International Bancshares (IBOC) 10-Q5 May 222022 Q1 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2022	May 02, 2022
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	000-09439
Entity Registrant Name	INTERNATIONAL BANCSHARES CORPORATION
Entity Incorporation, State or Country Code	TX
Entity Tax Identification Number	74-2157138
Entity Address, Address Line One	1200 San Bernardo Avenue
Entity Address, City or Town	Laredo
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	78042-1359
City Area Code	956
Local Phone Number	722-7611
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	IBOC
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		63,172,175
Entity Central Index Key	0000315709
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Statements of Cond

Consolidated Statements of Condition - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 3,448,199,000	$ 3,209,242,000
Investment securities:
Held to maturity debt securities (Market value of $3,400 on March 31, 2022 and $3,400 on December 31, 2021)	3,400,000	3,400,000
Available for sale debt securities (Amortized cost of $4,404,302 on March 31, 2022 and $4,254,960 on December 31, 2021)	4,141,997,000	4,213,920,000
Equity securities with readily determinable fair values	5,810,000	6,079,000
Total investment securities	4,151,207,000	4,223,399,000
Loans	7,048,277,000	7,209,151,000
Less allowance for credit losses	(110,227,000)	(110,374,000)
Net loans	6,938,050,000	7,098,777,000
Bank premises and equipment, net	438,147,000	447,082,000
Accrued interest receivable	27,555,000	30,593,000
Other investments	353,185,000	296,882,000
Cash surrender value of life insurance policies	298,863,000	297,218,000
Goodwill	282,532,000	282,532,000
Other assets	198,951,000	160,511,000
Total assets	16,136,689,000	16,046,236,000
Deposits:
Demand-non-interest bearing	6,037,206,000	5,838,526,000
Savings and interest bearing demand	4,561,651,000	4,590,548,000
Time	2,196,479,000	2,188,803,000
Total deposits	12,795,336,000	12,617,877,000
Securities sold under repurchase agreements	490,091,000	439,672,000
Other borrowed funds	436,090,000	436,138,000
Junior subordinated deferrable interest debentures	134,642,000	134,642,000
Other liabilities	132,851,000	109,426,000
Total liabilities	13,989,010,000	13,737,755,000
Shareholders' equity:
Common shares of $1.00 par value. Authorized 275,000,000 shares; issued 96,357,314 shares on March 31, 2022 and 96,350,977 shares on December 31, 2021	96,357,000	96,351,000
Surplus	152,405,000	152,144,000
Retained earnings	2,486,177,000	2,470,710,000
Accumulated other comprehensive income	(205,136,000)	(31,980,000)
Total shareholders' equity before treasury stock	2,529,803,000	2,687,225,000
Less cost of shares in treasury, 33,062,339 shares on March 31, 2022 and 32,979,273 on December 31, 2021	(382,124,000)	(378,744,000)
Total shareholders' equity	2,147,679,000	2,308,481,000
Total liabilities and shareholders' equity	$ 16,136,689,000	$ 16,046,236,000

Consolidated Statements of Co_2

Consolidated Statements of Condition (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Consolidated Statements of Condition
Held to maturity, Market value (in dollars)	$ 3,400	$ 3,400
Available for sale, Amortized cost (in dollars)	$ 4,404,302	$ 4,254,960
Common shares, par value (in dollars per share)	$ 1	$ 1
Common shares, Authorized shares	275,000,000	275,000,000
Common shares, issued shares	96,357,314	96,350,977
Treasury, shares	33,062,339	32,979,273

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Interest income:
Loans, including fees	$ 81,488	$ 92,114
Investment securities:
Taxable	13,190	4,875
Tax-exempt	350	395
Other interest income	1,404	490
Total interest income	96,432	97,874
Interest expense:
Savings deposits	1,101	929
Time deposits	2,504	3,198
Securities sold under repurchase agreements	184	141
Other borrowings	1,888	1,889
Junior subordinated deferrable interest debentures	709	708
Total interest expense	6,386	6,865
Net interest income	90,046	91,009
Provision for credit losses	1,481	1,192
Net interest income after provision for credit losses	88,565	89,817
Non-interest income:
Investment securities transactions, net		(4)
Other investments, net	2,882	4,085
Other income	9,092	3,630
Total non-interest income	43,512	36,237
Non-interest expense:
Employee compensation and benefits	31,119	30,162
Occupancy	6,272	5,617
Depreciation of bank premises and equipment	5,475	6,799
Professional fees	2,318	2,836
Deposit insurance assessments	1,057	887
Net operations, other real estate owned	(408)	1,245
Advertising	1,440	1,423
Software and software maintenance	4,177	4,440
Other	12,668	8,776
Total non-interest expense	64,118	62,185
Income before income taxes	67,959	63,869
Provision for income taxes	14,466	13,098
Net income	$ 53,493	$ 50,771
Basic earnings per common share:
Weighted average number of shares outstanding (in shares)	63,352,240	63,307,455
Net income (in dollars per share)	$ 0.84	$ 0.80
Fully diluted earnings per common share:
Weighted average number of shares outstanding (in shares)	63,498,268	63,419,706
Net income (in dollars per share)	$ 0.84	$ 0.80
Services charges on deposit accounts
Non-interest income:
Service charges	$ 17,257	$ 14,903
Other service charges, commissions and fees, Banking
Non-interest income:
Service charges	12,516	12,183
Other service charges, commissions and fees, Non-banking
Non-interest income:
Service charges	$ 1,765	$ 1,440

