Seacoast Banking Corporation of Florida (SBCF) 10-Q 3 Nov 21 2021 Q3 Quarterly report Financial data

Cover Page

Cover Page	9 Months Ended
	Sep. 30, 2021shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	0-13660
Entity Registrant Name	Seacoast Banking Corporation of Florida
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	59-2260678
Entity Address, Address Line One	815 COLORADO AVENUE,
Entity Address, City or Town	STUART
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	34994
City Area Code	(772)
Local Phone Number	287-4000
Title of 12(b) Security	Common Stock
Trading Symbol	SBCF
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	58,349,137
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000730708
Current Fiscal Year End Date	--12-31

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Interest and fees on loans	$ 64,424	$ 60,487	$ 187,070	$ 188,771
Interest and dividends on securities	7,918	7,097	21,070	23,609
Interest on interest bearing deposits and other investments	867	556	2,162	1,974
Total Interest Income	73,209	68,140	210,302	214,354
Interest on deposits	849	1,299	2,894	5,692
Interest on time certificates	583	2,673	2,294	11,261
Interest on borrowed money	453	665	1,378	3,449
Total Interest Expense	1,885	4,637	6,566	20,402
Net Interest Income	71,324	63,503	203,736	193,952
Provision for credit losses	5,091	(845)	(5,479)	36,279
Net Interest Income after Provision for Credit Losses	66,233	64,348	209,215	157,673
Noninterest income
Other income	19,058	16,942	52,220	45,387
Securities (losses) gains, net	(30)	4	(199)	1,253
Total Noninterest Income (Note I – Noninterest Income and Expense)	19,028	16,946	52,021	46,640
Total Noninterest Expenses (Note I – Noninterest Income and Expense)	55,268	51,674	147,172	141,871
Income Before Income Taxes	29,993	29,620	114,064	62,442
Provision for income taxes	7,049	6,992	25,991	14,025
Net Income	$ 22,944	$ 22,628	$ 88,073	$ 48,417
Net income per share of common stock
Diluted (in dollars per share)	$ 0.40	$ 0.42	$ 1.56	$ 0.91
Basic (in dollars per share)	$ 0.40	$ 0.42	$ 1.57	$ 0.91
Average common shares outstanding
Diluted (in shares)	57,645	54,301	56,441	53,325
Basic (in shares)	57,148	53,978	55,954	52,926

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 22,944	$ 22,628	$ 88,073	$ 48,417
Available-for-sale securities:
Unrealized gains (losses) on available-for-sale securities, net of tax benefit of $1.3 million and tax benefit of $4.3 million for the three and nine months ended September 30, 2021, respectively, and tax expense of $0.4 million and tax expense of $4.0 million for the three and nine months ended September 30, 2020, respectively	(4,459)	1,890	(15,014)	16,024
Amortization of unrealized gains and losses on securities transferred to held-to-maturity, net of tax expense of $5 thousand and $16 thousand for the three and nine months ended September 30, 2021, respectively, and tax expense of $12 thousand and $36 thousand for the three and nine months ended September 30, 2020, respectively	21	43	65	137
Reclassification adjustment for losses (gains) included in net income, net of tax benefit of $0 and $19 thousand for the three and nine months ended September 30, 2021, respectively, and tax expense of $0 and $0.3 million for the three and nine months ended September 30, 2020, respectively	0	(4)	91	(1,403)
Available-for-sale securities, net of tax	(4,438)	1,929	(14,858)	14,758
Unrealized losses on derivatives designated as cash flow hedges, net of reclassifications to income, net of tax benefit of $32 thousand and $83 thousand for the three and nine months ended September 30, 2021, respectively	(94)	0	(243)	0
Total other comprehensive income (loss)	(4,532)	1,929	(15,101)	14,758
Comprehensive Income	$ 18,412	$ 24,557	$ 72,972	$ 63,175

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities, tax (benefit) expense	$ (1,300)	$ 400	$ (4,300)	$ 4,000
Amortization of unrealized gains and losses on securities transferred to held-to-maturity, tax expense	5	12	16	36
Reclassification adjustment for losses included in net income, tax expense (benefit)	0	$ 0	(19)	$ 300
Unrealized losses on cash flow hedging derivatives, net of reclassifications, tax benefit	$ 32		$ 83

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 199,460	$ 86,630
Interest bearing deposits with other banks	1,028,235	317,458
Total cash and cash equivalents	1,227,695	404,088
Time deposits with other banks	750	750
Debt securities:
Securities available-for-sale (at fair value)	1,546,155	1,398,157
Securities held-to-maturity (fair value $518.5 million at September 30, 2021 and $192.2 million at December 31, 2020)	526,502	184,484
Total debt securities	2,072,657	1,582,641
Loans held for sale (at fair value)	49,597	68,890
Loans	5,905,884	5,735,349
Less: Allowance for credit losses	(87,823)	(92,733)
Loans, net of allowance for credit losses	5,818,061	5,642,616
Bank premises and equipment, net	71,250	75,117
Other real estate owned	13,628	12,750
Goodwill	252,154	221,176
Other intangible assets, net	16,153	16,745
Bank owned life insurance	193,747	131,776
Net deferred tax assets	24,187	23,629
Other assets	153,619	162,214
Total Assets	9,893,498	8,342,392
Liabilities
Deposits	8,334,172	6,932,561
Securities sold under agreements to repurchase, maturing within 30 days	105,548	119,609
Subordinated debt	71,576	71,365
Other liabilities	91,682	88,455
Total Liabilities	8,602,978	7,211,990
Shareholders' Equity
Common stock, par value $0.10 per share, authorized 120,000,000 shares, issued 58,742,223 and outstanding 58,349,137 at September 30, 2021, and authorized 120,000,000, issued 55,584,979 and outstanding 55,243,226 shares at December 31, 2020	5,835	5,524
Other shareholders' equity	1,284,685	1,124,878
Total Shareholders' Equity	1,290,520	1,130,402
Total Liabilities and Shareholders' Equity	$ 9,893,498	$ 8,342,392

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Held to maturity, fair value	$ 518,464	$ 192,179
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)	58,742,223	55,584,979
Common stock, shares outstanding (in shares)	58,349,137	55,243,226

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities
Net income	$ 88,073	$ 48,417
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	4,139	4,531
Amortization of premiums and discounts on securities, net	5,353	2,890
Amortization of operating lease right-of-use assets	3,263	3,274
Other amortization and accretion, net	(11,715)	(4,402)
Stock based compensation	7,492	5,471
Origination of loans designated for sale	(406,392)	(378,069)
Sale of loans designated for sale	438,422	335,882
Provision for credit losses	(5,479)	36,279
Deferred income taxes	3,325	(6,257)
Losses (gains) on sale of securities	73	(1,102)
Gains on sale of loans	(12,450)	(10,585)
Gains on sale and write-downs of other real estate owned	(380)	(278)
Losses on disposition of fixed assets and write-downs upon transfer of bank premises to other real estate owned	684	790
Changes in operating assets and liabilities, net of effects from acquired companies:
Net decrease (increase) in other assets	4,899	(27,735)
Net (decrease) increase in other liabilities	(14,543)	9,174
Net cash provided by operating activities	104,764	18,280
Cash Flows from Investing Activities
Maturities and repayments of debt securities available-for-sale	417,189	211,798
Maturities and repayments of debt securities held-to-maturity	103,254	53,409
Proceeds from sale of debt securities available-for-sale	57,209	96,733
Purchases of debt securities available-for-sale	(848,122)	(626,731)
Purchases of debt securities held-to-maturity	(235,077)	0
Maturities of time deposits with other banks	0	1,495
Net new loans and principal repayments	559,920	(204,282)
Purchases of loans held for investment	(236,699)	0
Proceeds from sale of other real estate owned	4,954	6,174
Additions to other real estate owned	(2,134)	(2,004)
Proceeds from sale of FHLB and Federal Reserve Bank Stock	3,945	37,697
Purchase of FHLB and Federal Reserve Bank Stock	(59)	(26,976)
Net cash from bank acquisition	98,100	71,965
Purchase of bank owned life insurance	(50,000)	0
Additions to bank premises and equipment	(1,697)	(1,373)
Net cash used in investing activities	(129,217)	(382,095)
Cash Flows from Financing Activities
Net increase in deposits	906,690	826,686
Net (decrease) increase in repurchase agreements	(14,061)	3,387
Net decrease in FHLB borrowings with original maturities of three months or less	0	(235,000)
Repayments of FHLB borrowings with original maturities of more than three months	(33,000)	(80,000)
Proceeds from FHLB borrowings with original maturities of more than three months	0	35,000
Stock based employee benefit plans	3,287	(1,221)
Dividends paid	(14,856)	0
Net cash provided by financing activities	848,060	548,852
Net increase in cash and cash equivalents	823,607	185,037
Cash and cash equivalents at beginning of period	404,088	124,531
Cash and cash equivalents at end of period	1,227,695	309,568
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	8,334	19,834
Cash paid during the period for taxes	28,200	21,712
Recognition of operating lease right-of-use assets, other than through bank acquisition	35	1,887
Recognition of operating lease liabilities, other than through bank acquisition	35	1,887
Supplemental disclosure of non-cash investing activities:
Transfer of debt securities from available-for-sale to held-to-maturity	210,805	0
Unsettled purchases of debt securities available-for-sale	8,064	0
Transfers from loans to other real estate owned	0	5,552
Transfers from bank premises to other real estate owned	$ 3,318	$ 1,289

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Cumulative change in accounting principle upon adoption of new accounting pronouncement	Cumulative change in accounting principle upon adoption of new accounting pronouncementRetained Earnings
Beginning balance (in shares) at Dec. 31, 2019		51,514
Beginning balance at Dec. 31, 2019	$ 985,639	$ 5,151	$ 786,242	$ 195,813	$ (6,032)	$ 4,465	$ (16,876)	$ (16,876)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	63,175			48,417		14,758
Stock based compensation (in shares)		39
Stock based compensation expense	5,471		5,471
Common stock transactions related to stock based employee benefit plans (in shares)		395
Common stock transactions related to stock based employee benefit plans	(1,918)	$ 44	(53)		(1,909)
Common stock issued for stock options (in shares)		58
Common stock issued for stock options	698	$ 6	692
Issuance of common stock, pursuant to acquisition (in shares)		3,163
Issuance of common stock, pursuant to acquisition	62,152	$ 316	61,836
Increase (decrease) in shares during period (in shares)		3,655
Increase (decrease) in stockholders' equity during period	112,702	$ 366	67,946	31,541	(1,909)	14,758
Ending balance (in shares) at Sep. 30, 2020		55,169
Ending balance at Sep. 30, 2020	1,098,341	$ 5,517	854,188	227,354	(7,941)	19,223
Beginning balance (in shares) at Jun. 30, 2020		52,991
Beginning balance at Jun. 30, 2020	1,030,603	$ 5,299	811,321	204,726	(8,037)	17,294
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	24,557			22,628		1,929
Stock based compensation (in shares)		39
Stock based compensation expense	1,948		1,948
Common stock transactions related to stock based employee benefit plans (in shares)		18
Common stock transactions related to stock based employee benefit plans	96	$ 6	(6)		96
Common stock issued for stock options (in shares)		1
Common stock issued for stock options	16		16
Issuance of common stock, pursuant to acquisition (in shares)		2,120
Issuance of common stock, pursuant to acquisition	41,121	$ 212	40,909
Increase (decrease) in shares during period (in shares)		2,178
Increase (decrease) in stockholders' equity during period	67,738	$ 218	42,867	22,628	96	1,929
Ending balance (in shares) at Sep. 30, 2020		55,169
Ending balance at Sep. 30, 2020	1,098,341	$ 5,517	854,188	227,354	(7,941)	19,223
Beginning balance (in shares) at Dec. 31, 2020		55,243
Beginning 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	72,972			88,073		(15,101)
Stock based compensation (in shares)		23
Stock based compensation expense	6,620		6,620
Common stock transactions related to stock based employee benefit plans (in shares)		139
Common stock transactions related to stock based employee benefit plans	(1,884)	$ 17	(40)		(1,861)
Common stock issued for stock options (in shares)		257
Common stock issued for stock options	5,172	$ 25	5,147
Issuance of common stock, pursuant to acquisition (in shares)		2,687
Issuance of common stock, pursuant to acquisition	86,487	$ 269	86,218
Conversion of options, pursuant to acquisition	5,607		5,607
Dividends on common stock	(14,856)			(14,856)
Increase (decrease) in shares during period (in shares)		3,106
Increase (decrease) in stockholders' equity during period	160,118	$ 311	103,552	73,217	(1,861)	(15,101)
Ending balance (in shares) at Sep. 30, 2021		58,349
Ending balance at Sep. 30, 2021	1,290,520	$ 5,835	959,644	329,918	(10,146)	5,269
Beginning balance (in shares) at Jun. 30, 2021		55,436
Beginning balance at Jun. 30, 2021	1,182,347	$ 5,544	862,598	314,584	(10,180)	9,801
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	18,412			22,944		(4,532)
Stock based compensation (in shares)		23
Stock based compensation expense	2,358		2,358
Common stock transactions related to stock based employee benefit plans (in shares)		25
Common stock transactions related to stock based employee benefit plans	17	$ 5	(22)		34
Common stock issued for stock options (in shares)		178
Common stock issued for stock options	2,902	$ 17	2,885
Issuance of common stock, pursuant to acquisition (in shares)		2,687
Issuance of common stock, pursuant to acquisition	86,487	$ 269	86,218
Conversion of options, pursuant to acquisition	5,607		5,607
Dividends on common stock	(7,610)			(7,610)
Increase (decrease) in shares during period (in shares)		2,913
Increase (decrease) in stockholders' equity during period	108,173	$ 291	97,046	15,334	34	(4,532)
Ending balance (in shares) at Sep. 30, 2021		58,349
Ending balance at Sep. 30, 2021	$ 1,290,520	$ 5,835	$ 959,644	$ 329,918	$ (10,146)	$ 5,269

CONSOLIDATED STATEMENTS OF SH_2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Statement of Stockholders' Equity [Abstract]
Dividends on common stock (in dollars per share)	$ 0.13	$ 0.13

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Basis of Presentation: The accompanying unaudited condensed consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the "Company") have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation. Operating results for the three and nine months ended September 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021 or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. Use of Estimates: The preparation of these condensed 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.

Recently Issued Accounting Stan

Recently Issued Accounting Standards, Not Yet Adopted	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Recently Issued Accounting Standards, Not Yet Adopted	Recently Issued Accounting Standards, Not Yet AdoptedNone applicable this period.

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share Basic earnings per common share is computed by dividing net income available to common shareholders by the weighted average number of shares of common stock outstanding during the period. For the three and nine months ended September 30, 2021, no options to purchase shares of the Company's common stock were anti-dilutive, compared to 508,000 shares that were excluded in the computation of diluted earnings per share for both the three and nine months ended September 30, 2020. Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands, except per share data) 2021 2020 2021 2020 Basic earnings per share Net income $ 22,944 $ 22,628 $ 88,073 $ 48,417 Average common shares outstanding 57,148 53,978 55,954 52,926 Net income per share $ 0.40 $ 0.42 $ 1.57 $ 0.91 Diluted earnings per share Net income $ 22,944 $ 22,628 $ 88,073 $ 48,417 Average common shares outstanding 57,148 53,978 55,954 52,926 Add: Dilutive effect of employee restricted stock and stock options 497 323 487 399 Average diluted shares outstanding 57,645 54,301 56,441 53,325 Net income per share $ 0.40 $ 0.42 $ 1.56 $ 0.91 Net income has not been allocated to unvested restricted stock awards that are participating securities because the amounts that would be allocated are not material to net income per share of common stock. Unvested restricted stock awards that are participating securities represent less than one percent of all of the outstanding shares of common stock for each of the periods presented.

Securities

Securities	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale and held-to-maturity at September 30, 2021 and December 31, 2020 are summarized as follows: September 30, 2021 (In thousands) Amortized Gross Gross Unrealized Fair Debt securities available-for-sale U.S. Treasury securities and obligations of U.S. government agencies $ 6,785 $ 371 $ (2) $ 7,154 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,147,743 12,378 (9,450) 1,150,671 Private mortgage-backed securities and collateralized mortgage obligations 75,754 1,710 (236) 77,228 Collateralized loan obligations 277,262 149 (105) 277,306 Obligations of state and political subdivisions 32,016 1,837 (57) 33,796 Totals $ 1,539,560 $ 16,445 $ (9,850) $ 1,546,155 Debt securities held-to-maturity Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 526,502 $ 4,702 $ (12,740) $ 518,464 Totals $ 526,502 $ 4,702 $ (12,740) $ 518,464 December 31, 2020 (In thousands) Amortized Gross Unrealized Gross Unrealized Fair Debt securities available-for-sale U.S. Treasury securities and obligations of U.S. government agencies $ 8,250 $ 528 $ (1) $ 8,777 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,038,437 23,457 (1,240) 1,060,654 Private mortgage-backed securities and collateralized mortgage obligations 89,284 2,131 (210) 91,205 Collateralized loan obligations 202,563 279 (647) 202,195 Obligations of state and political subdivisions 33,005 2,321 — 35,326 Totals $ 1,371,539 $ 28,716 $ (2,098) $ 1,398,157 Debt securities held-to-maturity Mortgage-backed securities of U.S. government-sponsored entities $ 184,484 $ 7,818 $ (123) $ 192,179 Totals $ 184,484 $ 7,818 $ (123) $ 192,179 Proceeds from sales of securities were $1.0 million for the three months ended September 30, 2021, with no gain or loss recognized. For the nine months ended September 30, 2021, proceeds from sales of securities were $57.2 million, resulting in gross gains of $0.2 million and gross losses of $0.3 million. For the three months ended September 30, 2020, proceeds from sales of securities were $4.4 million, which resulted in gross gains of $4 thousand and no gross losses. For the nine months ended September 30, 2020, proceeds from sales of securities were $96.7 million, which resulted in gross gains of $2.4 million and gross losses of $1.3 million. Also included in “Securities gains (losses), net” is a decrease of $30 thousand and a decrease of $0.1 million for the three and nine months ended September 30, 2021, respectively, and increases of $0.1 million and $0.2 million for the three and nine months ended September 30, 2020, respectively, in the value of a CRA-qualified mutual fund. 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 September 30, 2021, debt securities with a fair value of $385.5 million were pledged primarily as collateral for public deposits and secured borrowings. The amortized cost and fair value of debt securities held-to-maturity and available-for-sale at September 30, 2021, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. September 30, 2021 Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair Due in less than one year $ — $ — $ 1,418 $ 1,442 Due after one year through five years — — 13,892 14,828 Due after five years through ten years — — 8,376 8,764 Due after ten years — — 15,115 15,916 — — 38,801 40,950 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 526,502 518,464 1,147,743 1,150,671 Private mortgage-backed securities and collateralized mortgage obligations — — 75,754 77,228 Collateralized loan obligations — — 277,262 277,306 Totals $ 526,502 $ 518,464 $ 1,539,560 $ 1,546,155 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, or using observable market data. The tables below indicate the fair value of available-for-sale debt securities with unrealized losses for which no allowance for credit losses has been recorded. September 30, 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 $ — $ — $ 248 $ (2) $ 248 $ (2) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 660,028 (8,696) 15,350 (754) 675,378 (9,450) Private mortgage-backed securities and collateralized mortgage obligations 13,018 (206) 2,710 (30) 15,728 (236) Collateralized loan obligations 64,232 (58) 9,459 (47) 73,691 (105) Obligations of state and political subdivisions 5,443 (57) — — 5,443 (57) Totals $ 742,721 $ (9,017) $ 27,767 $ (833) $ 770,488 $ (9,850) December 31, 2020 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 $ — $ — $ 256 $ (1) $ 256 $ (1) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 203,405 (1,218) 569 (22) 203,974 (1,240) Private mortgage-backed securities and collateralized mortgage obligations 23,997 (210) — — 23,997 (210) Collateralized loan obligations 104,697 (102) 72,513 (545) 177,210 (647) Totals $ 332,099 $ (1,530) $ 73,338 $ (568) $ 405,437 $ (2,098) At September 30, 2021, the Company had $9.4 million of unrealized losses on mortgage-backed securities and collateralized mortgage obligations issued by government-sponsored entities having a fair value of $675.4 million. 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 September 30, 2021, no allowance for credit losses has been recorded. At September 30, 2021, the Company had $0.2 million of unrealized losses on private label residential and commercial mortgage-backed securities and collateralized mortgage obligations having a fair value of $15.7 million. The collateral underlying these mortgage investments is primarily residential real estate. The securities have average credit support of 35%. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2021, no allowance for credit losses has been recorded. At September 30, 2021, the Company had $0.1 million in unrealized losses in uncapped 3-month LIBOR floating rate collateralized loan obligations ("CLOs") having a fair value of $73.7 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 September 30, 2021, these positions are in AAA and AA tranches, with average credit support of 37% and 24%, respectively. The Company evaluates the securities for potential credit losses by modeling expected loan-level defaults, recoveries, and prepayments for each CLO security. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2021, 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 September 30, 2021, no allowance for credit losses has been recorded. Included in other assets at September 30, 2021 is $31.5 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 that may have a significant adverse effect on the fair value of these cost method investment securities. Also included in other assets is a $9.4 million investment in a CRA-qualified mutual fund carried at fair value. Accrued interest receivable on AFS and HTM debt securities of $3.7 million and $0.8 million at September 30, 2021, respectively, and $3.2 million and $0.4 million at December 31, 2020, respectively, is also included in other assets.

