tax assets 131,702 43,864 Less: Valuation allowance — — Deferred tax assets net of valuation allowance 131,702 43,864 Core deposit base intangible (18,767) (3,134) Accrued interest and fee income — (1,660) Premises and equipment (2,214) (776) Right of use assets (12,039) (8,645) Other (4,225) (2,328) Gross deferred tax liabilities (37,245) (16,543) Net deferred tax assets $ 94,457 $ 27,321 Included in the table above is the effect of temporary differences associated with the Company's investments in debt securities accounted for under ASC Topic 320, for which no deferred tax expense or benefit was recognized. These items are recorded as Accumulated Other Comprehensive Income in the shareholders' equity section of the consolidated balance sheet. In 2022, unrealized losses of $247.4 million resulted in a deferred tax asset of $59.4 million. In 2021, unrealized losses of $9.3 million resulted in a deferred tax asset of $2.3 million. At December 31, 2022, the Company's net deferred tax assets (“DTAs”) of $94.5 million consisted of $76.8 million of net U.S. federal DTAs and $17.7 million of net state DTAs. At December 31, 2021, the Company's net DTAs of $27.3 million consisted of $20.8 million of U.S. federal DTAs and $6.5 million of net state DTAs. Management assesses the necessity of a valuation allowance recorded against DTAs at each reporting period. The determination of whether a valuation allowance for net DTAs is appropriate is subject to considerable judgment and requires an evaluation of all positive and negative evidence. Based on an assessment of all of the evidence, including favorable trending in asset quality and certainty regarding the amount of future taxable income that the Company forecasts, management concluded that it was more likely than not that its net DTAs will be realized based upon future taxable income. Management's confidence in the realization of projected future taxable income is based upon analysis of the Company's risk profile and its trending financial performance, including credit quality. The Company believes it can reasonably predict future results of operations that result in taxable income at sufficient levels over the future period of time that the Company has available to realize its net DTA. A valuation allowance could be required in future periods based on the assessment of positive and negative evidence. Management's conclusion at December 31, 2022 that it is more likely than not that the net DTAs of $94.5 million will be realized is based upon estimates of future taxable income that are supported by internal projections which consider historical performance, various internal estimates and assumptions, as well as certain external data, all of which management believes to be reasonable although inherently subject to judgment. If actual results differ significantly from the current estimates of future taxable income, even if caused by adverse macro-economic conditions, a valuation allowance may need to be recorded for some or all of the Company's DTAs. The establishment of a DTA valuation allowance could have a material adverse effect on the Company's financial condition and results of operations. Management expects to realize the $94.5 million in net DTAs well in advance of the statutory carryforward period. At December 31, 2022, approximately $3.1 million of DTAs related to federal net operating losses which will expire in annual installments beginning in 2029 through 2032. Additionally, $1.1 million of the DTAs related to state net operating losses which will expire in annual installments beginning in 2029 through 2034. Remaining DTAs are not related to net operating losses or credits and therefore, have no expiration date. The Company recognizes interest and penalties, as appropriate, as part of the provisioning for income taxes. No interest or penalties were accrued at December 31, 2022. In accordance with ASC Topic 718, Compensation – Stock Compensation, the Company recognized $1.1 million, $0.9 million and $0.1 million in 2022, 2021, and 2020, respectively, of discrete tax benefits related to share-based compensation. In accordance with ASC Topic 323, Investments-Equity Method and Joint Ventures, amortization of the Company's low-income housing credit investments of $2.5 million, $1.6 million and $0.9 million was reflected as income tax expense for the years ended December 31, 2022, 2021, and 2020, respectively. The amounts of affordable housing tax credits, amortization and tax benefits recorded as income tax expense for the year ended December 31, 2022 were $2.0 million, $2.5 million, and $1.0 million, respectively. The amounts of affordable housing tax credits, amortization and tax benefits recorded as income tax expense for the year ended December 31, 2021 were $1.2 million, $1.6 million and $0.7 million, respectively, and for the year ended December 31, 2020 were $0.8 million, $0.9 million and $0.2 million, respectively. The carrying value of the affordable housing credit investments was $27.3 million and $30.1 million at December 31, 2022 and 2021, respectively, of which $17.6 million and $23.2 million, respectively, was unfunded. The Company has no unrecognized income tax benefits or provisions due to uncertain income tax positions. No federal or state income tax return examinations are currently in process. The Company does not expect to record or realize any material unrecognized tax benefits during 2022. The following are the major tax jurisdictions in which the Company operates and the earliest tax year, exclusive of the impact of the net operating loss carryforwards, subject to examination: Jurisdiction Tax Year United States of America 2019 Florida 2019 In September 2019, the State of Florida announced a reduction in the corporate income tax rate from 5.5% to 4.458% for the years 2019, 2020 and 2021. This change resulted in additional income tax expense of $1.1 million upon the write down in 2019 of deferred tax assets affected by the change. During 2021, the State of Florida announced a temporary further reduction in the corporate income tax rate from 4.458% to 3.535%, retroactive to the beginning of 2021. The tax rate increased to 5.5% effective January 1, 2022, resulting in a tax benefit of $0.8 million which was recognized in 2021 upon the adjustment of the value of deferred tax assets affected by the change. On March 27, 2020, the CARES Act was enacted, and Section 2303(b) of this act provided the Company with an opportunity to carry back net operating losses arising from 2018, 2019 and 2020 to the prior five tax years. Such NOLs were previously valued at the current federal corporate income tax rate of 21%. However, the provisions of the CARES Act provide for NOL carryback claims to be calculated based on a rate of 35%, which was the federal corporate tax rate in effect for many of the carryback years. Consequently, for the year ended December 31, 2020, the Company filed amended tax returns and recorded the resulting benefit reflecting taxes recoverable at the 35% tax rate. This resulted in the recognition in 2020 of an additional $0.4 million income tax benefit on the Company's Consolidated Statements of Income.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Required Regulatory Capital The Company is subject to various regulatory capital requirements administered by the Federal banking agencies. Failure to meet the minimum capital requirements can initiate certain mandatory and possible additional discretionary actions by the regulators, which could have a direct material impact on the financial statements. These requirements involve quantitative measures of assets, liabilities and certain off-balance sheet items calculated pursuant to regulatory guidance. The Company's capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios of total, Tier 1 capital and common equity Tier 1 capital to risk-weighted assets and of Tier 1 capital to average assets, all as defined in the regulations. At December 31, 2022 and 2021, the Company and Seacoast Bank, its wholly-owned banking subsidiary, were both considered “well capitalized” based on the applicable U.S. regulatory capital ratio requirements as reflected in the table below: Minimum to meet Minimum for Capital Adequacy Purpose 1 (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Seacoast Banking Corporation of Florida (Consolidated) At December 31, 2022: Total Risk-Based Capital Ratio (to risk-weighted assets) $ 1,454,168 15.79 % n/a n/a $ 736,709 ≥ 8.00 % Tier 1 Capital Ratio (to risk-weighted assets) 1,361,832 14.79 n/a n/a 552,532 ≥ 6.00 Common Equity Tier 1 Capital Ratio (to risk-weighted assets) 1,277,295 13.87 n/a n/a 414,399 ≥ 4.50 Leverage Ratio (to adjusted average assets) 1,361,832 11.46 n/a n/a 475,134 ≥ 4.00 At December 31, 2021: Total Risk-Based Capital Ratio (to risk-weighted assets) $ 1,200,885 18.21 % n/a n/a $ 527,630 ≥ 8.00 % Tier 1 Capital Ratio (to risk-weighted assets) 1,147,306 17.40 n/a n/a 395,723 ≥ 6.00 Common Equity Tier 1 Capital Ratio (to risk-weighted assets) 1,075,656 16.31 n/a n/a 296,792 ≥ 4.50 Leverage Ratio (to adjusted average assets) 1,147,306 11.68 n/a n/a 392,763 ≥ 4.00 Seacoast National Bank (A Wholly Owned Bank Subsidiary) At December 31, 2022: Total Risk-Based Capital Ratio (to risk-weighted assets) $ 1,330,836 14.47 % $ 919,904 ≥ 10.00 % $ 735,923 ≥ 8.00 % Tier 1 Capital Ratio (to risk-weighted assets) 1,238,500 13.46 735,923 ≥ 8.00 551,942 ≥ 6.00 Common Equity Tier 1 Capital Ratio (to risk-weighted assets) 1,238,496 13.46 597,938 ≥ 6.50 413,957 ≥ 4.50 Leverage Ratio (to adjusted average assets) 1,238,500 10.44 620,398 ≥ 5.00 496,318 ≥ 4.00 At December 31, 2021: Total Risk-Based Capital Ratio (to risk-weighted assets) $ 1,099,439 16.68 % $ 658,819 ≥ 10.00 % $ 527,055 ≥ 8.00 % Tier 1 Capital Ratio (to risk-weighted assets) 1,045,860 15.86 527,055 ≥ 8.00 395,291 ≥ 6.00 Common Equity Tier 1 Capital Ratio (to risk-weighted assets) 1,045,856 15.86 428,232 ≥ 6.50 296,468 ≥ 4.50 Leverage Ratio (to adjusted average assets) 1,045,860 10.65 490,798 ≥ 5.00 392,638 ≥ 4.00 1 Excludes the Basel III capital conservation buffer of 2.5%, which if not exceeded may constrain dividends, equity repurchases and compensation. n/a - not applicable. Common Stock The Company has reserved 800,000 common shares for issuance in connection with an employee stock purchase plan and 1,750,000 common shares for issuance in connection with an employee stock-based incentive plan. Holders of common stock are entitled to one vote per share on all matters presented to shareholders as provided in the Company’s Articles of Incorporation.

Seacoast Banking Corporation of

Seacoast Banking Corporation of Florida (Parent Company Only) Financial Information	12 Months Ended
	Dec. 31, 2022
Condensed Financial Information Disclosure [Abstract]
Seacoast Banking Corporation of Florida (Parent Company Only) Financial Information	Seacoast Banking Corporation of Florida (Parent Company Only) Financial Information Balance Sheets December 31, (In thousands) 2022 2021 Assets Cash $ 58 $ 57 Securities purchased under agreement to resell with subsidiary bank, maturing within 30 days 111,698 98,398 Investment in subsidiaries 1,578,786 1,286,478 Other assets 2,335 1,140 $ 1,692,877 $ 1,386,073 Liabilities and Shareholders' Equity Subordinated debt $ 84,533 $ 71,646 Other liabilities 673 3,795 Shareholders' equity 1,607,671 1,310,632 $ 1,692,877 $ 1,386,073 Statements of Income Year Ended December 31, (In thousands) 2022 2021 2020 Income Interest/other $ 897 $ 167 $ 270 Dividends from subsidiary Bank 48,424 47,684 20,230 Total income 49,321 47,851 20,500 Interest expense 3,090 1,683 2,236 Other expenses 1,023 765 838 Total expenses 4,113 2,448 3,074 Income before income taxes and equity in undistributed income of subsidiaries 45,208 45,403 17,426 Income tax benefit (675) (481) (589) Income before equity in undistributed income of subsidiaries 45,883 45,884 18,015 Equity in undistributed income of subsidiaries 60,624 78,519 59,749 Net income $ 106,507 $ 124,403 $ 77,764 Statements of Cash Flows Year Ended December 31, (In thousands) 2022 2021 2020 Cash flows from operating activities Adjustments to reconcile net income to net cash provided Net Income $ 106,507 $ 124,403 $ 77,764 Equity in undistributed income of subsidiaries (60,624) (78,519) (59,749) Net (increase) decrease in other assets (13,823) (489) 1,772 Net increase in other liabilities 499 400 256 Net cash provided by operating activities 32,559 45,795 20,043 Cash flows from investing activities Net cash from bank acquisitions 17,610 — (1,462) Net advances with subsidiary (13,300) (28,324) (17,095) Net cash provided by (used in) investment activities 4,310 (28,324) (18,557) Cash flows from financing activities Dividends paid (41,242) (22,506) — Stock based employment benefit plans 4,374 5,022 (1,486) Net cash used in financing activities (36,868) (17,484) (1,486) Net change in cash 1 (13) — Cash at beginning of year 57 70 70 Cash at end of year $ 58 $ 57 $ 70 Supplemental disclosure of cash flow information: Cash paid during the period for interest $ 2,890 $ 1,441 $ 1,992

Contingent Liabilities and Comm

Contingent Liabilities and Commitments with Off-Balance Sheet Risk	12 Months Ended
	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities and Commitments with Off-Balance Sheet Risk	Contingent Liabilities and Commitments with Off-Balance Sheet Risk The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial condition, operating results or cash flows. The Company's subsidiary bank is party to financial instruments with off balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit, and limited partner equity commitments. The subsidiary bank’s exposure to credit loss in the event of non-performance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contract or notional amount of those instruments. The subsidiary bank uses the same credit policies in making commitments and standby letters of credit as they do for on balance sheet instruments. Unfunded commitments for the Company as of: December 31, (In thousands) 2022 2021 Contract or Notional Amount Financial instruments whose contract amounts represent credit risk: Commitments to extend credit $ 2,814,924 $ 1,980,338 Standby letters of credit and financial guarantees written: Secured 19,744 12,091 Unsecured 3,191 1,189 Unfunded limited partner equity commitment 26,761 36,393 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Commitments include home equity lines, commercial and consumer lines of credit and construction loans. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The subsidiary bank evaluates each customer's creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the bank upon extension of credit, is based on management's credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, equipment, and commercial and residential real estate. Standby letters of credit are conditional commitments issued by the subsidiary bank to guarantee the performance of a customer to a third party. These instruments have fixed termination dates and most end without being drawn; therefore, they do not represent a significant liquidity risk. Those guarantees are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing, and similar transactions. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The subsidiary bank holds collateral supporting these commitments for which collateral is deemed necessary. Collateral held for secured standby letters of credit at December 31, 2022 totaled $29.9 million. Unfunded limited partner equity commitments at December 31, 2022 totaled $26.8 million that the Company has committed to small business investment companies under the SBIC Act to be used to provide capital to small businesses and entities that provide low income housing tax credits.