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Consolidated Statements of Comprehensive Income
Net income	$ 53,493	$ 50,771
Other comprehensive loss, net of tax:
Net unrealized holding losses on securities available for sale arising during period (net of tax effects of $(46,029), and $(801))	(173,156)	(3,015)
Reclassification adjustment for losses on securities available for sale included in net income (net of tax effects of $0 and $1)		3
Other comprehensive income, net of tax	(173,156)	(3,012)
Comprehensive (loss) income	$ (119,663)	$ 47,759

Consolidated Statements of Co_3

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Consolidated Statements of Comprehensive Income
Net unrealized holding gains (losses) on securities available for sale arising during period, tax effects	$ (46,029)	$ (801)
Reclassification adjustment for losses on securities available for sale included in net income, tax effects	$ 0	$ 1

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2020	$ 96,241	$ 149,334	$ 2,289,626	$ 20,825	$ (378,028)	$ 2,177,998
Balance (in shares) at Dec. 31, 2020	96,241
Increase (decrease) in shareholders' equity
Net income			50,771			50,771
Dividends:
Cash			(34,813)			(34,813)
Purchase of treasury stock					(48)	(48)
Exercise of stock options	$ 71	1,479				1,550
Exercise of stock options (in shares)	71
Stock compensation expense recognized in earnings		159				159
Other comprehensive loss, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments				(3,012)		(3,012)
Balance at Mar. 31, 2021	$ 96,312	150,972	2,305,584	17,813	(378,076)	2,192,605
Balance (in shares) at Mar. 31, 2021	96,312
Balance at Dec. 31, 2021	$ 96,351	152,144	2,470,710	(31,980)	(378,744)	2,308,481
Balance (in shares) at Dec. 31, 2021	96,351
Increase (decrease) in shareholders' equity
Net income			53,493			53,493
Dividends:
Cash			(38,026)			(38,026)
Purchase of treasury stock					(3,380)	(3,380)
Exercise of stock options	$ 6	140				146
Exercise of stock options (in shares)	6
Stock compensation expense recognized in earnings		121				121
Other comprehensive loss, net of tax:
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments				(173,156)		(173,156)
Balance at Mar. 31, 2022	$ 96,357	$ 152,405	$ 2,486,177	$ (205,136)	$ (382,124)	$ 2,147,679
Balance (in shares) at Mar. 31, 2022	96,357

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Consolidated Statements of Shareholders' Equity
Cash Dividends (in dollars per share)	$ 0.60	$ 0.55
Purchase of treasury stock (in shares)	83,066	999

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
Consolidated Statements of Cash Flows - USD ($)	Mar. 31, 2022	Mar. 31, 2021
Operating activities:
Net income	$ 53,493,000	$ 50,771,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit loss	1,481,000	1,192,000
Specific reserve, other real estate owned		150,000
Depreciation of bank premises and equipment	5,475,000	6,799,000
Gain on sale of bank premises and equipment	(2,991,000)	(34,000)
Gain on sale of other real estate owned	(777,000)	(219,000)
Accretion of investment securities discounts	(235,000)	(138,000)
Amortization of investment securities premiums	5,262,000	11,576,000
Investment securities transactions, net		4,000
Unrealized loss on equity securities with readily determinable fair values	269,000	77,000
Proceeds from settlements of claims		2,870,000
Stock based compensation expense	121,000	159,000
Earnings from affiliates and other investments	(2,474,000)	(2,448,000)
Deferred income taxes	80,000	(64,000)
Decrease in accrued interest receivable	3,038,000	6,091,000
(Increase) decrease in other assets	(4,455,000)	9,931,000
Increase in other liabilities	20,810,000	8,788,000
Net cash provided by operating activities	79,097,000	95,505,000
Investing activities:
Proceeds from maturities of securities	1,075,000	1,200,000
Proceeds from sales and calls of available for sale securities	0	2,510,000
Purchases of available for sale securities	(362,746,000)	(517,004,000)
Principal collected on mortgage backed securities	207,302,000	568,011,000
Net decrease in loans	159,246,000	60,966,000
Purchases of other investments	(42,043,000)	(34,086,000)
Distributions from other investments	1,583,000	2,201,000
Purchases of bank premises and equipment	(2,486,000)	(1,614,000)
Proceeds from sales of bank premises and equipment	6,461,000	34,000
Proceeds from sales of other real estate owned	4,898,000	1,544,000
Net cash (used in) provided by investing activities	(26,710,000)	83,762,000
Financing activities:
Net increase in non-interest bearing demand deposits	198,680,000	506,083,000
Net (decrease) increase in savings and interest bearing demand deposits	(28,897,000)	262,432,000
Net increase (decrease) in time deposits	7,676,000	(9,395,000)
Net increase in securities sold under repurchase agreements	50,419,000	11,185,000
Net decrease in other borrowed funds	(48,000)	(47,000)
Purchase of treasury stock	(3,380,000)	(48,000)
Proceeds from stock transactions	146,000	1,550,000
Payments of cash dividends	(38,026,000)	(34,813,000)
Net cash provided by financing activities	186,570,000	736,947,000
Increase in cash and cash equivalents	238,957,000	916,214,000
Cash and cash equivalents at beginning of period	3,209,242,000	1,997,238,000
Cash and cash equivalents at end of period	3,448,199,000	2,913,452,000
Supplemental cash flow information:
Interest paid	6,297,000	7,984,000
Non-cash investing and financing activities:
Purchases of available-for-sale securities not yet settled		100,933,000
Net transfers from loans to other real estate owned		$ 16,587,000
Net transfers from bank premises and equipment to other assets	$ 2,476,000