Loans

Loans	9 Months Ended
	Sep. 30, 2021
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 may be from the occupant of the residential property or from cash flows on rental income from the successful operation of the 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. The following tables present net loan balances by segment as of: September 30, 2021 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 190,344 $ 37,067 $ 48 $ 227,459 Commercial real estate - owner-occupied 951,119 218,128 32,089 1,201,336 Commercial real estate - non owner-occupied 1,166,220 428,095 79,272 1,673,587 Residential real estate 1,278,138 181,344 7,847 1,467,329 Commercial and financial 865,064 97,642 19,846 982,552 Consumer 157,916 5,092 11 163,019 Paycheck Protection Program 153,842 36,760 — 190,602 Totals $ 4,762,643 $ 1,004,128 $ 139,113 $ 5,905,884 December 31, 2020 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 216,420 $ 26,250 $ 2,438 $ 245,108 Commercial real estate - owner occupied 854,769 247,090 39,451 1,141,310 Commercial real estate - non-owner occupied 1,043,459 323,273 29,122 1,395,854 Residential real estate 1,155,914 176,105 10,609 1,342,628 Commercial and financial 743,846 94,627 16,280 854,753 Consumer 181,797 6,660 278 188,735 Paycheck Protection Program 515,532 51,429 — 566,961 Totals $ 4,711,737 $ 925,434 $ 98,178 $ 5,735,349 The amortized cost basis of loans at September 30, 2021 included net deferred costs of $32.1 million on non-PPP portfolio loans and net deferred fees of $5.4 million on PPP loans. At December 31, 2020, the amortized cost basis included net deferred costs of $22.6 million on non-PPP portfolio loans and net deferred fees of $9.5 million on PPP loans. At September 30, 2021, the remaining fair value adjustments on acquired loans were $26.6 million, or 2.3%, of the outstanding acquired loan balances, compared to $30.2 million, or 2.9%, of the acquired loan balances at December 31, 2020. These amounts are 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 $15.2 million and $25.8 million at September 30, 2021 and December 31, 2020, respectively. The following tables present the status of net loan balances as of September 30, 2021 and December 31, 2020. Loans on short-term payment deferral at the reporting date are reported as current. September 30, 2021 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 190,310 $ — $ — $ — $ 34 $ 190,344 Commercial real estate - owner-occupied 949,282 671 — — 1,166 951,119 Commercial real estate - non owner-occupied 1,164,458 — — — 1,762 1,166,220 Residential real estate 1,267,081 340 35 — 10,682 1,278,138 Commercial and financial 856,579 1,179 99 1,814 5,393 865,064 Consumer 157,468 269 34 — 145 157,916 Paycheck Protection Program 1 153,484 358 — — — 153,842 Total Portfolio Loans $ 4,738,662 $ 2,817 $ 168 $ 1,814 $ 19,182 $ 4,762,643 Acquired Non-PCD Loans Construction and land development $ 37,067 $ — $ — $ — $ — $ 37,067 Commercial real estate - owner-occupied 217,436 — 692 — — 218,128 Commercial real estate - non owner-occupied 427,170 — — — 925 428,095 Residential real estate 178,504 300 — — 2,540 181,344 Commercial and financial 96,799 334 — — 509 97,642 Consumer 4,639 15 — — 438 5,092 Paycheck Protection Program 1 36,760 — — — — 36,760 Total Acquired Non-PCD Loans $ 998,375 $ 649 $ 692 $ — $ 4,412 $ 1,004,128 PCD Loans Construction and land development $ 42 $ — $ — $ — $ 6 $ 48 Commercial real estate - owner-occupied 28,739 — — — 3,350 32,089 Commercial real estate - non owner-occupied 76,768 — — — 2,504 79,272 Residential real estate 6,007 24 — — 1,816 7,847 Commercial and financial 17,678 743 83 — 1,342 19,846 Consumer 11 — — 11 Total PCD Loans $ 129,245 $ 767 $ 83 $ — $ 9,018 $ 139,113 Total Loans $ 5,866,282 $ 4,233 $ 943 $ 1,814 $ 32,612 $ 5,905,884 1 Paycheck Protection Program loans are not reflected as past due when forgiveness applications are being processed by the SBA. Repayment of principal and interest is fully guaranteed by the U.S. government. December 31, 2020 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 216,262 $ — $ — $ — $ 158 $ 216,420 Commercial real estate - owner occupied 851,222 1,076 — — 2,471 854,769 Commercial real estate - non-owner occupied 1,041,306 — — — 2,153 1,043,459 Residential real estate 1,142,893 3,002 1,427 61 8,531 1,155,914 Commercial and financial 737,362 135 1,967 — 4,382 743,846 Consumer 180,879 203 138 2 575 181,797 Paycheck Protection Program 515,532 — — — — 515,532 Total Portfolio Loans $ 4,685,456 $ 4,416 $ 3,532 $ 63 $ 18,270 $ 4,711,737 Acquired Non-PCD Loans Construction and land development $ 26,250 $ — $ — $ — $ — $ 26,250 Commercial real estate - owner occupied 244,486 — — — 2,604 247,090 Commercial real estate - non-owner occupied 322,264 — — — 1,009 323,273 Residential real estate 171,507 1,605 104 — 2,889 176,105 Commercial and financial 93,223 216 — — 1,188 94,627 Consumer 6,640 20 — — — 6,660 Paycheck Protection Program 51,429 — — — — 51,429 Total Acquired Non-PCD Loans $ 915,799 $ 1,841 $ 104 $ — $ 7,690 $ 925,434 PCD Loans Construction and land development $ 2,429 $ — $ — $ — $ 9 $ 2,438 Commercial real estate - owner occupied 36,345 — — — 3,106 39,451 Commercial real estate - non-owner occupied 24,200 — — — 4,922 29,122 Residential real estate 9,537 — — — 1,072 10,609 Commercial and financial 15,121 125 — — 1,034 16,280 Consumer 271 — — — 7 278 Total PCD Loans $ 87,903 $ 125 $ — $ — $ 10,150 $ 98,178 Total Loans $ 5,689,158 $ 6,382 $ 3,636 $ 63 $ 36,110 $ 5,735,349 All interest accrued but not received for loans placed on nonaccrual is reversed against interest income. Interest subsequently received on such loans is accounted for under the cost-recovery method, whereby interest income is not recognized until the loan balance is reduced to zero. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current, and future payments are reasonably assured. The Company recognized $0.3 million and $0.1 million in interest income on nonaccrual loans during the three months ended September 30, 2021 and 2020, respectively. The Company recognized $0.9 million and $0.5 million in interest income on nonaccrual loans during the nine months ended September 30, 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: September 30, 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 $ 40 $ — $ 40 $ — Commercial real estate - owner-occupied 3,490 1,026 4,516 417 Commercial real estate - non owner-occupied 3,739 1,452 5,191 95 Residential real estate 14,345 693 15,038 362 Commercial and financial 3,443 3,801 7,244 2,658 Consumer 33 550 583 550 Totals $ 25,090 $ 7,522 $ 32,612 $ 4,082 December 31, 2020 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ 148 $ 19 $ 167 $ 8 Commercial real estate - owner-occupied 7,893 288 8,181 287 Commercial real estate - non owner-occupied 5,666 2,418 8,084 1,640 Residential real estate 9,520 2,972 12,492 1,587 Commercial and financial 3,175 3,429 6,604 2,235 Consumer 222 360 582 75 Totals $ 26,624 $ 9,486 $ 36,110 $ 5,832 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) September 30, 2021 December 31, 2020 Construction and land development $ 31 $ 189 Commercial real estate - owner-occupied 5,152 11,992 Commercial real estate - non owner-occupied 5,190 7,285 Residential real estate 15,039 16,652 Commercial and financial 9,302 11,198 Consumer 583 586 Totals $ 35,297 $ 47,902 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. 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: September 30, 2021 (In thousands) 2021 2020 2019 2018 2017 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 62,879 $ 38,326 $ 38,517 $ 26,344 $ 4,771 $ 20,952 $ 35,590 $ 227,379 Special Mention — — — — — — — — Substandard — — — — — — — — Substandard Impaired — — — — — 80 — 80 Doubtful — — — — — — — — Total $ 62,879 $ 38,326 $ 38,517 $ 26,344 $ 4,771 $ 21,032 $ 35,590 $ 227,459 Commercial real estate - owner-occupied Risk Ratings: Pass $ 155,499 $ 159,752 $ 186,442 $ 142,027 $ 132,413 $ 385,244 $ 8,951 $ 1,170,328 Special Mention — 6,588 5,416 655 220 5,690 — 18,569 Substandard — — — 77 3,903 2,770 — 6,750 Substandard Impaired — — 2,811 256 1,104 1,518 — 5,689 Doubtful — — — — — — — — Total $ 155,499 $ 166,340 $ 194,669 $ 143,015 $ 137,640 $ 395,222 $ 8,951 $ 1,201,336 Commercial real estate - non owner-occupied Risk Ratings: Pass $ 248,842 $ 201,940 $ 303,903 $ 202,400 $ 123,851 $ 513,792 $ 7,203 $ 1,601,931 Special Mention — — 2,363 — 1,620 8,397 — 12,380 Substandard — 4,798 3,856 24,078 1,907 19,446 — 54,085 Substandard Impaired — — 1,052 — — 4,139 — 5,191 Doubtful — — — — — — — — Total $ 248,842 $ 206,738 $ 311,174 $ 226,478 $ 127,378 $ 545,774 $ 7,203 $ 1,673,587 Residential real estate Risk Ratings: Pass $ 364,563 $ 119,039 $ 110,560 $ 136,044 $ 132,151 $ 243,005 $ 342,581 $ 1,447,943 Special Mention — — — 47 — 205 285 537 Substandard — — — — — 160 35 195 Substandard Impaired — 488 728 40 5,358 9,335 2,705 18,654 Doubtful — — — — — — — — Total $ 364,563 $ 119,527 $ 111,288 $ 136,131 $ 137,509 $ 252,705 $ 345,606 $ 1,467,329 September 30, 2021 (In thousands) 2021 2020 2019 2018 2017 Prior Revolving Total Commercial and financial Risk Ratings: Pass $ 229,168 $ 187,063 $ 107,743 $ 83,267 $ 45,562 $ 60,048 $ 222,822 $ 935,673 Special Mention 563 16,137 219 247 275 149 406 17,996 Substandard — 388 4,502 3,666 1,491 3,333 25 13,405 Substandard Impaired — — 5,394 4,335 1,698 3,389 662 15,478 Doubtful — — — — — — — — Total $ 229,731 $ 203,588 $ 117,858 $ 91,515 $ 49,026 $ 66,919 $ 223,915 $ 982,552 Consumer Risk Ratings: Pass $ 32,239 $ 34,927 $ 30,164 $ 19,961 $ 12,050 $ 18,097 $ 12,838 $ 160,276 Special Mention — 38 90 57 42 50 1,477 1,754 Substandard — — — 11 35 — 198 244 Substandard Impaired — 15 59 25 79 129 438 745 Doubtful — — — — — — — — Total $ 32,239 $ 34,980 $ 30,313 $ 20,054 $ 12,206 $ 18,276 $ 14,951 $ 163,019 Paycheck Protection Program Risk Ratings: Pass $ 182,082 $ 8,520 $ — $ — $ — $ — $ — $ 190,602 Total $ 182,082 $ 8,520 $ — $ — $ — $ — $ — $ 190,602 Consolidated Risk Ratings: Pass $ 1,275,272 $ 749,567 $ 777,329 $ 610,043 $ 450,798 $ 1,241,138 $ 629,985 $ 5,734,132 Special Mention 563 22,763 8,088 1,006 2,157 14,491 2,168 51,236 Substandard — 5,186 8,358 27,832 7,336 25,709 258 74,679 Substandard Impaired — 503 10,044 4,656 8,239 18,590 3,805 45,837 Doubtful — — — — — — — — Total $ 1,275,835 $ 778,019 $ 803,819 $ 643,537 $ 468,530 $ 1,299,928 $ 636,216 $ 5,905,884 December 31, 2020 (In thousands) 2020 2019 2018 2017 2016 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 62,107 $ 52,384 $ 46,067 $ 15,873 $ 7,335 $ 17,873 $ 35,324 $ 236,963 Special Mention 206 245 5,918 — — 1,449 — 7,818 Substandard — — — — — 51 — 51 Substandard Impaired — — — 37 — 239 — 276 Doubtful — — — — — — — — Total $ 62,313 $ 52,629 $ 51,985 $ 15,910 $ 7,335 $ 19,612 $ 35,324 $ 245,108 Commercial real estate - owner-occupied Risk Ratings: Pass $ 155,953 $ 198,559 $ 156,276 $ 138,341 $ 148,389 $ 287,772 $ 14,255 $ 1,099,545 Special Mention 5,773 1,858 3,305 — 4,471 4,050 2 19,459 Substandard — — — 4,709 1,955 5,508 — 12,172 Substandard Impaired — 3,151 747 1,362 — 4,874 — 10,134 Doubtful — — — — — — — — Total $ 161,726 $ 203,568 $ 160,328 $ 144,412 $ 154,815 $ 302,204 $ 14,257 $ 1,141,310 December 31, 2020 (In thousands) 2020 2019 2018 2017 2016 Prior Revolving Total Commercial real estate - non owner-occupied Risk Ratings: Pass $ 159,299 $ 313,287 $ 201,112 $ 123,357 $ 175,623 $ 356,943 $ 8,596 $ 1,338,217 Special Mention — 431 9,487 7,580 10,240 114 — 27,852 Substandard — — 9,709 — 8,311 3,682 — 21,702 Substandard Impaired — 2,418 — — 125 5,540 — 8,083 Doubtful — — — — — — — — Total $ 159,299 $ 316,136 $ 220,308 $ 130,937 $ 194,299 $ 366,279 $ 8,596 $ 1,395,854 Residential real estate Risk Ratings: Pass $ 96,819 $ 144,329 $ 204,077 $ 205,046 $ 160,612 $ 159,742 $ 350,502 $ 1,321,127 Special Mention — — 33 720 — 966 479 2,198 Substandard 350 — — 896 — 1,452 100 2,798 Substandard Impaired 109 726 1,520 1,762 715 9,671 2,002 16,505 Doubtful — — — — — — — — Total $ 97,278 $ 145,055 $ 205,630 $ 208,424 $ 161,327 $ 171,831 $ 353,083 $ 1,342,628 Commercial and financial Risk Ratings: Pass $ 214,774 $ 146,511 $ 103,769 $ 60,782 $ 39,692 $ 53,758 $ 204,304 $ 823,590 Special Mention 71 946 965 5,612 67 635 209 8,505 Substandard 154 41 3,016 1,609 553 3,239 764 9,376 Substandard Impaired 317 4,595 3,199 2,292 2,074 704 81 13,262 Doubtful 1 — — — — — — 20 20 Total $ 215,316 $ 152,093 $ 110,949 $ 70,295 $ 42,386 $ 58,336 $ 205,378 $ 854,753 Consumer Risk Ratings: Pass $ 46,476 $ 43,143 $ 30,433 $ 18,937 $ 21,880 $ 9,488 $ 15,089 $ 185,446 Special Mention 58 27 14 41 42 21 1,854 2,057 Substandard — — — 42 4 151 228 425 Substandard Impaired 7 50 193 24 329 183 21 807 Doubtful — — — — — — — — Total $ 46,541 $ 43,220 $ 30,640 $ 19,044 $ 22,255 $ 9,843 $ 17,192 $ 188,735 Paycheck Protection Program Risk Ratings: Pass $ 566,961 $ — $ — $ — $ — $ — $ — $ 566,961 Total $ 566,961 $ — $ — $ — $ — $ — $ — $ 566,961 Consolidated Risk Ratings: Pass $ 1,302,389 $ 898,213 $ 741,734 $ 562,336 $ 553,531 $ 885,576 $ 628,070 $ 5,571,849 Special Mention 6,108 3,507 19,722 13,953 14,820 7,235 2,544 67,889 Substandard 504 41 12,725 7,256 10,823 14,083 1,092 46,524 Substandard Impaired 433 10,940 5,659 5,477 3,243 21,211 2,104 49,067 Doubtful 1 — — — — — — 20 20 Total $ 1,309,434 $ 912,701 $ 779,840 $ 589,022 $ 582,417 $ 928,105 $ 633,830 $ 5,735,349 1 Loans classified as doubtful are fully reserved at December 31, 2020. Loans Modified in Connection with COVID-19 Pandemic The CARES Act, which was signed into law on March 27, 2020, and amended by the Consolidated Appropriations Act on December 27, 2020, encourages financial institutions to practice prudent efforts to work with borrowers financially impacted by the COVID-19 pandemic by providing an option to exclude from TDR consideration certain loan modifications that might otherwise be categorized as TDRs under ASC 310-40. This option is available for modifications that are deemed to be COVID-related, where the borrower was not more than 30 days past due on December 31, 2019, and the modification is executed between March 1, 2020 and the earlier of (i) January 1, 2022 or (ii) 60 days after the end of the COVID-19 national emergency. Federal banking regulators issued similar guidance that also allows lenders to conclude that short-term modifications for borrowers affected by the pandemic should not be considered TDRs if the borrower was current at the time of modification. Seacoast has provided financially impacted borrowers with loan accommodations, primarily consisting of payment deferrals of up to six months. At its peak on June 30, 2020, loans on deferral represented $1.1 billion, or 21%, of total non-PPP loans. In the second half of 2020, the large majority of these borrowers successfully resumed making contractual payments, and the level of loans with accommodations has decreased to $2.2 million, or 0.04%, of total non-PPP loans as of September 30, 2021. Types of accommodations have included a combination of one or more of the following: full payment deferral, partial payment deferral, reduction of interest rate, extension of the original maturity date, or re-amortization of the facility. The following table presents the balance of loans with active payment accommodations at the specified dates, excluding PPP loans: (In thousands) September 30, 2021 December 31, 2020 Construction and land development $ — $ 1,032 Commercial real estate - owner-occupied 582 14,248 Commercial real estate - non owner-occupied — 32,549 Residential real estate 610 12,839 Commercial and financial 624 11,915 Consumer 338 1,479 Totals $ 2,154 $ 74,062 Troubled Debt Restructured Loans The Company’s TDR concessions granted to certain borrowers generally do not include forgiveness of principal balances, but 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. 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. The following table presents loans that were modified in a troubled debt restructuring during the three and nine months ended: Three Months Ended September 30, 2021 2020 (In thousands) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Construction and land development — $ — $ — — $ — $ — Commercial real estate - owner-occupied — — — — — — Commercial real estate - non owner-occupied — — — — — — Residential real estate 1 152 152 — — — Commercial and financial — — — — — — Consumer — — — 1 41 41 Totals 1 $ 152 $ 152 1 $ 41 $ 41 Nine Months Ended September 30, 2021 2020 (In thousands) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Construction and land development — $ — $ — — $ — $ — Commercial real estate - owner-occupied — — — — — — Commercial real estate - non owner-occupied — — — — — — Residential real estate 4 231 231 1 45 45 Commercial and financial 1 142 142 4 437 437 Consumer — — — 3 88 88 Totals 5 $ 373 $ 373 8 $ 570 $ 570 The TDRs described above resulted in a specific allowance for credit losses of $0.2 million as of September 30, 2021 and September 30, 2020. During the nine months ended September 30, 2021, there were two defaults totaling $0.1 million of loans that had been modified in TDRs within the preceding twelve months. During the nine months ended September 30, 2020, there were four defaults totaling $1.4 million of loans that had been modified to a TDR within the preceding twelve months. 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, $9,000 and $19,000 for the three months ended September 30, 2021, and 2020, respectively, and $20,000 and $65,000 for the nine months ended September 30, 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	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses Activity in the allowance for credit losses is summarized as follows: Three Months Ended September 30, 2021 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 4,053 $ — $ (1,459) $ — $ 10 $ (1) $ 2,603 Commercial real estate - owner-occupied 8,676 — (24) — — — 8,652 Commercial real estate - non owner-occupied 34,807 1,327 5,278 (1,327) — — 40,085 Residential real estate 12,543 — 1,456 (27) 158 (3) 14,127 Commercial and financial 18,016 1,719 (2) (535) 326 — 19,524 Consumer 3,032 — (158) (163) 126 (5) 2,832 Paycheck Protection Program — — — — — — — Totals $ 81,127 $ 3,046 $ 5,091 $ (2,052) $ 620 $ (9) $ 87,823 Three Months Ended September 30, 2020 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 7,161 $ 39 $ 475 $ — $ 26 $ — $ 7,701 Commercial real estate - owner occupied 5,562 954 689 — 26 (12) 7,219 Commercial real estate - non-owner occupied 38,992 2,096 (7,050) (25) 5 — 34,018 Residential real estate 20,453 27 (3,196) (19) 65 (5) 17,325 Commercial and financial 15,514 2,632 8,081 (1,776) 203 — 24,654 Consumer 3,568 15 (244) (355) 114 (2) 3,096 Paycheck Protection Program — — — — — — — Totals $ 91,250 $ 5,763 $ (1,245) $ (2,175) $ 439 $ (19) $ 94,013 Nine Months Ended September 30, 2021 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 4,920 $ — $ (2,438) $ — $ 124 $ (3) $ 2,603 Commercial real estate - owner-occupied 9,868 — (1,216) — — — 8,652 Commercial real estate - non owner-occupied 38,266 1,327 1,817 (1,327) 2 — 40,085 Residential real estate 17,500 — (4,323) (48) 1,008 (10) 14,127 Commercial and financial 18,690 1,719 1,172 (2,855) 798 — 19,524 Consumer 3,489 — (491) (547) 388 (7) 2,832 Paycheck Protection Program — — — — — — Totals $ 92,733 $ 3,046 $ (5,479) $ (4,777) $ 2,320 $ (20) $ 87,823 Nine Months Ended September 30, 2020 (In thousands) Beginning Balance Impact of Adoption of ASC 326 Initial Allowance on PCD Loans Acquired During the Period Provision for Credit Losses Charge- Offs Recoveries TDR Allowance Adjustments Ending Balance Construction and land development $ 1,842 $ 1,479 $ 87 $ 4,202 $ — $ 92 $ (1) $ 7,701 Commercial real estate - owner occupied 5,361 80 1,161 655 (45) 44 (37) 7,219 Commercial real estate - non-owner occupied 7,863 9,341 2,236 14,578 (37) 37 — 34,018 Residential real estate 7,667 5,787 124 3,638 (150) 283 (24) 17,325 Commercial and financial 9,716 3,677 2,643 12,144 (4,642) 1,116 — 24,654 Consumer 2,705 862 28 662 (1,442) 284 (3) 3,096 Paycheck Protection Program — — — — — — — — Totals $ 35,154 $ 21,226 $ 6,279 $ 35,879 $ (6,316) $ 1,856 $ (65) $ 94,013 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 to project losses over a three-year forecast period. Forecast data is sourced primarily from Moody’s Analytics, a firm widely recognized for its research, analysis, and economic forecasts. For portfolio segments with a weighted average life longer than three years, the Company reverts to longer-term historical loss experience to estimate losses over the remaining life of the loans within each segment. Historical credit losses provide the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level, loan to value ratios, borrower credit characteristics, loan seasoning or term as well as for changes in current and forecasted environmental conditions, such as changes in unemployment rates, property values, occupancy rates, and other macroeconomic metrics. As of September 30, 2021, the Company utilized Moody’s most recent “U.S. Macroeconomic Outlook Baseline” scenario and considered the uncertainty associated with the assumptions in the Baseline scenario, including the potential for increasing COVID-19 infections, including from variants, and the resulting potential erosion in consumer confidence, and the risk that government stimulus programs are less effective than expected. Outcomes in any or all of these factors could differ from the Baseline scenario, 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. In the Construction and Land Development segment, the decrease in reserves during the quarter reflects lower loan balances and improved economic variables relating to residential real estate. 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, increases in the allowance resulting from loan growth were offset by the impact of improved economic variables relating to unemployment. Risk characteristics include but are not limited to, collateral type, loan seasoning, and lien position. In the Commercial Real Estate - Non Owner-Occupied segment, the increase in reserves reflects higher loan balances, partially offset by improved economic forecast variables including lower unemployment. 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, loan seasoning, and lien position 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 reserves reflects the impact of higher loan balances resulting from organic growth and loans acquired, partially offset by improved economic forecast variables including lower unemployment. Risk characteristics considered for this segment include, but are not limited to, collateral type, 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 increase in reserves is attributed to 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 decline in the reserve during the quarter reflects lower loan balances and improved economic forecast variables. 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 composed of specific allowances for loans individually evaluated and general allowances for loans grouped into loan pools based on similar characteristics, which are collectively evaluated. The Company’s loan portfolio and related allowance at September 30, 2021 and December 31, 2020 is shown in the following tables: September 30, 2021 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ 80 $ 3 $ 227,379 $ 2,600 $ 227,459 $ 2,603 Commercial real estate - owner occupied 5,689 420 1,195,647 8,232 1,201,336 8,652 Commercial real estate - non owner-occupied 5,190 95 1,668,397 39,990 1,673,587 40,085 Residential real estate 18,654 513 1,448,675 13,614 1,467,329 14,127 Commercial and financial 15,478 3,350 967,074 16,174 982,552 19,524 Consumer 746 565 162,273 2,267 163,019 2,832 Paycheck Protection Program — — 190,602 — 190,602 — Totals $ 45,837 $ 4,946 $ 5,860,047 $ 82,877 $ 5,905,884 $ 87,823 December 31, 2020 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ 276 $ 13 $ 244,832 $ 4,907 $ 245,108 $ 4,920 Commercial real estate - owner occupied 10,243 402 1,131,067 9,466 1,141,310 9,868 Commercial real estate - non owner-occupied 8,083 1,640 1,387,771 36,626 1,395,854 38,266 Residential real estate 16,506 2,064 1,326,122 15,436 1,342,628 17,500 Commercial and financial 13,281 3,498 841,472 15,192 854,753 18,690 Consumer 807 91 187,928 3,398 188,735 3,489 Paycheck Protection Program — — 566,961 — 566,961 — Totals $ 49,196 $ 7,708 $ 5,686,153 $ 85,025 $ 5,735,349 $ 92,733