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2022
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 December 31, 2022 and December 31, 2021 included: Fair Value Quoted Prices in Significant Other Significant Other (In thousands) Measurements Level 1 Level 2 Level 3 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 $ — At December 31, 2021 Financial Assets Available-for-sale debt securities 1 $ 1,644,319 $ 197 $ 1,644,122 $ — Derivative financial instruments 2 8,312 — 8,312 — Loans held for sale 2 31,791 — 31,791 — Loans 3 8,443 — 1,558 6,885 Other real estate owned 4 13,618 — — 13,618 Equity securities 5 9,316 9,316 — — Financial Liabilities Derivative financial instruments 2 8,022 — 8,022 — 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. 4 Fair value is measured on a nonrecurring basis in accordance with ASC Topic 360. 5 An investment in shares of a mutual fund that invests 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 consist of interest rate floors designated as cash flow hedges. 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 credit worthiness of the counterparties. Interest rate floors designated as cash flow hedges are classified within Level 2. 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 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 contractual terms of the loan in accordance with Company policy on loans held for investment. None of the loans are 90 days or more past due or on nonaccrual as of December 31, 2022 and 2021. The aggregate fair value and contractual balance of loans held for sale as of December 31, 2022 and 2021 is as follows: December 31, (In thousands) 2022 2021 Aggregate fair value $ 3,151 $ 31,791 Contractual balance 3,071 30,963 Excess 80 828 Loans : Loans carried at fair value consist of collateral-dependent real estate loans. Fair value is based on recent real estate appraisals less estimated costs of sale. For these loans, 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 December 31, 2022, capitalization rates utilized to determine fair value of the underlying collateral averaged approximately 6.7%. 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. As such, the fair value of these loans is considered level 3 in the fair value hierarchy. Collateral-dependent loans measured at fair value totaled $10.2 million with a specific reserve of $2.9 million at December 31, 2022, compared to $13.1 million with a specific reserve of $4.7 million at December 31, 2021. 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 level 2. 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. During the year ended December 31, 2022, two of the three properties held in OREO at the beginning of the year were sold. Properties remaining in OREO at December 31, 2022 are valued based on appraisals using a market approach. 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. There were no such transfers during the twelve months ended December 31, 2022 and 2021. The carrying amount and fair value of the Company's other significant financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of December 31, 2022 and December 31, 2021 is as follows: Carrying Quoted Prices in Significant Other Significant Other (In thousands) Amount Level 1 Level 2 Level 3 At December 31, 2022 Financial Assets Held-to-maturity debt securities 1 $ 747,408 $ — $ 617,741 $ — Time deposits with other banks 3,236 — 2,989 — Loans, net 8,022,316 — — 7,845,375 Financial Liabilities Deposits 9,981,595 — — 9,976,125 Federal Home Loan Bank (FHLB) borrowings 150,000 — — 149,450 Subordinated debt 84,533 — 82,226 — At December 31, 2021 Financial Assets Held-to-maturity debt securities 1 $ 638,640 $ — $ 627,398 $ — Loans, net 5,833,271 — — 5,907,447 Financial Liabilities Deposits 8,067,589 — — 8,067,995 Subordinated debt 71,646 — 69,348 — 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 agreement 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 December 31, 2022 and December 31, 2021: Loans : Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial, mortgage, etc. Each loan category is further segmented into fixed and adjustable rate interest terms and by 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	12 Months Ended
	Dec. 31, 2022
Business Combinations [Abstract]
Business Combinations	Business Combinations 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 cost through economies of scale, and positively affect the Company’s operating results. 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 $90.2 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 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. (In thousands) Measured October 7, 2022 Assets: Cash and cash equivalents $ 41,001 Investment securities 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 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 49,756 46,326 Consumer 11,307 11,055 PPP loans 369 369 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 definitive agreement, 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 $103.5 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. (In thousands) Measured October 7, 2022 Assets: Cash and cash equivalents $ 31,805 Investment securities 327,852 Loans 544,694 Bank premises and equipment 29,370 Core deposit and other 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 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 definitive 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 9,376 9,321 Consumer 59 61 PPP loans 1,959 1,959 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) January 3, 2022 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 definitive 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 17,797 17,501 Consumer 233 232 PPP loans 3,312 3,312 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 of Legacy Bank of Florida On August 6, 2021, the Company completed its acquisition of Legacy Bank of Florida (“Legacy Bank”). Prior to the acquisition, Legacy Bank operated five branches in Broward and Palm Beach counties. 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 Legacy Bank. Under the terms of the definitive agreement, each share of Legacy Bank common stock was converted into the right to receive 0.1703 share of Seacoast common stock. (In thousands, except per share data) August 6, 2021 Number of Legacy Bank common shares outstanding 15,778 Per share exchange ratio 0.1703 Number of shares of SBCF common stock issued 2,687 Multiplied by common stock price per share on August 6, 2021 $ 32.19 Value of SBCF common stock issued $ 86,487 Cash paid for fractional shares 7 Fair value of Legacy Bank options converted 4,736 Total purchase price $ 91,230 The acquisition of Legacy Bank was accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations . The Company recognized goodwill of $31.0 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 Legacy Bank acquisition, options were granted to replace outstanding Legacy Bank options. These options were fully vested upon acquisition. In accordance with ASC Topic 805, Business Combinations , the value of the replacement awards associated with pre-combination service, $4.7 million, was considered purchase consideration, and the value of the replacement awards associated with post-combination service, $0.9 million, was recognized as compensation expense in 2021. (In thousands) Measured Assets: Cash $ 98,107 Investment securities 992 Loans 477,215 Bank premises and equipment 2,577 Core deposit intangibles 3,454 Goodwill 30,978 Other assets 15,532 Total assets $ 628,855 Liabilities: Deposits 494,921 Other liabilities 42,705 Total liabilities $ 537,626 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. August 6, 2021 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 37,558 $ 36,651 Commercial real estate - owner-occupied 35,765 35,363 Commercial real estate - non owner-occupied 241,322 237,091 Residential real estate 71,118 70,541 Commercial and financial 61,274 58,324 Consumer 647 647 PPP loans 38,598 38,598 Total acquired loans $ 486,282 $ 477,215 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) August 6, 2021 Book balance of loans at acquisition $ 66,371 Allowance for credit losses at acquisition (3,046) Non-credit related discount (736) Total PCD loans acquired $ 62,589 The acquisition of Legacy Bank resulted in the addition of $11.2 million in allowance for credit losses, including the $3.0 million identified in the table above for PCD loans, and $8.2 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 Acquisition costs included in the Company's income statement for the years ended December 31, 2022, 2021 and 2020 were $27.9 million, $7.9 million and $9.1 million, respectively. Pro-Forma Information (unaudited) Pro-forma data as of 2022 and 2021 present information as if the acquisitions of Legacy Bank, BBFC, Sabal Palm, Apollo and Drummond occurred at the beginning of 2021. 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. Twelve Months Ended December 31, (In thousands, except per share data) 2022 2021 Net interest income $ 448,139 $ 406,482 Net income available to common shareholders 161,274 191,862 EPS - basic 2.53 2.68 EPS - diluted 2.51 2.67 2023 Acquisition Acquisition of Professional Holding Corp. On January 31, 2023, the Company completed its acquisition of Professional Holding Corp. (“Professional”). 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. Professional operated nine branches across South Florida with deposits of approximately $2.2 billion and loans of approximately $2.1 billion as of December 31, 2022. 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. The acquisition of Professional will be accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations . The Company’s calculation of the purchase price, including the value of Professional options converted, and the Company’s assessment of the fair value of assets acquired and liabilities assumed as of the acquisition date is incomplete at the time of this filing; therefore, certain disclosures have been omitted. The Company expects to recognize goodwill in this transaction, which is expected to be nondeductible for tax purposes.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
General	General: Seacoast Banking Corporation of Florida (“Seacoast” or the “Company”) is a single segment financial holding company with one operating subsidiary bank, Seacoast National Bank (“Seacoast Bank”). The Company provides integrated financial services including commercial and consumer banking, wealth management, and mortgage and insurance services to customers at 78 full-service branches across Florida, and through advanced mobile and online banking solutions. The consolidated financial statements include the accounts of Seacoast and all its majority-owned subsidiaries but exclude trusts created for the issuance of trust preferred securities. In consolidation, all significant intercompany accounts and transactions are eliminated.
Use of Estimates	Use of Estimates: The preparation of 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 determination of the allowance for credit losses, acquisition accounting and purchased loans, intangible assets and impairment testing, other fair value measurements, and contingent liabilities.
Cash and Cash Equivalents	Cash and Cash Equivalents: Cash and cash equivalents include cash and due from banks and interest-bearing bank balances. Cash equivalents have original maturities of three months or less, and accordingly, the carrying amount of these instruments is deemed to be a reasonable estimate of fair value.
Time Deposits with Other Banks	Time Deposits with Other Banks: Time deposits with other banks consist of certificates of deposit with original maturities greater than three months and are carried at cost.
Securities Purchased and Sold Agreements	Securities Purchased and Sold Agreements: Securities purchased under resale agreements and securities sold under repurchase agreements are generally accounted for as collateralized financing transactions and are recorded at the amount at which the securities were acquired or sold plus accrued interest. It is the Company’s policy to take possession of securities purchased under resale agreements, which are primarily U.S. government and government agency securities. The fair value of securities purchased and sold is monitored and collateral is obtained from or returned to the counterparty when appropriate.
Securities	Securities: Debt securities are classified at date of purchase as available-for-sale or held-to-maturity. Debt securities that may be sold as part of the Company's asset/liability management or in response to, or in anticipation of, changes in interest rates and resulting prepayment risk, or for other factors are stated at fair value with unrealized gains or losses reflected as a component of shareholders' equity net of tax or included in noninterest income as appropriate. Debt securities that the Company has the ability and intent to hold to maturity are carried at amortized cost. Equity securities are stated at fair value with unrealized gains or losses included in noninterest income as securities gains or losses. 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. Realized gains and losses are included in noninterest income as investment securities gains (losses). Interest and dividends on securities, including amortization of premiums and accretion of discounts on debt securities, is recognized in interest income on an accrual basis using the interest method. The Company anticipates prepayments of principal in the calculation of the effective yield for collateralized mortgage obligations and mortgage backed securities by obtaining estimates of prepayments from independent third parties. The adjusted cost of each specific security sold is used to compute realized gains or losses on the sale of securities on a trade date basis.
Credit losses on securities	Credit losses on securities: For securities classified as held-to-maturity, management estimates expected credit losses over the remaining expected life and recognizes this estimate as an allowance for credit losses. Debt securities that are available-for-sale are considered impaired if the fair value is less than amortized cost. Impairments are analyzed at an individual security level on a quarterly basis and both quantitative and qualitative assessments are utilized to determine if a security has a credit loss. Qualitative assessments consider a range of factors including: percent decline in fair value, rating downgrades, subordination, duration, amortized loan-to-value, and the ability of the issuers to pay all amounts due in accordance with the contractual terms. Quantitative assessments are based on a discounted cash flow analysis, which includes evaluating the timing and amount of the expected cash flows. If any portion of the decline in fair value is related to credit, then the credit loss is recognized as an allowance for credit loss and the noncredit portion is recognized in other comprehensive income. Both quantitative and qualitative assessments are utilized to determine if a security has a credit loss. Quantitative assessments are based on a discounted cash flow method. Qualitative assessments consider a range of factors including: percent decline in fair value, rating downgrades, subordination, duration, amortized loan-to-value, and the ability of the issuers to pay all amounts due in accordance with the contractual terms.
Loans Held for Sale	Loans Held for Sale: The Company has elected to account for residential mortgage loans originated as held for sale at fair value. Changes in fair value are measured and recorded in Mortgage Banking Fees in noninterest income each period. The Company designates other loans as held for sale when it has the intent to sell them. Such loans are transferred to held for sale at the lower of cost or estimated fair value less cost to sell. At the time of transfer, write-downs on the loans are recorded as charge-offs, establishing a new cost basis upon transfer.
Loans Held for Investment	Loans Held for Investment: Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are considered held for investment. Loans originated by Seacoast and held for investment are recognized at the principal amount outstanding, net of unearned income and amounts charged off. Unearned income includes discounts, premiums and deferred loan origination fees reduced by loan origination costs. Unearned income on loans is amortized to interest income over the life of the related loan using the effective interest rate method. Interest income is recognized on an accrual basis. Loans acquired through business acquisitions are recorded at fair value on the acquisition date. Loans that, as of the date of acquisition, have experienced a more-than-insignificant deterioration in credit quality since origination are classified as purchased credit deteriorated (“PCD”). Acquired loans that do not meet the definition of PCD are classified by the Company as acquired Non-PCD. Expected credit losses on loans not considered PCD are recognized through the provision for credit losses when the initial allowance is recorded.
Allowance for Credit Losses on Loans	Allowance for credit losses on loans: The allowance for credit losses represents management's best estimate of expected future credit losses related to the loan portfolio at the balance sheet date. The allowance for credit losses is a valuation account that is deducted from the loans' amortized cost basis to present the net amount to be collected on loans. Loan balances deemed uncollectible are charged off against the allowance for credit losses and recoveries are credited to the allowance. In order to adjust the allowance to the current estimate of expected credit losses, charges or credits to the provision for credit losses are reflected in the Consolidated Statements of Income. The Company excludes accrued interest on loans from its determination of allowance. Portfolio segments represent the level at which the Company develops and documents its methodology for determining its allowance for credit losses. See Note 4 - Loans, for a description of each of the segments, which are disaggregated by similar risk characteristics such as customer and/or collateral type. The allowance for credit losses is measured on a collective basis when similar risk characteristics exist. 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 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. The forecast may utilize one scenario or a composite of scenarios based on management's judgment and expectations around the current and future macroeconomic outlook. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. In the implementation of CECL at January 1, 2020 and through June 30, 2022, the Company utilized a top-down allowance model based on an analysis of the probability of default (“PD”) and loss given default (“LGD”) to determine an expected loss by loan segment. During the third quarter of 2022, the Company transitioned to a tool that calculates the quantitative portion of expected credit losses at the individual loan level using a discounted cash flow methodology for its commercial loans and using a loss rate methodology for its consumer loans. The new tool being utilized produces more granular results of expected loan loss, incorporates more extensive historical loss data, and allows for a more efficient process. This change did not result in a material impact to the Company’s financial statements. Adjustments may be made to baseline reserves based on an assessment of internal and external influences on credit quality not fully reflected in the quantitative components of the allowance model. These influences may include elements such as changes in concentration, macroeconomic conditions, recent observable asset quality trends, staff turnover, regional market conditions, employment levels, model risk, and loan growth. Based upon management's assessments of these factors, the Company may apply qualitative adjustments to the allowance. Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not also included in the collective evaluation. For loans that are individually evaluated, the allowance is determined through review of data specific to the borrower and the related collateral, if any. When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. The contractual term of a loan excludes expected extensions, renewals, and modification unless either of the following applies: management has a reasonable expectation at the reporting date that a TDR will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and not unconditionally cancellable by the Company. The allowance for PCD loans is determined at the time of acquisition as the estimated expected credit loss of the outstanding balance or par value, based on the methodologies described previously for loans. The allowance recognized at acquisition is added to the acquisition date purchase price to determine the asset’s amortized cost basis. The allowance for credit losses on TDRs is measured using the fair value of the collateral method when the repayment is expected to be provided substantially through the operation or sale of the collateral. Otherwise, when the value of a concession can only be measured using the discounted cash flow method, the allowance for credit losses is determined by discounting the expected future cash flows at the original interest rate of the loan. It is the Company's practice to ensure that the charge-off policy meets or exceeds regulatory requirements. Losses on unsecured consumer loans are recognized at 90 days past due, compared to the regulatory loss criteria of 120 days. In compliance with Federal Financial Institution Examination Council guidelines, secured consumer loans, including residential real estate, are typically charged off or charged down between 120 and 180 days past due, depending on the collateral type. Commercial loans and real estate loans are typically placed on nonaccrual status when principal or interest is past due for 90 days or more, unless the loan is both secured by collateral having realizable value sufficient to discharge the debt in-full and the loan is in process of collection. Secured loans may be charged down to the estimated value of the collateral with previously accrued unpaid interest reversed against interest income. Subsequent charge-offs may be required as a result of changes in the market value of collateral or other repayment prospects. Initial charge-off amounts are based on valuation estimates derived from appraisals or other market information. Generally, new appraisals are not received until the foreclosure process is completed; however, collateral values are evaluated periodically based on market information and incremental charge-offs are recorded if it is determined that collateral values have declined from their initial estimates.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities : The Company enters into derivative contracts, including swaps and floors, to meet the needs of customers who request such services and to manage the Company's exposure to interest rate fluctuations. Derivative contracts are carried at fair value and recorded in the consolidated balance sheet within other assets or other liabilities. The gain or loss resulting from changes in the fair value of interest rate swaps designated and qualifying as cash flow hedging instruments is initially reported as a component of other comprehensive income and subsequently reclassified into earnings through interest income in the same period in which the hedged transaction affects earnings. The Company discontinues hedge accounting prospectively when it is determined that the derivative contract is no longer effective in offsetting changes in the cash flows of the hedged item, the derivative expires or is terminated, management determines that the designation of the derivative as a hedging instrument is no longer appropriate or, for a cash flow hedge, the occurrence of the forecasted transaction is no longer probable. When hedge accounting on a cash flow hedge is discontinued, any subsequent changes in fair value of the derivative are recognized in earnings. The cumulative unrealized gain or loss related to a discontinuing cash flow hedge continues to be reported in Accumulated Other Comprehensive Income (“AOCI”) and is subsequently reclassified into earnings in the same period in which the hedged transactions affects earnings, unless it is probable that the forecasted transaction will not occur by the end of the originally specified time period, in which case the cumulative unrealized gain or loss in AOCI is reclassified into earnings immediately. Cash flows resulting from derivative financial instruments that are accounted for as hedges are classified in the cash flow statement in the same category as the cash flows from the hedged items. See additional disclosures related to derivative instruments and hedging activities in “Note 6 – Derivatives”.
Loan Commitments and Letters of Credit	Loan Commitments and Letters of Credit: Loan commitments and letters of credit are an off-balance sheet item and represent commitments to make loans or lines of credit available to borrowers. The face amount of these commitments represents an exposure to loss, before considering customer collateral or ability to repay. Such commitments are recognized as loans when funded. The Company estimates a reserve for potential losses on unfunded commitments, which is reported separately from the allowance for credit losses within Other Liabilities. The reserve is based upon the same quantitative and qualitative factors applied to the collectively evaluated loan portfolio.
Fair Value Measurements	Fair Value Measurements: The Company measures or monitors the fair value of many of its assets and liabilities. Certain assets are measured on a recurring basis, including available-for-sale securities and loans held for sale. These assets are carried at fair value on the Company’s balance sheets. Additionally, fair value is measured on a non-recurring basis to evaluate assets or liabilities for impairment or for disclosure purposes. Examples include collateral-dependent loans, other real estate owned, loan servicing rights, goodwill, and long-lived assets. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, the Company uses various valuation techniques and assumptions when estimating fair value. The Company applies the following fair value hierarchy: Level 1 – Assets or liabilities for which the identical item is traded on an active exchange, such as publicly-traded instruments or futures contracts. Level 2 – Assets and liabilities valued based on observable market data for similar instruments. Level 3 – Assets and liabilities for which significant valuation assumptions are not readily observable in the market; instruments valued based on the best available data, some of which is internally-developed, and considers risk premiums that a market participant would require. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at and/or marked to fair value, the Company considers the principal market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability. When possible, the Company looks to active and observable markets to price identical assets or liabilities. When identical assets and liabilities are not traded in active markets, the Company looks to market observable data for similar assets and liabilities. Certain assets and liabilities are not actively traded in observable markets and the Company must use alternative valuation techniques to derive a fair value measurement.
Bank Premises and Equipment	Bank Premises and Equipment: Bank premises and equipment are stated at cost, less accumulated depreciation and amortization. Premises and equipment include certain costs associated with the acquisition of leasehold improvements. Depreciation and amortization are recognized principally by the straight-line method, over the estimated useful lives as follows: buildings - 25-40 years, leasehold improvements - 5-25 years, furniture and equipment - 3-12 years. Leasehold improvements amortize over the shorter of lease terms or estimated useful life. Premises and equipment and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are written down to fair value with a corresponding increase to noninterest expense.
Other Real Estate Owned	Other Real Estate Owned: Other real estate owned (“OREO”) consists primarily of real estate acquired in lieu of unpaid loan balances. These assets are carried at an amount equal to the loan balance prior to foreclosure plus costs incurred for improvements to the property, but no more than the estimated fair value of the property less estimated selling costs. Any valuation adjustments required at the date of transfer are charged to the allowance for credit losses. Subsequently, unrealized losses and realized gains and losses are included in other noninterest expense. Operating results from OREO are recorded in other noninterest expense. OREO may also include bank premises no longer utilized in the course of the Company's business (closed branches) that are initially recorded at the lower of carrying value or fair value, less costs to sell. If the fair value of the premises is less than amortized book value, a write down is recorded through noninterest expense. Costs to maintain the property are expensed.
Intangible Assets	Intangible Assets. The Company’s intangible assets consist of goodwill, core deposit intangibles (CDIs), customer relationship intangibles and loan servicing rights. Goodwill results from business combinations and represents the difference between the purchase price and the fair value of net assets acquired. Goodwill may be adjusted for up to one year from the acquisition date in the event new information is obtained which, if known at the date of the acquisition would have impacted the fair value of the acquired assets and liabilities. Goodwill is considered to have an indefinite useful life and is not amortized, but rather tested for impairment annually in the fourth quarter, or more often if circumstances arise that may indicate risk of impairment. If impaired, goodwill is written down with a corresponding impact to noninterest expense. The Company recognizes CDIs that result from either whole bank acquisitions or branch acquisitions. They are initially measured at fair value and then amortized over periods ranging from six
Bank Owned Life Insurance (BOLI)	Bank Owned Life Insurance (BOLI): The Company, through its subsidiary bank, has purchased or acquired through bank acquisitions, life insurance policies on certain key executives. BOLI is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement.
Other Investments	Other Investments: Included in Other Assets are investments in funds generating affordable housing tax credits, and investments in Small Business Investment Companies (“SBICs”), which are privately owned and operated companies licensed by the U.S. Small Business Administration (“SBA”) to invest in small businesses. Investments generating tax credits are accounted for using the proportional amortization method. Under this method, the investor amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits allocated to the investor. SBIC investments are held at cost less impairment, if any. Income from SBIC investments will vary amongst periods and is recognized in noninterest income. Seacoast Bank is a member of the Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”) systems. Members are required to own a certain amount of FHLB and FRB stock based on the level of borrowings and other factors, and may invest in additional amounts. The FHLB and FRB stock are accounted for at cost less impairment, if any. Both cash and stock dividends are recognized in earnings.
Leases	Leases: Arrangements are analyzed at inception to determine the existence of a lease. Right-of-use assets (ROUAs) represent the right to use the underlying asset and lease liabilities represent the obligation to make lease payments for the lease term. Operating lease ROUAs and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of the Company's leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the appropriate term and information available at commencement date in determining the present value of lease payments. The lease term may include options to extend the lease when it is reasonably certain that the option will be exercised. ROUAs and operating lease liabilities are reported in Other Assets and Other Liabilities, respectively, in the Consolidated Balance Sheet. Lease expense for lease payments is recognized on a straight-line basis over the lease term and is classified as Occupancy or Furniture and Equipment expense based on the subject asset.
Revenue Recognition	Revenue Recognition: Revenue recognized reflects the consideration to which the Company expects to be entitled in exchange for the services provided and is recognized when the promised services (performance obligations) are transferred to a customer, requiring the application of the following five-steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. Relevant activity includes: • Service Charges on Deposits: Seacoast Bank offers a variety of deposit-related services to its customers through several delivery channels including branch offices, ATMs, telephone, mobile, and internet banking. Transaction-based fees are recognized when services, each of which represents a performance obligation, are satisfied. Service fees may be assessed monthly, quarterly, or annually; however, the account agreements to which these fees relate can be canceled at any time by Seacoast and/or the customer. Therefore, the contract term is considered a single day (a day-to-day contract). • Wealth Management Income: The Company earns trust fees from fiduciary services provided to trust customers, which include custody of assets, recordkeeping, collection and distribution of funds. Fees are earned over time and accrued monthly as the Company provides services, and are generally assessed based on the market value of the trust assets under management at a particular date or over a particular period. The Company also earns commissions and fees from investment brokerage services provided to its customers through an arrangement with a third-party service provider. Commissions received from the third-party service provider are recorded monthly and are based upon customer activity. Fees are earned over time and accrued monthly as services are provided. The Company acts as an agent in this arrangement and therefore presents the brokerage commissions and fees net of related costs.
Treasury Stock	Treasury Stock: The Company's repurchase of shares of its common stock are recorded at cost as treasury stock and result in a reduction of shareholders' equity. Activity in treasury stock represents shares traded to offset employee payroll taxes on vested shares. Shares held in treasury are used for employee share purchases through the Company's stock purchase plan.
Stock-Based Compensation	Stock-Based Compensation: The stock option plans are accounted for under ASC Topic 718 - Compensation - Stock Compensation and the fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with market assumptions. This amount is amortized on a straight-line basis over the vesting period, generally five years. For restricted stock awards, which generally vest based on continued service with the Company, the deferred compensation is measured as the fair value of the shares on the date of grant, and the deferred compensation is amortized as salaries and employee benefits in accordance with the applicable vesting schedule, generally straight-line over three years. Some shares vest based upon the Company achieving certain performance goals and salary amortization expense is based on an estimate of the most likely results on a straight line basis. The Company accounts for forfeitures as they occur.
Income Taxes	Income Taxes : The Company uses the asset and liability method of accounting for income taxes. Deferred tax assets and liabilities are determined based on temporary differences between the carrying amounts of assets and liabilities in the consolidated financial statements and their related tax bases and are measured using the enacted tax rates and laws that are in effect. A valuation allowance is recognized for a deferred tax asset if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. The effect on deferred tax assets and liabilities of a change in rates is recognized as income or expense in the period in which the change occurs.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In March 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2022-02, Financial Instruments - Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclo sures. 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. The Company adopted the standard effective January 1, 2023, and the adoption did not have a material impact to the consolidated financial statements.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	For the Year Ended December 31, (In thousands, except per share data) 2022 2021 2020 Basic earnings per share Net Income $ 106,507 $ 124,403 $ 77,764 Total weighted average common stock outstanding 63,707 56,586 53,502 Net income per share $ 1.67 $ 2.20 $ 1.45 Diluted earnings per share Net Income $ 106,507 $ 124,403 $ 77,764 Total weighted average common stock outstanding 63,707 56,586 53,502 Add: Dilutive effect of share-based awards outstanding 557 502 428 Total weighted average diluted stock outstanding 64,264 57,088 53,930 Net income per share $ 1.66 $ 2.18 $ 1.44 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)	12 Months Ended
	Dec. 31, 2022
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 available-for-sale ("AFS") and held-to-maturity ("HTM") securities at December 31, 2022 and December 31, 2021 are summarized as follows: December 31, 2022 (In thousands) Amortized Gross Gross 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 December 31, 2021 (In thousands) Amortized Gross Gross Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 6,466 $ 316 $ (3) $ 6,779 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,234,721 8,308 (20,309) 1,222,720 Private mortgage-backed securities and collateralized mortgage obligations 88,096 1,091 (420) 88,767 Collateralized loan obligations 292,751 63 (124) 292,690 Obligations of state and political subdivisions 31,624 1,740 (1) 33,363 Totals $ 1,653,658 $ 11,518 $ (20,857) $ 1,644,319 Held-to-Maturity Debt Securities Mortgage-backed securities of U.S. government-sponsored entities $ 638,640 $ 3,828 $ (15,070) $ 627,398 Totals $ 638,640 $ 3,828 $ (15,070) $ 627,398
Summary of Amortized Cost and Fair Value of Securities Held to Maturity	The amortized cost, gross unrealized gains and losses and fair value of available-for-sale ("AFS") and held-to-maturity ("HTM") securities at December 31, 2022 and December 31, 2021 are summarized as follows: December 31, 2022 (In thousands) Amortized Gross Gross 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 December 31, 2021 (In thousands) Amortized Gross Gross Fair Available-for-Sale Debt Securities U.S. Treasury securities and obligations of U.S. government agencies $ 6,466 $ 316 $ (3) $ 6,779 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,234,721 8,308 (20,309) 1,222,720 Private mortgage-backed securities and collateralized mortgage obligations 88,096 1,091 (420) 88,767 Collateralized loan obligations 292,751 63 (124) 292,690 Obligations of state and political subdivisions 31,624 1,740 (1) 33,363 Totals $ 1,653,658 $ 11,518 $ (20,857) $ 1,644,319 Held-to-Maturity Debt Securities Mortgage-backed securities of U.S. government-sponsored entities $ 638,640 $ 3,828 $ (15,070) $ 627,398 Totals $ 638,640 $ 3,828 $ (15,070) $ 627,398
Summary of Investments Classified by Contractual Maturity	Securities not due at a single maturity date are shown separately. Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair Due in less than one year $ — $ — $ 1,990 $ 2,087 Due after one year through five years — — 17,509 17,419 Due after five years through ten years — — 3,123 3,030 Due after ten years — — 20,541 18,852 — — 43,163 41,388 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 747,408 $ 617,741 $ 1,561,197 $ 1,338,653 Private mortgage-backed securities and collateralized mortgage obligations — — 179,148 166,387 Collateralized loan obligations — — 313,155 302,904 Other debt securities — — 22,640 22,410 Totals $ 747,408 $ 617,741 $ 2,119,303 $ 1,871,742
Schedule of Unrealized Loss and Fair Value on Investments	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. 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) December 31, 2021 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 $ 97 $ (1) $ 245 $ (2) $ 342 $ (3) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 955,881 (19,575) 11,953 (734) 967,834 (20,309) Private mortgage-backed securities and collateralized mortgage obligations 33,640 (173) 9,628 (247) 43,268 (420) Collateralized loan obligations 123,202 (81) 9,461 (43) 132,663 (124) Obligations of state and political subdivisions 499 (1) — — 499 (1) Totals $ 1,113,319 $ (19,831) $ 31,287 $ (1,026) $ 1,144,606 $ (20,857)