Basis of Presentation

Basis of Presentation	3 Months Ended
Basis of Presentation	Mar. 31, 2022
Basis of Presentation
Basis of Presentation	Note 1 — Basis of Presentation Our accounting and reporting policies conform to accounting principles generally accepted in the United States of America and to general practices within the banking industry. Our consolidated financial statements include the accounts of International Bancshares Corporation, and our wholly-owned bank subsidiaries, International Bank of Commerce, Laredo (“IBC”), Commerce Bank, International Bank of Commerce, Zapata, International Bank of Commerce, Brownsville, International Bank of Commerce, Oklahoma (the “Subsidiary Banks”) and our wholly-owned non-bank subsidiaries, IBC Trading Company, Premier Tierra Holdings, Inc., IBC Charitable and Community Development Corporation, Emerald Galveston Holdings, LLC, IBC Capital Corporation, and Diamond Beach Holdings, LLC. Our consolidated financial statements are unaudited, but include all adjustments, which, in the opinion of management, are necessary for a fair presentation of the results of the periods presented. All such adjustments were of a normal and recurring nature. These financial statements should be read in conjunction with the financial statements and the notes thereto in our latest Annual Report on Form 10-K. Our consolidated statement of condition at December 31, 2021 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“US GAAP”) for complete financial statements. Certain reclassifications have been made to make prior periods comparable. Operating results for the three months ended March 31, 2022 are not necessarily indicative of the results for the year ending December 31, 2022 or any future period. We operate as one segment. The operating information used by our chief executive officer for purposes of assessing performance and making operating decisions is the consolidated statements presented in this report. We have five active operating subsidiaries, the Subsidiary Banks. We apply the provisions of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”), FASB ASC 280, “Segment Reporting,” in determining our reportable segments and related disclosures. We have evaluated all events or transactions that occurred through the date we issued these financial statements. During this period, we did not have any material recognizable or non-recognizable subsequent events.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2022
Fair Value Measurements
Fair Value Measurements	Note 2 — Fair Value Measurements ASC Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”), defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurements. ASC 820 applies to all financial instruments that are being measured and reported on a fair value basis. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date; it also establishes a fair value hierarchy that prioritizes the inputs used in valuation methodologies into the following three levels: ● Level 1 Inputs - Unadjusted quoted prices in active markets for identical assets or liabilities. ● Level 2 Inputs - Observable inputs other than Level 1 inputs, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. ● Level 3 Inputs - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or other valuation techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of March 31, 2022 by level within the fair value measurement hierarchy: Fair Value Measurements at Reporting Date Using (in Thousands) Quoted Prices in Active Significant Assets/Liabilities Markets for Other Significant Measured at Identical Observable Unobservable Fair Value Assets Inputs Inputs March 31, 2022 (Level 1) (Level 2) (Level 3) Measured on a recurring basis: Assets: Available for sale debt securities U.S. Treasury securities $ 49,099 $ — $ 49,099 $ — Residential mortgage-backed securities 4,050,353 — 4,050,353 — States and political subdivisions 42,545 — 42,545 — Equity Securities 5,810 5,810 — — $ 4,147,807 $ 5,810 $ 4,141,997 $ — The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of December 31, 2021 by level within the fair value measurement hierarchy: Fair Value Measurements at Reporting Date Using (in Thousands) Quoted Prices in Active Significant Assets/Liabilities Markets for Other Significant Measured at Identical Observable Unobservable Fair Value Assets Inputs Inputs December 31, 2021 (Level 1) (Level 2) (Level 3) Measured on a recurring basis: Assets: Available for sale securities Residential mortgage - backed securities $ 4,169,363 $ — $ 4,169,363 $ — States and political subdivisions 44,557 — 44,557 — Equity Securities 6,079 6,079 — — $ 4,219,999 $ 6,079 $ 4,213,920 $ — Available-for-sale debt securities are classified within Level 1 or 2 of the valuation hierarchy. Equity securities with readily determinable fair values are classified within Level 1. For debt investments classified as Level 2 in the fair value hierarchy, we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. Certain financial assets and financial liabilities are measured at fair value on a non-recurring basis. The instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended March 31, 2022 by level within the fair value measurement hierarchy: Fair Value Measurements at Reporting Date Using (in thousands) Quoted Assets/Liabilities Prices in Measured at Active Significant Fair Value Markets for Other Significant Net Provision Period ended Identical Observable Unobservable (Credit) March 31, Assets Inputs Inputs During 2022 (Level 1) (Level 2) (Level 3) Period Measured on a non-recurring basis: Assets: Watch-List doubtful loans $ — $ — $ — $ — $ — Other real estate owned $ — $ — $ — $ — $ — The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended December 31, 2021 by level within the fair value measurement hierarchy: Fair Value Measurements at Reporting Date Using (in thousands) Quoted Assets/Liabilities Prices in Measured at Active Significant Fair Value Markets Other Significant Net (Credit) Year ended for Identical Observable Unobservable Provision December 31, Assets Inputs Inputs During 2021 (Level 1) (Level 2) (Level 3) Period Measured on a non-recurring basis: Assets: Watch-List doubtful loans $ 55 $ — $ — $ 55 $ 209 Other real estate owned 18,095 — — 18,095 2,655 Our assets measured at fair value on a non-recurring basis are limited to loans classified as Watch List – Doubtful and other real estate owned. The fair value of Watch List-Doubtful loans is derived in accordance with FASB ASC 310, “Receivables”. They are primarily comprised of collateral-dependent commercial loans. As the primary sources of loan repayments decline, the secondary repayment source, the collateral, takes on greater significance. Correctly evaluating the fair value becomes even more important. Re-measurement of the loan to fair value is done through a specific valuation allowance included in the allowance for credit losses (“ACL”). The fair value of the loan is based on the fair value of the collateral, as determined through either an appraisal or evaluation process. The basis for our appraisal and appraisal review process is based on regulatory guidelines and strives to comply with all regulatory appraisal laws, regulations, and the Uniform Standards of Professional Appraisal Practice. All appraisals and evaluations are “as is” (the property’s highest and best use) valuations based on the current conditions of the property/project at that point in time. The determination of the fair value of the collateral is based on the net realizable value, which is the appraised value less any closing costs, when applicable. As of March 31, 2022, we had $859,000 of doubtful commercial