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Derivatives Back-to-Back Swaps The Company offers interest rate swaps when requested by customers to allow them to hedge the risk of rising interest rates on their variable rate loans. Upon entering into these swaps, the Company enters into offsetting positions with counterparties in order to minimize the interest rate risk. These back-to-back swaps qualify as freestanding financial derivatives with the fair values reported in other assets and other liabilities. The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under the arrangements for financial statement presentation purposes. Gains and losses on these back-to-back swaps, which offset, are recorded through noninterest income. No net gains or losses have been recognized to date on these instruments. As of September 30, 2021, the interest rate swaps had an aggregate notional value of $180.6 million, with a fair value of $9.1 million recorded in other assets and other liabilities. As of December 31, 2020, the interest rate swaps had an aggregate notional value of $182.4 million, with a fair value of $13.3 million recorded in other assets and other liabilities. The weighted average maturity was 6.9 years at September 30, 2021 and 7.5 years at December 31, 2020. 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. For the three and nine months ended September 30, 2021, the Company recognized a loss through other comprehensive income of $0.2 million and $0.5 million, respectively, and reclassified $0.1 million and $0.2 million, respectively, out of accumulated other comprehensive income and into interest income. As of September 30, 2021 and December 31, 2020, the interest rate floors had a fair value of $0.5 million and $1.0 million, respectively, recorded in other assets in the consolidated balance sheet. Over the next twelve months the Company expects to reclassify $0.4 million from accumulated other comprehensive income into interest income related to these agreements. (In thousands) Notional Amount Fair Value Balance Sheet Category At September 30, 2021 Back-to-back swaps $ 180,610 $ 9,110 Other Assets and Other Liabilities Interest rate floors 300,000 514 Other Assets At December 31, 2020 Back-to-back swaps $ 182,379 $ 13,339 Other Assets and Other Liabilities Interest rate floors 300,000 1,004 Other Assets

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	9 Months Ended
	Sep. 30, 2021
Brokers and Dealers [Abstract]
Securities Sold Under Agreements to Repurchase	Securities Sold Under Agreements to Repurchase Securities sold under agreements to repurchase are accounted for as secured borrowings. For securities sold under agreements to repurchase, the Company is required to pledge collateral with value sufficient to fully collateralized borrowings. Company securities pledged were as follows by collateral type and maturity as of: (In thousands) September 30, 2021 December 31, 2020 Fair value of pledged securities - overnight and continuous: Mortgage-backed securities and collateralized mortgage obligations of U.S. government sponsored entities $ 134,801 $ 137,268

Noninterest Income and Expense

Noninterest Income and Expense	9 Months Ended
	Sep. 30, 2021
Brokers and Dealers [Abstract]
Noninterest Income and Expense	Noninterest Income and Expense Details of noninterest income and expenses for the three and nine months ended September 30, 2021 and 2020 are as follows: Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2021 2020 2021 2020 Noninterest income Service charges on deposit accounts $ 2,495 $ 2,242 $ 7,171 $ 7,006 Interchange income 4,131 3,682 12,096 10,115 Wealth management income 2,562 1,972 7,272 5,558 Mortgage banking fees 2,550 5,283 9,752 11,050 Marine finance fees 152 242 518 545 SBA gains 812 252 1,331 572 BOLI income 1,128 899 2,859 2,672 Other income 5,228 2,370 11,221 7,869 19,058 16,942 52,220 45,387 Securities (losses) gains, net (30) 4 (199) 1,253 Total $ 19,028 $ 16,946 $ 52,021 $ 46,640 Noninterest expense Salaries and wages $ 27,919 $ 23,125 $ 72,278 $ 67,049 Employee benefits 4,177 3,995 13,110 11,629 Outsourced data processing costs 5,610 6,128 14,754 14,820 Telephone/data lines 810 705 2,433 2,210 Occupancy 3,541 3,858 10,640 10,596 Furniture and equipment 1,567 1,576 3,987 4,557 Marketing 1,353 1,513 3,523 3,788 Legal and professional fees 4,151 3,018 8,915 8,658 FDIC assessments 651 474 1,692 740 Amortization of intangibles 1,306 1,497 3,729 4,436 Foreclosed property expense and net (gain) loss on sale 66 512 (89) 442 Provision for credit losses on unfunded commitments 133 756 133 980 Other 3,984 4,517 12,067 11,966 Total $ 55,268 $ 51,674 $ 147,172 $ 141,871

Equity Capital

Equity Capital	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Equity Capital	Equity CapitalThe Company is well capitalized and at September 30, 2021, the Company and the Company’s principal banking subsidiary, Seacoast Bank, exceeded the common equity Tier 1 (CET1) capital ratio regulatory threshold of 6.5% for well-capitalized institutions under the Basel III standardized transition approach, as well as risk-based and leverage ratio requirements for well capitalized banks under the regulatory framework for prompt corrective action.

Contingent Liabilities

Contingent Liabilities	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities	Contingent LiabilitiesThe Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial condition, operating results or cash flows.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at September 30, 2021 and December 31, 2020 included: (In thousands) Fair Value Quoted Prices Significant Significant At September 30, 2021 Financial Assets Available-for-sale debt securities 1 $ 1,546,155 $ 199 $ 1,545,956 $ — Derivative financial instruments 2 9,624 — 9,624 — Loans held for sale 2 49,597 — 49,597 — Loans 3 9,945 — 942 9,003 Other real estate owned 4 13,628 — 390 13,238 Equity securities 5 9,404 9,404 — — Financial Liabilities Derivative financial instruments 2 $ 9,110 $ — $ 9,110 $ — At December 31, 2020 Financial Assets Available-for-sale debt securities 1 $ 1,398,157 $ 101 $ 1,398,056 $ — Derivative financial instruments 2 14,343 — 14,343 — Loans held for sale 2 68,890 — 68,890 — Loans 3 8,806 — 1,900 6,906 Other real estate owned 4 12,750 — 72 12,678 Equity securities 5 6,530 6,530 — — Financial Liabilities Derivative financial instruments 2 $ 13,339 $ — $ 13,339 $ — 1 See “Note D – Securities” for further detail of fair value of individual investment categories. 2 Recurring fair value basis determined using observable market data. 3 S e e “ Note E – Loans .” N onrecurring fair value adjustments to collateral-dependent loans reflect full or partial write-downs that are based on current appraised values of the collateral in accordance with ASC Topic 310. 4 Fair value is measured on a nonrecurring basis in accordance with ASC Topic 360. 5 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 creditworthiness 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 that the fair value is the best indicator of the resolution of these loans. Fair market value changes occur due to changes in interest rates, the borrower’s credit, the secondary loan market and the market for a borrower’s debt. Interest income is recorded based on the contractual terms of the loan and in accordance with the Company’s policy on loans held for investment. None of the loans were 90 days or more past due or on nonaccrual as of September 30, 2021 and December 31, 2020. The aggregate fair value and contractual balance of loans held for sale as of September 30, 2021 and December 31, 2020 is as follows: (In thousands) September 30, 2021 December 31, 2020 Aggregate fair value $ 49,597 $ 68,890 Contractual balance 48,172 66,415 Excess 1,425 2,475 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. These evaluations may use either a single valuation approach or a combination of approaches, such as comparative sales, cost and/or income approach. A significant unobservable input in the income approach is the estimated capitalization rate for a given piece of collateral. At September 30, 2021 capitalization rates utilized to determine fair value of the underlying collateral averaged approximately 7.0%. 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 $14.2 million with a specific reserve of $4.3 million at September 30, 2021, compared to $16.5 million with a specific reserve of $7.7 million at December 31, 2020. For loans classified as Level 3, changes included loan additions of $5.4 million offset by $2.6 million in paydowns and charge-offs and $0.7 million in loans that returned to accruing status for the nine months ended September 30, 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 a Level 2 input. When the fair value of OREO is based on appraisals which require significant adjustments to market-based valuation inputs or apply an income approach based on unobservable cash flows, the fair value of OREO is classified as Level 3. For OREO classified as Level 3 at September 30, 2021, changes during the nine months ended included additions of $2.1 million offset by sales and write--downs of $1.6 million. 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 nine months ended September 30, 2021 and 2020. The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of September 30, 2021 and December 31, 2020 is as follows: (In thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2021 Financial Assets Debt securities held-to-maturity 1 $ 526,502 $ — $ 518,464 $ — Time deposits with other banks 750 — 757 — Loans, net 5,808,116 — — 5,810,038 Financial Liabilities Deposit liabilities 8,334,172 — — 8,336,134 Subordinated debt 71,576 — 58,399 — December 31, 2020 Financial Assets Debt securities held-to-maturity 1 $ 184,484 $ — $ 192,179 $ — Time deposits with other banks 750 — 762 — Loans, net 5,633,810 — — 5,686,019 Financial Liabilities Deposit liabilities 6,932,561 — — 6,936,097 Subordinated debt 71,365 — 58,227 — 1 See “Note D – Securities” for further detail 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, FHLB borrowings and securities sold under agreements to repurchase, maturing within 30 days. The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it is practicable to estimate that value at September 30, 2021 and December 31, 2020: Held-to-maturity debt securities : These debt securities are reported at fair value utilizing level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available. The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models. Loans : Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable-rate interest terms as well as performing and nonperforming categories. The fair value of loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC Topic 820. Deposit liabilities : The fair value of demand deposits, savings accounts and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Business Combinations	Business Combinations Proposed Acquisition of Sabal Palm Bancorp, Inc. On August 23, 2021, the Company announced that it had entered into an agreement and plan of merger with Sabal Palm Bancorp, Inc. (“Sabal Palm”) and its wholly-owned subsidiary, Sabal Palm Bank. Sabal Palm operates three branches across the Sarasota, FL market with $255 million in loans and $389 million in deposits as of September 30, 2021. The acquisition is expected to close in the first quarter of 2022, pending receipt of regulatory and shareholder approvals. Proposed Acquisition of Business Bank of Florida, Inc. On August 23, 2021, the Company announced that it had entered into an agreement and plan of merger with Business Bank of Florida, Corp (“BBFC”) and its wholly-owned subsidiary, Florida Business Bank. BBFC operates one branch in Melbourne, FL with $139 million in loans and $169 million in deposits as of September 30, 2021. The acquisition is expected to close in the first quarter of 2022 pending receipt of regulatory and shareholder approvals. 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 common stock issued 2,687 Multiplied by common stock price per share on August 6, 2021 $ 32.19 Value of common stock issued 86,487 Cash paid for fractional shares 7 Fair value of 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. 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) Initially 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 of Fourth Street Banking Company On August 21, 2020, the Company completed its acquisition of Fourth Street Banking Company (“Fourth Street”). Simultaneously, upon completion of the merger of Fourth Street and the Company, Fourth Street's wholly owned subsidiary bank, Freedom Bank, was merged with and into Seacoast Bank. Prior to the acquisition, Freedom Bank operated two branches in St. Petersburg, Florida. As a result of this acquisition, the Company expects to enhance its presence in St. Petersburg, 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 Fourth Street. Under the terms of the definitive agreement, each share of Fourth Street common stock was converted into the right to receive 0.1275 share of Seacoast common stock. (In thousands, except per share data) August 21, 2020 Number of Fourth Street common shares outstanding 11,220 Shares issued upon conversion of convertible debt 5,405 Per share exchange ratio 0.1275 Number of shares of common stock issued 2,120 Multiplied by common stock price per share on August 21, 2020 $ 19.40 Value of common stock issued 41,121 Cash paid for Fourth Street vested stock options 596 Total purchase price $ 41,717 The acquisition of Fourth Street was accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations . The Company recognized goodwill of $9.0 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. (In thousands) August 21, 2020 Assets: Cash $ 38,082 Investment securities 3,498 Loans 303,434 Bank premises and equipment 9,480 Core deposit intangibles 1,310 Goodwill 9,030 Other assets 7,088 Total assets $ 371,922 Liabilities: Deposits $ 329,662 Other liabilities 543 Total liabilities $ 330,205 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. August 21, 2020 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 9,197 $ 8,851 Commercial real estate - owner-occupied 77,936 75,215 Commercial real estate - non owner-occupied 76,014 71,171 Residential real estate 23,548 23,227 Commercial and financial 72,745 68,096 Consumer 2,748 2,694 PPP loans 55,005 54,180 Total acquired loans $ 317,193 $ 303,434 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 21, 2020 Book balance of loans at acquisition $ 59,455 Allowance for credit losses at acquisition (5,763) Non-credit related discount (4,319) Total PCD loans acquired $ 49,373 The acquisition of Fourth Street resulted in the addition of $10.4 million in allowance for credit losses, including the $5.8 million identified in the table above for PCD loans, and $4.6 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 First Bank of the Palm Beaches On March 13, 2020, the Company completed its acquisition of First Bank of the Palm Beaches (“FBPB”). FBPB was merged with and into Seacoast Bank. FBPB operated two branches in the Palm Beach market. As a result of this acquisition, the Company expects to enhance its presence in the Palm Beach market, 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 FBPB. Under the terms of the definitive agreement, each share of FBPB common stock was converted into the right to receive 0.2000 share of Seacoast common stock. (In thousands, except per share data) March 13, 2020 Number of FBPB common shares outstanding 5,213 Per share exchange ratio 0.2000 Number of shares of common stock issued 1,043 Multiplied by common stock price per share on March 13, 2020 $ 20.17 Value of common stock issued 21,031 Cash paid for FBPB vested stock options 866 Total purchase price $ 21,897 The acquisition of FBPB was accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations . The Company recognized goodwill of $6.9 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 adjustments reflected in the table below are the result of information obtained subsequent to the initial measurement. (In thousands) Initially Measured Measurement Period Adjustments As Adjusted March 13, 2020 Assets: Cash $ 34,749 $ — $ 34,749 Investment securities 447 — 447 Loans 146,839 (62) 146,777 Bank premises and equipment 6,086 — 6,086 Core deposit intangibles 819 — 819 Goodwill 6,799 62 6,861 Other assets 1,285 20 1,305 Total assets $ 197,024 $ 20 $ 197,044 Liabilities: Deposits $ 173,741 $ — $ 173,741 Other liabilities 1,386 20 1,406 Total liabilities $ 175,127 $ 20 $ 175,147 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. March 13, 2020 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 9,493 $ 9,012 Commercial real estate - owner-occupied 46,221 45,171 Commercial real estate - non owner-occupied 36,268 35,079 Residential real estate 47,569 47,043 Commercial and financial 9,659 9,388 Consumer 1,132 1,084 Total acquired loans $ 150,342 $ 146,777 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) March 13, 2020 Book balance of loans at acquisition $ 43,682 Allowance for credit losses at acquisition (516) Non-credit related discount (128) Total PCD loans acquired $ 43,038 The acquisition of FBPB resulted in the addition of $2.3 million in allowance for credit losses, including the $0.5 million 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. Pro-Forma Information Pro-forma data for the three and nine months ended September 30, 2021 presents information as if the acquisition of Legacy Bank occurred at the beginning of 2020, as follows: Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except per share amounts) 2021 2020 2021 2020 Net interest income $ 73,309 $ 68,164 $ 216,682 $ 207,388 Net income 43,401 24,098 104,521 39,930 EPS - basic $ 0.75 $ 0.42 $ 1.81 $ 0.72 EPS - diluted 0.74 0.44 1.79 0.71