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2022
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: 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 Paycheck Protection Program 1,474 3,116 — 4,590 Totals $ 5,944,193 $ 1,965,749 $ 234,782 $ 8,144,724 December 31, 2021 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 199,341 $ 31,438 $ 45 $ 230,824 Commercial real estate - owner occupied 983,517 186,812 27,445 1,197,774 Commercial real estate - non-owner occupied 1,278,180 382,554 75,705 1,736,439 Residential real estate 1,261,306 156,957 7,091 1,425,354 Commercial and financial 968,318 84,395 16,643 1,069,356 Consumer 169,507 4,658 10 174,175 Paycheck Protection Program 69,503 21,604 — 91,107 Totals $ 4,929,672 $ 868,418 $ 126,939 $ 5,925,029
Schedule of Past Due Financing Receivables	The following table presents the status of net loan balances as of December 31, 2022 and December 31, 2021. 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 Paycheck Protection Program 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 Paycheck Protection Program 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 December 31, 2021 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 199,087 $ — $ — $ — $ 254 $ 199,341 Commercial real estate - owner occupied 982,804 — — — 713 983,517 Commercial real estate - non-owner occupied 1,276,582 — — — 1,598 1,278,180 Residential real estate 1,248,160 3,457 143 — 9,546 1,261,306 Commercial and financial 963,828 851 41 — 3,598 968,318 Consumer 168,791 565 23 15 113 169,507 Paycheck Protection Program 69,434 — — 69 — 69,503 Total Portfolio Loans $ 4,908,686 $ 4,873 $ 207 $ 84 $ 15,822 $ 4,929,672 Acquired Non-PCD Loans Construction and land development $ 31,438 $ — $ — $ — $ — $ 31,438 Commercial real estate - owner occupied 186,652 — 160 — — 186,812 Commercial real estate - non-owner occupied 381,510 — — — 1,044 382,554 Residential real estate 154,981 182 — — 1,794 156,957 Commercial and financial 84,180 — 40 — 175 84,395 Consumer 4,082 135 — — 441 4,658 Paycheck Protection Program 21,567 — — 37 — 21,604 Total Acquired Non-PCD Loans $ 864,410 $ 317 $ 200 $ 37 $ 3,454 $ 868,418 PCD Loans Construction and land development $ 40 $ — $ — $ — $ 5 $ 45 Commercial real estate - owner occupied 24,192 — — — 3,253 27,445 Commercial real estate - non-owner occupied 72,442 — — — 3,263 75,705 Residential real estate 5,386 — — — 1,705 7,091 Commercial and financial 13,547 — — — 3,096 16,643 Consumer 10 — — — — 10 Total PCD Loans $ 115,617 $ — $ — $ — $ 11,322 $ 126,939 Total Loans $ 5,888,713 $ 5,190 $ 407 $ 121 $ 30,598 $ 5,925,029
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: 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 December 31, 2021 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ 37 $ 222 $ 259 $ 92 Commercial real estate - owner-occupied 2,976 990 3,966 419 Commercial real estate - non-owner occupied 4,490 1,415 5,905 27 Residential real estate 12,358 687 13,045 357 Commercial and financial 2,676 4,193 6,869 2,384 Consumer 29 525 554 525 Totals $ 22,566 $ 8,032 $ 30,598 $ 3,804
Schedule of Collateral Dependent Loans	The following table presents collateral-dependent loans as of: (In thousands) December 31, 2022 December 31, 2021 Construction and land development $ 59 $ 271 Commercial real estate - owner-occupied 2,733 4,706 Commercial real estate - non-owner occupied 1,698 4,923 Residential real estate 11,333 16,334 Commercial and financial 10,448 8,741 Consumer 426 741 Totals $ 26,697 $ 35,716 December 31, (In thousands) 2022 2021 2020 Fair value of pledged securities - overnight and continuous: Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 184,967 $ 134,577 $ 137,268
Schedule of Risk Categories of Loans by Class of Loans	The following tables present the risk rating of loans by year of origination as of: 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 December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Total 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 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 December 31, 2021 (In thousands) 2020 2019 2018 2017 2016 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 94,318 $ 23,860 $ 38,058 $ 25,507 $ 3,995 $ 15,466 $ 29,349 $ 230,553 Special Mention — — — — — — — — Substandard — — — — — — — — Substandard Impaired — — — 222 — 49 — 271 Doubtful — — — — — — — — Total $ 94,318 $ 23,860 $ 38,058 $ 25,729 $ 3,995 $ 15,515 $ 29,349 $ 230,824 Commercial real estate - owner occupied Risk Ratings: Pass $ 205,404 $ 154,432 $ 179,786 $ 132,353 $ 125,763 $ 363,986 $ 10,005 $ 1,171,729 Special Mention — 6,527 5,370 649 218 3,250 — 16,014 Substandard — — — — 3,290 1,610 — 4,900 Substandard Impaired — — 2,742 310 596 1,483 — 5,131 Doubtful — — — — — — — — Total $ 205,404 $ 160,959 $ 187,898 $ 133,312 $ 129,867 $ 370,329 $ 10,005 $ 1,197,774 Commercial real estate - non-owner occupied Risk Ratings: Pass $ 395,308 $ 207,824 $ 298,021 $ 186,339 $ 110,990 $ 460,435 $ 6,477 $ 1,665,394 Special Mention — — 844 — 289 13,850 — 14,983 Substandard — 4,776 3,009 23,206 1,900 17,266 — 50,157 Substandard Impaired — 1,044 1,849 — 326 2,686 — 5,905 Doubtful — — — — — — — — Total $ 395,308 $ 213,644 $ 303,723 $ 209,545 $ 113,505 $ 494,237 $ 6,477 $ 1,736,439 Residential real estate Risk Ratings: Pass $ 394,547 $ 114,364 $ 90,566 $ 119,836 $ 118,556 $ 213,950 $ 354,439 $ 1,406,258 Special Mention — — — 70 — 1,243 532 1,845 Substandard — 340 — — 58 422 86 906 Substandard Impaired — 149 724 39 4,415 8,507 2,511 16,345 Doubtful — — — — — — — — Total $ 394,547 $ 114,853 $ 91,290 $ 119,945 $ 123,029 $ 224,122 $ 357,568 $ 1,425,354 Commercial and financial Risk Ratings: Pass $ 340,826 $ 180,677 $ 97,072 $ 68,232 $ 39,331 $ 56,053 $ 246,568 $ 1,028,759 Special Mention 530 15,587 — 237 251 84 876 17,565 Substandard — 371 2,605 3,594 1,436 3,217 339 11,562 Substandard Impaired — 196 4,561 3,694 1,371 1,520 128 11,470 Doubtful — — — — — — — — Total $ 341,356 $ 196,831 $ 104,238 $ 75,757 $ 42,389 $ 60,874 $ 247,911 $ 1,069,356 Consumer Risk Ratings: Pass $ 45,063 $ 31,342 $ 26,194 $ 17,300 $ 9,979 $ 16,019 $ 25,418 $ 171,315 Special Mention — 24 431 37 167 3 1,199 1,861 Substandard — — 18 — 17 — 223 258 Substandard Impaired — — 92 23 74 118 434 741 Doubtful — — — — — — — — Total $ 45,063 $ 31,366 $ 26,735 $ 17,360 $ 10,237 $ 16,140 $ 27,274 $ 174,175 Paycheck Protection Program Risk Ratings: Pass $ 87,036 $ 4,071 $ — $ — $ — $ — $ — $ 91,107 Total $ 87,036 $ 4,071 $ — $ — $ — $ — $ — $ 91,107 Consolidated Risk Ratings: Pass $ 1,562,502 $ 716,570 $ 729,697 $ 549,567 $ 408,614 $ 1,125,909 $ 672,256 $ 5,765,115 Special Mention 530 22,138 6,645 993 925 18,430 2,607 52,268 Substandard — 5,487 5,632 26,800 6,701 22,515 648 67,783 Substandard Impaired — 5,460 9,968 4,288 6,782 14,363 3,073 43,934 Doubtful — — — — — — — — Total $ 1,563,032 $ 745,584 $ 751,942 $ 581,648 $ 423,022 $ 1,181,217 $ 678,584 $ 5,925,029

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2022
Receivables [Abstract]
Allowance for Credit Losses on Financing Receivables	Activity in the allowance for credit losses is summarized as follows: For the Year Ended December 31, 2022 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 2,751 $ 518 $ 3,127 $ — $ 68 $ — $ 6,464 Commercial real estate - owner occupied 8,579 38 (2,566) — — — 6,051 Commercial real estate - non-owner occupied 36,617 880 5,871 (179) 69 — 43,258 Residential real estate 12,811 229 16,284 (84) 393 (28) 29,605 Commercial and financial 19,744 1,699 (5,367) (1,233) 807 (2) 15,648 Consumer 2,813 1,911 8,834 (1,415) 733 (7) 12,869 Total $ 83,315 $ 5,275 $ 26,183 $ (2,911) $ 2,070 $ (37) $ 113,895 For the Year Ended December 31, 2021 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 4,920 $ — $ (2,300) $ — $ 133 $ (2) $ 2,751 Commercial real estate - owner occupied 9,868 — (1,289) — — — 8,579 Commercial real estate - non-owner occupied 38,266 1,327 (1,664) (1,327) 15 — 36,617 Residential real estate 17,500 — (5,822) (57) 1,196 (6) 12,811 Commercial and financial 18,690 1,719 2,292 (3,987) 1,030 — 19,744 Consumer 3,489 — (638) (727) 697 (8) 2,813 Total $ 92,733 $ 3,046 $ (9,421) $ (6,098) $ 3,071 $ (16) $ 83,315 For the Year Ended December 31, 2020 (In thousands) Beginning Impact of Adoption of ASC 326 Initial Allowance on PCD Loans Acquired During the Period Provision for Loan Losses 1 Charge- Recoveries TDR Ending Construction and land development $ 1,842 $ 1,479 $ 87 $ 1,399 $ — $ 114 $ (1) $ 4,920 Commercial real estate - owner occupied 5,361 80 1,161 3,632 (310) 18 (74) 9,868 Commercial real estate - non-owner occupied 7,863 9,341 2,236 18,966 (177) 37 — 38,266 Residential real estate 7,667 5,787 124 3,840 (240) 350 (28) 17,500 Commercial and financial 9,716 3,677 2,643 8,329 (7,091) 1,416 — 18,690 Consumer 2,705 862 28 1,613 (2,024) 316 (11) 3,489 Total $ 35,154 $ 21,226 $ 6,279 $ 37,779 $ (9,842) $ 2,251 $ (114) $ 92,733 1 In addition, the Company recorded a $0.4 million provision to establish a valuation allowance on accrued interest receivable.
Loan Portfolio and Related Allowance	The Company’s loan portfolio and related allowance at December 31, 2022 and 2021 is shown in the following tables. 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 1,336,469 13,009 1,348,636 15,648 Consumer 426 362 286,161 12,507 286,587 12,869 Paycheck Protection Program — — 4,590 — 4,590 — Total $ 31,514 $ 3,547 $ 8,113,210 $ 110,348 $ 8,144,724 $ 113,895 December 31, 2021 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ 271 $ 92 $ 230,553 $ 2,659 $ 230,824 $ 2,751 Commercial real estate - owner occupied 5,131 419 1,192,643 8,160 1,197,774 8,579 Commercial real estate - non-owner occupied 5,905 27 1,730,534 36,590 1,736,439 36,617 Residential real estate 16,345 646 1,409,009 12,165 1,425,354 12,811 Commercial and financial 11,470 2,885 1,057,886 16,859 1,069,356 19,744 Consumer 741 685 173,434 2,128 174,175 2,813 Paycheck Protection Program — — 91,107 — 91,107 — Total $ 39,863 $ 4,754 $ 5,885,166 $ 78,561 $ 5,925,029 $ 83,315

Derivatives (Tables)

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	(In thousands) Notional Amount Fair Value Balance Sheet Category December 31, 2022 Back-to-back swaps $ 312,808 $ 23,140 Other Assets and Other Liabilities Interest rate floors 300,000 2 Other Assets December 31, 2021 Back-to-back swaps $ 175,392 $ 8,022 Other Assets and Other Liabilities Interest rate floors 300,000 290 Other Assets

Bank Premises and Equipment (Ta

Bank Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Summary of Bank Premises and Equipment	Bank premises and equipment consisted of the following: (In thousands) Cost Accumulated Net December 31, 2022 Premises (including land of $37,516) $ 138,447 $ (33,037) $ 105,410 Furniture and equipment 40,354 (28,872) 11,482 Total $ 178,801 $ (61,909) $ 116,892 December 31, 2021 Premises (including land of $23,359) $ 95,810 $ (30,913) $ 64,897 Furniture and equipment 34,044 (26,537) 7,507 Total $ 129,854 $ (57,450) $ 72,404

Goodwill and Acquired Intangi_2

Goodwill and Acquired Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table presents changes in the carrying amount of goodwill: For the Year Ended December 31, (In thousands) 2022 2021 2020 Beginning of year $ 252,154 $ 221,176 $ 205,286 Changes from business combinations 228,165 30,978 15,890 Total $ 480,319 $ 252,154 $ 221,176
Schedule of Core Deposit Intangibles	The change in balance for CDI is as follows: For the Year Ended December 31, (In thousands) 2022 2021 2020 Beginning of year $ 12,998 $ 14,577 $ 18,305 Acquired CDI, including measurement period adjustments 67,388 3,454 2,129 Amortization expense (9,101) (5,033) (5,857) End of year $ 71,285 $ 12,998 $ 14,577 (In months) Remaining average amortization period for CDI 49 39 44
Gross Carrying Amount and Accumulated Amortization of Intangible Asset	The gross carrying amount and accumulated amortization of the Company's CDI subject to amortization as of: December 31, 2022 December 31, 2021 (In thousands) Gross Accumulated Gross Accumulated Core deposit intangible $ 97,778 $ (26,493) $ 41,596 $ (28,598)

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	A significant portion of the Company's short-term borrowings were comprised of securities sold under agreements to repurchase with overnight maturities: For the Year Ended December 31, (In thousands) 2022 2021 2020 Maximum amount outstanding at any month end $ 172,029 $ 124,101 $ 119,609 Weighted average interest rate at end of year 1.89 % 0.12 % 0.16 % Average amount outstanding $ 121,318 $ 113,881 $ 84,514 Weighted average interest rate during the year 0.81 % 0.12 % 0.33 %
Schedule of Collateral Dependent Loans	The following table presents collateral-dependent loans as of: (In thousands) December 31, 2022 December 31, 2021 Construction and land development $ 59 $ 271 Commercial real estate - owner-occupied 2,733 4,706 Commercial real estate - non-owner occupied 1,698 4,923 Residential real estate 11,333 16,334 Commercial and financial 10,448 8,741 Consumer 426 741 Totals $ 26,697 $ 35,716 December 31, (In thousands) 2022 2021 2020 Fair value of pledged securities - overnight and continuous: Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 184,967 $ 134,577 $ 137,268
Schedule of Junior Subordinated Debentures and Related Trust Preferred and Common Equity Securities	The following table summarizes the Company's junior subordinated debentures and related trust preferred and common equity securities as of December 31, 2022: (In thousands) Description Issuance Date Acquisition Date 1 Maturity Date Junior Subordinated Debt Trust Preferred Securities Common Equity Securities Contractual Interest Rate Interest Rate at December 31, 2022 SBCF Capital Trust I 3/31/2005 n/a 3/31/2035 $ 20,619 $ 20,000 $ 619 3 month LIBOR +175bps 6.50% SBCF Statutory Trust II 12/16/2005 n/a 12/16/2035 20,619 20,000 619 3 month LIBOR +133bps 6.10% SBCF Statutory Trust III 6/29/2007 n/a 6/15/2037 12,372 12,000 372 3 month LIBOR +135bps 6.12% The BANKshares, Inc. Statutory Trust I 12/19/2002 10/1/2014 12/26/2032 5,155 5,000 155 3 month LIBOR +325bps 7.97% The BANKshares, Inc. Statutory Trust II 3/17/2004 10/1/2014 3/17/2034 4,124 4,000 124 3 month LIBOR +279bps 7.53% The BANKshares, Inc. Capital Trust I 12/15/2005 10/1/2014 12/15/2035 5,155 5,000 155 3 month LIBOR +139bps 6.08% Grand Bank Capital Trust I 10/29/2004 7/17/2015 10/29/2034 7,217 7,000 217 3 month LIBOR +198bps 6.71% $ 75,261 $ 73,000 $ 2,261 1 Acquired junior subordinated debentures were recorded at their acquisition date fair values, which collectively was $5.6 million lower than face value; this amount is being amortized into interest expense over the remaining term to maturity.