collateral dependent loans, of which $0 had an appraisal performed within the immediately preceding twelve months, and of which $859,000 had an evaluation performed within the immediately preceding twelve months. As of December 31, 2021, we had approximately $993,000 of doubtful commercial collateral dependent loans, of which $0 had an appraisal performed within the immediately preceding twelve months and of which $896,000 had an evaluation performed within the immediately preceding twelve months. Our determination to either seek an appraisal or to perform an evaluation begins in weekly credit quality meetings, where the committee analyzes the existing collateral values of the doubtful loans and where obsolete appraisals are identified. In order to determine whether we would obtain a new appraisal or perform an internal evaluation to determine the fair value of the collateral, the credit committee reviews the existing appraisal to determine if the collateral value is reasonable in view of the current use of the collateral and the economic environment related to the collateral. If the analysis of the existing appraisal does not find that the collateral value is reasonable under the current circumstances, we would obtain a new appraisal on the collateral or perform an internal evaluation of the collateral. The ultimate decision to get a new appraisal rests with the independent credit administration group. A new appraisal is not required if an internal evaluation, as performed by in-house experts, is able to appropriately update the original appraisal assumptions to reflect current market conditions and provide an estimate of the collateral’s market value for analysis of the doubtful loan. The internal evaluations must be in writing and contain sufficient information detailing the analysis, assumptions and conclusions, and they must support performing an evaluation in lieu of ordering a new appraisal. Other real estate owned is comprised of real estate acquired by foreclosure and deeds in lieu of foreclosure. Other real estate owned is carried at the lower of the recorded investment in the property or its fair value less estimated costs to sell such property (as determined by independent appraisal) within Level 3 of the fair value hierarchy. Prior to foreclosure, the value of the underlying loan is written down to the fair value of the real estate to be acquired by a charge to the ACL, if necessary. The fair value is reviewed periodically and subsequent write-downs are made, accordingly, through a charge to operations. Other real estate owned is included in other assets on the consolidated financial statements. For the three months ended March 31, 2022 and the twelve months ended December 31, 2021, we recorded $0 n charges to the ACL in connection with loans transferred to other real estate owned. For the three months ended March 31, 2022 and the twelve months ended December 31, 2021, we recorded $0 and $2,655,000, respectively, in adjustments to fair value in connection with other real estate owned. The fair value estimates, methods, and assumptions for our financial instruments at March 31, 2022 and December 31, 2021 are outlined below. Cash and Cash Equivalents For these short-term instruments, the carrying amount is a reasonable estimate of fair value. Time Deposits with Banks The carrying amounts of time deposits with banks approximate fair value. Investment Securities Held-to-Maturity The carrying amounts of investments held-to-maturity approximate fair value. Investment Securities For investment securities, which include U.S. Treasury securities, obligations of other U.S. government agencies, obligations of states and political subdivisions and mortgage pass-through and related securities, fair values are from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. See disclosures of fair value of investment securities in Note 6. Loans Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial, real estate and consumer loans, as outlined by regulatory reporting guidelines. Each category is segmented into fixed and variable interest rate terms and by performing and non-performing categories. For variable rate performing loans, the carrying amount approximates the fair value. For fixed-rate performing loans, except residential mortgage loans, the fair value is calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest rate risk inherent in the loan. For performing residential mortgage loans, fair value is estimated by discounting contractual cash flows adjusted for prepayment estimates using discount rates based on secondary market sources or the primary origination market. Fixed-rate performing loans are within Level 3 of the fair value hierarchy. At March 31, 2022 and December 31, 2021, the carrying amount of fixed rate performing loans w Accrued Interest The carrying amounts of accrued interest approximate fair value. Deposits The fair value of deposits with no stated maturity, such as non-interest bearing demand deposit accounts, savings accounts and interest bearing demand deposit accounts, was equal to the amount payable on demand as of March 31, 2022 and December 31, 2021. The fair value of time deposits is based on the discounted value of contractual cashflows. The discount rate is based on currently offered rates. Time deposits are within Level 3 of the fair value hierarchy. At March 31, 2022 and December 31, 2021, the carrying amount of time deposits was $2,196,479,000 and $2,188,803,000, respectively, and the estimated fair value was $2,194,923,000 and $2,186,547,000, respectively. Securities Sold Under Repurchase Agreements Securities sold under repurchase agreements are short-term maturities. Due to the contractual terms of the instruments, the carrying amounts approximated fair value at March 31, 2022 and December 31, 2021. Junior Subordinated Deferrable Interest Debentures We currently have floating-rate junior subordinated deferrable interest debentures outstanding. Due to the contractual terms of the floating-rate junior subordinated deferrable interest debentures, the carrying amounts approximated fair value at March 31, 2022 and December 31, 2021. Other Borrowed Funds We currently have long-term borrowings issued from the Federal Home Loan Bank (“FHLB”). The long-term borrowings outstanding at March 31, 2022 and December 31, 2021 are fixed-rate borrowings and the fair value is based on established market spreads for similar types of borrowings. The fixed rate long-term borrowings are included in Level 2 of the fair value hierarchy. At March 31, 2022 and December 31, 2021, the carrying amount of the fixed rate long-term FHLB borrowings was $436,090,000 and $436,138,000, respectively, and the estimated fair value was $445,162,000 and $455,187,000 , respectively. Commitments to Extend Credit and Letters of Credit Commitments to extend credit and fund letters of credit are principally at current interest rates, and, therefore, the carrying amount approximates fair value. Limitations Fair value estimates are made at a point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time our entire holdings of a particular financial instrument. Because no market exists for a significant portion of our financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on- and off-statement of condition financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other significant assets and liabilities that are not considered financial assets or liabilities include the bank premises and equipment and core deposit value. In addition, the tax ramifications related to the effect of fair value estimates have not been considered in the above estimates.