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation: The accompanying unaudited condensed consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the "Company") have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation.
Use of Estimates	Use of Estimates: The preparation of these condensed 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.
Recently Issued Accounting Standards, Not Yet Adopted	Recently Issued Accounting Standards, Not Yet AdoptedNone applicable this period.
Fair Value Measurement	Held-to-maturity debt securities : These debt securities are reported at fair value utilizing level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available. The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models. Loans : Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable-rate interest terms as well as performing and nonperforming categories. The fair value of loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC Topic 820. Deposit liabilities : The fair value of demand deposits, savings accounts and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands, except per share data) 2021 2020 2021 2020 Basic earnings per share Net income $ 22,944 $ 22,628 $ 88,073 $ 48,417 Average common shares outstanding 57,148 53,978 55,954 52,926 Net income per share $ 0.40 $ 0.42 $ 1.57 $ 0.91 Diluted earnings per share Net income $ 22,944 $ 22,628 $ 88,073 $ 48,417 Average common shares outstanding 57,148 53,978 55,954 52,926 Add: Dilutive effect of employee restricted stock and stock options 497 323 487 399 Average diluted shares outstanding 57,645 54,301 56,441 53,325 Net income per share $ 0.40 $ 0.42 $ 1.56 $ 0.91 Net income has not been allocated to unvested restricted stock awards that are participating securities because the amounts that would be allocated are not material to net income per share of common stock. Unvested restricted stock awards that are participating securities represent less than one percent of all of the outstanding shares of common stock for each of the periods presented.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost and Fair Value of Securities Available for Sale	The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale and held-to-maturity at September 30, 2021 and December 31, 2020 are summarized as follows: September 30, 2021 (In thousands) Amortized Gross Gross Unrealized Fair Debt securities available-for-sale U.S. Treasury securities and obligations of U.S. government agencies $ 6,785 $ 371 $ (2) $ 7,154 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,147,743 12,378 (9,450) 1,150,671 Private mortgage-backed securities and collateralized mortgage obligations 75,754 1,710 (236) 77,228 Collateralized loan obligations 277,262 149 (105) 277,306 Obligations of state and political subdivisions 32,016 1,837 (57) 33,796 Totals $ 1,539,560 $ 16,445 $ (9,850) $ 1,546,155 Debt securities held-to-maturity Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 526,502 $ 4,702 $ (12,740) $ 518,464 Totals $ 526,502 $ 4,702 $ (12,740) $ 518,464 December 31, 2020 (In thousands) Amortized Gross Unrealized Gross Unrealized Fair Debt securities available-for-sale U.S. Treasury securities and obligations of U.S. government agencies $ 8,250 $ 528 $ (1) $ 8,777 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,038,437 23,457 (1,240) 1,060,654 Private mortgage-backed securities and collateralized mortgage obligations 89,284 2,131 (210) 91,205 Collateralized loan obligations 202,563 279 (647) 202,195 Obligations of state and political subdivisions 33,005 2,321 — 35,326 Totals $ 1,371,539 $ 28,716 $ (2,098) $ 1,398,157 Debt securities held-to-maturity Mortgage-backed securities of U.S. government-sponsored entities $ 184,484 $ 7,818 $ (123) $ 192,179 Totals $ 184,484 $ 7,818 $ (123) $ 192,179
Summary of Amortized Cost and Fair Value of Held-to-Maturity Securities	The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale and held-to-maturity at September 30, 2021 and December 31, 2020 are summarized as follows: September 30, 2021 (In thousands) Amortized Gross Gross Unrealized Fair Debt securities available-for-sale U.S. Treasury securities and obligations of U.S. government agencies $ 6,785 $ 371 $ (2) $ 7,154 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,147,743 12,378 (9,450) 1,150,671 Private mortgage-backed securities and collateralized mortgage obligations 75,754 1,710 (236) 77,228 Collateralized loan obligations 277,262 149 (105) 277,306 Obligations of state and political subdivisions 32,016 1,837 (57) 33,796 Totals $ 1,539,560 $ 16,445 $ (9,850) $ 1,546,155 Debt securities held-to-maturity Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities $ 526,502 $ 4,702 $ (12,740) $ 518,464 Totals $ 526,502 $ 4,702 $ (12,740) $ 518,464 December 31, 2020 (In thousands) Amortized Gross Unrealized Gross Unrealized Fair Debt securities available-for-sale U.S. Treasury securities and obligations of U.S. government agencies $ 8,250 $ 528 $ (1) $ 8,777 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 1,038,437 23,457 (1,240) 1,060,654 Private mortgage-backed securities and collateralized mortgage obligations 89,284 2,131 (210) 91,205 Collateralized loan obligations 202,563 279 (647) 202,195 Obligations of state and political subdivisions 33,005 2,321 — 35,326 Totals $ 1,371,539 $ 28,716 $ (2,098) $ 1,398,157 Debt securities held-to-maturity Mortgage-backed securities of U.S. government-sponsored entities $ 184,484 $ 7,818 $ (123) $ 192,179 Totals $ 184,484 $ 7,818 $ (123) $ 192,179
Summary of Investments Classified by Contractual Maturity	Securities not due at a single maturity date are shown separately. September 30, 2021 Held-to-Maturity Available-for-Sale (In thousands) Amortized Fair Amortized Fair Due in less than one year $ — $ — $ 1,418 $ 1,442 Due after one year through five years — — 13,892 14,828 Due after five years through ten years — — 8,376 8,764 Due after ten years — — 15,115 15,916 — — 38,801 40,950 Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 526,502 518,464 1,147,743 1,150,671 Private mortgage-backed securities and collateralized mortgage obligations — — 75,754 77,228 Collateralized loan obligations — — 277,262 277,306 Totals $ 526,502 $ 518,464 $ 1,539,560 $ 1,546,155
Schedule of Debt Securities in Unrealized Loss Position	The tables below indicate the fair value of available-for-sale debt securities with unrealized losses for which no allowance for credit losses has been recorded. September 30, 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 $ — $ — $ 248 $ (2) $ 248 $ (2) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 660,028 (8,696) 15,350 (754) 675,378 (9,450) Private mortgage-backed securities and collateralized mortgage obligations 13,018 (206) 2,710 (30) 15,728 (236) Collateralized loan obligations 64,232 (58) 9,459 (47) 73,691 (105) Obligations of state and political subdivisions 5,443 (57) — — 5,443 (57) Totals $ 742,721 $ (9,017) $ 27,767 $ (833) $ 770,488 $ (9,850) December 31, 2020 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 $ — $ — $ 256 $ (1) $ 256 $ (1) Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities 203,405 (1,218) 569 (22) 203,974 (1,240) Private mortgage-backed securities and collateralized mortgage obligations 23,997 (210) — — 23,997 (210) Collateralized loan obligations 104,697 (102) 72,513 (545) 177,210 (647) Totals $ 332,099 $ (1,530) $ 73,338 $ (568) $ 405,437 $ (2,098)