Employee Benefits and Stock C_2

Employee Benefits and Stock Compensation (Tables)	12 Months Ended
	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Schedule of Share-Based Compensation	The impact of share-based compensation on the Company’s financial results is presented below: For the Year Ended December 31, (In thousands) 2022 2021 2020 Share-based compensation expense 1 $ 11,155 $ 8,685 $ 7,304 Income tax benefit (2,827) (2,067) (1,737) 1 Excludes $10.4 million in 2022 and $4.7 million in 2021 associated with replacement awards granted in bank acquisitions.
Schedule of Unrecognized Compensation Cost, Nonvested Awards	The total unrecognized compensation cost and the weighted-average period over which unrecognized compensation cost is expected to be recognized related to non-vested share-based compensation arrangements at December 31, 2022 is presented below: (In thousands) Unrecognized Weighted-Average Period Remaining (Years) Restricted stock awards $ 11,834 1.80 Restricted stock units 3,977 1.98 Stock options — — Total $ 15,811 1.85
Schedule of Nonvested Share Activity	A summary of the status of the Company’s non-vested RSAs as of December 31, 2022, and changes during the year then ended, is presented below: Restricted Weighted-Average Grant-Date Fair Value Non-vested at January 1, 2022 398,704 $ 26.68 Granted 422,745 33.08 Forfeited/Canceled (34,387) 29.88 Vested (253,787) 27.28 Non-vested at December 31, 2022 533,275 $ 31.26 A summary of the status of the Company’s non-vested RSUs as of December 31, 2022, and changes during the year then ended, is presented below: Restricted Weighted-Average Grant-Date Fair Value Non-vested at January 1, 2022 285,221 $ 26.71 Granted 121,025 34.11 Forfeited/Canceled (20,824) 26.29 Vested (75,388) 30.57 Non-vested at December 31, 2022 310,034 $ 28.69
Schedule of Restricted Stock and Restricted Stock Units Activity	Information regarding restricted stock awards during each of the following years is presented below: For the Year Ended December 31, 2022 2021 2020 Shares granted 422,745 218,695 379,869 Weighted-average grant date fair value $ 33.08 $ 35.08 $ 18.36 Fair value of awards vested 1 $ 6,923 $ 4,731 $ 3,745 1 Based on grant date fair value, in thousands. For the Year Ended December 31, 2022 2021 2020 Shares granted 121,025 103,073 171,287 Weighted-average grant date fair value $ 34.11 $ 35.24 $ 17.29 Fair value of awards vested 1 $ 2,305 $ 1,936 $ 2,962 1 Based on grant date fair value, in thousands.
Schedule of Stock Option Valuation Assumptions	For the Year Ended December 31, 2022 2021 2020 Risk-free interest rates 2.21 % 0.12 % n/a Expected dividend yield 1.95 % 1.65 % n/a Expected volatility 32.09 % 36.87 % n/a Expected lives (years) 1.0 1.0 n/a
Schedule of Stock Options Roll Forward	A summary of the Company’s stock options as of December 31, 2022, and changes during the year then ended, is presented below: Options Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term (Years) Aggregate Outstanding at January 1, 2022 810,180 $ 22.02 Granted 553,803 14.28 Exercised (522,126) 13.05 Forfeited (4,235) 30.16 Outstanding at December 31, 2022 837,622 $ 21.72 3.25 $ 7,936 Exercisable at December 31, 2022 837,622 $ 21.72 3.25 $ 7,936
Schedule of Stock Option Activity	The following table presents information related to stock options during each of the following years: For the Year Ended December 31, 2022 2021 2020 Options granted 553,803 356,497 n/a Weighted-average grant date fair value $ 14.28 $ 16.70 n/a Intrinsic value of stock options exercised, in thousands 8,860 5,808 830
Schedule of Options Outstanding and Remaining Contractual Life of Stock Options	The following table presents information related to stock options as of December 31, 2022: Range of Exercise Prices Options Remaining Options Weighted $5.88 to $14.82 323,241 1.40 323,241 $ 11.83 $15.80 to $28.69 332,939 4.19 332,939 26.19 $29.38 to $35.78 181,442 4.83 181,442 31.15 Total 837,622 3.25 837,622 $ 21.72
Schedule of Employee Stock Purchase Plan Activity	Employee contributions to the ESPP are made through payroll deductions. 2022 2021 2020 ESPP shares purchased 20,972 14,834 19,713 Weighted-average employee purchase price $ 30.76 $ 32.43 $ 20.68

Lease Commitments (Tables)

Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Schedule of Supplemental Lease Cost Information Related to Operating Leases	Lease cost consists of: For the Year Ended December 31, (In thousands) 2022 2021 2020 Operating lease cost $ 8,111 $ 5,872 $ 5,738 Variable lease cost 1,599 996 1,325 Short-term lease cost 427 564 497 Sublease income (704) (601) (684) Total lease cost $ 9,433 $ 6,831 $ 6,876
Schedule of Supplemental Balance Sheet Information Related to Operating Leases	The following table provides supplemental information related to leases: As of and For the Year Ended December 31, (In thousands, except for weighted average data) 2022 2021 Operating lease right-of-use assets $ 47,500 $ 35,256 Operating lease liabilities 50,770 38,330 Cash paid during the year for amounts included in the measurement of operating lease liabilities 16,508 11,117 Right-of-use assets recorded during the year in exchange for new or renewed operating lease obligations 5,305 12,459 Right-of-use assets obtained during the year through bank acquisition 14,597 2,606 Weighted average remaining lease term for operating leases 8.0 years 8.3 years Weighted average discount rate for operating leases 4.64 % 4.25 %
Schedule of Maturities of Lease Liabilities	Maturities of lease liabilities as of December 31, 2022 are as follows: (In thousands) 2023 $ 8,880 2024 8,646 2025 8,035 2026 7,045 2027 6,355 Thereafter 21,205 Total undiscounted cash flows 60,166 Less: Net present value adjustment (9,396) Total $ 50,770

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The provision for income taxes is as follows: For the Year Ended December 31, (In thousands) 2022 2021 2020 Current Federal $ 2,770 $ 23,661 $ 21,688 State (1,266) 3,882 4,471 Deferred Federal 23,710 6,800 (2,697) State 6,415 (8) (644) $ 31,629 $ 34,335 $ 22,818
Schedule of Effective Income Tax Rate Reconciliation	The difference between the total expected tax expense (computed by applying the U.S. Federal tax rate of 21% to pretax income) and the reported income tax provision relating to income before income taxes is as follows: For the Year Ended December 31, (In thousands) 2022 2021 2020 Tax rate applied to income before income taxes $ 29,009 $ 33,335 $ 21,122 Increase (decrease) resulting from the effects of: Tax law change — — (375) Nondeductible acquisition costs 924 419 199 Tax exempt interest on loans, obligations of states and political subdivisions and bank owned life insurance (1,341) (1,276) (1,110) State income taxes (1,081) (813) (804) Tax credit investments (406) (213) (72) Stock compensation (992) (1,239) (111) Executive compensation disallowance 402 253 — Other (36) (5) 142 Federal tax provision 26,479 30,461 18,991 State tax provision 5,150 3,874 3,827 Total income tax provision $ 31,629 $ 34,335 $ 22,818
Schedule of Deferred Tax Assets and Liabilities	The following is a summary of the significant components of the Company's deferred tax assets and liabilities as of: December 31, (In thousands) 2022 2021 Allowance for credit losses $ 31,097 $ 22,686 Other real estate owned 591 52 Accrued stock compensation 2,931 2,323 Federal tax loss carryforward 3,150 2,138 State tax loss carryforward 1,117 1,226 Lease liabilities 12,868 9,399 Net unrealized securities losses 59,392 2,287 Deferred compensation 2,766 3,276 Accrued interest and fee income 16,035 — Other 1,755 477 Gross deferred tax assets 131,702 43,864 Less: Valuation allowance — — Deferred tax assets net of valuation allowance 131,702 43,864 Core deposit base intangible (18,767) (3,134) Accrued interest and fee income — (1,660) Premises and equipment (2,214) (776) Right of use assets (12,039) (8,645) Other (4,225) (2,328) Gross deferred tax liabilities (37,245) (16,543) Net deferred tax assets $ 94,457 $ 27,321
Summary of Income Tax Examinations	The following are the major tax jurisdictions in which the Company operates and the earliest tax year, exclusive of the impact of the net operating loss carryforwards, subject to examination: Jurisdiction Tax Year United States of America 2019 Florida 2019

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Summary of Required Regulatory Capital	At December 31, 2022 and 2021, the Company and Seacoast Bank, its wholly-owned banking subsidiary, were both considered “well capitalized” based on the applicable U.S. regulatory capital ratio requirements as reflected in the table below: Minimum to meet Minimum for Capital Adequacy Purpose 1 (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Seacoast Banking Corporation of Florida (Consolidated) At December 31, 2022: Total Risk-Based Capital Ratio (to risk-weighted assets) $ 1,454,168 15.79 % n/a n/a $ 736,709 ≥ 8.00 % Tier 1 Capital Ratio (to risk-weighted assets) 1,361,832 14.79 n/a n/a 552,532 ≥ 6.00 Common Equity Tier 1 Capital Ratio (to risk-weighted assets) 1,277,295 13.87 n/a n/a 414,399 ≥ 4.50 Leverage Ratio (to adjusted average assets) 1,361,832 11.46 n/a n/a 475,134 ≥ 4.00 At December 31, 2021: Total Risk-Based Capital Ratio (to risk-weighted assets) $ 1,200,885 18.21 % n/a n/a $ 527,630 ≥ 8.00 % Tier 1 Capital Ratio (to risk-weighted assets) 1,147,306 17.40 n/a n/a 395,723 ≥ 6.00 Common Equity Tier 1 Capital Ratio (to risk-weighted assets) 1,075,656 16.31 n/a n/a 296,792 ≥ 4.50 Leverage Ratio (to adjusted average assets) 1,147,306 11.68 n/a n/a 392,763 ≥ 4.00 Seacoast National Bank (A Wholly Owned Bank Subsidiary) At December 31, 2022: Total Risk-Based Capital Ratio (to risk-weighted assets) $ 1,330,836 14.47 % $ 919,904 ≥ 10.00 % $ 735,923 ≥ 8.00 % Tier 1 Capital Ratio (to risk-weighted assets) 1,238,500 13.46 735,923 ≥ 8.00 551,942 ≥ 6.00 Common Equity Tier 1 Capital Ratio (to risk-weighted assets) 1,238,496 13.46 597,938 ≥ 6.50 413,957 ≥ 4.50 Leverage Ratio (to adjusted average assets) 1,238,500 10.44 620,398 ≥ 5.00 496,318 ≥ 4.00 At December 31, 2021: Total Risk-Based Capital Ratio (to risk-weighted assets) $ 1,099,439 16.68 % $ 658,819 ≥ 10.00 % $ 527,055 ≥ 8.00 % Tier 1 Capital Ratio (to risk-weighted assets) 1,045,860 15.86 527,055 ≥ 8.00 395,291 ≥ 6.00 Common Equity Tier 1 Capital Ratio (to risk-weighted assets) 1,045,856 15.86 428,232 ≥ 6.50 296,468 ≥ 4.50 Leverage Ratio (to adjusted average assets) 1,045,860 10.65 490,798 ≥ 5.00 392,638 ≥ 4.00 1 Excludes the Basel III capital conservation buffer of 2.5%, which if not exceeded may constrain dividends, equity repurchases and compensation. n/a - not applicable.

Seacoast Banking Corporation _2

Seacoast Banking Corporation of Florida (Parent Company Only) Financial Information (Tables)	12 Months Ended
	Dec. 31, 2022
Condensed Financial Information Disclosure [Abstract]
Summary of Balance Sheet	Balance Sheets December 31, (In thousands) 2022 2021 Assets Cash $ 58 $ 57 Securities purchased under agreement to resell with subsidiary bank, maturing within 30 days 111,698 98,398 Investment in subsidiaries 1,578,786 1,286,478 Other assets 2,335 1,140 $ 1,692,877 $ 1,386,073 Liabilities and Shareholders' Equity Subordinated debt $ 84,533 $ 71,646 Other liabilities 673 3,795 Shareholders' equity 1,607,671 1,310,632 $ 1,692,877 $ 1,386,073
Summary of Statements of Income (Loss)	Statements of Income Year Ended December 31, (In thousands) 2022 2021 2020 Income Interest/other $ 897 $ 167 $ 270 Dividends from subsidiary Bank 48,424 47,684 20,230 Total income 49,321 47,851 20,500 Interest expense 3,090 1,683 2,236 Other expenses 1,023 765 838 Total expenses 4,113 2,448 3,074 Income before income taxes and equity in undistributed income of subsidiaries 45,208 45,403 17,426 Income tax benefit (675) (481) (589) Income before equity in undistributed income of subsidiaries 45,883 45,884 18,015 Equity in undistributed income of subsidiaries 60,624 78,519 59,749 Net income $ 106,507 $ 124,403 $ 77,764
Summary of Statement of Cash Flows	Statements of Cash Flows Year Ended December 31, (In thousands) 2022 2021 2020 Cash flows from operating activities Adjustments to reconcile net income to net cash provided Net Income $ 106,507 $ 124,403 $ 77,764 Equity in undistributed income of subsidiaries (60,624) (78,519) (59,749) Net (increase) decrease in other assets (13,823) (489) 1,772 Net increase in other liabilities 499 400 256 Net cash provided by operating activities 32,559 45,795 20,043 Cash flows from investing activities Net cash from bank acquisitions 17,610 — (1,462) Net advances with subsidiary (13,300) (28,324) (17,095) Net cash provided by (used in) investment activities 4,310 (28,324) (18,557) Cash flows from financing activities Dividends paid (41,242) (22,506) — Stock based employment benefit plans 4,374 5,022 (1,486) Net cash used in financing activities (36,868) (17,484) (1,486) Net change in cash 1 (13) — Cash at beginning of year 57 70 70 Cash at end of year $ 58 $ 57 $ 70 Supplemental disclosure of cash flow information: Cash paid during the period for interest $ 2,890 $ 1,441 $ 1,992

Contingent Liabilities and Co_2

Contingent Liabilities and Commitments with Off-Balance Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Summary of Financial Instruments with Off-Balance-Sheet Risk	Unfunded commitments for the Company as of: December 31, (In thousands) 2022 2021 Contract or Notional Amount Financial instruments whose contract amounts represent credit risk: Commitments to extend credit $ 2,814,924 $ 1,980,338 Standby letters of credit and financial guarantees written: Secured 19,744 12,091 Unsecured 3,191 1,189 Unfunded limited partner equity commitment 26,761 36,393

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value, 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 December 31, 2022 and December 31, 2021 included: Fair Value Quoted Prices in Significant Other Significant Other (In thousands) Measurements Level 1 Level 2 Level 3 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 $ — At December 31, 2021 Financial Assets Available-for-sale debt securities 1 $ 1,644,319 $ 197 $ 1,644,122 $ — Derivative financial instruments 2 8,312 — 8,312 — Loans held for sale 2 31,791 — 31,791 — Loans 3 8,443 — 1,558 6,885 Other real estate owned 4 13,618 — — 13,618 Equity securities 5 9,316 9,316 — — Financial Liabilities Derivative financial instruments 2 8,022 — 8,022 — 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. 4 Fair value is measured on a nonrecurring basis in accordance with ASC Topic 360. 5 An investment in shares of a mutual fund that invests primarily in CRA-qualified debt securities, reported at fair value in Other Assets. Recurring fair value basis is determined using market quotations.
Schedule of Contractual Balance and Gains or Losses	The aggregate fair value and contractual balance of loans held for sale as of December 31, 2022 and 2021 is as follows: December 31, (In thousands) 2022 2021 Aggregate fair value $ 3,151 $ 31,791 Contractual balance 3,071 30,963 Excess 80 828
Fair Value Measurements, Recurring and Nonrecurring	The carrying amount and fair value of the Company's other significant financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of December 31, 2022 and December 31, 2021 is as follows: Carrying Quoted Prices in Significant Other Significant Other (In thousands) Amount Level 1 Level 2 Level 3 At December 31, 2022 Financial Assets Held-to-maturity debt securities 1 $ 747,408 $ — $ 617,741 $ — Time deposits with other banks 3,236 — 2,989 — Loans, net 8,022,316 — — 7,845,375 Financial Liabilities Deposits 9,981,595 — — 9,976,125 Federal Home Loan Bank (FHLB) borrowings 150,000 — — 149,450 Subordinated debt 84,533 — 82,226 — At December 31, 2021 Financial Assets Held-to-maturity debt securities 1 $ 638,640 $ — $ 627,398 $ — Loans, net 5,833,271 — — 5,907,447 Financial Liabilities Deposits 8,067,589 — — 8,067,995 Subordinated debt 71,646 — 69,348 — 1 See “Note 3 - Securities” for further detail of recurring fair value basis of individual investment categories.