Loans

Loans	3 Months Ended
Loans	Mar. 31, 2022
Loans
Loans	Note 3 — Loans A summary of loans, by loan type at March 31, 2022 and December 31, 2021 is as follows: March 31, December 31, 2022 2021 (Dollars in Thousands) Commercial, financial and agricultural $ 4,278,715 $ 4,497,444 Real estate - mortgage 840,373 867,831 Real estate - construction 1,742,698 1,668,113 Consumer 41,019 40,966 Foreign 145,472 134,797 Total loans $ 7,048,277 $ 7,209,151

Allowance for Credit Losses

Allowance for Credit Losses	3 Months Ended
Allowance for Credit Losses	Mar. 31, 2022
Allowance for Credit Losses
Allowance for Credit Losses	Note 4 — Allowance for Credit Losses The estimation of the ACL is based on a loss-rate methodology that measures lifetime losses on loan pools that have similar risk characteristics. Loans that do not have similar risk characteristics are evaluated on an individual basis. The segmentation of the loan portfolio into pools requires a balancing process between capturing similar risk characteristics and containing sufficient loss history to provide meaningful results. Our segmentation starts at the general loan category with further sub-segmentation based on collateral types that may be of meaningful size and/or may contain sufficient differences in risk characteristics based on management’s judgement that would warrant further segmentation. The general loan categories along with primary risk characteristics used in our calculation are as follows: Commercial and industrial loans. Construction and land development loans. Commercial real estate loans. This category includes loans secured by farmland, multifamily properties, owner occupied commercial properties, and non-owner occupied commercial properties. Owner occupied commercial properties include warehouses often along the border for import/export operations, office space where the borrower is the primary tenant, restaurants and other single-tenant retail. Non-owner occupied commercial properties include hotels, retail centers, office and professional buildings, and leased warehouses. These loans carry risk of repayment when market values deteriorate, the business experiences turnover in key management, the business has an inability to attract or keep occupancy levels stable, or when the market experiences an exit of a specific business type that is significant to the local economy, such as a manufacturing plant. 1-4 family mortgages. This category includes both first and second lien mortgages for the purpose of home purchases or refinancing of existing mortgage loans. A small portion of this loan category is related to home equity lines of credits, lots purchases, and home construction. Loan repayments may be affected by unemployment or underemployment and deteriorating market values of real estate. Consumer loans. The loan pools are further broken down using a risk-based segmentation based on internal classifications for commercial loans and past due status for consumer mortgage loans. Non-mortgage consumer loans are evaluated as one segment. On a weekly basis, commercial loan past due reports are reviewed by the credit quality committee to determine if a loan has any potential problems and if a loan should be placed on our internal Watch List report. Additionally, our credit department reviews the majority of our loans for proper internal classification purposes regardless of whether they are past due and segregates any loans with potential problems for further review. The credit department will discuss the potential problem loans with the servicing loan officers to determine any relevant issues that were not discovered in the evaluation. Also, an analysis of loans that is provided through examinations by regulatory authorities is considered in the review process. After the above analysis is completed, we will determine if a loan should be placed on an internal Watch List report because of issues related to the analysis of the credit, credit documents, collateral and/or payment history. Our internal Watch List report is segregated into the following categories: (i) Pass, (ii) Economic Monitoring, (iii) Special Review, (iv) Watch List—Pass, (v) Watch List—Substandard, and (vi) Watch List—Doubtful. The loans placed in the Special Review category and lower rated credits reflect our opinion that the loans reflect potential weakness which require monitoring on a more frequent basis. Credits in those categories are reviewed and discussed on a regular basis, no less frequently than quarterly, with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the Watch List—Pass category and lower rated credits reflect our opinion that the credit contains weaknesses which represent a greater degree of risk, which warrant “extra attention.” Credits in this category are reviewed and discussed on a regular basis with the credit department and the lending staff to determine if a change in category is warranted. The loans placed in the Watch List—Substandard category are considered to be potentially inadequately protected by