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans	The following tables present net loan balances by segment as of: September 30, 2021 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 190,344 $ 37,067 $ 48 $ 227,459 Commercial real estate - owner-occupied 951,119 218,128 32,089 1,201,336 Commercial real estate - non owner-occupied 1,166,220 428,095 79,272 1,673,587 Residential real estate 1,278,138 181,344 7,847 1,467,329 Commercial and financial 865,064 97,642 19,846 982,552 Consumer 157,916 5,092 11 163,019 Paycheck Protection Program 153,842 36,760 — 190,602 Totals $ 4,762,643 $ 1,004,128 $ 139,113 $ 5,905,884 December 31, 2020 (In thousands) Portfolio Loans Acquired Non-PCD Loans PCD Loans Total Construction and land development $ 216,420 $ 26,250 $ 2,438 $ 245,108 Commercial real estate - owner occupied 854,769 247,090 39,451 1,141,310 Commercial real estate - non-owner occupied 1,043,459 323,273 29,122 1,395,854 Residential real estate 1,155,914 176,105 10,609 1,342,628 Commercial and financial 743,846 94,627 16,280 854,753 Consumer 181,797 6,660 278 188,735 Paycheck Protection Program 515,532 51,429 — 566,961 Totals $ 4,711,737 $ 925,434 $ 98,178 $ 5,735,349
Schedule of Past Due Financing Receivables	The following tables present the status of net loan balances as of September 30, 2021 and December 31, 2020. Loans on short-term payment deferral at the reporting date are reported as current. September 30, 2021 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 190,310 $ — $ — $ — $ 34 $ 190,344 Commercial real estate - owner-occupied 949,282 671 — — 1,166 951,119 Commercial real estate - non owner-occupied 1,164,458 — — — 1,762 1,166,220 Residential real estate 1,267,081 340 35 — 10,682 1,278,138 Commercial and financial 856,579 1,179 99 1,814 5,393 865,064 Consumer 157,468 269 34 — 145 157,916 Paycheck Protection Program 1 153,484 358 — — — 153,842 Total Portfolio Loans $ 4,738,662 $ 2,817 $ 168 $ 1,814 $ 19,182 $ 4,762,643 Acquired Non-PCD Loans Construction and land development $ 37,067 $ — $ — $ — $ — $ 37,067 Commercial real estate - owner-occupied 217,436 — 692 — — 218,128 Commercial real estate - non owner-occupied 427,170 — — — 925 428,095 Residential real estate 178,504 300 — — 2,540 181,344 Commercial and financial 96,799 334 — — 509 97,642 Consumer 4,639 15 — — 438 5,092 Paycheck Protection Program 1 36,760 — — — — 36,760 Total Acquired Non-PCD Loans $ 998,375 $ 649 $ 692 $ — $ 4,412 $ 1,004,128 PCD Loans Construction and land development $ 42 $ — $ — $ — $ 6 $ 48 Commercial real estate - owner-occupied 28,739 — — — 3,350 32,089 Commercial real estate - non owner-occupied 76,768 — — — 2,504 79,272 Residential real estate 6,007 24 — — 1,816 7,847 Commercial and financial 17,678 743 83 — 1,342 19,846 Consumer 11 — — 11 Total PCD Loans $ 129,245 $ 767 $ 83 $ — $ 9,018 $ 139,113 Total Loans $ 5,866,282 $ 4,233 $ 943 $ 1,814 $ 32,612 $ 5,905,884 1 Paycheck Protection Program loans are not reflected as past due when forgiveness applications are being processed by the SBA. Repayment of principal and interest is fully guaranteed by the U.S. government. December 31, 2020 (In thousands) Current Accruing Accruing Accruing Nonaccrual Total Portfolio Loans Construction and land development $ 216,262 $ — $ — $ — $ 158 $ 216,420 Commercial real estate - owner occupied 851,222 1,076 — — 2,471 854,769 Commercial real estate - non-owner occupied 1,041,306 — — — 2,153 1,043,459 Residential real estate 1,142,893 3,002 1,427 61 8,531 1,155,914 Commercial and financial 737,362 135 1,967 — 4,382 743,846 Consumer 180,879 203 138 2 575 181,797 Paycheck Protection Program 515,532 — — — — 515,532 Total Portfolio Loans $ 4,685,456 $ 4,416 $ 3,532 $ 63 $ 18,270 $ 4,711,737 Acquired Non-PCD Loans Construction and land development $ 26,250 $ — $ — $ — $ — $ 26,250 Commercial real estate - owner occupied 244,486 — — — 2,604 247,090 Commercial real estate - non-owner occupied 322,264 — — — 1,009 323,273 Residential real estate 171,507 1,605 104 — 2,889 176,105 Commercial and financial 93,223 216 — — 1,188 94,627 Consumer 6,640 20 — — — 6,660 Paycheck Protection Program 51,429 — — — — 51,429 Total Acquired Non-PCD Loans $ 915,799 $ 1,841 $ 104 $ — $ 7,690 $ 925,434 PCD Loans Construction and land development $ 2,429 $ — $ — $ — $ 9 $ 2,438 Commercial real estate - owner occupied 36,345 — — — 3,106 39,451 Commercial real estate - non-owner occupied 24,200 — — — 4,922 29,122 Residential real estate 9,537 — — — 1,072 10,609 Commercial and financial 15,121 125 — — 1,034 16,280 Consumer 271 — — — 7 278 Total PCD Loans $ 87,903 $ 125 $ — $ — $ 10,150 $ 98,178 Total Loans $ 5,689,158 $ 6,382 $ 3,636 $ 63 $ 36,110 $ 5,735,349
Schedule of Nonaccrual Loans by Loan Category	The following tables present net balances of loans on nonaccrual status and the related allowance for credit losses, if any, as of: September 30, 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 $ 40 $ — $ 40 $ — Commercial real estate - owner-occupied 3,490 1,026 4,516 417 Commercial real estate - non owner-occupied 3,739 1,452 5,191 95 Residential real estate 14,345 693 15,038 362 Commercial and financial 3,443 3,801 7,244 2,658 Consumer 33 550 583 550 Totals $ 25,090 $ 7,522 $ 32,612 $ 4,082 December 31, 2020 (In thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With an Allowance Total Nonaccrual Loans Allowance for Credit Losses Construction and land development $ 148 $ 19 $ 167 $ 8 Commercial real estate - owner-occupied 7,893 288 8,181 287 Commercial real estate - non owner-occupied 5,666 2,418 8,084 1,640 Residential real estate 9,520 2,972 12,492 1,587 Commercial and financial 3,175 3,429 6,604 2,235 Consumer 222 360 582 75 Totals $ 26,624 $ 9,486 $ 36,110 $ 5,832
Schedule of Collateral Dependent Loans	The following table presents collateral-dependent loans as of: (In thousands) September 30, 2021 December 31, 2020 Construction and land development $ 31 $ 189 Commercial real estate - owner-occupied 5,152 11,992 Commercial real estate - non owner-occupied 5,190 7,285 Residential real estate 15,039 16,652 Commercial and financial 9,302 11,198 Consumer 583 586 Totals $ 35,297 $ 47,902
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: September 30, 2021 (In thousands) 2021 2020 2019 2018 2017 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 62,879 $ 38,326 $ 38,517 $ 26,344 $ 4,771 $ 20,952 $ 35,590 $ 227,379 Special Mention — — — — — — — — Substandard — — — — — — — — Substandard Impaired — — — — — 80 — 80 Doubtful — — — — — — — — Total $ 62,879 $ 38,326 $ 38,517 $ 26,344 $ 4,771 $ 21,032 $ 35,590 $ 227,459 Commercial real estate - owner-occupied Risk Ratings: Pass $ 155,499 $ 159,752 $ 186,442 $ 142,027 $ 132,413 $ 385,244 $ 8,951 $ 1,170,328 Special Mention — 6,588 5,416 655 220 5,690 — 18,569 Substandard — — — 77 3,903 2,770 — 6,750 Substandard Impaired — — 2,811 256 1,104 1,518 — 5,689 Doubtful — — — — — — — — Total $ 155,499 $ 166,340 $ 194,669 $ 143,015 $ 137,640 $ 395,222 $ 8,951 $ 1,201,336 Commercial real estate - non owner-occupied Risk Ratings: Pass $ 248,842 $ 201,940 $ 303,903 $ 202,400 $ 123,851 $ 513,792 $ 7,203 $ 1,601,931 Special Mention — — 2,363 — 1,620 8,397 — 12,380 Substandard — 4,798 3,856 24,078 1,907 19,446 — 54,085 Substandard Impaired — — 1,052 — — 4,139 — 5,191 Doubtful — — — — — — — — Total $ 248,842 $ 206,738 $ 311,174 $ 226,478 $ 127,378 $ 545,774 $ 7,203 $ 1,673,587 Residential real estate Risk Ratings: Pass $ 364,563 $ 119,039 $ 110,560 $ 136,044 $ 132,151 $ 243,005 $ 342,581 $ 1,447,943 Special Mention — — — 47 — 205 285 537 Substandard — — — — — 160 35 195 Substandard Impaired — 488 728 40 5,358 9,335 2,705 18,654 Doubtful — — — — — — — — Total $ 364,563 $ 119,527 $ 111,288 $ 136,131 $ 137,509 $ 252,705 $ 345,606 $ 1,467,329 September 30, 2021 (In thousands) 2021 2020 2019 2018 2017 Prior Revolving Total Commercial and financial Risk Ratings: Pass $ 229,168 $ 187,063 $ 107,743 $ 83,267 $ 45,562 $ 60,048 $ 222,822 $ 935,673 Special Mention 563 16,137 219 247 275 149 406 17,996 Substandard — 388 4,502 3,666 1,491 3,333 25 13,405 Substandard Impaired — — 5,394 4,335 1,698 3,389 662 15,478 Doubtful — — — — — — — — Total $ 229,731 $ 203,588 $ 117,858 $ 91,515 $ 49,026 $ 66,919 $ 223,915 $ 982,552 Consumer Risk Ratings: Pass $ 32,239 $ 34,927 $ 30,164 $ 19,961 $ 12,050 $ 18,097 $ 12,838 $ 160,276 Special Mention — 38 90 57 42 50 1,477 1,754 Substandard — — — 11 35 — 198 244 Substandard Impaired — 15 59 25 79 129 438 745 Doubtful — — — — — — — — Total $ 32,239 $ 34,980 $ 30,313 $ 20,054 $ 12,206 $ 18,276 $ 14,951 $ 163,019 Paycheck Protection Program Risk Ratings: Pass $ 182,082 $ 8,520 $ — $ — $ — $ — $ — $ 190,602 Total $ 182,082 $ 8,520 $ — $ — $ — $ — $ — $ 190,602 Consolidated Risk Ratings: Pass $ 1,275,272 $ 749,567 $ 777,329 $ 610,043 $ 450,798 $ 1,241,138 $ 629,985 $ 5,734,132 Special Mention 563 22,763 8,088 1,006 2,157 14,491 2,168 51,236 Substandard — 5,186 8,358 27,832 7,336 25,709 258 74,679 Substandard Impaired — 503 10,044 4,656 8,239 18,590 3,805 45,837 Doubtful — — — — — — — — Total $ 1,275,835 $ 778,019 $ 803,819 $ 643,537 $ 468,530 $ 1,299,928 $ 636,216 $ 5,905,884 December 31, 2020 (In thousands) 2020 2019 2018 2017 2016 Prior Revolving Total Construction and Land Development Risk Ratings: Pass $ 62,107 $ 52,384 $ 46,067 $ 15,873 $ 7,335 $ 17,873 $ 35,324 $ 236,963 Special Mention 206 245 5,918 — — 1,449 — 7,818 Substandard — — — — — 51 — 51 Substandard Impaired — — — 37 — 239 — 276 Doubtful — — — — — — — — Total $ 62,313 $ 52,629 $ 51,985 $ 15,910 $ 7,335 $ 19,612 $ 35,324 $ 245,108 Commercial real estate - owner-occupied Risk Ratings: Pass $ 155,953 $ 198,559 $ 156,276 $ 138,341 $ 148,389 $ 287,772 $ 14,255 $ 1,099,545 Special Mention 5,773 1,858 3,305 — 4,471 4,050 2 19,459 Substandard — — — 4,709 1,955 5,508 — 12,172 Substandard Impaired — 3,151 747 1,362 — 4,874 — 10,134 Doubtful — — — — — — — — Total $ 161,726 $ 203,568 $ 160,328 $ 144,412 $ 154,815 $ 302,204 $ 14,257 $ 1,141,310 December 31, 2020 (In thousands) 2020 2019 2018 2017 2016 Prior Revolving Total Commercial real estate - non owner-occupied Risk Ratings: Pass $ 159,299 $ 313,287 $ 201,112 $ 123,357 $ 175,623 $ 356,943 $ 8,596 $ 1,338,217 Special Mention — 431 9,487 7,580 10,240 114 — 27,852 Substandard — — 9,709 — 8,311 3,682 — 21,702 Substandard Impaired — 2,418 — — 125 5,540 — 8,083 Doubtful — — — — — — — — Total $ 159,299 $ 316,136 $ 220,308 $ 130,937 $ 194,299 $ 366,279 $ 8,596 $ 1,395,854 Residential real estate Risk Ratings: Pass $ 96,819 $ 144,329 $ 204,077 $ 205,046 $ 160,612 $ 159,742 $ 350,502 $ 1,321,127 Special Mention — — 33 720 — 966 479 2,198 Substandard 350 — — 896 — 1,452 100 2,798 Substandard Impaired 109 726 1,520 1,762 715 9,671 2,002 16,505 Doubtful — — — — — — — — Total $ 97,278 $ 145,055 $ 205,630 $ 208,424 $ 161,327 $ 171,831 $ 353,083 $ 1,342,628 Commercial and financial Risk Ratings: Pass $ 214,774 $ 146,511 $ 103,769 $ 60,782 $ 39,692 $ 53,758 $ 204,304 $ 823,590 Special Mention 71 946 965 5,612 67 635 209 8,505 Substandard 154 41 3,016 1,609 553 3,239 764 9,376 Substandard Impaired 317 4,595 3,199 2,292 2,074 704 81 13,262 Doubtful 1 — — — — — — 20 20 Total $ 215,316 $ 152,093 $ 110,949 $ 70,295 $ 42,386 $ 58,336 $ 205,378 $ 854,753 Consumer Risk Ratings: Pass $ 46,476 $ 43,143 $ 30,433 $ 18,937 $ 21,880 $ 9,488 $ 15,089 $ 185,446 Special Mention 58 27 14 41 42 21 1,854 2,057 Substandard — — — 42 4 151 228 425 Substandard Impaired 7 50 193 24 329 183 21 807 Doubtful — — — — — — — — Total $ 46,541 $ 43,220 $ 30,640 $ 19,044 $ 22,255 $ 9,843 $ 17,192 $ 188,735 Paycheck Protection Program Risk Ratings: Pass $ 566,961 $ — $ — $ — $ — $ — $ — $ 566,961 Total $ 566,961 $ — $ — $ — $ — $ — $ — $ 566,961 Consolidated Risk Ratings: Pass $ 1,302,389 $ 898,213 $ 741,734 $ 562,336 $ 553,531 $ 885,576 $ 628,070 $ 5,571,849 Special Mention 6,108 3,507 19,722 13,953 14,820 7,235 2,544 67,889 Substandard 504 41 12,725 7,256 10,823 14,083 1,092 46,524 Substandard Impaired 433 10,940 5,659 5,477 3,243 21,211 2,104 49,067 Doubtful 1 — — — — — — 20 20 Total $ 1,309,434 $ 912,701 $ 779,840 $ 589,022 $ 582,417 $ 928,105 $ 633,830 $ 5,735,349 1 Loans classified as doubtful are fully reserved at December 31, 2020.
Schedule of Loans Modified	The following table presents the balance of loans with active payment accommodations at the specified dates, excluding PPP loans: (In thousands) September 30, 2021 December 31, 2020 Construction and land development $ — $ 1,032 Commercial real estate - owner-occupied 582 14,248 Commercial real estate - non owner-occupied — 32,549 Residential real estate 610 12,839 Commercial and financial 624 11,915 Consumer 338 1,479 Totals $ 2,154 $ 74,062
Schedule of Troubled Debt Restructuring	The following table presents loans that were modified in a troubled debt restructuring during the three and nine months ended: Three Months Ended September 30, 2021 2020 (In thousands) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Construction and land development — $ — $ — — $ — $ — Commercial real estate - owner-occupied — — — — — — Commercial real estate - non owner-occupied — — — — — — Residential real estate 1 152 152 — — — Commercial and financial — — — — — — Consumer — — — 1 41 41 Totals 1 $ 152 $ 152 1 $ 41 $ 41 Nine Months Ended September 30, 2021 2020 (In thousands) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Construction and land development — $ — $ — — $ — $ — Commercial real estate - owner-occupied — — — — — — Commercial real estate - non owner-occupied — — — — — — Residential real estate 4 231 231 1 45 45 Commercial and financial 1 142 142 4 437 437 Consumer — — — 3 88 88 Totals 5 $ 373 $ 373 8 $ 570 $ 570

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Schedule of Allowance for Credit Losses	Activity in the allowance for credit losses is summarized as follows: Three Months Ended September 30, 2021 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 4,053 $ — $ (1,459) $ — $ 10 $ (1) $ 2,603 Commercial real estate - owner-occupied 8,676 — (24) — — — 8,652 Commercial real estate - non owner-occupied 34,807 1,327 5,278 (1,327) — — 40,085 Residential real estate 12,543 — 1,456 (27) 158 (3) 14,127 Commercial and financial 18,016 1,719 (2) (535) 326 — 19,524 Consumer 3,032 — (158) (163) 126 (5) 2,832 Paycheck Protection Program — — — — — — — Totals $ 81,127 $ 3,046 $ 5,091 $ (2,052) $ 620 $ (9) $ 87,823 Three Months Ended September 30, 2020 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 7,161 $ 39 $ 475 $ — $ 26 $ — $ 7,701 Commercial real estate - owner occupied 5,562 954 689 — 26 (12) 7,219 Commercial real estate - non-owner occupied 38,992 2,096 (7,050) (25) 5 — 34,018 Residential real estate 20,453 27 (3,196) (19) 65 (5) 17,325 Commercial and financial 15,514 2,632 8,081 (1,776) 203 — 24,654 Consumer 3,568 15 (244) (355) 114 (2) 3,096 Paycheck Protection Program — — — — — — — Totals $ 91,250 $ 5,763 $ (1,245) $ (2,175) $ 439 $ (19) $ 94,013 Nine Months Ended September 30, 2021 (In thousands) Beginning Initial Allowance on PCD Loans Acquired During the Period Provision Charge- Recoveries TDR Ending Construction and land development $ 4,920 $ — $ (2,438) $ — $ 124 $ (3) $ 2,603 Commercial real estate - owner-occupied 9,868 — (1,216) — — — 8,652 Commercial real estate - non owner-occupied 38,266 1,327 1,817 (1,327) 2 — 40,085 Residential real estate 17,500 — (4,323) (48) 1,008 (10) 14,127 Commercial and financial 18,690 1,719 1,172 (2,855) 798 — 19,524 Consumer 3,489 — (491) (547) 388 (7) 2,832 Paycheck Protection Program — — — — — — Totals $ 92,733 $ 3,046 $ (5,479) $ (4,777) $ 2,320 $ (20) $ 87,823 Nine Months Ended September 30, 2020 (In thousands) Beginning Balance Impact of Adoption of ASC 326 Initial Allowance on PCD Loans Acquired During the Period Provision for Credit Losses Charge- Offs Recoveries TDR Allowance Adjustments Ending Balance Construction and land development $ 1,842 $ 1,479 $ 87 $ 4,202 $ — $ 92 $ (1) $ 7,701 Commercial real estate - owner occupied 5,361 80 1,161 655 (45) 44 (37) 7,219 Commercial real estate - non-owner occupied 7,863 9,341 2,236 14,578 (37) 37 — 34,018 Residential real estate 7,667 5,787 124 3,638 (150) 283 (24) 17,325 Commercial and financial 9,716 3,677 2,643 12,144 (4,642) 1,116 — 24,654 Consumer 2,705 862 28 662 (1,442) 284 (3) 3,096 Paycheck Protection Program — — — — — — — — Totals $ 35,154 $ 21,226 $ 6,279 $ 35,879 $ (6,316) $ 1,856 $ (65) $ 94,013
Schedule of Loan Portfolio, Excluding PCI Loans and Related Allowance	The allowance for credit losses is composed of specific allowances for loans individually evaluated and general allowances for loans grouped into loan pools based on similar characteristics, which are collectively evaluated. The Company’s loan portfolio and related allowance at September 30, 2021 and December 31, 2020 is shown in the following tables: September 30, 2021 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ 80 $ 3 $ 227,379 $ 2,600 $ 227,459 $ 2,603 Commercial real estate - owner occupied 5,689 420 1,195,647 8,232 1,201,336 8,652 Commercial real estate - non owner-occupied 5,190 95 1,668,397 39,990 1,673,587 40,085 Residential real estate 18,654 513 1,448,675 13,614 1,467,329 14,127 Commercial and financial 15,478 3,350 967,074 16,174 982,552 19,524 Consumer 746 565 162,273 2,267 163,019 2,832 Paycheck Protection Program — — 190,602 — 190,602 — Totals $ 45,837 $ 4,946 $ 5,860,047 $ 82,877 $ 5,905,884 $ 87,823 December 31, 2020 Individually Evaluated Collectively Evaluated Total (In thousands) Recorded Associated Recorded Associated Recorded Associated Construction and land development $ 276 $ 13 $ 244,832 $ 4,907 $ 245,108 $ 4,920 Commercial real estate - owner occupied 10,243 402 1,131,067 9,466 1,141,310 9,868 Commercial real estate - non owner-occupied 8,083 1,640 1,387,771 36,626 1,395,854 38,266 Residential real estate 16,506 2,064 1,326,122 15,436 1,342,628 17,500 Commercial and financial 13,281 3,498 841,472 15,192 854,753 18,690 Consumer 807 91 187,928 3,398 188,735 3,489 Paycheck Protection Program — — 566,961 — 566,961 — Totals $ 49,196 $ 7,708 $ 5,686,153 $ 85,025 $ 5,735,349 $ 92,733

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	(In thousands) Notional Amount Fair Value Balance Sheet Category At September 30, 2021 Back-to-back swaps $ 180,610 $ 9,110 Other Assets and Other Liabilities Interest rate floors 300,000 514 Other Assets At December 31, 2020 Back-to-back swaps $ 182,379 $ 13,339 Other Assets and Other Liabilities Interest rate floors 300,000 1,004 Other Assets

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	9 Months Ended
	Sep. 30, 2021
Brokers and Dealers [Abstract]
Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged	Company securities pledged were as follows by collateral type and maturity as of: (In thousands) September 30, 2021 December 31, 2020 Fair value of pledged securities - overnight and continuous: Mortgage-backed securities and collateralized mortgage obligations of U.S. government sponsored entities $ 134,801 $ 137,268

Noninterest Income and Expense

Noninterest Income and Expense (Tables)	9 Months Ended
	Sep. 30, 2021
Brokers and Dealers [Abstract]
Schedule of Noninterest Income and Expense	Details of noninterest income and expenses for the three and nine months ended September 30, 2021 and 2020 are as follows: Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2021 2020 2021 2020 Noninterest income Service charges on deposit accounts $ 2,495 $ 2,242 $ 7,171 $ 7,006 Interchange income 4,131 3,682 12,096 10,115 Wealth management income 2,562 1,972 7,272 5,558 Mortgage banking fees 2,550 5,283 9,752 11,050 Marine finance fees 152 242 518 545 SBA gains 812 252 1,331 572 BOLI income 1,128 899 2,859 2,672 Other income 5,228 2,370 11,221 7,869 19,058 16,942 52,220 45,387 Securities (losses) gains, net (30) 4 (199) 1,253 Total $ 19,028 $ 16,946 $ 52,021 $ 46,640 Noninterest expense Salaries and wages $ 27,919 $ 23,125 $ 72,278 $ 67,049 Employee benefits 4,177 3,995 13,110 11,629 Outsourced data processing costs 5,610 6,128 14,754 14,820 Telephone/data lines 810 705 2,433 2,210 Occupancy 3,541 3,858 10,640 10,596 Furniture and equipment 1,567 1,576 3,987 4,557 Marketing 1,353 1,513 3,523 3,788 Legal and professional fees 4,151 3,018 8,915 8,658 FDIC assessments 651 474 1,692 740 Amortization of intangibles 1,306 1,497 3,729 4,436 Foreclosed property expense and net (gain) loss on sale 66 512 (89) 442 Provision for credit losses on unfunded commitments 133 756 133 980 Other 3,984 4,517 12,067 11,966 Total $ 55,268 $ 51,674 $ 147,172 $ 141,871

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Assets Measured on Recurring and Nonrecurring Basis	Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at September 30, 2021 and December 31, 2020 included: (In thousands) Fair Value Quoted Prices Significant Significant At September 30, 2021 Financial Assets Available-for-sale debt securities 1 $ 1,546,155 $ 199 $ 1,545,956 $ — Derivative financial instruments 2 9,624 — 9,624 — Loans held for sale 2 49,597 — 49,597 — Loans 3 9,945 — 942 9,003 Other real estate owned 4 13,628 — 390 13,238 Equity securities 5 9,404 9,404 — — Financial Liabilities Derivative financial instruments 2 $ 9,110 $ — $ 9,110 $ — At December 31, 2020 Financial Assets Available-for-sale debt securities 1 $ 1,398,157 $ 101 $ 1,398,056 $ — Derivative financial instruments 2 14,343 — 14,343 — Loans held for sale 2 68,890 — 68,890 — Loans 3 8,806 — 1,900 6,906 Other real estate owned 4 12,750 — 72 12,678 Equity securities 5 6,530 6,530 — — Financial Liabilities Derivative financial instruments 2 $ 13,339 $ — $ 13,339 $ — 1 See “Note D – Securities” for further detail of fair value of individual investment categories. 2 Recurring fair value basis determined using observable market data. 3 S e e “ Note E – Loans .” N onrecurring fair value adjustments to collateral-dependent loans reflect full or partial write-downs that are based on current appraised values of the collateral in accordance with ASC Topic 310. 4 Fair value is measured on a nonrecurring basis in accordance with ASC Topic 360. 5 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 Aggregate Fair Value and Contractual Balance of Loans for Sale	The aggregate fair value and contractual balance of loans held for sale as of September 30, 2021 and December 31, 2020 is as follows: (In thousands) September 30, 2021 December 31, 2020 Aggregate fair value $ 49,597 $ 68,890 Contractual balance 48,172 66,415 Excess 1,425 2,475
Schedule of Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis	The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of September 30, 2021 and December 31, 2020 is as follows: (In thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2021 Financial Assets Debt securities held-to-maturity 1 $ 526,502 $ — $ 518,464 $ — Time deposits with other banks 750 — 757 — Loans, net 5,808,116 — — 5,810,038 Financial Liabilities Deposit liabilities 8,334,172 — — 8,336,134 Subordinated debt 71,576 — 58,399 — December 31, 2020 Financial Assets Debt securities held-to-maturity 1 $ 184,484 $ — $ 192,179 $ — Time deposits with other banks 750 — 762 — Loans, net 5,633,810 — — 5,686,019 Financial Liabilities Deposit liabilities 6,932,561 — — 6,936,097 Subordinated debt 71,365 — 58,227 — 1 See “Note D – Securities” for further detail of individual investment categories.