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2022
Business Combinations [Abstract]
Summary of Purchase Price Calculation	(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 The Company acquired 100% of the outstanding common stock of Legacy Bank. Under the terms of the definitive agreement, each share of Legacy Bank common stock was converted into the right to receive 0.1703 share of Seacoast common stock. (In thousands, except per share data) August 6, 2021 Number of Legacy Bank common shares outstanding 15,778 Per share exchange ratio 0.1703 Number of shares of SBCF common stock issued 2,687 Multiplied by common stock price per share on August 6, 2021 $ 32.19 Value of SBCF common stock issued $ 86,487 Cash paid for fractional shares 7 Fair value of Legacy Bank options converted 4,736 Total purchase price $ 91,230
Schedule of Business Acquisitions	(In thousands) Measured October 7, 2022 Assets: Cash and cash equivalents $ 41,001 Investment securities 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 (In thousands) Measured October 7, 2022 Assets: Cash and cash equivalents $ 31,805 Investment securities 327,852 Loans 544,694 Bank premises and equipment 29,370 Core deposit and other 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 (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 (In thousands) Measured Assets: Cash $ 98,107 Investment securities 992 Loans 477,215 Bank premises and equipment 2,577 Core deposit intangibles 3,454 Goodwill 30,978 Other assets 15,532 Total assets $ 628,855 Liabilities: Deposits 494,921 Other liabilities 42,705 Total liabilities $ 537,626
Schedule of Fair Value of Acquired Loans and Unpaid Principal Balance	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 49,756 46,326 Consumer 11,307 11,055 PPP loans 369 369 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 9,376 9,321 Consumer 59 61 PPP loans 1,959 1,959 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 17,797 17,501 Consumer 233 232 PPP loans 3,312 3,312 Total acquired loans $ 248,910 $ 246,152 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. August 6, 2021 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 37,558 $ 36,651 Commercial real estate - owner-occupied 35,765 35,363 Commercial real estate - non owner-occupied 241,322 237,091 Residential real estate 71,118 70,541 Commercial and financial 61,274 58,324 Consumer 647 647 PPP loans 38,598 38,598 Total acquired loans $ 486,282 $ 477,215
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) 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) January 3, 2022 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 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) August 6, 2021 Book balance of loans at acquisition $ 66,371 Allowance for credit losses at acquisition (3,046) Non-credit related discount (736) Total PCD loans acquired $ 62,589
Summary of Pro-Forma Data	Pro-forma data as of 2022 and 2021 present information as if the acquisitions of Legacy Bank, BBFC, Sabal Palm, Apollo and Drummond occurred at the beginning of 2021. 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. Twelve Months Ended December 31, (In thousands, except per share data) 2022 2021 Net interest income $ 448,139 $ 406,482 Net income available to common shareholders 161,274 191,862 EPS - basic 2.53 2.68 EPS - diluted 2.51 2.67

Significant Accounting Polici_3

Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2022 operating_segment
Accounting Policies [Line Items]
Number of operating segments	1
Stock options
Accounting Policies [Line Items]
Vesting period	5 years
Restricted Stock Units
Accounting Policies [Line Items]
Vesting period	3 years
Customer Relationships
Accounting Policies [Line Items]
Intangible assets, useful life	10 years
Minimum | Core Deposits
Accounting Policies [Line Items]
Intangible assets, useful life	6 years
Maximum | Core Deposits
Accounting Policies [Line Items]
Intangible assets, useful life	8 years
Building | Minimum
Accounting Policies [Line Items]
Bank premises and equipment, useful life	25 years
Building | Maximum
Accounting Policies [Line Items]
Bank premises and equipment, useful life	40 years
Leasehold Improvements | Minimum
Accounting Policies [Line Items]
Bank premises and equipment, useful life	5 years
Leasehold Improvements | Maximum
Accounting Policies [Line Items]
Bank premises and equipment, useful life	25 years
Furniture and Equipment | Minimum
Accounting Policies [Line Items]
Bank premises and equipment, useful life	3 years
Furniture and Equipment | Maximum
Accounting Policies [Line Items]
Bank premises and equipment, useful life	12 years

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Shares excluded from computation of diluted EPS (in shares)	1,505	0	508,000
Basic earnings per share
Net Income	$ 106,507	$ 124,403	$ 77,764
Total weighted average common stock outstanding (in shares)	63,707,000	56,586,000	53,502,000
Net income per share (in dollars per share)	$ 1.67	$ 2.20	$ 1.45
Diluted earnings per share
Net Income	$ 106,507	$ 124,403	$ 77,764
Total weighted average common stock outstanding (in shares)	63,707,000	56,586,000	53,502,000
Add: Dilutive effect of share-based awards outstanding (in shares)	557,000	502,000	428,000
Total weighted average diluted stock outstanding (in shares)	64,264,000	57,088,000	53,930,000
Net income per share (in dollars per share)	$ 1.66	$ 2.18	$ 1.44

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities Available for Sale and Held for Investment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt securities available-for-sale
Available for sale, amortized cost, total	$ 2,119,303	$ 1,653,658
Available for sale, gross unrealized gains	1,101	11,518
Available for sale, gross unrealized losses	(248,662)	(20,857)
Available for sale, fair value	1,871,742	1,644,319
Debt securities held-to-maturity
Held to maturity, amortized cost, total	747,408	638,640
Held to maturity, gross unrealized gains	64	3,828
Held to maturity, gross unrealized losses	(129,731)	(15,070)
Held to maturity, fair value	617,741	627,398
U.S. Treasury securities and obligations of U.S. government agencies
Debt securities available-for-sale
Available for sale, amortized cost, total	13,813	6,466
Available for sale, gross unrealized gains	173	316
Available for sale, gross unrealized losses	(339)	(3)
Available for sale, fair value	13,647	6,779
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Debt securities available-for-sale
Available for sale, amortized cost, total		1,234,721
Available for sale, gross unrealized gains	539	8,308
Available for sale, gross unrealized losses	(223,083)	(20,309)
Available for sale, fair value		1,222,720
Debt securities held-to-maturity
Held to maturity, amortized cost, total	747,408	638,640
Held to maturity, gross unrealized gains	64	3,828
Held to maturity, gross unrealized losses	(129,731)	(15,070)
Held to maturity, fair value		627,398
Private mortgage-backed securities and collateralized mortgage obligations
Debt securities available-for-sale
Available for sale, amortized cost, total		88,096
Available for sale, gross unrealized gains	70	1,091
Available for sale, gross unrealized losses	(12,831)	(420)
Available for sale, fair value		88,767
Collateralized loan obligations
Debt securities available-for-sale
Available for sale, amortized cost, total	313,155	292,751
Available for sale, gross unrealized gains	0	63
Available for sale, gross unrealized losses	(10,251)	(124)
Available for sale, fair value	302,904	292,690
Obligations of state and political subdivisions
Debt securities available-for-sale
Available for sale, amortized cost, total	29,350	31,624
Available for sale, gross unrealized gains	122	1,740
Available for sale, gross unrealized losses	(1,731)	(1)
Available for sale, fair value	27,741	$ 33,363
Other debt securities
Debt securities available-for-sale
Available for sale, amortized cost, total	22,640
Available for sale, gross unrealized gains	197
Available for sale, gross unrealized losses	(427)
Available for sale, fair value	$ 22,410

Securities - Additional Informa

Securities - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale debt securities, including legacy securities		$ 515,200,000	$ 102,100,000	$ 96,700,000
Gross gains from sale of securities			300,000	2,400,000
Gross losses from sale of securities			600,000	1,300,000
Securities transferred from available for sale to held to maturity	$ 210,800,000
Securities transferred from available for sale to held to maturity, net realized gains	$ 800,000
Unrealized losses		248,662,000	20,857,000
Fair value of mortgage backed securities of government sponsored entities		1,812,522,000	1,144,606,000
Other assets of Federal Home Loan Bank and Federal Reserve Bank		45,600,000
Accrued interest receivable on AFS debt securities		7,000,000	3,400,000
Accrued interest receivable on HTM debt securities		$ 1,300,000	$ 1,000,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]		Other assets	Other assets
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]		Other assets	Other assets
Shares held (in shares)		71,617,852	58,504,250
Common Class B | Visa
Debt Securities, Available-for-sale [Line Items]
Shares held (in shares)		11,330
Common Class A | Visa
Debt Securities, Available-for-sale [Line Items]
Conversion rate of Class A stock for each share of Class B stock (in shares)		$ 1.5991
Shares of class A Visa stock issued (in shares)		18,117
Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral		$ 484,200,000
CRA - qualified debt securities
Debt Securities, Available-for-sale [Line Items]
Gross gains from sale of securities				$ 100,000
Gross losses from sale of securities		1,100,000	$ 200,000
Equity securities		8,200,000	9,300,000
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Debt Securities, Available-for-sale [Line Items]
Unrealized losses		223,083,000	20,309,000
Fair value of mortgage backed securities of government sponsored entities		1,314,171,000	967,834,000
Held-to-maturity securities, allowance for credit loss		0
Private mortgage-backed securities and collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Unrealized losses		12,831,000	420,000
Fair value of mortgage backed securities of government sponsored entities		$ 155,722,000	43,268,000
Average credit support percentage		24%
Allowance for credit losses on AFS debt securities		$ 0
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Unrealized losses		10,251,000	124,000
Fair value of mortgage backed securities of government sponsored entities		302,904,000	132,663,000
Allowance for credit losses on AFS debt securities		$ 0
Collateralized loan obligations | Standard & Poor's, AAA Rating
Debt Securities, Available-for-sale [Line Items]
Number of positions held, percentage of total		38%
Collateralized loan obligations | Standard & Poor's, AA Rating
Debt Securities, Available-for-sale [Line Items]
Number of positions held, percentage of total		25%
Obligations of state and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Unrealized losses		$ 1,731,000	1,000
Fair value of mortgage backed securities of government sponsored entities		24,229,000	$ 499,000
Allowance for credit losses on AFS debt securities		0
Other debt securities
Debt Securities, Available-for-sale [Line Items]
Unrealized losses		427,000
Fair value of mortgage backed securities of government sponsored entities		$ 11,459,000
Average credit support percentage		8%
Allowance for credit losses on AFS debt securities		$ 0

Securities - Amortized Cost a_2

Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
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	747,408	$ 638,640
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	617,741	627,398
Amortized Cost
Due in less than one year	1,990
Due after one year through five years	17,509
Due after five years through ten years	3,123
Due after ten years	20,541
Available for sale loans with maturity date, amortized cost, total	43,163
Available for sale, amortized cost, total	2,119,303	1,653,658
Fair Value
Due in less than one year	2,087
Due after one year through five years	17,419
Due after five years through ten years	3,030
Due after ten years	18,852
Available for sale loans with maturity date, fair value, total	41,388
Securities available-for-sale (at fair value)	1,871,742	1,644,319
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Loans without single maturity date	747,408
Held to maturity, amortized cost, total	747,408	638,640
Fair Value
Loans without single maturity date	617,741
Held to maturity, fair value		627,398
Amortized Cost
Loans without single maturity date	1,561,197
Available for sale, amortized cost, total		1,234,721
Fair Value
Loans without single maturity date	1,338,653
Securities available-for-sale (at fair value)		1,222,720
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	179,148
Available for sale, amortized cost, total		88,096
Fair Value
Loans without single maturity date	166,387
Securities available-for-sale (at fair value)		88,767
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	313,155
Available for sale, amortized cost, total	313,155	292,751
Fair Value
Loans without single maturity date	302,904
Securities available-for-sale (at fair value)	302,904	$ 292,690
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	22,640
Available for sale, amortized cost, total	22,640
Fair Value
Loans without single maturity date	22,410
Securities available-for-sale (at fair value)	$ 22,410

Securities - Schedule of Unreal

Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value
Less Than 12 Months	$ 1,058,560	$ 1,113,319
12 Months or Longer	753,962	31,287
Total	1,812,522	1,144,606
Unrealized Losses
Less Than 12 Months	(73,965)	(19,831)
12 Months or Longer	(174,697)	(1,026)
Total	(248,662)	(20,857)
U.S. Treasury securities and obligations of U.S. government agencies
Fair Value
Less Than 12 Months	3,788	97
12 Months or Longer	249	245
Total	4,037	342
Unrealized Losses
Less Than 12 Months	(328)	(1)
12 Months or Longer	(11)	(2)
Total	(339)	(3)
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	646,651	955,881
12 Months or Longer	667,520	11,953
Total	1,314,171	967,834
Unrealized Losses
Less Than 12 Months	(54,956)	(19,575)
12 Months or Longer	(168,127)	(734)
Total	(223,083)	(20,309)
Private mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	130,488	33,640
12 Months or Longer	25,234	9,628
Total	155,722	43,268
Unrealized Losses
Less Than 12 Months	(8,255)	(173)
12 Months or Longer	(4,576)	(247)
Total	(12,831)	(420)
Collateralized loan obligations
Fair Value
Less Than 12 Months	242,370	123,202
12 Months or Longer	60,534	9,461
Total	302,904	132,663
Unrealized Losses
Less Than 12 Months	(8,343)	(81)
12 Months or Longer	(1,908)	(43)
Total	(10,251)	(124)
Obligations of state and political subdivisions
Fair Value
Less Than 12 Months	23,804	499
12 Months or Longer	425	0
Total	24,229	499
Unrealized Losses
Less Than 12 Months	(1,656)	(1)
12 Months or Longer	(75)	0
Total	(1,731)	$ (1)
Other debt securities
Fair Value
Less Than 12 Months	11,459
12 Months or Longer	0
Total	11,459
Unrealized Losses
Less Than 12 Months	(427)
12 Months or Longer	0
Total	$ (427)

Loans - Additional Information

Loans - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) Loan contract	Dec. 31, 2021 USD ($) contract	Dec. 31, 2020 USD ($) contract	Sep. 30, 2022 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	$ 8,144,724	$ 5,925,029
Accrued interest receivable	28,200	14,700
Loans to directors and executive officers	$ 400	600
New loans | Loan	2
Interest income on nonaccrual loans	$ 1,600	$ 1,200	$ 900
Number of loans modified in troubled debt restructurings | contract	9	12	10
Modified in troubled debt restructurings	$ 900	$ 800	$ 700
Allowance for credit loss on TDRs	$ 200
Number of loans under trouble debt restructuring | contract	3	3
Value of loans under trouble debt restructuring modified in preceding twelve months	$ 41	$ 200
Interest income related to impaired loans with impairment measured on present value of expected future cash flows	37	16	$ 100
Portfolio Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	5,944,193	4,929,672
Net deferred costs	35,100	28,600
PCD Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	234,782	126,939
Acquired Non-PCD Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	1,965,749	868,418
Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Remaining fair value adjustment for loans acquired	$ 97,700	$ 23,100
Percentage of fair value adjustment for loans acquired	4.30%	2.30%
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	$ 1,849,503	$ 1,425,354
Residential real estate | Portfolio Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	1,558,643	1,261,306
Residential real estate | PCD Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	19,482	7,091
Residential real estate | Acquired Non-PCD Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	271,378	156,957
Commercial real estate - non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	2,589,774	1,736,439
Commercial real estate - non-owner occupied | Portfolio Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	1,695,411	1,278,180
Commercial real estate - non-owner occupied | PCD Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	127,225	75,705
Commercial real estate - non-owner occupied | Acquired Non-PCD Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	767,138	382,554
Paycheck Protection Program
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	4,590	91,107
Paycheck Protection Program | Portfolio Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	1,474	69,503
Paycheck Protection Program | PCD Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0	0
Paycheck Protection Program | Acquired Non-PCD Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	$ 3,116	$ 21,604
Scenario, Adjustment | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans				$ (100,000)
Scenario, Adjustment | Commercial real estate - non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans				$ 100,000

Loans - Schedule of Portfolio L

Loans - Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 8,144,724	$ 5,925,029
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	587,332	230,824
Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,478,302	1,197,774
Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,589,774	1,736,439
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,849,503	1,425,354
Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,348,636	1,069,356
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	286,587	174,175
Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,590	91,107
Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,965,749	868,418
Acquired Non-PCD Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	201,333	31,438
Acquired Non-PCD Loans | Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	451,202	186,812
Acquired Non-PCD Loans | Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	767,138	382,554
Acquired Non-PCD Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	271,378	156,957
Acquired Non-PCD Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	182,124	84,395
Acquired Non-PCD Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	89,458	4,658
Acquired Non-PCD Loans | Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,116	21,604
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	234,782	126,939
PCD Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	21,100	45
PCD Loans | Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	31,946	27,445
PCD Loans | Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	127,225	75,705
PCD Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	19,482	7,091
PCD Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	15,238	16,643
PCD Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	19,791	10
PCD Loans | Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,944,193	4,929,672
Portfolio Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	364,900	199,341
Portfolio Loans | Commercial real estate - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	995,154	983,517
Portfolio Loans | Commercial real estate - non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,695,411	1,278,180
Portfolio Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,558,643	1,261,306
Portfolio Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,151,273	968,318
Portfolio Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	177,338	169,507
Portfolio Loans | Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,474	$ 69,503

Loans - Past Due Financing Rece

Loans - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans	$ 8,144,724	$ 5,925,029
Nonaccrual	28,843	30,598
Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,965,749	868,418
Nonaccrual	2,630	3,454
PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	234,782	126,939
Nonaccrual	10,563	11,322
Current
Financing Receivable, Past Due [Line Items]
Loans	8,104,803	5,888,713
Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,958,490	864,410
Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	222,282	115,617
Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	6,929	5,190
Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,104	317
Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,038	0
Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,301	407
Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,000	200
Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	359	0
Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	1,848	121
Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	525	37
Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	540	0
Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	587,332	230,824
Nonaccrual	615	259
Construction and land development | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	201,333	31,438
Nonaccrual	70	0
Construction and land development | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	21,100	45
Nonaccrual	420	5
Construction and land development | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	201,263	31,438
Construction and land development | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	20,680	40
Construction and land development | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	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	0	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	1,478,302	1,197,774
Nonaccrual	2,597	3,966
Commercial real estate - owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	451,202	186,812
Nonaccrual	0	0
Commercial real estate - owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	31,946	27,445
Nonaccrual	1,383	3,253
Commercial real estate - owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	450,109	186,652
Commercial real estate - owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	30,517	24,192
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	796	0
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	23	0
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	297	160
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	23	0
Commercial real estate - owner occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner occupied | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	2,589,774	1,736,439
Nonaccrual	4,184	5,905
Commercial real estate - non-owner occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	767,138	382,554
Nonaccrual	1,343	1,044
Commercial real estate - non-owner occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	127,225	75,705
Nonaccrual	3,110	3,263
Commercial real estate - non-owner occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	765,633	381,510
Commercial real estate - non-owner occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	124,115	72,442
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	162	0
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	1,849,503	1,425,354
Nonaccrual	9,109	13,045
Residential real estate | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	271,378	156,957
Nonaccrual	586	1,794
Residential real estate | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	19,482	7,091
Nonaccrual	1,587	1,705
Residential real estate | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	270,215	154,981
Residential real estate | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	17,885	5,386
Residential real estate | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	577	182
Residential real estate | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	10	0
Residential real estate | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Residential real estate | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	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	1,348,636	1,069,356
Nonaccrual	11,615	6,869
Commercial and financial | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	182,124	84,395
Nonaccrual	410	175
Commercial and financial | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	15,238	16,643
Nonaccrual	4,033	3,096
Commercial and financial | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	180,837	84,180
Commercial and financial | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	11,201	13,547
Commercial and financial | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	790	0
Commercial and financial | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	4	0
Commercial and financial | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	87	40
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	0	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	286,587	174,175
Nonaccrual	723	554
Consumer | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	89,458	4,658
Nonaccrual	221	441
Consumer | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	19,791	10
Nonaccrual	30	0
Consumer | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	87,317	4,082
Consumer | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	17,884	10
Consumer | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	779	135
Consumer | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,001	0
Consumer | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	616	0
Consumer | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	336	0
Consumer | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	525	0
Consumer | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	540	0
Paycheck Protection Program
Financing Receivable, Past Due [Line Items]
Loans	4,590	91,107
Paycheck Protection Program | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,116	21,604
Nonaccrual	0	0
Paycheck Protection Program | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Paycheck Protection Program | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	3,116	21,567
Paycheck Protection Program | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Paycheck Protection Program | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Paycheck Protection Program | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	37
Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	5,944,193	4,929,672
Nonaccrual	15,650	15,822
Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	5,924,031	4,908,686
Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,787	4,873
Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	942	207
Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	783	84
Portfolio Loans | Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	364,900	199,341
Nonaccrual	59	254
Portfolio Loans | Construction and land development | Current
Financing Receivable, Past Due [Line Items]
Loans	364,841	199,087
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	995,154	983,517
Nonaccrual	957	713
Portfolio Loans | Commercial real estate - owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	993,690	982,804
Portfolio Loans | Commercial real estate - owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial real estate - owner occupied | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	67	0
Portfolio Loans | Commercial real estate - owner occupied | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	440	0
Portfolio Loans | Commercial real estate - non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,695,411	1,278,180
Nonaccrual	30	1,598
Portfolio Loans | Commercial real estate - non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	1,695,381	1,276,582
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	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	1,558,643	1,261,306
Nonaccrual	7,284	9,546
Portfolio Loans | Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	1,550,040	1,248,160
Portfolio Loans | Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,172	3,457
Portfolio Loans | Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	147	143
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	1,151,273	968,318
Nonaccrual	7,229	3,598
Portfolio Loans | Commercial and financial | Current
Financing Receivable, Past Due [Line Items]
Loans	1,142,536	963,828
Portfolio Loans | Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,032	851
Portfolio Loans | Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	476	41
Portfolio Loans | Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans	177,338	169,507
Nonaccrual	91	113
Portfolio Loans | Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	176,444	168,791
Portfolio Loans | Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	550	565
Portfolio Loans | Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	252	23
Portfolio Loans | Consumer | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	1	15
Portfolio Loans | Paycheck Protection Program
Financing Receivable, Past Due [Line Items]
Loans	1,474	69,503
Nonaccrual	0	0
Portfolio Loans | Paycheck Protection Program | Current
Financing Receivable, Past Due [Line Items]
Loans	1,099	69,434
Portfolio Loans | Paycheck Protection Program | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	33	0
Portfolio Loans | Paycheck Protection Program | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Paycheck Protection Program | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	$ 342	$ 69