the current sound worth and debt service capacity of the borrower or of any pledged collateral. These credit obligations, even if apparently protected by collateral value, have shown defined weaknesses related to adverse financial, managerial, economic, market or political conditions which may jeopardize repayment of principal and interest. Furthermore, there is the possibility that we may sustain some future loss if such weaknesses are not corrected. The loans placed in the Watch List—Doubtful category have shown defined weaknesses and it is likely, based on current information and events, that we will be unable to collect all principal and/or interest amounts contractually due. Watch List—Doubtful loans are placed on non-accrual when they are moved to that category. For the purposes of the ACL, in order to maintain segments with sufficient history for meaningful results, the credits in the Pass and Economic Monitoring categories are aggregated, the credits in the Special Review and Watch List—Pass credits are aggregated, and the credits in the Watch List—Substandard category remain in their own segment. For loans that are classified as Watch List—Doubtful, management evaluates these credits in accordance with ASC 310-10, “Receivables,” and, if deemed necessary, a specific reserve is allocated to the loan. The specific reserve allocated under ASC 310-10, is based on (i) the present value of expected future cash flows discounted at the loan’s effective interest rate; (ii) the loan’s observable market price; or (iii) net realizable value of the fair value of the collateral if the loan is collateral dependent. Substantially all of our loans evaluated as Watch List—Doubtful under ASC 310-10 are measured using the fair value of collateral method. In rare cases, we may use other methods to determine the specific reserve of a loan under ASC 310-10 if such loan is not collateral dependent. Within each collectively evaluated pool, the robustness of the lifetime historical loss-rate is evaluated and, if needed, is supplemented with peer loss rates through a model risk adjustment. Certain qualitative loss factors are then evaluated to incorporate management’s two-year reasonable and supportable forecast period followed by a reversion to the pool’s average lifetime loss-rate. Those qualitative loss factors are: (i) trends in portfolio volume and composition, (ii) volume and trends in classified loans, delinquencies, non-accruals and TDR’s, (iii) concentration risk, (iv) trends in underlying collateral value, (v) changes in policies, procedures, and strategies, and (vi) economic conditions. Qualitative factors also include potential losses stemming from operational risk factors arising from fraud, natural disasters, pandemics and geopolitical events. Should any of the factors considered by management in evaluating the adequacy of the ACL change, our estimate could also change, which could affect the level of future credit loss expense. We have elected to not measure an ACL for accrued interest receivable given our timely approach in identifying and writing off uncollectible accrued interest. An ACL for off-balance sheet exposure is derived from a projected usage rate of any unfunded commitment multiplied by the historical loss rate, plus model risk adjustment, if any, of the on-balance sheet loan pools. Our management continually reviews the ACL of the Subsidiary Banks using the amounts determined from the estimates established on specific doubtful loans, the estimate established on quantitative historical loss percentages, and the estimate based on qualitative current conditions and reasonable and supportable two-year forecasted data. Our methodology reverts to the average lifetime loss-rate beyond the forecast period when we can no longer develop reasonable and supportable forecasts. Should any of the factors considered by management in evaluating the adequacy of the estimate for current expected credit losses change, our estimate of current expected credit losses could also change, which could affect the level of future credit loss expense. While the calculation of our ACL utilizes management’s best judgment and all information reasonably available, the adequacy of the ACL is dependent on a variety of factors beyond our control, including, among other things, the performance of the entire loan portfolio, the economy, government actions, changes in interest rates and the view of regulatory authorities towards loan classifications. A summary of the transactions in the allowance for credit loan losses by loan class is as follows: Three Months Ended March 31, 2022 Domestic Foreign Commercial Real Estate: Other Commercial Construction & Real Estate: Commercial Land Farmland & Real Estate: Residential: Residential: Commercial Development Commercial Multifamily First Lien Junior Lien Consumer Foreign Total (Dollars in Thousands) Balance at December 31, 2021 $ 23,178 $ 35,390 $ 35,654 $ 3,291 $ 4,073 $ 7,754 $ 272 $ 762 $ 110,374 Losses charged to allowance (2,112) (2) — — (99) (28) (88) — (2,329) Recoveries credited to allowance 602 2 8 — 30 48 11 — 701 Net (losses) recoveries charged to allowance (1,510) — 8 — (69) 20 (77) — (1,628) Credit loss expense 2,233 982 (808) (229) 12 (728) 69 (50) 1,481 Balance at March 31, 2022 $ 23,901 $ 36,372 $ 34,854 $ 3,062 $ 4,016 $ 7,046 $ 264 $ 712 $ 110,227 Three Months Ended March 31, 2021 Domestic Foreign Commercial Real Estate: Other Commercial Construction & Real Estate: Commercial Land Farmland & Real Estate: Residential: Residential: Commercial Development Commercial Multifamily First Lien Junior Lien Consumer Foreign Total (Dollars in Thousands) Balance at December 31, 2020 $ 21,908 $ 37,612 $ 30,000 $ 5,051 $ 3,874 $ 9,570 $ 291 $ 753 $ 109,059 Losses charged to allowance (1,893) — (356) — (72) — (32) — (2,353) Recoveries credited to allowance 458 — 12 — 11 21 8 — 510 Net (losses) recoveries charged to allowance (1,435) — (344) — (61) 21 (24) — (1,843) Credit loss expense 1,690 (3,206) 2,547 884 104 (855) 12 16 1,192 Balance at March 31, 2021 $ 22,163 $ 34,406 $ 32,203 $ 5,935 $ 3,917 $ 8,736 $ 279 $ 769 $ 108,408 The pool specific qualitative loss factors management deemed appropriate for the ACL calculation at December 31, 2021 remained constant in the March 31, 2022 ACL calculation. The table below provides additional information on the balance of loans individually or collectively evaluated for impairment and their related allowance, by loan class as of March 31, 2022 and December 31, 2021: March 31, 2022 Loans Individually Loans Collectively Evaluated For Evaluated For Impairment Impairment Recorded Recorded Investment Allowance Investment Allowance (Dollars in Thousands) Domestic Commercial $ 263 $ 29 $ 1,461,358 $ 23,872 Commercial real estate: other construction & land development 567 70 1,742,131 36,302 Commercial real estate: farmland & commercial 554 — 2,560,990 34,854 Commercial real estate: multifamily 123 — 255,427 3,062 Residential: first lien 207 — 398,642 4,016 Residential: junior lien — — 441,524 7,046 Consumer — — 41,019 264 Foreign — — 145,472 712 Total $ 1,714 $ 99 $ 7,046,563 $ 110,128 December 31, 2021 Loans Individually Loans Collectively Evaluated For Evaluated For Impairment Impairment Recorded Recorded Investment Allowance Investment Allowance (Dollars in Thousands) Domestic Commercial $ 298 $ 29 $ 1,501,554 $ 23,149 Commercial real estate: other construction & land development 589 70 1,667,524 35,320 Commercial real estate: farmland & commercial 562 — 2,710,494 35,654 Commercial real estate: multifamily 131 — 284,405 3,291 Residential: first lien 87 — 403,571 4,073 Residential: junior lien — — 464,173 7,754 Consumer — — 40,966 272 Foreign — — 134,797 762 Total $ 1,667 $ 99 $ 7,207,484 $ 110,275 The table below provides additional information on loans accounted for on a non-accrual basis by loan class at March 31, 2022 and December 31, 2021: March 31, 2022 December 31, 2021 (Dollars in Thousands) Domestic Commercial $ 263 $ 298 Commercial real estate: other construction & land development 567 589 Commercial real estate: farmland & commercial 554 562 Commercial real estate: multifamily 123 131 Residential: first lien 423 341 Total non-accrual loans $ 1,930 $ 1,921 The following table details loans accounted for as “troubled debt restructuring,” segregated by loan class. Loans accounted for as troubled debt restructuring are included in Watch List—Doubtful loans. March 31, 2022 December 31, 2021 (Dollars in Thousands) Domestic Residential: first lien $ 1,815 $ 2,254 Residential: junior lien 104 105 Consumer 831 878 Foreign 61 16 Total troubled debt restructuring $ 2,811 $ 3,253 We have worked with our customers affected by the prolonged economic crisis arising from COVID-19. We have offered and are prepared to continue to offer assistance in accordance with current regulatory guidance. That includes continuously reaching out to our customers and, in some cases, offering deferral plans. As of May 2, 2022, we had approximately s with some degree of payment deferrals in our system. In accordance with interagency regulatory guidance, these short-term deferrals are not considered troubled debt restructurings. T primarily of loans related to industries that have been significantly impacted by the COVID-19 pandemic, including the hospitality sector and special use facilities. With the passage of the Paycheck Protection Program (“PPP”), administered by the Small Business Association (“SBA”), we assisted our customers with applications for loans through the PPP. PPP loans earn interest at 1% and PPP loans made prior to June 5, 2020 have a two-year term, while those made after June 5, 2020 have a five-year however, PPP loans also include forgiveness provisions that we expect most customers will utilize. Customers began submitting applications for the forgiveness program in the third quarter of 2020. PPP loans were intended to support up to weeks of payroll and certain other costs to help those businesses remain viable and allow their employees to pay their bills. As of May 2, 