Business Combinations (Tables)

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Schedule of Purchase Price Calculation	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 common stock issued 2,687 Multiplied by common stock price per share on August 6, 2021 $ 32.19 Value of common stock issued 86,487 Cash paid for fractional shares 7 Fair value of options converted 4,736 Total purchase price $ 91,230 The Company acquired 100% of the outstanding common stock of Fourth Street. Under the terms of the definitive agreement, each share of Fourth Street common stock was converted into the right to receive 0.1275 share of Seacoast common stock. (In thousands, except per share data) August 21, 2020 Number of Fourth Street common shares outstanding 11,220 Shares issued upon conversion of convertible debt 5,405 Per share exchange ratio 0.1275 Number of shares of common stock issued 2,120 Multiplied by common stock price per share on August 21, 2020 $ 19.40 Value of common stock issued 41,121 Cash paid for Fourth Street vested stock options 596 Total purchase price $ 41,717 The Company acquired 100% of the outstanding common stock of FBPB. Under the terms of the definitive agreement, each share of FBPB common stock was converted into the right to receive 0.2000 share of Seacoast common stock. (In thousands, except per share data) March 13, 2020 Number of FBPB common shares outstanding 5,213 Per share exchange ratio 0.2000 Number of shares of common stock issued 1,043 Multiplied by common stock price per share on March 13, 2020 $ 20.17 Value of common stock issued 21,031 Cash paid for FBPB vested stock options 866 Total purchase price $ 21,897
Schedule of Business Acquisitions	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) Initially 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 (In thousands) August 21, 2020 Assets: Cash $ 38,082 Investment securities 3,498 Loans 303,434 Bank premises and equipment 9,480 Core deposit intangibles 1,310 Goodwill 9,030 Other assets 7,088 Total assets $ 371,922 Liabilities: Deposits $ 329,662 Other liabilities 543 Total liabilities $ 330,205 (In thousands) Initially Measured Measurement Period Adjustments As Adjusted March 13, 2020 Assets: Cash $ 34,749 $ — $ 34,749 Investment securities 447 — 447 Loans 146,839 (62) 146,777 Bank premises and equipment 6,086 — 6,086 Core deposit intangibles 819 — 819 Goodwill 6,799 62 6,861 Other assets 1,285 20 1,305 Total assets $ 197,024 $ 20 $ 197,044 Liabilities: Deposits $ 173,741 $ — $ 173,741 Other liabilities 1,386 20 1,406 Total liabilities $ 175,127 $ 20 $ 175,147
Schedule of Fair Value of Acquired Loans, Unpaid Principal Balance, Purchase Price and Allowance for Credit Losses	The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. 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 information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. August 21, 2020 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 9,197 $ 8,851 Commercial real estate - owner-occupied 77,936 75,215 Commercial real estate - non owner-occupied 76,014 71,171 Residential real estate 23,548 23,227 Commercial and financial 72,745 68,096 Consumer 2,748 2,694 PPP loans 55,005 54,180 Total acquired loans $ 317,193 $ 303,434 The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date. March 13, 2020 (In thousands) Book Balance Fair Value Loans: Construction and land development $ 9,493 $ 9,012 Commercial real estate - owner-occupied 46,221 45,171 Commercial real estate - non owner-occupied 36,268 35,079 Residential real estate 47,569 47,043 Commercial and financial 9,659 9,388 Consumer 1,132 1,084 Total acquired loans $ 150,342 $ 146,777 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) March 13, 2020 Book balance of loans at acquisition $ 43,682 Allowance for credit losses at acquisition (516) Non-credit related discount (128) Total PCD loans acquired $ 43,038
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) 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 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 21, 2020 Book balance of loans at acquisition $ 59,455 Allowance for credit losses at acquisition (5,763) Non-credit related discount (4,319) Total PCD loans acquired $ 49,373
Schedule of Pro-Forma Data	Pro-forma data for the three and nine months ended September 30, 2021 presents information as if the acquisition of Legacy Bank occurred at the beginning of 2020, as follows: Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except per share amounts) 2021 2020 2021 2020 Net interest income $ 73,309 $ 68,164 $ 216,682 $ 207,388 Net income 43,401 24,098 104,521 39,930 EPS - basic $ 0.75 $ 0.42 $ 1.81 $ 0.72 EPS - diluted 0.74 0.44 1.79 0.71

Earnings per Share - Narrative

Earnings per Share - Narrative (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Antidilutive securities excluded from diluted earnings per share calculation (in shares)	0	508	0	508

Earnings per Share - Schedule o

Earnings per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Basic earnings per share
Net income	$ 22,944	$ 22,628	$ 88,073	$ 48,417
Average common shares outstanding (in shares)	57,148	53,978	55,954	52,926
Net income per share (in dollars per share)	$ 0.40	$ 0.42	$ 1.57	$ 0.91
Diluted earnings per share
Average common shares outstanding (in shares)	57,148	53,978	55,954	52,926
Add: Dilutive effect of employee restricted stock and stock options (in shares)	497	323	487	399
Average diluted shares outstanding (in shares)	57,645	54,301	56,441	53,325
Net income per share (in dollars per share)	$ 0.40	$ 0.42	$ 1.56	$ 0.91

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities Available for Sale and Held for Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt securities available-for-sale
Available for sale, amortized cost, total	$ 1,539,560	$ 1,371,539
Available for sale, gross unrealized gains	16,445	28,716
Available for sale, gross unrealized losses	(9,850)	(2,098)
Available for sale, fair value	1,546,155	1,398,157
Debt securities held-to-maturity
Held to maturity, amortized cost, total	526,502	184,484
Held to maturity, gross unrealized gains	4,702	7,818
Held to maturity, gross unrealized losses	(12,740)	(123)
Held to maturity, fair value	518,464	192,179
U.S. Treasury securities and obligations of U.S. government agencies
Debt securities available-for-sale
Available for sale, amortized cost, total	6,785	8,250
Available for sale, gross unrealized gains	371	528
Available for sale, gross unrealized losses	(2)	(1)
Available for sale, fair value	7,154	8,777
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Debt securities available-for-sale
Available for sale, amortized cost, total	1,147,743	1,038,437
Available for sale, gross unrealized gains	12,378	23,457
Available for sale, gross unrealized losses	(9,450)	(1,240)
Available for sale, fair value	1,150,671	1,060,654
Debt securities held-to-maturity
Held to maturity, amortized cost, total		184,484
Held to maturity, gross unrealized gains		7,818
Held to maturity, gross unrealized losses		(123)
Held to maturity, fair value	518,464	192,179
Private mortgage-backed securities and collateralized mortgage obligations
Debt securities available-for-sale
Available for sale, amortized cost, total	75,754	89,284
Available for sale, gross unrealized gains	1,710	2,131
Available for sale, gross unrealized losses	(236)	(210)
Available for sale, fair value	77,228	91,205
Debt securities held-to-maturity
Held to maturity, fair value	0
Collateralized loan obligations
Debt securities available-for-sale
Available for sale, amortized cost, total	277,262	202,563
Available for sale, gross unrealized gains	149	279
Available for sale, gross unrealized losses	(105)	(647)
Available for sale, fair value	277,306	202,195
Debt securities held-to-maturity
Held to maturity, fair value	0
Obligations of state and political subdivisions
Debt securities available-for-sale
Available for sale, amortized cost, total	32,016	33,005
Available for sale, gross unrealized gains	1,837	2,321
Available for sale, gross unrealized losses	(57)	0
Available for sale, fair value	33,796	$ 35,326
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Debt securities held-to-maturity
Held to maturity, amortized cost, total	526,502
Held to maturity, gross unrealized gains	4,702
Held to maturity, gross unrealized losses	(12,740)
Held to maturity, fair value	$ 518,464

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of debt securities available-for-sale	$ 1,000		$ 4,400	$ 57,209	$ 96,733
Gross gains from sale of securities	0		4	200	2,400
Gross losses from sale of securities	0		0	300	1,300
Gain (loss) on investment in shares of mutual funds	(30)		4	(199)	1,253
Securities transferred from available for sale to held to maturity		$ 210,800
Securities transferred from available for sale to held to maturity, unrealized gains		$ 800
Unrealized losses on mortgage backed securities of government sponsored entities	9,850			9,850		$ 2,098
Fair value of securities in unrealized loss position	770,488			770,488		405,437
Held-to-maturity securities, allowance for credit loss	0			0
Federal Home Loan Bank and Federal Reserve stock recorded in other assets	31,500			31,500
Accrued interest receivable on AFS debt securities	3,700			3,700		3,200
Accrued interest receivable on HTM debt securities	$ 800			$ 800		400
Common Class B | Visa
Debt Securities, Available-for-sale [Line Items]
Shares of Visa stock held (in shares)	11,330			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)	1.6228			1.6228
Shares issued (in shares)				18,386
CRA - Qualified Mutual Fund
Debt Securities, Available-for-sale [Line Items]
Gain (loss) on investment in shares of mutual funds	$ (30)		$ 100	$ (100)	$ 200
Investment in mutual fund carried at fair value	9,400			9,400
Public Deposits and Secured Borrowings | Carrying Value
Debt Securities, Available-for-sale [Line Items]
Fair value of debt securities pledged as collateral	385,500			385,500
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	9,450			9,450		1,240
Fair value of securities in unrealized loss position	675,378			675,378		203,974
Allowance for credit losses on AFS debt securities	0			0
Private mortgage-backed securities and collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	236			236		210
Fair value of securities in unrealized loss position	15,728			15,728		23,997
Allowance for credit losses on AFS debt securities	$ 0			$ 0
Average credit support percentage	35.00%			35.00%
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Unrealized losses on mortgage backed securities of government sponsored entities	$ 105			$ 105		647
Fair value of securities in unrealized loss position	73,691			73,691		$ 177,210
Allowance for credit losses on AFS debt securities	$ 0			$ 0
Collateralized loan obligations | Standard & Poor's, AAA Rating
Debt Securities, Available-for-sale [Line Items]
Number of positions held, percentage of total	37.00%			37.00%
Collateralized loan obligations | Standard & Poor's, AA Rating
Debt Securities, Available-for-sale [Line Items]
Number of positions held, percentage of total	24.00%			24.00%

Securities - Amortized Cost a_2

Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortized Cost
Held to maturity, amortized cost, total	$ 526,502	$ 184,484
Fair Value
Held to maturity, fair value, total	518,464	192,179
Amortized Cost
Available for sale, amortized cost, total	1,539,560	1,371,539
Fair Value
Available for sale, fair value, total	1,546,155	1,398,157
Other debt
Amortized Cost
Held to maturity, amortized cost, due in less than one year	0
Held to maturity, amortized cost, due after one year through five years	0
Held to maturity, amortized cost, due after five years through ten years	0
Held to maturity, amortized cost, due after ten years	0
Held to maturity, amortized cost, total	0
Fair Value
Held to maturity, fair value, due in less than one year	0
Held to maturity, fair value, due after one year through five years	0
Held to maturity, fair value, due after five years through ten years	0
Held to maturity, fair value, due after ten years	0
Held to maturity, fair value, total	0
Amortized Cost
Available for sale, amortized cost, due in less than one year	1,418
Available for sale, amortized cost, due after one year through five years	13,892
Available for sale, amortized cost, due after five years through ten years	8,376
Available for sale, amortized cost, due after ten years	15,115
Available for sale, amortized cost, total	38,801
Fair Value
Available for sale, fair value, due in less than one year	1,442
Available for sale, fair value, due after one year through five years	14,828
Available for sale, fair value, due after five years through ten years	8,764
Available for sale, fair value, due after ten years	15,916
Available for sale, fair value, total	40,950
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Amortized Cost
Held to maturity, amortized cost, total	526,502
Fair Value
Held to maturity, fair value, total	518,464	192,179
Amortized Cost
Available for sale, amortized cost, total	1,147,743	1,038,437
Fair Value
Available for sale, fair value, total	1,150,671	1,060,654
Private mortgage-backed securities and collateralized mortgage obligations
Amortized Cost
Held to maturity, amortized cost, total	0
Fair Value
Held to maturity, fair value, total	0
Amortized Cost
Available for sale, amortized cost, total	75,754	89,284
Fair Value
Available for sale, fair value, total	77,228	91,205
Collateralized loan obligations
Amortized Cost
Held to maturity, amortized cost, total	0
Fair Value
Held to maturity, fair value, total	0
Amortized Cost
Available for sale, amortized cost, total	277,262	202,563
Fair Value
Available for sale, fair value, total	$ 277,306	$ 202,195

Securities - Schedule of Unreal

Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value
Less Than 12 Months	$ 742,721	$ 332,099
12 Months or Longer	27,767	73,338
Total	770,488	405,437
Unrealized Losses
Less Than 12 Months	(9,017)	(1,530)
12 Months or Longer	(833)	(568)
Total	(9,850)	(2,098)
U.S. Treasury securities and obligations of U.S. government agencies
Fair Value
Less Than 12 Months	0	0
12 Months or Longer	248	256
Total	248	256
Unrealized Losses
Less Than 12 Months	0	0
12 Months or Longer	(2)	(1)
Total	(2)	(1)
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	660,028	203,405
12 Months or Longer	15,350	569
Total	675,378	203,974
Unrealized Losses
Less Than 12 Months	(8,696)	(1,218)
12 Months or Longer	(754)	(22)
Total	(9,450)	(1,240)
Private mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	13,018	23,997
12 Months or Longer	2,710	0
Total	15,728	23,997
Unrealized Losses
Less Than 12 Months	(206)	(210)
12 Months or Longer	(30)	0
Total	(236)	(210)
Collateralized loan obligations
Fair Value
Less Than 12 Months	64,232	104,697
12 Months or Longer	9,459	72,513
Total	73,691	177,210
Unrealized Losses
Less Than 12 Months	(58)	(102)
12 Months or Longer	(47)	(545)
Total	(105)	$ (647)
Obligations of state and political subdivisions
Fair Value
Less Than 12 Months	5,443
12 Months or Longer	0
Total	5,443
Unrealized Losses
Less Than 12 Months	(57)
12 Months or Longer	0
Total	$ (57)

Loans - Schedule of Portfolio L

Loans - Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 5,905,884	$ 5,735,349
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	227,459	245,108
Commercial real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,201,336	1,141,310
Commercial real estate - non owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,673,587	1,395,854
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,467,329	1,342,628
Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	982,552	854,753
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	163,019	188,735
Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	190,602	566,961
Acquired Non-PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,004,128	925,434
Acquired Non-PCD Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	37,067	26,250
Acquired Non-PCD Loans | Commercial real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	218,128	247,090
Acquired Non-PCD Loans | Commercial real estate - non owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	428,095	323,273
Acquired Non-PCD Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	181,344	176,105
Acquired Non-PCD Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	97,642	94,627
Acquired Non-PCD Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,092	6,660
Acquired Non-PCD Loans | Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	36,760	51,429
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	139,113	98,178
PCD Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	48	2,438
PCD Loans | Commercial real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	32,089	39,451
PCD Loans | Commercial real estate - non owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	79,272	29,122
PCD Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,847	10,609
PCD Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	19,846	16,280
PCD Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	11	278
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	4,762,643	4,711,737
Portfolio Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	190,344	216,420
Portfolio Loans | Commercial real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	951,119	854,769
Portfolio Loans | Commercial real estate - non owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,166,220	1,043,459
Portfolio Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,278,138	1,155,914
Portfolio Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	865,064	743,846
Portfolio Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	157,916	181,797
Portfolio Loans | Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 153,842	$ 515,532

Loans - Narrative (Details)

Loans - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)contract	Sep. 30, 2020USD ($)contract	Dec. 31, 2020USD ($)	Jun. 30, 2020USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Net deferred costs	$ 32,100		$ 32,100		$ 22,600
Accrued interest receivable	15,200		15,200		25,800
Interest income from securities with no related allowance	300	$ 100	900	$ 500
Value of loans deferred, not classified as TDRs	$ 2,154		$ 2,154		74,062
Percentage on payment deferral	0.04%		0.04%
Allowance for credit loss on TDRs	$ 200	200	$ 200	$ 200
Number of loans under trouble debt restructuring | contract			2	4
Amount of loans in default			$ 100	$ 1,400
Interest income related to impaired loans with impairment measured on present value of expected future cash flows	$ 9	$ 19	20	$ 65
Maximum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Value of loans deferred, not classified as TDRs						$ 1,100,000
Percentage on payment deferral						21.00%
Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Remaining fair value adjustment for loans acquired			$ 26,600		$ 30,200
Percentage of fair value adjustment for loans acquired	2.30%		2.30%		2.90%
Portfolio Loans | Paycheck Protection Program
Financing Receivable, Troubled Debt Restructuring [Line Items]
Net deferred fees	$ 5,400		$ 5,400		$ 9,500