Loans - Schedule of Nonaccrual

Loans - Schedule of Nonaccrual Loans by Loan Category (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with no related allowance for credit losses	$ 17,755	$ 22,566
Nonaccrual loans with allowance for credit losses	11,088	8,032
Nonaccrual loans with no related allowance for credit losses, total loans	28,843	30,598
Nonaccrual loans, allowance for credit losses	2,905	3,804
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with no related allowance for credit losses	615	37
Nonaccrual loans with allowance for credit losses	0	222
Nonaccrual loans with no related allowance for credit losses, total loans	615	259
Nonaccrual loans, allowance for credit losses	0	92
Commercial real estate - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with no related allowance for credit losses	957	2,976
Nonaccrual loans with allowance for credit losses	1,641	990
Nonaccrual loans with no related allowance for credit losses, total loans	2,597	3,966
Nonaccrual loans, allowance for credit losses	41	419
Commercial real estate - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with no related allowance for credit losses	3,347	4,490
Nonaccrual loans with allowance for credit losses	837	1,415
Nonaccrual loans with no related allowance for credit losses, total loans	4,184	5,905
Nonaccrual loans, allowance for credit losses	230	27
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with no related allowance for credit losses	8,072	12,358
Nonaccrual loans with allowance for credit losses	1,036	687
Nonaccrual loans with no related allowance for credit losses, total loans	9,109	13,045
Nonaccrual loans, allowance for credit losses	58	357
Commercial and financial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with no related allowance for credit losses	4,724	2,676
Nonaccrual loans with allowance for credit losses	6,891	4,193
Nonaccrual loans with no related allowance for credit losses, total loans	11,615	6,869
Nonaccrual loans, allowance for credit losses	2,319	2,384
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with no related allowance for credit losses	40	29
Nonaccrual loans with allowance for credit losses	683	525
Nonaccrual loans with no related allowance for credit losses, total loans	723	554
Nonaccrual loans, allowance for credit losses	$ 257	$ 525

Loans - Schedule of Collateral

Loans - Schedule of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	$ 26,697	$ 35,716
Construction and land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	59	271
Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	2,733	4,706
Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	1,698	4,923
Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	11,333	16,334
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	10,448	8,741
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	$ 426	$ 741

Loans - Risk Categories of Loan

Loans - Risk Categories of Loans by Class of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 1,771,386	$ 1,563,032
One year prior to current fiscal year	1,972,420	745,584
Two years prior to current fiscal year	752,699	751,942
Three years prior to current fiscal year	749,534	581,648
Four years prior to current fiscal year	545,447	423,022
Prior	1,469,313	1,181,217
Revolving	883,925	678,584
Total	8,144,724	5,925,029
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	1,754,920	1,562,502
One year prior to current fiscal year	1,945,692	716,570
Two years prior to current fiscal year	722,206	729,697
Three years prior to current fiscal year	724,493	549,567
Four years prior to current fiscal year	529,942	408,614
Prior	1,430,636	1,125,909
Revolving	864,846	672,256
Total	7,972,735	5,765,115
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	16,461	530
One year prior to current fiscal year	17,132	22,138
Two years prior to current fiscal year	3,254	6,645
Three years prior to current fiscal year	13,718	993
Four years prior to current fiscal year	2,770	925
Prior	8,506	18,430
Revolving	3,927	2,607
Total	65,768	52,268
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	9,486	5,487
Two years prior to current fiscal year	20,935	5,632
Three years prior to current fiscal year	8,929	26,800
Four years prior to current fiscal year	8,650	6,701
Prior	14,073	22,515
Revolving	13,199	648
Total	75,272	67,783
Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	5	0
One year prior to current fiscal year	110	5,460
Two years prior to current fiscal year	6,304	9,968
Three years prior to current fiscal year	2,394	4,288
Four years prior to current fiscal year	4,085	6,782
Prior	16,098	14,363
Revolving	1,953	3,073
Total	30,949	43,934
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	237,727	94,318
One year prior to current fiscal year	219,469	23,860
Two years prior to current fiscal year	18,239	38,058
Three years prior to current fiscal year	27,753	25,729
Four years prior to current fiscal year	13,742	3,995
Prior	19,427	15,515
Revolving	50,975	29,349
Total	587,332	230,824
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	223,204	94,318
One year prior to current fiscal year	209,738	23,860
Two years prior to current fiscal year	18,239	38,058
Three years prior to current fiscal year	24,600	25,507
Four years prior to current fiscal year	12,783	3,995
Prior	19,022	15,466
Revolving	50,960	29,349
Total	558,546	230,553
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	14,523	0
One year prior to current fiscal year	452	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	3,153	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	15	0
Total	18,143	0
Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	9,227	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	959	0
Prior	0	0
Revolving	0	0
Total	10,186	0
Construction and land development | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	52	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	222
Four years prior to current fiscal year	0	0
Prior	405	49
Revolving	0	0
Total	457	271
Construction and land development | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Commercial real estate - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	216,147	205,404
One year prior to current fiscal year	251,638	160,959
Two years prior to current fiscal year	183,111	187,898
Three years prior to current fiscal year	192,625	133,312
Four years prior to current fiscal year	124,983	129,867
Prior	477,545	370,329
Revolving	32,253	10,005
Total	1,478,302	1,197,774
Commercial real estate - owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	215,453	205,404
One year prior to current fiscal year	251,638	154,432
Two years prior to current fiscal year	180,081	179,786
Three years prior to current fiscal year	185,286	132,353
Four years prior to current fiscal year	121,568	125,763
Prior	467,963	363,986
Revolving	32,253	10,005
Total	1,454,242	1,171,729
Commercial real estate - owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	694	0
One year prior to current fiscal year	0	6,527
Two years prior to current fiscal year	2,363	5,370
Three years prior to current fiscal year	4,403	649
Four years prior to current fiscal year	2,548	218
Prior	2,869	3,250
Revolving	0	0
Total	12,877	16,014
Commercial real estate - owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	667	0
Three years prior to current fiscal year	2,625	0
Four years prior to current fiscal year	573	3,290
Prior	4,444	1,610
Revolving	0	0
Total	8,309	4,900
Commercial real estate - owner occupied | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	2,742
Three years prior to current fiscal year	311	310
Four years prior to current fiscal year	294	596
Prior	2,269	1,483
Revolving	0	0
Total	2,874	5,131
Commercial real estate - owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Commercial real estate - non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	593,364	395,308
One year prior to current fiscal year	546,911	213,644
Two years prior to current fiscal year	252,787	303,723
Three years prior to current fiscal year	338,460	209,545
Four years prior to current fiscal year	233,622	113,505
Prior	589,304	494,237
Revolving	35,326	6,477
Total	2,589,774	1,736,439
Commercial real estate - non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	593,364	395,308
One year prior to current fiscal year	530,462	207,824
Two years prior to current fiscal year	231,693	298,021
Three years prior to current fiscal year	331,173	186,339
Four years prior to current fiscal year	228,077	110,990
Prior	575,656	460,435
Revolving	35,326	6,477
Total	2,525,751	1,665,394
Commercial real estate - non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	16,257	0
Two years prior to current fiscal year	735	844
Three years prior to current fiscal year	5,438	0
Four years prior to current fiscal year	0	289
Prior	4,975	13,850
Revolving	0	0
Total	27,405	14,983
Commercial real estate - non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	192	4,776
Two years prior to current fiscal year	19,315	3,009
Three years prior to current fiscal year	0	23,206
Four years prior to current fiscal year	5,515	1,900
Prior	7,412	17,266
Revolving	0	0
Total	32,434	50,157
Commercial real estate - non-owner occupied | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	1,044
Two years prior to current fiscal year	1,044	1,849
Three years prior to current fiscal year	1,849	0
Four years prior to current fiscal year	30	326
Prior	1,261	2,686
Revolving	0	0
Total	4,184	5,905
Commercial real estate - non-owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	270,054	394,547
One year prior to current fiscal year	552,950	114,853
Two years prior to current fiscal year	122,062	91,290
Three years prior to current fiscal year	77,132	119,945
Four years prior to current fiscal year	98,008	123,029
Prior	302,994	224,122
Revolving	426,303	357,568
Total	1,849,503	1,425,354
Residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	270,054	394,547
One year prior to current fiscal year	552,950	114,364
Two years prior to current fiscal year	121,879	90,566
Three years prior to current fiscal year	77,100	119,836
Four years prior to current fiscal year	97,900	118,556
Prior	292,867	213,950
Revolving	423,764	354,439
Total	1,836,514	1,406,258
Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	50	0
Three years prior to current fiscal year	0	70
Four years prior to current fiscal year	25	0
Prior	269	1,243
Revolving	884	532
Total	1,228	1,845
Residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	340
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	58
Prior	343	422
Revolving	85	86
Total	428	906
Residential real estate | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	149
Two years prior to current fiscal year	133	724
Three years prior to current fiscal year	32	39
Four years prior to current fiscal year	83	4,415
Prior	9,515	8,507
Revolving	1,570	2,511
Total	11,333	16,345
Residential real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Commercial and financial
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	361,082	341,356
One year prior to current fiscal year	320,855	196,831
Two years prior to current fiscal year	146,607	104,238
Three years prior to current fiscal year	84,487	75,757
Four years prior to current fiscal year	63,364	42,389
Prior	63,135	60,874
Revolving	309,106	247,911
Total	1,348,636	1,069,356
Commercial and financial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	359,833	340,826
One year prior to current fiscal year	320,307	180,677
Two years prior to current fiscal year	140,450	97,072
Three years prior to current fiscal year	77,562	68,232
Four years prior to current fiscal year	57,924	39,331
Prior	58,648	56,053
Revolving	292,818	246,568
Total	1,307,542	1,028,759
Commercial and financial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	1,244	530
One year prior to current fiscal year	423	15,587
Two years prior to current fiscal year	106	0
Three years prior to current fiscal year	474	237
Four years prior to current fiscal year	195	251
Prior	259	84
Revolving	2,998	876
Total	5,699	17,565
Commercial and financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	67	371
Two years prior to current fiscal year	942	2,605
Three years prior to current fiscal year	6,304	3,594
Four years prior to current fiscal year	1,603	1,436
Prior	1,683	3,217
Revolving	13,114	339
Total	23,713	11,562
Commercial and financial | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	5	0
One year prior to current fiscal year	58	196
Two years prior to current fiscal year	5,109	4,561
Three years prior to current fiscal year	147	3,694
Four years prior to current fiscal year	3,642	1,371
Prior	2,545	1,520
Revolving	176	128
Total	11,682	11,470
Commercial and financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	93,012	45,063
One year prior to current fiscal year	77,889	31,366
Two years prior to current fiscal year	28,011	26,735
Three years prior to current fiscal year	29,077	17,360
Four years prior to current fiscal year	11,728	10,237
Prior	16,908	16,140
Revolving	29,962	27,274
Total	286,587	174,175
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	93,012	45,063
One year prior to current fiscal year	77,889	31,342
Two years prior to current fiscal year	27,982	26,194
Three years prior to current fiscal year	28,772	17,300
Four years prior to current fiscal year	11,690	9,979
Prior	16,480	16,019
Revolving	29,725	25,418
Total	285,550	171,315
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	24
Two years prior to current fiscal year	0	431
Three years prior to current fiscal year	250	37
Four years prior to current fiscal year	2	167
Prior	134	3
Revolving	30	1,199
Total	416	1,861
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	11	18
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	17
Prior	191	0
Revolving	0	223
Total	202	258
Consumer | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	18	92
Three years prior to current fiscal year	55	23
Four years prior to current fiscal year	36	74
Prior	103	118
Revolving	207	434
Total	419	741
Consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Paycheck Protection Program
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	87,036
One year prior to current fiscal year	2,708	4,071
Two years prior to current fiscal year	1,882	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	4,590	91,107
Paycheck Protection Program | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	87,036
One year prior to current fiscal year	2,708	4,071
Two years prior to current fiscal year	1,882	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	$ 4,590	$ 91,107

Allowance for Credit Losses - A

Allowance for Credit Losses - Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 83,315	$ 92,733	$ 35,154
Initial Allowance on PCD Loans Acquired During the Period	5,275	3,046	6,279
Provision for Loan Losses	26,183	(9,421)	37,779
Charge- Offs	(2,911)	(6,098)	(9,842)
Recoveries	2,070	3,071	2,251
TDR Allowance Adjustments	(37)	(16)	(114)
Ending Balance	113,895	83,315	92,733
Provision for credit losses on accrued interest receivable			400
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,751	4,920	1,842
Initial Allowance on PCD Loans Acquired During the Period	518	0	87
Provision for Loan Losses	3,127	(2,300)	1,399
Charge- Offs	0	0	0
Recoveries	68	133	114
TDR Allowance Adjustments	0	(2)	(1)
Ending Balance	6,464	2,751	4,920
Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	8,579	9,868	5,361
Initial Allowance on PCD Loans Acquired During the Period	38	0	1,161
Provision for Loan Losses	(2,566)	(1,289)	3,632
Charge- Offs	0	0	(310)
Recoveries	0	0	18
TDR Allowance Adjustments	0	0	(74)
Ending Balance	6,051	8,579	9,868
Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	36,617	38,266	7,863
Initial Allowance on PCD Loans Acquired During the Period	880	1,327	2,236
Provision for Loan Losses	5,871	(1,664)	18,966
Charge- Offs	(179)	(1,327)	(177)
Recoveries	69	15	37
TDR Allowance Adjustments	0	0	0
Ending Balance	43,258	36,617	38,266
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	12,811	17,500	7,667
Initial Allowance on PCD Loans Acquired During the Period	229	0	124
Provision for Loan Losses	16,284	(5,822)	3,840
Charge- Offs	(84)	(57)	(240)
Recoveries	393	1,196	350
TDR Allowance Adjustments	(28)	(6)	(28)
Ending Balance	29,605	12,811	17,500
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	19,744	18,690	9,716
Initial Allowance on PCD Loans Acquired During the Period	1,699	1,719	2,643
Provision for Loan Losses	(5,367)	2,292	8,329
Charge- Offs	(1,233)	(3,987)	(7,091)
Recoveries	807	1,030	1,416
TDR Allowance Adjustments	(2)	0	0
Ending Balance	15,648	19,744	18,690
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,813	3,489	2,705
Initial Allowance on PCD Loans Acquired During the Period	1,911	0	28
Provision for Loan Losses	8,834	(638)	1,613
Charge- Offs	(1,415)	(727)	(2,024)
Recoveries	733	697	316
TDR Allowance Adjustments	(7)	(8)	(11)
Ending Balance	$ 12,869	$ 2,813	3,489
Impact of Adoption of ASC 326
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance			21,226
Impact of Adoption of ASC 326 | Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance			1,479
Impact of Adoption of ASC 326 | Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance			80
Impact of Adoption of ASC 326 | Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance			9,341
Impact of Adoption of ASC 326 | Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance			5,787
Impact of Adoption of ASC 326 | Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance			3,677
Impact of Adoption of ASC 326 | Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance			$ 862

Allowance for Credit Losses - S

Allowance for Credit Losses - Schedule of Loan Portfolio, Excluding PCI Loans and Related Allowance (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Recorded Investment
Individually Evaluated	$ 31,514	$ 39,863
Collectively Evaluated	8,113,210	5,885,166
Total	8,144,724	5,925,029
Associated Allowance
Individually Evaluated	3,547	4,754
Collectively Evaluated	110,348	78,561
Total	113,895	83,315	$ 92,733	$ 35,154
Construction and land development
Recorded Investment
Individually Evaluated	59	271
Collectively Evaluated	587,273	230,553
Total	587,332	230,824
Associated Allowance
Individually Evaluated	0	92
Collectively Evaluated	6,464	2,659
Total	6,464	2,751	4,920	1,842
Commercial real estate - owner occupied
Recorded Investment
Individually Evaluated	3,346	5,131
Collectively Evaluated	1,474,956	1,192,643
Total	1,478,302	1,197,774
Associated Allowance
Individually Evaluated	41	419
Collectively Evaluated	6,010	8,160
Total	6,051	8,579	9,868	5,361
Commercial real estate - non-owner occupied
Recorded Investment
Individually Evaluated	4,183	5,905
Collectively Evaluated	2,585,591	1,730,534
Total	2,589,774	1,736,439
Associated Allowance
Individually Evaluated	230	27
Collectively Evaluated	43,028	36,590
Total	43,258	36,617	38,266	7,863
Residential real estate
Recorded Investment
Individually Evaluated	11,333	16,345
Collectively Evaluated	1,838,170	1,409,009
Total	1,849,503	1,425,354
Associated Allowance
Individually Evaluated	275	646
Collectively Evaluated	29,330	12,165
Total	29,605	12,811	17,500	7,667
Commercial and financial
Recorded Investment
Individually Evaluated	12,167	11,470
Collectively Evaluated	1,336,469	1,057,886
Total	1,348,636	1,069,356
Associated Allowance
Individually Evaluated	2,639	2,885
Collectively Evaluated	13,009	16,859
Total	15,648	19,744	18,690	9,716
Consumer
Recorded Investment
Individually Evaluated	426	741
Collectively Evaluated	286,161	173,434
Total	286,587	174,175
Associated Allowance
Individually Evaluated	362	685
Collectively Evaluated	12,507	2,128
Total	12,869	2,813	$ 3,489	$ 2,705
Paycheck Protection Program
Recorded Investment
Individually Evaluated	0	0
Collectively Evaluated	4,590	91,107
Total	4,590	91,107
Associated Allowance
Individually Evaluated	0	0
Collectively Evaluated	0	0
Total	$ 0	$ 0

Derivatives - Additional Inform

Derivatives - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) contract
Derivative [Line Items]
Amount expected to be reclassified from accumulated other comprehensive income into interest income	$ 500
Back-to-Back Swaps
Derivative [Line Items]
Notional amount	$ 312,808	$ 175,392
Weighted average maturity (in years)	6 years 8 months 12 days	6 years 8 months 12 days
Back-to-Back Swaps | Other Assets and Other Liabilities
Derivative [Line Items]
Fair value of derivatives assets and liabilities	$ 23,140	$ 8,022
Interest Rate Floor
Derivative [Line Items]
Notional amount	300,000	300,000
Number of derivative contracts | contract			2
Interest Rate Floor | Loan Interest Income
Derivative [Line Items]
Loss recognized in OCI	300	700
Reclassification from AOCI into income	400	200
Interest Rate Floor | Other Assets
Derivative [Line Items]
Fair value of derivatives assets and liabilities	2	290
Fair value of derivative assets	$ 2	$ 300
Interest Rate Floor, November 2023 Maturity
Derivative [Line Items]
Notional amount			$ 150,000
Interest Rate Floor, October 2023 Maturity
Derivative [Line Items]
Notional amount			$ 150,000

Derivatives - Schedule of Deriv

Derivatives - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Back-to-back swaps
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	$ 312,808	$ 175,392
Back-to-back swaps | Other Assets and Other Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Fair Value	23,140	8,022
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	$ 2	$ 290

Bank Premises and Equipment - S

Bank Premises and Equipment - Summary of Bank Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Cost	$ 178,801	$ 129,854
Accumulated Depreciation & Amortization	(61,909)	(57,450)
Net Carrying Value	116,892	72,404
Land	37,516	23,359
Premises
Property, Plant and Equipment [Line Items]
Cost	138,447	95,810
Accumulated Depreciation & Amortization	(33,037)	(30,913)
Net Carrying Value	105,410	64,897
Furniture and Equipment
Property, Plant and Equipment [Line Items]
Cost	40,354	34,044
Accumulated Depreciation & Amortization	(28,872)	(26,537)
Net Carrying Value	$ 11,482	$ 7,507

Goodwill and Acquired Intangi_3

Goodwill and Acquired Intangible Assets - Changes In Carrying Amount Of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Beginning of year	$ 252,154	$ 221,176	$ 205,286
Changes from business combinations	228,165	30,978	15,890
Total	$ 480,319	$ 252,154	$ 221,176

Goodwill and Acquired Intangi_4

Goodwill and Acquired Intangible Assets - Gross Carrying Amount and Accumulated Amortization of Intangible Asset (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finite-lived Intangible Assets [Roll Forward]
Beginning of year	$ 12,998	$ 14,577	$ 18,305
Acquired CDI, including measurement period adjustments	67,388	3,454	2,129
Amortization expense	(9,101)	(5,033)	(5,857)
End of year	$ 71,285	$ 12,998	$ 14,577
Remaining average amortization period for CDI	49 months	39 months	44 months

Goodwill and Acquired Intangi_5

Goodwill and Acquired Intangible Assets - Acquired Intangible Assets Consist of Core Deposit Intangibles (Details) - Core deposit intangible - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 97,778	$ 41,596
Accumulated Amortization	$ (26,493)	$ (28,598)

Goodwill and Acquired Intangi_6

Goodwill and Acquired Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Estimated amortization expense, next year	$ 17.7
Estimated amortization expense in two years	13.4
Estimated amortization expense in three years	11.3
Estimated amortization expense in four years	9.4
Estimated amortization expense in five years	7.7
Mortgage service rights retained from sale of SBA	$ 1.7	$ 1.8
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	10 years
Customer Relationships | Drummond Banking Company
Finite-Lived Intangible Assets [Line Items]
Fair value of finite-lived intangible assets	$ 2.6
Intangible assets, useful life	10 years