Loans - Past Due Financing Rece

Loans - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans	$ 5,905,884	$ 5,735,349
Nonaccrual	32,612	36,110
Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	1,004,128	925,434
Nonaccrual	4,412	7,690
PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	139,113	98,178
Nonaccrual	9,018	10,150
Current
Financing Receivable, Past Due [Line Items]
Loans	5,866,282	5,689,158
Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	998,375	915,799
Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	129,245	87,903
Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	4,233	6,382
Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	649	1,841
Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	767	125
Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	943	3,636
Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	692	104
Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	83	0
Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	1,814	63
Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	227,459	245,108
Nonaccrual	40	167
Construction and land development | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	37,067	26,250
Nonaccrual	0	0
Construction and land development | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	48	2,438
Nonaccrual	6	9
Construction and land development | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	37,067	26,250
Construction and land development | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	42	2,429
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	1,201,336	1,141,310
Nonaccrual	4,516	8,181
Commercial real estate - owner-occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	218,128	247,090
Nonaccrual	0	2,604
Commercial real estate - owner-occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	32,089	39,451
Nonaccrual	3,350	3,106
Commercial real estate - owner-occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	217,436	244,486
Commercial real estate - owner-occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	28,739	36,345
Commercial real estate - owner-occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner-occupied | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner-occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	692	0
Commercial real estate - owner-occupied | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner-occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - owner-occupied | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate - non owner-occupied
Financing Receivable, Past Due [Line Items]
Loans	1,673,587	1,395,854
Nonaccrual	5,191	8,084
Commercial real estate - non owner-occupied | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	428,095	323,273
Nonaccrual	925	1,009
Commercial real estate - non owner-occupied | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	79,272	29,122
Nonaccrual	2,504	4,922
Commercial real estate - non owner-occupied | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	427,170	322,264
Commercial real estate - non owner-occupied | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	76,768	24,200
Commercial real estate - non owner-occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	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	1,467,329	1,342,628
Nonaccrual	15,038	12,492
Residential real estate | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	181,344	176,105
Nonaccrual	2,540	2,889
Residential real estate | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	7,847	10,609
Nonaccrual	1,816	1,072
Residential real estate | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	178,504	171,507
Residential real estate | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	6,007	9,537
Residential real estate | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	300	1,605
Residential real estate | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	24	0
Residential real estate | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	104
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	982,552	854,753
Nonaccrual	7,244	6,604
Commercial and financial | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	97,642	94,627
Nonaccrual	509	1,188
Commercial and financial | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	19,846	16,280
Nonaccrual	1,342	1,034
Commercial and financial | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	96,799	93,223
Commercial and financial | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	17,678	15,121
Commercial and financial | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	334	216
Commercial and financial | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	743	125
Commercial and financial | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial and financial | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	83	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	163,019	188,735
Nonaccrual	583	582
Consumer | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	5,092	6,660
Nonaccrual	438	0
Consumer | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	11	278
Nonaccrual		7
Consumer | Current | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	4,639	6,640
Consumer | Current | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	11	271
Consumer | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	15	20
Consumer | Accruing 30-59 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer | Accruing 60-89 Days Past Due | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans		0
Consumer | Accruing Greater Than 90 Days | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer | Accruing Greater Than 90 Days | PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Paycheck Protection Program
Financing Receivable, Past Due [Line Items]
Loans	190,602	566,961
Paycheck Protection Program | Acquired Non-PCD Loans
Financing Receivable, Past Due [Line Items]
Loans	36,760	51,429
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	36,760	51,429
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	0
Portfolio Loans
Financing Receivable, Past Due [Line Items]
Loans	4,762,643	4,711,737
Nonaccrual	19,182	18,270
Portfolio Loans | Current
Financing Receivable, Past Due [Line Items]
Loans	4,738,662	4,685,456
Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,817	4,416
Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	168	3,532
Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	1,814	63
Portfolio Loans | Construction and land development
Financing Receivable, Past Due [Line Items]
Loans	190,344	216,420
Nonaccrual	34	158
Portfolio Loans | Construction and land development | Current
Financing Receivable, Past Due [Line Items]
Loans	190,310	216,262
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	951,119	854,769
Nonaccrual	1,166	2,471
Portfolio Loans | Commercial real estate - owner-occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	949,282	851,222
Portfolio Loans | Commercial real estate - owner-occupied | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	671	1,076
Portfolio Loans | Commercial real estate - owner-occupied | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial real estate - owner-occupied | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Portfolio Loans | Commercial real estate - non owner-occupied
Financing Receivable, Past Due [Line Items]
Loans	1,166,220	1,043,459
Nonaccrual	1,762	2,153
Portfolio Loans | Commercial real estate - non owner-occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	1,164,458	1,041,306
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	1,278,138	1,155,914
Nonaccrual	10,682	8,531
Portfolio Loans | Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	1,267,081	1,142,893
Portfolio Loans | Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	340	3,002
Portfolio Loans | Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	35	1,427
Portfolio Loans | Residential real estate | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	61
Portfolio Loans | Commercial and financial
Financing Receivable, Past Due [Line Items]
Loans	865,064	743,846
Nonaccrual	5,393	4,382
Portfolio Loans | Commercial and financial | Current
Financing Receivable, Past Due [Line Items]
Loans	856,579	737,362
Portfolio Loans | Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,179	135
Portfolio Loans | Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	99	1,967
Portfolio Loans | Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	1,814	0
Portfolio Loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans	157,916	181,797
Nonaccrual	145	575
Portfolio Loans | Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	157,468	180,879
Portfolio Loans | Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	269	203
Portfolio Loans | Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	34	138
Portfolio Loans | Consumer | Accruing Greater Than 90 Days
Financing Receivable, Past Due [Line Items]
Loans	0	2
Portfolio Loans | Paycheck Protection Program
Financing Receivable, Past Due [Line Items]
Loans	153,842	515,532
Nonaccrual	0	0
Portfolio Loans | Paycheck Protection Program | Current
Financing Receivable, Past Due [Line Items]
Loans	153,484	515,532
Portfolio Loans | Paycheck Protection Program | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	358	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	$ 0	$ 0

Loans - Schedule of Nonaccrual

Loans - Schedule of Nonaccrual Loans by Loan Category (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	$ 25,090	$ 26,624
Nonaccrual Loans With an Allowance	7,522	9,486
Total Nonaccrual Loans	32,612	36,110
Allowance for Credit Losses	4,082	5,832
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	40	148
Nonaccrual Loans With an Allowance	0	19
Total Nonaccrual Loans	40	167
Allowance for Credit Losses	0	8
Commercial real estate - owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	3,490	7,893
Nonaccrual Loans With an Allowance	1,026	288
Total Nonaccrual Loans	4,516	8,181
Allowance for Credit Losses	417	287
Commercial real estate - non owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	3,739	5,666
Nonaccrual Loans With an Allowance	1,452	2,418
Total Nonaccrual Loans	5,191	8,084
Allowance for Credit Losses	95	1,640
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	14,345	9,520
Nonaccrual Loans With an Allowance	693	2,972
Total Nonaccrual Loans	15,038	12,492
Allowance for Credit Losses	362	1,587
Commercial and financial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	3,443	3,175
Nonaccrual Loans With an Allowance	3,801	3,429
Total Nonaccrual Loans	7,244	6,604
Allowance for Credit Losses	2,658	2,235
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans With No Related Allowance	33	222
Nonaccrual Loans With an Allowance	550	360
Total Nonaccrual Loans	583	582
Allowance for Credit Losses	$ 550	$ 75

Loans - Schedule of Collateral

Loans - Schedule of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	$ 35,297	$ 47,902
Construction and land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	31	189
Commercial real estate - owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	5,152	11,992
Commercial real estate - non owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	5,190	7,285
Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	15,039	16,652
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	9,302	11,198
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans	$ 583	$ 586

Loans - Risk Categories of Loan

Loans - Risk Categories of Loans by Class of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 1,275,835	$ 1,309,434
One year prior to current fiscal year	778,019	912,701
Two years prior to current fiscal year	803,819	779,840
Three years prior to current fiscal year	643,537	589,022
Four years prior to current fiscal year	468,530	582,417
Prior	1,299,928	928,105
Revolving	636,216	633,830
Total	5,905,884	5,735,349
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	1,275,272	1,302,389
One year prior to current fiscal year	749,567	898,213
Two years prior to current fiscal year	777,329	741,734
Three years prior to current fiscal year	610,043	562,336
Four years prior to current fiscal year	450,798	553,531
Prior	1,241,138	885,576
Revolving	629,985	628,070
Total	5,734,132	5,571,849
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	563	6,108
One year prior to current fiscal year	22,763	3,507
Two years prior to current fiscal year	8,088	19,722
Three years prior to current fiscal year	1,006	13,953
Four years prior to current fiscal year	2,157	14,820
Prior	14,491	7,235
Revolving	2,168	2,544
Total	51,236	67,889
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	504
One year prior to current fiscal year	5,186	41
Two years prior to current fiscal year	8,358	12,725
Three years prior to current fiscal year	27,832	7,256
Four years prior to current fiscal year	7,336	10,823
Prior	25,709	14,083
Revolving	258	1,092
Total	74,679	46,524
Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	433
One year prior to current fiscal year	503	10,940
Two years prior to current fiscal year	10,044	5,659
Three years prior to current fiscal year	4,656	5,477
Four years prior to current fiscal year	8,239	3,243
Prior	18,590	21,211
Revolving	3,805	2,104
Total	45,837	49,067
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	20
Total	0	20
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	62,879	62,313
One year prior to current fiscal year	38,326	52,629
Two years prior to current fiscal year	38,517	51,985
Three years prior to current fiscal year	26,344	15,910
Four years prior to current fiscal year	4,771	7,335
Prior	21,032	19,612
Revolving	35,590	35,324
Total	227,459	245,108
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	62,879	62,107
One year prior to current fiscal year	38,326	52,384
Two years prior to current fiscal year	38,517	46,067
Three years prior to current fiscal year	26,344	15,873
Four years prior to current fiscal year	4,771	7,335
Prior	20,952	17,873
Revolving	35,590	35,324
Total	227,379	236,963
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	206
One year prior to current fiscal year	0	245
Two years prior to current fiscal year	0	5,918
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	1,449
Revolving	0	0
Total	0	7,818
Construction and land development | 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	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	51
Revolving	0	0
Total	0	51
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	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	37
Four years prior to current fiscal year	0	0
Prior	80	239
Revolving	0	0
Total	80	276
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	155,499	161,726
One year prior to current fiscal year	166,340	203,568
Two years prior to current fiscal year	194,669	160,328
Three years prior to current fiscal year	143,015	144,412
Four years prior to current fiscal year	137,640	154,815
Prior	395,222	302,204
Revolving	8,951	14,257
Total	1,201,336	1,141,310
Commercial real estate - owner-occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	155,499	155,953
One year prior to current fiscal year	159,752	198,559
Two years prior to current fiscal year	186,442	156,276
Three years prior to current fiscal year	142,027	138,341
Four years prior to current fiscal year	132,413	148,389
Prior	385,244	287,772
Revolving	8,951	14,255
Total	1,170,328	1,099,545
Commercial real estate - owner-occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	5,773
One year prior to current fiscal year	6,588	1,858
Two years prior to current fiscal year	5,416	3,305
Three years prior to current fiscal year	655	0
Four years prior to current fiscal year	220	4,471
Prior	5,690	4,050
Revolving	0	2
Total	18,569	19,459
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	0	0
Three years prior to current fiscal year	77	4,709
Four years prior to current fiscal year	3,903	1,955
Prior	2,770	5,508
Revolving	0	0
Total	6,750	12,172
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	3,151
Two years prior to current fiscal year	2,811	747
Three years prior to current fiscal year	256	1,362
Four years prior to current fiscal year	1,104	0
Prior	1,518	4,874
Revolving	0	0
Total	5,689	10,134
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	248,842	159,299
One year prior to current fiscal year	206,738	316,136
Two years prior to current fiscal year	311,174	220,308
Three years prior to current fiscal year	226,478	130,937
Four years prior to current fiscal year	127,378	194,299
Prior	545,774	366,279
Revolving	7,203	8,596
Total	1,673,587	1,395,854
Commercial real estate - non owner-occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	248,842	159,299
One year prior to current fiscal year	201,940	313,287
Two years prior to current fiscal year	303,903	201,112
Three years prior to current fiscal year	202,400	123,357
Four years prior to current fiscal year	123,851	175,623
Prior	513,792	356,943
Revolving	7,203	8,596
Total	1,601,931	1,338,217
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	0	431
Two years prior to current fiscal year	2,363	9,487
Three years prior to current fiscal year	0	7,580
Four years prior to current fiscal year	1,620	10,240
Prior	8,397	114
Revolving	0	0
Total	12,380	27,852
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	4,798	0
Two years prior to current fiscal year	3,856	9,709
Three years prior to current fiscal year	24,078	0
Four years prior to current fiscal year	1,907	8,311
Prior	19,446	3,682
Revolving	0	0
Total	54,085	21,702
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	2,418
Two years prior to current fiscal year	1,052	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	125
Prior	4,139	5,540
Revolving	0	0
Total	5,191	8,083
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	364,563	97,278
One year prior to current fiscal year	119,527	145,055
Two years prior to current fiscal year	111,288	205,630
Three years prior to current fiscal year	136,131	208,424
Four years prior to current fiscal year	137,509	161,327
Prior	252,705	171,831
Revolving	345,606	353,083
Total	1,467,329	1,342,628
Residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	364,563	96,819
One year prior to current fiscal year	119,039	144,329
Two years prior to current fiscal year	110,560	204,077
Three years prior to current fiscal year	136,044	205,046
Four years prior to current fiscal year	132,151	160,612
Prior	243,005	159,742
Revolving	342,581	350,502
Total	1,447,943	1,321,127
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	0	33
Three years prior to current fiscal year	47	720
Four years prior to current fiscal year	0	0
Prior	205	966
Revolving	285	479
Total	537	2,198
Residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	350
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	896
Four years prior to current fiscal year	0	0
Prior	160	1,452
Revolving	35	100
Total	195	2,798
Residential real estate | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	109
One year prior to current fiscal year	488	726
Two years prior to current fiscal year	728	1,520
Three years prior to current fiscal year	40	1,762
Four years prior to current fiscal year	5,358	715
Prior	9,335	9,671
Revolving	2,705	2,002
Total	18,654	16,505
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	229,731	215,316
One year prior to current fiscal year	203,588	152,093
Two years prior to current fiscal year	117,858	110,949
Three years prior to current fiscal year	91,515	70,295
Four years prior to current fiscal year	49,026	42,386
Prior	66,919	58,336
Revolving	223,915	205,378
Total	982,552	854,753
Commercial and financial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	229,168	214,774
One year prior to current fiscal year	187,063	146,511
Two years prior to current fiscal year	107,743	103,769
Three years prior to current fiscal year	83,267	60,782
Four years prior to current fiscal year	45,562	39,692
Prior	60,048	53,758
Revolving	222,822	204,304
Total	935,673	823,590
Commercial and financial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	563	71
One year prior to current fiscal year	16,137	946
Two years prior to current fiscal year	219	965
Three years prior to current fiscal year	247	5,612
Four years prior to current fiscal year	275	67
Prior	149	635
Revolving	406	209
Total	17,996	8,505
Commercial and financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	154
One year prior to current fiscal year	388	41
Two years prior to current fiscal year	4,502	3,016
Three years prior to current fiscal year	3,666	1,609
Four years prior to current fiscal year	1,491	553
Prior	3,333	3,239
Revolving	25	764
Total	13,405	9,376
Commercial and financial | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	317
One year prior to current fiscal year	0	4,595
Two years prior to current fiscal year	5,394	3,199
Three years prior to current fiscal year	4,335	2,292
Four years prior to current fiscal year	1,698	2,074
Prior	3,389	704
Revolving	662	81
Total	15,478	13,262
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	20
Total	0	20
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	32,239	46,541
One year prior to current fiscal year	34,980	43,220
Two years prior to current fiscal year	30,313	30,640
Three years prior to current fiscal year	20,054	19,044
Four years prior to current fiscal year	12,206	22,255
Prior	18,276	9,843
Revolving	14,951	17,192
Total	163,019	188,735
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	32,239	46,476
One year prior to current fiscal year	34,927	43,143
Two years prior to current fiscal year	30,164	30,433
Three years prior to current fiscal year	19,961	18,937
Four years prior to current fiscal year	12,050	21,880
Prior	18,097	9,488
Revolving	12,838	15,089
Total	160,276	185,446
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	58
One year prior to current fiscal year	38	27
Two years prior to current fiscal year	90	14
Three years prior to current fiscal year	57	41
Four years prior to current fiscal year	42	42
Prior	50	21
Revolving	1,477	1,854
Total	1,754	2,057
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	0	0
Three years prior to current fiscal year	11	42
Four years prior to current fiscal year	35	4
Prior	0	151
Revolving	198	228
Total	244	425
Consumer | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	7
One year prior to current fiscal year	15	50
Two years prior to current fiscal year	59	193
Three years prior to current fiscal year	25	24
Four years prior to current fiscal year	79	329
Prior	129	183
Revolving	438	21
Total	745	807
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	182,082	566,961
One year prior to current fiscal year	8,520	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	190,602	566,961
Paycheck Protection Program | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	182,082	566,961
One year prior to current fiscal year	8,520	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	$ 190,602	$ 566,961

Loans - Schedule of Loans in De

Loans - Schedule of Loans in Deferral (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	$ 2,154	$ 74,062
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	0	1,032
Commercial real estate - owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	582	14,248
Commercial real estate - non owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	0	32,549
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	610	12,839
Commercial and financial
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	624	11,915
Consumer
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	$ 338	$ 1,479

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)contract	Sep. 30, 2020USD ($)contract	Sep. 30, 2021USD ($)contract	Sep. 30, 2020USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1	1	5	8
Pre-Modification Outstanding Recorded Investment	$ 152	$ 41	$ 373	$ 570
Post-Modification Outstanding Recorded Investment	$ 152	$ 41	$ 373	$ 570
Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Commercial real estate - owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Commercial real estate - non owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1	0	4	1
Pre-Modification Outstanding Recorded Investment	$ 152	$ 0	$ 231	$ 45
Post-Modification Outstanding Recorded Investment	$ 152	$ 0	$ 231	$ 45
Commercial and financial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	1	4
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 142	$ 437
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 142	$ 437
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	1	0	3
Pre-Modification Outstanding Recorded Investment	$ 0	$ 41	$ 0	$ 88
Post-Modification Outstanding Recorded Investment	$ 0	$ 41	$ 0	$ 88

Allowance for Credit Losses - A

Allowance for Credit Losses - Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 81,127	$ 91,250	$ 92,733	$ 35,154
Initial Allowance on PCD Loans Acquired During the Period	3,046	5,763	3,046	6,279
Provision for Credit Losses	5,091	(1,245)	(5,479)	35,879
Charge- Offs	(2,052)	(2,175)	(4,777)	(6,316)
Recoveries	620	439	2,320	1,856
TDR Allowance Adjustments	(9)	(19)	(20)	(65)
Ending Balance	87,823	94,013	87,823	94,013
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	4,053	7,161	4,920	1,842
Initial Allowance on PCD Loans Acquired During the Period	0	39	0	87
Provision for Credit Losses	(1,459)	475	(2,438)	4,202
Charge- Offs	0	0	0	0
Recoveries	10	26	124	92
TDR Allowance Adjustments	(1)	0	(3)	(1)
Ending Balance	2,603	7,701	2,603	7,701
Commercial real estate - owner-occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	8,676	5,562	9,868	5,361
Initial Allowance on PCD Loans Acquired During the Period	0	954	0	1,161
Provision for Credit Losses	(24)	689	(1,216)	655
Charge- Offs	0	0	0	(45)
Recoveries	0	26	0	44
TDR Allowance Adjustments	0	(12)	0	(37)
Ending Balance	8,652	7,219	8,652	7,219
Commercial real estate - non owner-occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	34,807	38,992	38,266	7,863
Initial Allowance on PCD Loans Acquired During the Period	1,327	2,096	1,327	2,236
Provision for Credit Losses	5,278	(7,050)	1,817	14,578
Charge- Offs	(1,327)	(25)	(1,327)	(37)
Recoveries	0	5	2	37
TDR Allowance Adjustments	0	0	0	0
Ending Balance	40,085	34,018	40,085	34,018
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	12,543	20,453	17,500	7,667
Initial Allowance on PCD Loans Acquired During the Period	0	27	0	124
Provision for Credit Losses	1,456	(3,196)	(4,323)	3,638
Charge- Offs	(27)	(19)	(48)	(150)
Recoveries	158	65	1,008	283
TDR Allowance Adjustments	(3)	(5)	(10)	(24)
Ending Balance	14,127	17,325	14,127	17,325
Commercial and financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	18,016	15,514	18,690	9,716
Initial Allowance on PCD Loans Acquired During the Period	1,719	2,632	1,719	2,643
Provision for Credit Losses	(2)	8,081	1,172	12,144
Charge- Offs	(535)	(1,776)	(2,855)	(4,642)
Recoveries	326	203	798	1,116
TDR Allowance Adjustments	0	0	0	0
Ending Balance	19,524	24,654	19,524	24,654
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,032	3,568	3,489	2,705
Initial Allowance on PCD Loans Acquired During the Period	0	15	0	28
Provision for Credit Losses	(158)	(244)	(491)	662
Charge- Offs	(163)	(355)	(547)	(1,442)
Recoveries	126	114	388	284
TDR Allowance Adjustments	(5)	(2)	(7)	(3)
Ending Balance	2,832	3,096	2,832	3,096
Paycheck Protection Program
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	0	0	0	0
Initial Allowance on PCD Loans Acquired During the Period	0	0		0
Provision for Credit Losses	0	0	0	0
Charge- Offs	0	0	0	0
Recoveries	0	0	0	0
TDR Allowance Adjustments	0	0	0	0
Ending Balance	$ 0	$ 0	$ 0	0
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
Impact of Adoption of ASC 326 | Paycheck Protection Program
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance				$ 0

Allowance for Credit Losses - S

Allowance for Credit Losses - Schedule of Loan Portfolio, Excluding PCI Loans and Related Allowance (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Recorded Investment
Individually Evaluated	$ 45,837		$ 49,196
Collectively Evaluated	5,860,047		5,686,153
Total	5,905,884		5,735,349
Associated Allowance
Individually Evaluated	4,946		7,708
Collectively Evaluated	82,877		85,025
Total	87,823	$ 81,127	92,733	$ 94,013	$ 91,250	$ 35,154
Construction and land development
Recorded Investment
Individually Evaluated	80		276
Collectively Evaluated	227,379		244,832
Total	227,459		245,108
Associated Allowance
Individually Evaluated	3		13
Collectively Evaluated	2,600		4,907
Total	2,603	4,053	4,920	7,701	7,161	1,842
Commercial real estate - owner-occupied
Recorded Investment
Individually Evaluated	5,689		10,243
Collectively Evaluated	1,195,647		1,131,067
Total	1,201,336		1,141,310
Associated Allowance
Individually Evaluated	420		402
Collectively Evaluated	8,232		9,466
Total	8,652	8,676	9,868	7,219	5,562	5,361
Commercial real estate - non owner-occupied
Recorded Investment
Individually Evaluated	5,190		8,083
Collectively Evaluated	1,668,397		1,387,771
Total	1,673,587		1,395,854
Associated Allowance
Individually Evaluated	95		1,640
Collectively Evaluated	39,990		36,626
Total	40,085	34,807	38,266	34,018	38,992	7,863
Residential real estate
Recorded Investment
Individually Evaluated	18,654		16,506
Collectively Evaluated	1,448,675		1,326,122
Total	1,467,329		1,342,628
Associated Allowance
Individually Evaluated	513		2,064
Collectively Evaluated	13,614		15,436
Total	14,127	12,543	17,500	17,325	20,453	7,667
Commercial and financial
Recorded Investment
Individually Evaluated	15,478		13,281
Collectively Evaluated	967,074		841,472
Total	982,552		854,753
Associated Allowance
Individually Evaluated	3,350		3,498
Collectively Evaluated	16,174		15,192
Total	19,524	18,016	18,690	24,654	15,514	9,716
Consumer
Recorded Investment
Individually Evaluated	746		807
Collectively Evaluated	162,273		187,928
Total	163,019		188,735
Associated Allowance
Individually Evaluated	565		91
Collectively Evaluated	2,267		3,398
Total	2,832	3,032	3,489	3,096	3,568	2,705
Paycheck Protection Program
Recorded Investment
Individually Evaluated	0		0
Collectively Evaluated	190,602		566,961
Total	190,602		566,961
Associated Allowance
Individually Evaluated	0		0
Collectively Evaluated	0		0
Total	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021USD ($)contract	Sep. 30, 2021USD ($)contract	Dec. 31, 2020USD ($)
Derivative [Line Items]
Loss recognized in OCI	$ 200	$ 500
Reclassification from AOCI into income	100	200
Back-to-Back Swap
Derivative [Line Items]
Notional amount	180,610	$ 180,610	$ 182,379
Weighted average maturity (in years)		6 years 10 months 24 days	7 years 6 months
Back-to-Back Swap | Other Assets and Other Liabilities
Derivative [Line Items]
Fair value of derivative assets and liabilities	9,110	$ 9,110	$ 13,339
Interest Rate Floor
Derivative [Line Items]
Notional amount	$ 300,000	$ 300,000	300,000
Number of derivative contracts | contract	2	2
Amount expected to be reclassified from accumulated other comprehensive income into interest income		$ 400
Interest Rate Floor | Other Assets
Derivative [Line Items]
Fair value of derivative assets and liabilities	$ 514	514	1,004
Fair value of derivative assets	500	500	$ 1,000
Interest Rate Floor, October 2023 Maturity
Derivative [Line Items]
Notional amount	150,000	150,000
Interest Rate Floor, November 2023 Maturity
Derivative [Line Items]
Notional amount	$ 150,000	$ 150,000

Derivatives - Schedule of Deriv

Derivatives - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Back-to-back swaps
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	$ 180,610	$ 182,379
Back-to-back swaps | Other Assets and Other Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative assets and liabilities	9,110	13,339
Interest rate floors
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	300,000	300,000
Interest rate floors | Other Assets
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative assets and liabilities	$ 514	$ 1,004

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase - Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Carrying Value | Repurchase Agreement | Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair value of pledged securities - overnight and continuous:
Fair value of debt securities pledged as collateral	$ 134,801	$ 137,268

Noninterest Income and Expens_2

Noninterest Income and Expense - Summary of Noninterest Income and Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Noninterest Income [Abstract]
Interchange income	$ 4,131	$ 3,682	$ 12,096	$ 10,115
Marine finance fees	152	242	518	545
SBA gains	812	252	1,331	572
BOLI income	1,128	899	2,859	2,672
Other income	5,228	2,370	11,221	7,869
Noninterest income, gross	19,058	16,942	52,220	45,387
Securities (losses) gains, net	(30)	4	(199)	1,253
Total Noninterest Income (Note I – Noninterest Income and Expense)	19,028	16,946	52,021	46,640
Noninterest expense
Salaries and wages	27,919	23,125	72,278	67,049
Employee benefits	4,177	3,995	13,110	11,629
Outsourced data processing costs	5,610	6,128	14,754	14,820
Telephone/data lines	810	705	2,433	2,210
Occupancy	3,541	3,858	10,640	10,596
Furniture and equipment	1,567	1,576	3,987	4,557
Marketing	1,353	1,513	3,523	3,788
Legal and professional fees	4,151	3,018	8,915	8,658
FDIC assessments	651	474	1,692	740
Amortization of intangibles	1,306	1,497	3,729	4,436
Foreclosed property expense and net (gain) loss on sale	66	512	(89)	442
Provision for credit losses on unfunded commitments	133	756	133	980
Other	3,984	4,517	12,067	11,966
Total	55,268	51,674	147,172	141,871
Service charges on deposit accounts
Noninterest Income [Abstract]
Revenue from contracts with customers	2,495	2,242	7,171	7,006
Wealth management income
Noninterest Income [Abstract]
Revenue from contracts with customers	2,562	1,972	7,272	5,558
Mortgage banking fees
Noninterest Income [Abstract]
Revenue from contracts with customers	$ 2,550	$ 5,283	$ 9,752	$ 11,050

Equity Capital (Details)

Equity Capital (Details)	Sep. 30, 2021
Equity [Abstract]
Regulatory threshold percentage for well-capitalized institutions	0.065

Fair Value - Fair Value of Asse

Fair Value - Fair Value of Assets Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financial Assets
Available-for-sale debt securities	$ 1,546,155	$ 1,398,157
Loans held for sale	49,597	68,890
Other real estate owned	13,628	12,750
Fair Value, Measurements, Recurring
Financial Assets
Available-for-sale debt securities	1,546,155	1,398,157
Derivative financial instruments	9,624	14,343
Loans held for sale	49,597	68,890
Equity securities	9,404	6,530
Financial Liabilities
Derivative financial instruments	9,110	13,339
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Available-for-sale debt securities	199	101
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	9,404	6,530
Financial Liabilities
Derivative financial instruments	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Available-for-sale debt securities	1,545,956	1,398,056
Derivative financial instruments	9,624	14,343
Loans held for sale	49,597	68,890
Equity securities	0	0
Financial Liabilities
Derivative financial instruments	9,110	13,339
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Available-for-sale debt securities	0	0
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	0	0
Financial Liabilities
Derivative financial instruments	0	0
Fair Value, Measurements, Nonrecurring
Financial Assets
Loans	9,945	8,806
Other real estate owned	13,628	12,750
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Loans	0	0
Other real estate owned	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Loans	942	1,900
Other real estate owned	390	72
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Loans	9,003	6,906
Other real estate owned	$ 13,238	$ 12,678

Fair Value - Aggregate Fair Val

Fair Value - Aggregate Fair Value and Contractual Balance of Loans for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of loans held for sale	$ 49,597	$ 68,890
Excess	1,425	2,475
Contractual Balance
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of loans held for sale	$ 48,172	$ 66,415

Fair Value - Narrative (Details

Fair Value - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Average capitalization rate	7.00%
Additions	$ 5.4
Paydowns, chargeoffs, sales and writedowns	2.6
Loans moved back into accruing status	0.7
Collateral-Dependent Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	14.2	$ 16.5
Specific reserve on collateral dependent loans	4.3	$ 7.7
Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Paydowns, chargeoffs, sales and writedowns	1.6
Reductions related to sale of loans	$ 2.1

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financial Assets
Debt securities held-to-maturity	$ 526,502	$ 184,484
Time deposits with other banks	750	750
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Debt securities held-to-maturity	0	0
Time deposits with other banks	0	0
Loans, net	0	0
Financial Liabilities
Deposit liabilities	0	0
Subordinated debt	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Debt securities held-to-maturity	518,464	192,179
Time deposits with other banks	757	762
Loans, net	0	0
Financial Liabilities
Deposit liabilities	0	0
Subordinated debt	58,399	58,227
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Debt securities held-to-maturity	0	0
Time deposits with other banks	0	0
Loans, net	5,810,038	5,686,019
Financial Liabilities
Deposit liabilities	8,336,134	6,936,097
Subordinated debt	0	0
Carrying Value | Fair Value, Measurements, Recurring
Financial Assets
Debt securities held-to-maturity	526,502	184,484
Time deposits with other banks	750	750
Loans, net	5,808,116	5,633,810
Financial Liabilities
Deposit liabilities	8,334,172	6,932,561
Subordinated debt	$ 71,576	$ 71,365

Business Combinations - Narrati

Business Combinations - Narrative (Details) $ in Thousands	Aug. 23, 2021branch	Aug. 06, 2021USD ($)branch	Aug. 21, 2020USD ($)branch	Mar. 13, 2020USD ($)branch	Sep. 30, 2021USD ($)	Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Business Acquisition [Line Items]
Initial allowance for credit losses					$ 87,823	$ 81,127	$ 92,733	$ 94,013	$ 91,250	$ 35,154
Sabal Palm Bancorp, Inc.
Business Acquisition [Line Items]
Number of branches operated | branch	3
Loans to be acquired in acquisition					255,000
Deposits to be acquired in acquisition					389,000
Florida Business Bank, Corp.
Business Acquisition [Line Items]
Number of branches operated | branch	1
Loans to be acquired in acquisition					139,000
Deposits to be acquired in acquisition					$ 169,000
Legacy Bank of Florida
Business Acquisition [Line Items]
Number of branches operated | branch		5
Loans to be acquired in acquisition		$ 477,215
Deposits to be acquired in acquisition		$ 494,921
Percentage of common stock acquired		100.00%
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)		0.1703
Goodwill recognized from acquisition, nondeductible		$ 31,000
Initial allowance for credit losses		11,200
Legacy Bank of Florida | PCD Loans
Business Acquisition [Line Items]
Loans to be acquired in acquisition		62,589
Initial allowance for credit losses		3,000
Legacy Bank of Florida | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Initial allowance for credit losses		$ 8,200
Fourth Street Banking Company
Business Acquisition [Line Items]
Number of branches operated | branch			2
Loans to be acquired in acquisition			$ 303,434
Deposits to be acquired in acquisition			$ 329,662
Percentage of common stock acquired			100.00%
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)			0.1275
Goodwill recognized from acquisition, nondeductible			$ 9,000
Initial allowance for credit losses			10,400
Fourth Street Banking Company | PCD Loans
Business Acquisition [Line Items]
Loans to be acquired in acquisition			49,373
Initial allowance for credit losses			5,800
Fourth Street Banking Company | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Initial allowance for credit losses			$ 4,600
First Bank of the Palm Beaches
Business Acquisition [Line Items]
Number of branches operated | branch				2
Loans to be acquired in acquisition				$ 146,777
Deposits to be acquired in acquisition				$ 173,741
Percentage of common stock acquired				100.00%
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)				0.2000
Goodwill recognized from acquisition, nondeductible				$ 6,900
Initial allowance for credit losses				2,300
First Bank of the Palm Beaches | PCD Loans
Business Acquisition [Line Items]
Loans to be acquired in acquisition				43,038
Initial allowance for credit losses				500
First Bank of the Palm Beaches | Acquired Non-PCD Loans
Business Acquisition [Line Items]
Initial allowance for credit losses				$ 1,800

Business Combinations - Purchas

Business Combinations - Purchase Price (Details) $ / shares in Units, $ in Thousands	Aug. 06, 2021USD ($)$ / sharesshares	Aug. 21, 2020USD ($)$ / sharesshares	Mar. 13, 2020USD ($)$ / sharesshares
Legacy Bank of Florida
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares	15,778,000
Per share 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 converted	4,736
Total purchase price	$ 91,230
Fourth Street Banking Company
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares		11,220,000
Shares issued upon conversion of convertible debt (in shares) | shares		5,405,000
Per share exchange ratio (in shares)		0.1275
Number of shares of common stock issued (in shares) | shares		2,120,000
Multiplied by common stock price per share (in dollars per share) | $ / shares		$ 19.40
Value of common stock issued		$ 41,121
Cash paid for vested stock options		596
Total purchase price		$ 41,717
First Bank of the Palm Beaches
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares			5,213,000
Per share exchange ratio (in shares)			0.2000
Number of shares of common stock issued (in shares) | shares			1,043,000
Multiplied by common stock price per share (in dollars per share) | $ / shares			$ 20.17
Value of common stock issued			$ 21,031
Cash paid for vested stock options			866
Total purchase price			$ 21,897

Business Combinations - Fair Va

Business Combinations - Fair Value of the Assets Purchased, Including Goodwill and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Aug. 06, 2021	Dec. 31, 2020	Aug. 21, 2020	Mar. 13, 2020
Assets:
Goodwill	$ 252,154		$ 221,176
Legacy Bank of Florida
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
Fourth Street Banking Company
Assets:
Cash				$ 38,082
Investment securities				3,498
Loans				303,434
Bank premises and equipment				9,480
Core deposit intangibles				1,310
Goodwill				9,030
Other assets				7,088
Total assets				371,922
Liabilities:
Deposits				329,662
Other liabilities				543
Total liabilities				$ 330,205
First Bank of the Palm Beaches
Assets:
Cash					$ 34,749
Investment securities					447
Loans					146,777
Bank premises and equipment					6,086
Core deposit intangibles					819
Goodwill					6,861
Other assets					1,305
Total assets					197,044
Liabilities:
Deposits					173,741
Other liabilities					1,406
Total liabilities					175,147
First Bank of the Palm Beaches | Initially Measured
Assets:
Cash					34,749
Investment securities					447
Loans					146,839
Bank premises and equipment					6,086
Core deposit intangibles					819
Goodwill					6,799
Other assets					1,285
Total assets					197,024
Liabilities:
Deposits					173,741
Other liabilities					1,386
Total liabilities					175,127
First Bank of the Palm Beaches | Measurement Period Adjustments
Assets:
Cash					0
Investment securities					0
Loans					(62)
Bank premises and equipment					0
Core deposit intangibles					0
Goodwill					62
Other assets					20
Total assets					20
Liabilities:
Deposits					0
Other liabilities					20
Total liabilities					$ 20

Business Combinations - Fair _2

Business Combinations - Fair Value of Acquired Loans (Details) - USD ($) $ in Thousands	Aug. 06, 2021	Aug. 21, 2020	Mar. 13, 2020
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
Fourth Street Banking Company
Business Acquisition [Line Items]
Book Balance		$ 317,193
Fair Value		303,434
Fourth Street Banking Company | Construction and land development
Business Acquisition [Line Items]
Book Balance		9,197
Fair Value		8,851
Fourth Street Banking Company | Commercial real estate - owner-occupied
Business Acquisition [Line Items]
Book Balance		77,936
Fair Value		75,215
Fourth Street Banking Company | Commercial real estate - non owner-occupied
Business Acquisition [Line Items]
Book Balance		76,014
Fair Value		71,171
Fourth Street Banking Company | Residential real estate
Business Acquisition [Line Items]
Book Balance		23,548
Fair Value		23,227
Fourth Street Banking Company | Commercial and financial
Business Acquisition [Line Items]
Book Balance		72,745
Fair Value		68,096
Fourth Street Banking Company | Consumer
Business Acquisition [Line Items]
Book Balance		2,748
Fair Value		2,694
Fourth Street Banking Company | PPP loans
Business Acquisition [Line Items]
Book Balance		55,005
Fair Value		$ 54,180
First Bank of the Palm Beaches
Business Acquisition [Line Items]
Book Balance			$ 150,342
Fair Value			146,777
First Bank of the Palm Beaches | Construction and land development
Business Acquisition [Line Items]
Book Balance			9,493
Fair Value			9,012
First Bank of the Palm Beaches | Commercial real estate - owner-occupied
Business Acquisition [Line Items]
Book Balance			46,221
Fair Value			45,171
First Bank of the Palm Beaches | Commercial real estate - non owner-occupied
Business Acquisition [Line Items]
Book Balance			36,268
Fair Value			35,079
First Bank of the Palm Beaches | Residential real estate
Business Acquisition [Line Items]
Book Balance			47,569
Fair Value			47,043
First Bank of the Palm Beaches | Commercial and financial
Business Acquisition [Line Items]
Book Balance			9,659
Fair Value			9,388
First Bank of the Palm Beaches | Consumer
Business Acquisition [Line Items]
Book Balance			1,132
Fair Value			$ 1,084

Business Combinations - Purch_2

Business Combinations - Purchased Credit Impaired Loans (Details) - USD ($) $ in Thousands	Aug. 06, 2021	Aug. 21, 2020	Mar. 13, 2020
Legacy Bank of Florida
Business Acquisition [Line Items]
Total PCD loans acquired	$ 477,215
Fourth Street Banking Company
Business Acquisition [Line Items]
Total PCD loans acquired		$ 303,434
First Bank of the Palm Beaches
Business Acquisition [Line Items]
Total PCD loans acquired			$ 146,777
PCD Loans | 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 PCD loans acquired	$ 62,589
PCD Loans | Fourth Street Banking Company
Business Acquisition [Line Items]
Book balance of loans at acquisition		59,455
Allowance for credit losses at acquisition		(5,763)
Non-credit related discount		(4,319)
Total PCD loans acquired		$ 49,373
PCD Loans | First Bank of the Palm Beaches
Business Acquisition [Line Items]
Book balance of loans at acquisition			43,682
Allowance for credit losses at acquisition			(516)
Non-credit related discount			(128)
Total PCD loans acquired			$ 43,038

Business Combinations - Pro-For

Business Combinations - Pro-Forma Information (Details) - Legacy Bank of Florida - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition, Pro Forma Information [Abstract]
Net interest income	$ 73,309	$ 68,164	$ 216,682	$ 207,388
Net income	$ 43,401	$ 24,098	$ 104,521	$ 39,930
EPS - basic (in dollars per share)	$ 0.75	$ 0.42	$ 1.81	$ 0.72
EPS - diluted (in dollars per share)	$ 0.74	$ 0.44	$ 1.79	$ 0.71

Uncategorized Items - sbcf-2021

Label	Element	Value
Accounting Standards Update [Extensible Enumeration]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]