Borrowings - Federal Funds Purc

Borrowings - Federal Funds Purchased and Securities Sold Under Agreements to Repurchase (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Maximum amount outstanding at any month end	$ 172,029	$ 124,101	$ 119,609
Weighted average interest rate at end of year	1.89%	0.12%	0.16%
Average amount outstanding	$ 121,318	$ 113,881	$ 84,514
Weighted average interest rate during the year	0.81%	0.12%	0.33%

Borrowings - Schedule of Collat

Borrowings - Schedule of Collateral Type and Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Short-term Debt [Line Items]
Fair value of pledged securities - overnight and continuous:	$ 184,967	$ 134,577	$ 137,268

Borrowings - Additional Informa

Borrowings - Additional Information (Details) - USD ($)		12 Months Ended
	Oct. 07, 2022	Dec. 31, 2022
Debt Instrument [Line Items]
Secured lines of credit		$ 2,400,000,000
Average interest rate on Federal Home Loan Bank borrowings		3.22%
Weighted average interest rate on balances outstanding		3.42%
Subordinated Debt
Debt Instrument [Line Items]
Debt	$ 12,300,000
Interest rate	5.50%
Fair value adjustment	$ 400,000
Subordinated Debt | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate	5.33%
Secured Lines of Credit
Debt Instrument [Line Items]
Advances from Federal Home Loan Banks		$ 150,000,000
Trust I & II
Debt Instrument [Line Items]
Junior subordinated deferrable interest notes issued		41,200,000
SBCF Statutory Trust III
Debt Instrument [Line Items]
Junior subordinated deferrable interest notes issued		$ 12,400,000

Borrowings - Schedule of Junior

Borrowings - Schedule of Junior Subordinated Debentures and Related Trust Preferred and Common Equity Securities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Junior subordinated debt	$ 75,261
Trust preferred securities	73,000
Common equity securities	2,261
Unamortized debt discount	5,600
SBCF Capital Trust I
Debt Instrument [Line Items]
Junior subordinated debt	20,619
Trust preferred securities	20,000
Common equity securities	$ 619
Interest rate on junior subordinated loans	6.50%
SBCF Capital Trust I | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
SBCF Statutory Trust II
Debt Instrument [Line Items]
Junior subordinated debt	$ 20,619
Trust preferred securities	20,000
Common equity securities	$ 619
Interest rate on junior subordinated loans	6.10%
SBCF Statutory Trust II | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.33%
SBCF Statutory Trust III
Debt Instrument [Line Items]
Junior subordinated debt	$ 12,372
Trust preferred securities	12,000
Common equity securities	$ 372
Interest rate on junior subordinated loans	6.12%
SBCF Statutory Trust III | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.35%
The BANKshares, Inc. Statutory Trust I
Debt Instrument [Line Items]
Junior subordinated debt	$ 5,155
Trust preferred securities	5,000
Common equity securities	$ 155
Interest rate on junior subordinated loans	7.97%
The BANKshares, Inc. Statutory Trust I | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
The BANKshares, Inc. Statutory Trust II
Debt Instrument [Line Items]
Junior subordinated debt	$ 4,124
Trust preferred securities	4,000
Common equity securities	$ 124
Interest rate on junior subordinated loans	7.53%
The BANKshares, Inc. Statutory Trust II | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.79%
The BANKshares, Inc. Capital Trust I
Debt Instrument [Line Items]
Junior subordinated debt	$ 5,155
Trust preferred securities	5,000
Common equity securities	$ 155
Interest rate on junior subordinated loans	6.08%
The BANKshares, Inc. Capital Trust I | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.39%
Grand Bank Capital Trust I
Debt Instrument [Line Items]
Junior subordinated debt	$ 7,217
Trust preferred securities	7,000
Common equity securities	$ 217
Interest rate on junior subordinated loans	6.71%
Grand Bank Capital Trust I | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.98%

Employee Benefits and Stock C_3

Employee Benefits and Stock Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Oct. 07, 2022	Jan. 03, 2022	Aug. 06, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Oct. 31, 2022	Jan. 31, 2022	Aug. 31, 2021	May 26, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined contribution plan charges to operations				$ 3,500	$ 3,100	$ 2,800
Share-based compensation expense				$ 11,155	$ 8,685	$ 7,304
Number of shares authorized for repurchase (in shares)				100,000,000
Percent of fair market value that employees may purchase shares				95%
Legacy Bank of Florida
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options and warrants converted			$ 4,736
Business Bank of Florida
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options and warrants converted		$ 497
Sabal Palm Bancorp, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options and warrants converted		$ 3,336
Apollo Bancshares, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options and warrants converted	$ 6,530
Warrants weighted average exercise price (in dollars per share)	$ 9.94
2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares)										1,750,000
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for repurchase (in shares)				800,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				5 years
Maximum term				10 years
Shares granted (in shares)				553,803	356,497
Weighted-average exercise price, granted (in dollars per share)				$ 14.28
Fair value of options and warrants converted				$ 10,400	$ 4,700
Stock options | Business Bank of Florida
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)		52,432
Weighted-average exercise price, granted (in dollars per share)		$ 26.63
Stock options | Sabal Palm Bancorp, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)		188,253
Weighted-average exercise price, granted (in dollars per share)		$ 17.84
Stock options | Apollo Bancshares, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	274,373
Weighted-average exercise price, granted (in dollars per share)	$ 9.94
Stock options | 2022 Acquisitions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)				552,298
Stock options | 2021 Acquisitions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)					356,497
Stock options | 2021 Plan | Legacy Bank of Florida
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares)									356,497
Shares granted (in shares)					356,497
Weighted-average exercise price, granted (in dollars per share)					$ 16.70
Fair value of options and warrants converted					$ 4,700
Share-based compensation expense					$ 900
Stock options | 2021 Plan | Business Bank of Florida
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares)								52,432
Fair value of options and warrants converted		$ 500
Stock options | 2021 Plan | Sabal Palm Bancorp, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares)								188,253
Fair value of options and warrants converted		$ 3,300
Stock options | 2021 Plan | Apollo Bancshares, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares)							274,373
Warrant | Apollo Bancshares, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	37,240
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years
Shares granted (in shares)				422,745	218,695	379,869
Granted (in shares)				422,745
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years
Shares granted (in shares)				121,025	103,073	171,287
Granted (in shares)				121,025
Restricted Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target award percentage				0%	0%
Restricted Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target award percentage				225%	225%

Employee Benefits and Stock C_4

Employee Benefits and Stock Compensation - Impact of Shared-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 11,155	$ 8,685	$ 7,304
Income tax benefit	(2,827)	(2,067)	$ (1,737)
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options and warrants converted	$ 10,400	$ 4,700

Employee Benefits and Stock C_5

Employee Benefits and Stock Compensation - Summary of Unrecognized Compensation Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 15,811
Weighted-Average Period Remaining (Years)	1 year 10 months 6 days
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 11,834
Weighted-Average Period Remaining (Years)	1 year 9 months 18 days
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 3,977
Weighted-Average Period Remaining (Years)	1 year 11 months 23 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 0

Employee Benefits and Stock C_6

Employee Benefits and Stock Compensation - Summary of Status of Restricted Stock and Restricted Stock Units (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Restricted Stock Awards
Restricted Award Shares
Non-vested beginning balance (in shares) | shares	398,704
Granted (in shares) | shares	422,745
Forfeited/Cancelled (in shares) | shares	(34,387)
Vested (in shares) | shares	(253,787)
Non-vested ending balance (in shares) | shares	533,275
Weighted-Average Grant-Date Fair Value
Non-vested at beginning of period (in dollars per share) | $ / shares	$ 26.68
Granted (in dollars per share) | $ / shares	33.08
Forfeited/Canceled (in dollars per share) | $ / shares	29.88
Vested (in dollars per share) | $ / shares	27.28
Non-vested at ending of period (in dollars per share) | $ / shares	$ 31.26
Restricted Stock Units
Restricted Award Shares
Non-vested beginning balance (in shares) | shares	285,221
Granted (in shares) | shares	121,025
Forfeited/Cancelled (in shares) | shares	(20,824)
Vested (in shares) | shares	(75,388)
Non-vested ending balance (in shares) | shares	310,034
Weighted-Average Grant-Date Fair Value
Non-vested at beginning of period (in dollars per share) | $ / shares	$ 26.71
Granted (in dollars per share) | $ / shares	34.11
Forfeited/Canceled (in dollars per share) | $ / shares	26.29
Vested (in dollars per share) | $ / shares	30.57
Non-vested at ending of period (in dollars per share) | $ / shares	$ 28.69

Employee Benefits and Stock C_7

Employee Benefits and Stock Compensation - Summary of Restricted Stock and Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	422,745	218,695	379,869
Weighted-average grant date fair value (in dollars per share)	$ 33.08	$ 35.08	$ 18.36
Fair value of awards vested	$ 6,923	$ 4,731	$ 3,745
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	121,025	103,073	171,287
Weighted-average grant date fair value (in dollars per share)	$ 34.11	$ 35.24	$ 17.29
Fair value of awards vested	$ 2,305	$ 1,936	$ 2,962

Employee Benefits and Stock C_8

Employee Benefits and Stock Compensation - Summary of the Fair Value of Each Option Grant on the Date of Grant (Details) - Stock options	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rates	2.21%	0.12%
Expected dividend yield	1.95%	1.65%
Expected volatility	32.09%	36.87%
Expected lives (years)	1 year	1 year

Employee Benefits and Stock C_9

Employee Benefits and Stock Compensation - Summary of Stock Options Outstanding and Exercisable (Details) - Stock options - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Options
Options, outstanding at beginning of period (in shares)	810,180
Options granted (in shares)	553,803	356,497
Options, exercised (in shares)	(522,126)
Options, forfeited (in shares)	(4,235)
Options, outstanding at end of period (in shares)	837,622	810,180
Options, exercisable at end of period (in shares)	837,622
Weighted-Average Exercise Price
Weighted-average exercise price at beginning of period (in dollars per share)	$ 22.02
Weighted-average exercise price, granted (in dollars per share)	14.28
Weighted-average exercise price, exercised (in dollars per share)	13.05
Weighted-average exercise price, forfeited (in dollars per share)	30.16
Weighted-average exercise price at end of period (in dollars per share)	21.72	$ 22.02
Weighted-average exercise price, exercisable at end of period (in dollars per share)	$ 21.72
Weighted- Average Remaining Contractual Term and Aggregate Intrinsic Value
Weighted-average remaining contractual term, outstanding	3 years 3 months
Weighted-average remaining contractual term, exercisable	3 years 3 months
Aggregate intrinsic value, outstanding	$ 7,936
Aggregate intrinsic value, exercisable	$ 7,936

Employee Benefits and Stock _10

Employee Benefits and Stock Compensation - Summary of Stock Options (Details) - Stock options - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	553,803	356,497
Weighted-average grant date fair value (in dollars per share)	$ 14.28	$ 16.70
Intrinsic value of stock options exercised, in thousands	$ 8,860	$ 5,808	$ 830

Employee Benefits and Stock _11

Employee Benefits and Stock Compensation - Summary of Information Related to Stock Options (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares) | shares	837,622
Remaining Contractual Life (Years)	3 years 3 months
Options exercisable (in shares) | shares	837,622
Weighted average exercise price (in dollars per share)	$ 21.72
$5.88 to $14.82
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of exercise prices, lower limit (in dollars per share)	5.88
Range of exercise prices, upper limit (in dollars per share)	$ 14.82
Options outstanding (in shares) | shares	323,241
Remaining Contractual Life (Years)	1 year 4 months 24 days
Options exercisable (in shares) | shares	323,241
Weighted average exercise price (in dollars per share)	$ 11.83
$15.80 to $28.69
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of exercise prices, lower limit (in dollars per share)	15.80
Range of exercise prices, upper limit (in dollars per share)	$ 28.69
Options outstanding (in shares) | shares	332,939
Remaining Contractual Life (Years)	4 years 2 months 8 days
Options exercisable (in shares) | shares	332,939
Weighted average exercise price (in dollars per share)	$ 26.19
$29.38 to $35.78
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of exercise prices, lower limit (in dollars per share)	29.38
Range of exercise prices, upper limit (in dollars per share)	$ 35.78
Options outstanding (in shares) | shares	181,442
Remaining Contractual Life (Years)	4 years 9 months 29 days
Options exercisable (in shares) | shares	181,442
Weighted average exercise price (in dollars per share)	$ 31.15

Employee Benefits and Stock _12

Employee Benefits and Stock Compensation - Employee Stock Purchase Plan (Details) - ESPP - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	20,972	14,834	19,713
Weighted-average employee purchase price (in dollars per share)	$ 30.76	$ 32.43	$ 20.68

Lease Commitments - Lease Cost

Lease Commitments - Lease Cost Information Related to Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease cost	$ 8,111	$ 5,872	$ 5,738
Variable lease cost	1,599	996	1,325
Short-term lease cost	427	564	497
Sublease income	(704)	(601)	(684)
Total lease cost	$ 9,433	$ 6,831	$ 6,876

Lease Commitments - Supplementa

Lease Commitments - Supplemental Balance Sheet and Cash Flow Information Related to Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 47,500	$ 35,256
Other assets	Other assets	Other assets
Operating lease liabilities	$ 50,770	$ 38,330
Other liabilities	Other liabilities	Other liabilities	Other liabilities
Cash paid during the year for amounts included in the measurement of operating lease liabilities	$ 16,508	$ 11,117
Right-of-use assets recorded during the year in exchange for new or renewed operating lease obligations	5,305	12,459
Right-of-use assets obtained during the year through bank acquisition	$ 14,597	$ 2,606
Weighted average remaining lease term for operating leases	8 years	8 years 3 months 18 days
Weighted average discount rate for operating leases	4.64%	4.25%

Lease Commitments - Maturities

Lease Commitments - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2023	$ 8,880
2024	8,646
2025	8,035
2026	7,045
2027	6,355
Thereafter	21,205
Total undiscounted cash flows	60,166
Less: Net present value adjustment	(9,396)
Total	$ 50,770	$ 38,330

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Expense Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current
Federal	$ 2,770	$ 23,661	$ 21,688
State	(1,266)	3,882	4,471
Deferred
Federal	23,710	6,800	(2,697)
State	6,415	(8)	(644)
Total income tax provision	$ 31,629	$ 34,335	$ 22,818

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Expected Tax Benefit with Pretax Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Tax rate applied to income before income taxes	$ 29,009	$ 33,335	$ 21,122
Increase (decrease) resulting from the effects of:
Tax law change	0	0	(375)
Nondeductible acquisition costs	924	419	199
Tax exempt interest on loans, obligations of states and political subdivisions and bank owned life insurance	(1,341)	(1,276)	(1,110)
State income taxes	(1,081)	(813)	(804)
Tax credit investments	(406)	(213)	(72)
Stock compensation	(992)	(1,239)	(111)
Executive compensation disallowance	402	253	0
Other	(36)	(5)	142
Federal tax provision	26,479	30,461	18,991
State tax provision	5,150	3,874	3,827
Total income tax provision	$ 31,629	$ 34,335	$ 22,818

Income Taxes - Summary of Net D

Income Taxes - Summary of Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Assets, Gross [Abstract]
Allowance for credit losses	$ 31,097	$ 22,686
Other real estate owned	591	52
Accrued stock compensation	2,931	2,323
Federal tax loss carryforward	3,150	2,138
State tax loss carryforward	1,117	1,226
Lease liabilities	12,868	9,399
Net unrealized securities losses	59,392	2,287
Deferred compensation	2,766	3,276
Accrued interest and fee income	16,035	0
Other	1,755	477
Gross deferred tax assets	131,702	43,864
Less: Valuation allowance	0	0
Deferred tax assets net of valuation allowance	131,702	43,864
Deferred Tax Liabilities, Gross [Abstract]
Core deposit base intangible	(18,767)	(3,134)
Accrued interest and fee income	0	(1,660)
Premises and equipment	(2,214)	(776)
Right of use assets	(12,039)	(8,645)
Other	(4,225)	(2,328)
Gross deferred tax liabilities	(37,245)	(16,543)
Net deferred tax assets	$ 94,457	$ 27,321

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Unrealized losses resulting in deferred tax asset		$ (247,400,000)	$ (9,300,000)
Deferred tax assets from unrealized losses on certain investments in debt securities		59,392,000	2,287,000
Net deferred tax assets		94,457,000	27,321,000
Deferred tax assets		94,457,000	27,321,000
Accrual for income tax interest or penalties		0
Income tax benefit related to share-based compensation		1,100,000	900,000	$ 100,000
Amortization reflected as income expense related to affordable housing project investments		2,500,000	1,600,000	900,000
Affordable housing project tax credits		2,000,000	1,200,000	800,000
Affordable housing project tax benefits		1,000,000	700,000	200,000
Carrying value of affordable housing tax credits		27,300,000	30,100,000
Affordable housing tax credits, unfunded amounts		17,600,000	23,200,000
Unrecognized income tax benefits		0
Tax expense (benefit) from change in enacted tax rate		29,009,000	33,335,000	21,122,000
Income tax benefit from CARES act		0	0	$ 375,000
U.S. Federal
Operating Loss Carryforwards [Line Items]
Net deferred tax assets		76,800,000
Deferred tax assets		3,100,000	20,800,000
State
Operating Loss Carryforwards [Line Items]
Net deferred tax assets		17,700,000
Deferred tax assets		$ 1,100,000	6,500,000
Tax expense (benefit) from change in enacted tax rate	$ 1,100,000		$ (800,000)

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Required Regulatory Capital (Details) $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Parent Company
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Risk-Based Capital Ratio (to risk-weighted assets), Amount	$ 1,454,168	$ 1,200,885
Tier 1 Capital (to risk-weighted assets), Amount	1,361,832	1,147,306
Common Equity Tier 1 Capital (to risk-weighted assets), Amount	1,277,295	1,075,656
Leverage (to adjusted average assets), Amount	$ 1,361,832	$ 1,147,306
Total Risk-Based Capital Ratio (to risk-weighted assets), Ratio	0.1579	0.1821
Tier 1 Capital (to risk-weighted assets), Ratio	0.1479	0.1740
Common Equity Tier 1 Capital (to risk-weighted assets), Ratio	13.87%	16.31%
Leverage (to adjusted average assets), Ratio	0.1146	0.1168
Total Risk-Based Capital Ratio (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Amount	$ 736,709	$ 527,630
Tier 1 Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Amount	552,532	395,723
Common Equity Tier 1 Capital (to risk-weighted assets), Minimum for Capital, Adequacy Purpose, Amount	414,399	296,792
Leverage (to adjusted average assets), Minimum for Capital Adequacy Purpose, Amount	$ 475,134	$ 392,763
Total Risk-Based Capital Ratio (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Ratio	0.0800	0.0800
Tier 1 Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Ratio	0.0600	0.0600
Common Equity Tier 1 Capital (to risk-weighted assets), Minimum for Capital, Adequacy Purpose, Ratio	4.50%	4.50%
Leverage (to adjusted average assets), Minimum for Capital Adequacy Purpose, Ratio	0.0400	0.0400
Seacoast National Bank (A Wholly Owned Bank Subsidiary)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Risk-Based Capital Ratio (to risk-weighted assets), Amount	$ 1,330,836	$ 1,099,439
Tier 1 Capital (to risk-weighted assets), Amount	1,238,500	1,045,860
Common Equity Tier 1 Capital (to risk-weighted assets), Amount	1,238,496	1,045,856
Leverage (to adjusted average assets), Amount	$ 1,238,500	$ 1,045,860
Total Risk-Based Capital Ratio (to risk-weighted assets), Ratio	0.1447	0.1668
Tier 1 Capital (to risk-weighted assets), Ratio	0.1346	0.1586
Common Equity Tier 1 Capital (to risk-weighted assets), Ratio	13.46%	15.86%
Leverage (to adjusted average assets), Ratio	0.1044	0.1065
Total Risk-Based Capital Ratio (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Amount	$ 735,923	$ 527,055
Tier 1 Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Amount	551,942	395,291
Common Equity Tier 1 Capital (to risk-weighted assets), Minimum for Capital, Adequacy Purpose, Amount	413,957	296,468
Leverage (to adjusted average assets), Minimum for Capital Adequacy Purpose, Amount	$ 496,318	$ 392,638
Total Risk-Based Capital Ratio (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Ratio	0.0800	0.0800
Tier 1 Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Ratio	0.0600	0.0600
Common Equity Tier 1 Capital (to risk-weighted assets), Minimum for Capital, Adequacy Purpose, Ratio	4.50%	4.50%
Leverage (to adjusted average assets), Minimum for Capital Adequacy Purpose, Ratio	0.0400	0.0400
Total Risk-Based Capital Ratio (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 919,904	$ 658,819
Tier 1 Capital (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	735,923	527,055
Common Equity Tier 1 Capital (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	597,938	428,232
Leverage (to adjusted average assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 620,398	$ 490,798
Total Risk-Based Capital Ratio (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.1000	0.1000
Tier 1 Capital (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0800	0.0800
Common Equity Tier 1 Capital (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Leverage (to adjusted average assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0500	0.0500

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Details)	Dec. 31, 2022 votesPerShare shares
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer rate	2.50%
Number of votes per share | votesPerShare	1
Number of shares authorized for repurchase (in shares)	100,000,000
Stock Purchase Plan
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Reserved common shares for issuance (in shares)	800,000
Profit Sharing Plan
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Reserved common shares for issuance (in shares)	1,750,000

Seacoast Banking Corporation _3

Seacoast Banking Corporation of Florida (Parent Company Only) Financial Information - Summary of Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Other assets	$ 280,212	$ 201,857
Total Assets	12,145,762	9,681,433
Liabilities and Shareholders' Equity
Subordinated debt	84,533	71,646
Other liabilities	149,830	109,897
Shareholders' equity	1,607,775	1,310,736	$ 1,130,402	$ 985,639
Total Liabilities & Shareholders' Equity	12,145,762	9,681,433
Parent Company
Assets
Cash	58	57
Securities purchased under agreement to resell with subsidiary bank, maturing within 30 days	111,698	98,398
Investment in subsidiaries	1,578,786	1,286,478
Other assets	2,335	1,140
Total Assets	1,692,877	1,386,073
Liabilities and Shareholders' Equity
Subordinated debt	84,533	71,646
Other liabilities	673	3,795
Shareholders' equity	1,607,671	1,310,632
Total Liabilities & Shareholders' Equity	$ 1,692,877	$ 1,386,073

Seacoast Banking Corporation _4

Seacoast Banking Corporation of Florida (Parent Company Only) Financial Information - Summary of Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income
Total Interest Income	$ 380,494	$ 284,244	$ 287,035
Interest expense	14,332	8,219	24,292
Other expenses	23,690	16,341	15,835
Income tax benefit	31,629	34,335	22,818
Net Income	106,507	124,403	77,764
Parent Company
Income
Interest/other	897	167	270
Dividends from subsidiary Bank	48,424	47,684	20,230
Total Interest Income	49,321	47,851	20,500
Interest expense	3,090	1,683	2,236
Other expenses	1,023	765	838
Total expenses	4,113	2,448	3,074
Income before income taxes and equity in undistributed income of subsidiaries	45,208	45,403	17,426
Income tax benefit	(675)	(481)	(589)
Income before equity in undistributed income of subsidiaries	45,883	45,884	18,015
Equity in undistributed income of subsidiaries	60,624	78,519	59,749
Net Income	$ 106,507	$ 124,403	$ 77,764

Seacoast Banking Corporation _5

Seacoast Banking Corporation of Florida (Parent Company Only) Financial Information - Summary of Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Adjustments to reconcile net income to net cash provided by operating activities:
Net Income	$ 106,507	$ 124,403	$ 77,764
Net (increase) decrease in other assets	508	(42,437)	(35,555)
Net increase in other liabilities	22,042	28,883	18,776
Net Cash Provided by Operating Activities	195,859	154,572	60,652
Cash Flows From Investing Activities
Net Cash Used in Investing Activities	(364,875)	(412,511)	(342,502)
Cash Flows From Financing Activities
Dividends paid	(41,242)	(22,506)	0
Stock based employee benefit plans	3,408	5,022
Stock based employee benefit plans			(1,486)
Net Cash (Used in) Provided by Financing Activities	(366,773)	591,580	561,407
Net (decrease) increase in cash and cash equivalents	(535,789)	333,641	279,557
Cash and Cash Equivalents at Beginning of Year	737,729	404,088	124,531
Cash and Cash Equivalents at End of Year	201,940	737,729	404,088
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	13,743	9,977	23,548
Parent Company
Adjustments to reconcile net income to net cash provided by operating activities:
Net Income	106,507	124,403	77,764
Equity in undistributed income of subsidiaries	(60,624)	(78,519)	(59,749)
Net (increase) decrease in other assets	(13,823)	(489)	1,772
Net increase in other liabilities	499	400	256
Net Cash Provided by Operating Activities	32,559	45,795	20,043
Cash Flows From Investing Activities
Net cash from bank acquisitions	17,610	0	(1,462)
Net advances with subsidiary	(13,300)	(28,324)	(17,095)
Net Cash Used in Investing Activities	4,310	(28,324)	(18,557)
Cash Flows From Financing Activities
Dividends paid	(41,242)	(22,506)	0
Stock based employee benefit plans	4,374
Stock based employee benefit plans		5,022	(1,486)
Net Cash (Used in) Provided by Financing Activities	(36,868)	(17,484)	(1,486)
Net (decrease) increase in cash and cash equivalents	1	(13)	0
Cash and Cash Equivalents at Beginning of Year	57	70	70
Cash and Cash Equivalents at End of Year	58	57	70
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	$ 2,890	$ 1,441	$ 1,992

Contingent Liabilities and Co_3

Contingent Liabilities and Commitments with Off-Balance Sheet Risk - Summary of Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Other Commitments [Line Items]
Commitments to extend credit	$ 2,814,924	$ 1,980,338
Unfunded limited partner equity commitment	26,761	36,393
Secured
Other Commitments [Line Items]
Collateral held	29,900
Secured
Other Commitments [Line Items]
Standby letters of credit and financial guarantees written	19,744	12,091
Unsecured
Other Commitments [Line Items]
Standby letters of credit and financial guarantees written	$ 3,191	$ 1,189

Fair Value - Fair Value Measure

Fair Value - Fair Value Measurements for Items Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financial Assets
Available-for-sale debt securities	$ 1,871,742	$ 1,644,319
Loans held for sale	3,151	31,791
Other real estate owned	2,301	13,618
Fair Value, Measurements, Recurring
Financial Assets
Available-for-sale debt securities	1,871,742	1,644,319
Derivative financial instruments	23,142	8,312
Loans held for sale	3,151	31,791
Equity securities	8,220	9,316
Financial Liabilities
Derivative financial instruments	23,142	8,022
Fair Value, Measurements, Recurring | Level 1
Financial Assets
Available-for-sale debt securities	186	197
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	8,220	9,316
Financial Liabilities
Derivative financial instruments	0	0
Fair Value, Measurements, Recurring | Level 2
Financial Assets
Available-for-sale debt securities	1,871,556	1,644,122
Derivative financial instruments	23,142	8,312
Loans held for sale	3,151	31,791
Equity securities	0	0
Financial Liabilities
Derivative financial instruments	23,142	8,022
Fair Value, Measurements, Recurring | 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	8,513	8,443
Other real estate owned	2,301	13,618
Fair Value, Measurements, Nonrecurring | Level 1
Financial Assets
Loans	0	0
Other real estate owned	0	0
Fair Value, Measurements, Nonrecurring | Level 2
Financial Assets
Loans	1,183	1,558
Other real estate owned	2,301	0
Fair Value, Measurements, Nonrecurring | Level 3
Financial Assets
Loans	7,330	6,885
Other real estate owned	$ 0	$ 13,618

Fair Value - Fair Value of Cont

Fair Value - Fair Value of Contractual Balance and Gains or Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Aggregate fair value	$ 3,151	$ 31,791
Contractual balance	3,071	30,963
Excess	$ 80	$ 828

Fair Value - Additional Informa

Fair Value - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Average capitalization rate	6.70%
Specific reserve	$ 113,895	$ 83,315	$ 92,733	$ 35,154
Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	10,200	13,100
Specific reserve	$ 2,900	$ 4,700

Fair Value - Summary of Carryin

Fair Value - Summary of Carrying Value and Fair Value of Company's Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financial Assets
Held-to-maturity debt securities	$ 747,408	$ 638,640
Time deposits with other banks	3,236	0
Loans, net	8,030,829	5,841,714
Level 1
Financial Assets
Held-to-maturity debt securities		0
Time deposits with other banks	0
Loans, net		0
Financial Liabilities
Deposits		0
Federal Home Loan Bank (FHLB) borrowings	0
Subordinated debt		0
Level 1 | Fair Value, Measurements, Recurring
Financial Assets
Held-to-maturity debt securities	0
Loans, net	0
Financial Liabilities
Deposits	0
Subordinated debt	0
Level 2
Financial Assets
Held-to-maturity debt securities		627,398
Time deposits with other banks	2,989
Loans, net		0
Financial Liabilities
Deposits		0
Federal Home Loan Bank (FHLB) borrowings	0
Subordinated debt		69,348
Level 2 | Fair Value, Measurements, Recurring
Financial Assets
Held-to-maturity debt securities	617,741
Loans, net	0
Financial Liabilities
Deposits	0
Subordinated debt	82,226
Level 3
Financial Assets
Held-to-maturity debt securities		0
Time deposits with other banks	0
Loans, net		5,907,447
Financial Liabilities
Deposits		8,067,995
Federal Home Loan Bank (FHLB) borrowings	149,450
Subordinated debt		0
Level 3 | Fair Value, Measurements, Recurring
Financial Assets
Held-to-maturity debt securities	0
Loans, net	7,845,375
Financial Liabilities
Deposits	9,976,125
Subordinated debt	0
Carrying Amount
Financial Assets
Held-to-maturity debt securities		638,640
Time deposits with other banks	3,236
Loans, net		5,833,271
Financial Liabilities
Deposits		8,067,589
Federal Home Loan Bank (FHLB) borrowings	150,000
Subordinated debt		$ 71,646
Carrying Amount | Fair Value, Measurements, Recurring
Financial Assets
Held-to-maturity debt securities	747,408
Loans, net	8,022,316
Financial Liabilities
Deposits	9,981,595
Subordinated debt	$ 84,533

Business Combinations - Additio

Business Combinations - Additional Information (Details)					12 Months Ended
	Jan. 31, 2023 branch	Oct. 07, 2022 USD ($) branch	Jan. 03, 2022 USD ($) branch	Aug. 06, 2021 USD ($) branch	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business Acquisition [Line Items]
Specific reserve					$ 113,895,000	$ 83,315,000	$ 92,733,000	$ 35,154,000
Goodwill					480,319,000	252,154,000	221,176,000	$ 205,286,000
Share-based compensation expense					11,155,000	8,685,000	7,304,000
Acquisition costs					27,900,000	7,900,000	$ 9,100,000
Stock options
Business Acquisition [Line Items]
Fair value of options and warrants converted					10,400,000	4,700,000
Apollo Bancshares, Inc.
Business Acquisition [Line Items]
Number of branches acquired | branch		5
Exchange ratio (in shares)		1.006529
Minority interest portion, number of Seacoast stock for each share of stock converted (in shares)		1.195651
Goodwill, nondeductible for tax purposes		$ 90,200,000
Fair value of options and warrants converted		6,530,000
Specific reserve		7,800,000
Goodwill		90,237,000
Deposits		854,774,000
Apollo Bancshares, Inc. | PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses at acquisition		(2,658,000)
Total purchased credit-impaired loan acquired		90,895,000
Apollo Bancshares, Inc. | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Specific reserve		$ 5,100,000
Drummond Banking Company
Business Acquisition [Line Items]
Number of branches acquired | branch		18
Exchange ratio (in shares)		51.9561
Specific reserve		$ 12,500,000
Percentage of common stock acquired		100%
Goodwill		$ 103,476,000
Deposits		881,281,000
Drummond Banking Company | PCD Loans
Business Acquisition [Line Items]
Allowance for credit losses at acquisition		(2,566,000)
Total purchased credit-impaired loan acquired		51,705,000
Drummond Banking Company | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Specific reserve		$ 9,900,000
Business Bank of Florida
Business Acquisition [Line Items]
Number of branches acquired | branch			1
Exchange ratio (in shares)			0.7997
Goodwill, nondeductible for tax purposes			$ 8,000,000
Fair value of options and warrants converted			497,000
Specific reserve			$ 1,800,000
Percentage of common stock acquired			100%
Goodwill			$ 7,962,000
Deposits			166,326,000
Business Bank of Florida | Stock options | 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]
Specific reserve			15,000
Allowance for credit losses at acquisition			(15,000)
Total purchased credit-impaired loan acquired			651,000
Business Bank of Florida | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Specific reserve			$ 1,800,000
Sabal Palm Bancorp, Inc.
Business Acquisition [Line Items]
Number of branches acquired | branch			3
Exchange ratio (in shares)			0.2203
Goodwill, nondeductible for tax purposes			$ 26,500,000
Fair value of options and warrants converted			3,336,000
Specific reserve			$ 3,400,000
Percentage of common stock acquired			100%
Goodwill			$ 26,489,000
Deposits			395,952,000
Sabal Palm Bancorp, Inc. | Stock options | 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]
Specific reserve			37,000
Allowance for credit losses at acquisition			(37,000)
Total purchased credit-impaired loan acquired			3,003,000
Sabal Palm Bancorp, Inc. | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Specific reserve			$ 3,400,000
Legacy Bank of Florida
Business Acquisition [Line Items]
Number of branches acquired | branch				5
Exchange ratio (in shares)				0.1703
Goodwill, nondeductible for tax purposes				$ 31,000,000
Fair value of options and warrants converted				4,736,000
Specific reserve				$ 11,200,000
Percentage of common stock acquired				100%
Goodwill				$ 30,978,000
Deposits				494,921,000
Legacy Bank of Florida | Stock options | Seacoast 2021 Incentive Plan
Business Acquisition [Line Items]
Fair value of options and warrants converted						4,700,000
Share-based compensation expense						$ 900,000
Legacy Bank of Florida | PCD Loans
Business Acquisition [Line Items]
Specific reserve				3,000,000
Allowance for credit losses at acquisition				(3,046,000)
Total purchased credit-impaired loan acquired				62,589,000
Legacy Bank of Florida | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Specific reserve				$ 8,200,000
Professional Holding Corp.
Business Acquisition [Line Items]
Deposits					2,200,000,000
Total purchased credit-impaired loan acquired					$ 2,100,000,000
Professional Holding Corp. | Subsequent Event
Business Acquisition [Line Items]
Exchange ratio (in shares)	0.8909
Percentage of common stock acquired	100%
Number of branches operated | branch	9

Business Combinations - Purchas

Business Combinations - Purchase Price (Details) $ / shares in Units, $ in Thousands	Jan. 31, 2023	Oct. 07, 2022 USD ($) $ / shares shares	Jan. 03, 2022 USD ($) $ / shares shares	Aug. 06, 2021 USD ($) $ / shares shares
Apollo Bancshares, Inc.
Business Acquisition [Line Items]
Number of shares outstanding (in shares) | shares		3,766,000
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 shares outstanding (in shares) | shares		99,000
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 shares outstanding (in shares) | shares			1,112,000
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 shares outstanding (in shares) | shares			7,536,000
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
Legacy Bank of Florida
Business Acquisition [Line Items]
Number of shares outstanding (in shares) | shares				15,778,000
Exchange ratio (in shares)				0.1703
Number of shares of common stock issued (in shares) | shares				2,687,000
Multiplied by common stock price per share (in dollars per share) | $ / shares				$ 32.19
Value of common stock issued				$ 86,487
Cash paid for fractional shares				7
Fair value of options and warrants converted				4,736
Total purchase price				$ 91,230
Professional Holding Corp. | Subsequent Event
Business Acquisition [Line Items]
Exchange ratio (in shares)	0.8909

Business Combinations - Fair Va

Business Combinations - Fair Value of the Assets Purchased, Including Goodwill, and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Oct. 07, 2022	Jan. 03, 2022	Dec. 31, 2021	Aug. 06, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets:
Goodwill	$ 480,319			$ 252,154		$ 221,176	$ 205,286
Apollo Bancshares, Inc.
Assets:
Cash and cash equivalents		$ 41,001
Investment securities		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
Investment securities		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
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
Sabal Palm Bancorp, Inc.
Assets:
Cash and cash equivalents			170,609
Investment securities			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
Legacy Bank of Florida
Assets:
Cash and cash equivalents					$ 98,107
Investment securities					992
Loans					477,215
Bank premises and equipment					2,577
Core deposit intangibles					3,454
Goodwill					30,978
Other Assets					15,532
Total Assets					628,855
Liabilities:
Deposits					494,921
Other Liabilities					42,705
Total Liabilities					$ 537,626

Business Combinations - Fair _2

Business Combinations - Fair Value of Acquired Loans (Details) - USD ($) $ in Thousands	Oct. 07, 2022	Jan. 03, 2022	Aug. 06, 2021
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	49,756
Fair Value	46,326
Apollo Bancshares, Inc. | Consumer
Business Acquisition [Line Items]
Book Balance	11,307
Fair Value	11,055
Apollo Bancshares, Inc. | PPP loans
Business Acquisition [Line Items]
Book Balance	369
Fair Value	369
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		9,376
Fair Value		9,321
Business Bank of Florida | Consumer
Business Acquisition [Line Items]
Book Balance		59
Fair Value		61
Business Bank of Florida | PPP loans
Business Acquisition [Line Items]
Book Balance		1,959
Fair Value		1,959
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		17,797
Fair Value		17,501
Sabal Palm Bancorp, Inc. | Consumer
Business Acquisition [Line Items]
Book Balance		233
Fair Value		232
Sabal Palm Bancorp, Inc. | PPP loans
Business Acquisition [Line Items]
Book Balance		3,312
Fair Value		$ 3,312
Legacy Bank of Florida
Business Acquisition [Line Items]
Book Balance			$ 486,282
Fair Value			477,215
Legacy Bank of Florida | Construction and land development
Business Acquisition [Line Items]
Book Balance			37,558
Fair Value			36,651
Legacy Bank of Florida | Commercial real estate - owner occupied
Business Acquisition [Line Items]
Book Balance			35,765
Fair Value			35,363
Legacy Bank of Florida | Commercial real estate - non-owner occupied
Business Acquisition [Line Items]
Book Balance			241,322
Fair Value			237,091
Legacy Bank of Florida | Residential real estate
Business Acquisition [Line Items]
Book Balance			71,118
Fair Value			70,541
Legacy Bank of Florida | Commercial and financial
Business Acquisition [Line Items]
Book Balance			61,274
Fair Value			58,324
Legacy Bank of Florida | Consumer
Business Acquisition [Line Items]
Book Balance			647
Fair Value			647
Legacy Bank of Florida | PPP loans
Business Acquisition [Line Items]
Book Balance			38,598
Fair Value			$ 38,598

Business Combinations - Carryin

Business Combinations - Carrying Amounts of Loans (Details) - PCD Loans - USD ($) $ in Thousands	Oct. 07, 2022	Jan. 03, 2022	Aug. 06, 2021
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 purchased credit-impaired loan 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 purchased credit-impaired loan 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 purchased credit-impaired loan 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 purchased credit-impaired loan acquired		$ 3,003
Legacy Bank of Florida
Business Acquisition [Line Items]
Book balance of loans at acquisition			$ 66,371
Allowance for credit losses at acquisition			(3,046)
Non-credit related discount			(736)
Total purchased credit-impaired loan acquired			$ 62,589

Business Combinations - Pro-For

Business Combinations - Pro-Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Business Combinations [Abstract]
Net interest income	$ 448,139	$ 406,482
Net income available to common shareholders	$ 161,274	$ 191,862
EPS - basic (in dollars per share)	$ 2,530	$ 2,680
EPS - diluted (in dollars per share)	$ 2,510	$ 2,670