2022, we had 590 PPP loans totaling approximately $35,793,000 outstanding. The PPP loans are fully guaranteed by the U.S. government through the SBA. The Subsidiary Banks charge-off that portion of any loan which management considers to represent a loss as well as that portion of any other loan which is classified as a “loss” by bank examiners. Commercial and industrial or real estate loans are generally considered by management to represent a loss, in whole or part, when an exposure beyond any collateral coverage is apparent and when no further collection of the loss portion is anticipated based on the borrower’s financial condition and general economic conditions in the borrower’s industry. Generally, unsecured consumer loans are charged-off when 90 days past due. While our management believes that it is generally able to identify borrowers with financial problems reasonably early and to monitor credit extended to such borrowers carefully, there is no precise method of predicting loan losses. The determination that a loan is likely to be uncollectible and that it should be wholly or partially charged-off as a loss is an exercise of judgment. Similarly, the determination of the adequacy of the ACL can be made only on a subjective basis. It is the judgment of our management that the ACL at March 31, 2022 was adequate to absorb probable losses from loans in the portfolio at that date. The following tables present information regarding the aging of past due loans by loan class at March 31, 2022 and December 31, 2021: March 31, 2022 90 Days or Total 30 - 59 60 - 89 90 Days or greater & Past Total Days Days Greater still accruing Due Current Portfolio (Dollars in Thousands) Domestic Commercial $ 2,160 $ 261 $ 442 $ 442 $ 2,863 $ 1,458,757 $ 1,461,620 Commercial real estate: other construction & land development 1,302 39 536 536 1,877 1,740,821 1,742,698 Commercial real estate: farmland & commercial 2,973 1,384 337 — 4,694 2,556,851 2,561,545 Commercial real estate: multifamily 10 — — — 10 255,540 255,550 Residential: first lien 2,541 693 5,164 4,887 8,398 390,451 398,849 Residential: junior lien 218 420 1,168 1,168 1,806 439,718 441,524 Consumer 243 99 6 6 348 40,671 41,019 Foreign 562 67 215 215 844 144,628 145,472 Total past due loans $ 10,009 $ 2,963 $ 7,868 $ 7,254 $ 20,840 $ 7,027,437 $ 7,048,277 December 31, 2021 90 Days or Total 30 - 59 60 - 89 90 Days or greater & Past Total Days Days Greater still accruing Due Current Portfolio (Dollars in Thousands) Domestic Commercial $ 2,534 $ 303 $ 577 $ 577 $ 3,414 $ 1,498,438 $ 1,501,852 Commercial real estate: other construction & land development 499 334 188 188 1,021 1,667,092 1,668,113 Commercial real estate: farmland & commercial 18,164 172 644 307 18,980 2,692,076 2,711,056 Commercial real estate: multifamily — — — — — 284,536 284,536 Residential: first lien 2,342 1,212 5,129 4,937 8,683 394,975 403,658 Residential: junior lien 747 115 1,055 1,055 1,917 462,256 464,173 Consumer 231 88 4 4 323 40,643 40,966 Foreign 1,319 232 1,574 1,574 3,125 131,672 134,797 Total past due loans $ 25,836 $ 2,456 $ 9,171 $ 8,642 $ 37,463 $ 7,171,688 $ 7,209,151 A summary of the loan portfolio by credit quality indicator by loan class and by year of origination at March 31, 2022 and December 31, 2021 is presented below: 2022 2021 2020 2019 2018 Prior Total (Dollars in Thousands) Balance at March 31, 2022 Domestic Commercial Pass $ 157,913 $ 895,087 $ 130,593 $ 69,495 $ 56,082 $ 37,946 $ 1,347,116 Special Review 81 75,098 492 139 — — 75,810 Watch List - Pass 29,841 7,087 — 807 — — 37,735 Watch List - Substandard — 324 316 — 56 — 696 Watch List - Doubtful — 206 — — — 57 263 Total Commercial $ 187,835 $ 977,802 $ 131,401 $ 70,441 $ 56,138 $ 38,003 $ 1,461,620 Commercial real estate: other construction & land development Pass $ 170,274 $ 996,912 $ 206,608 $ 295,325 $ 33,305 $ 16,189 $ 1,718,613 Special Review — — — 211 — — 211 Watch List - Pass — — 23,100 — — — 23,100 Watch List - Substandard — 207 — — — — 207 Watch List - Doubtful — 465 102 — — — 567 Total Commercial real estate: other construction & land development $ 170,274 $ 997,584 $ 229,810 $ 295,536 $ 33,305 $ 16,189 $ 1,742,698 Commercial real estate: farmland & commercial Pass $ 220,689 $ 721,404 $ 639,609 $ 280,518 $ 403,252 $ 167,803 $ 2,433,275 Special Review 2,984 1,077 1,272 — 343 60 5,736 Watch List - Pass 51,890 260 9,312 — — 92 61,554 Watch List - Substandard — — 54,053 3,583 — 2,790 60,426 Watch List - Doubtful — — 216 337 — 1 554 Total Commercial real estate: farmland & commercial $ 275,563 $ 722,741 $ 704,462 $ 284,438 $ 403,595 $ 170,746 $ 2,561,545 Commercial real estate: multifamily Pass $ 3,335 $ 132,852 $ 62,874 $ 31,231 $ 6,901 $ 18,234 $ 255,427 Watch List - Doubtful — — 123 — — — 123 Total Commercial real estate: multifamily $ 3,335 $ 132,852 $ 62,997 $ 31,231 $ 6,901 $ 18,234 $ 255,550 Residential: first lien Pass $ 61,506 $ 89,814 $ 58,393 $ 47,861 $ 39,298 $ 100,671 $ 397,543 Watch List - Substandard — 999 — 101 — — 1,100 Watch List - Doubtful — — 83 — — 123 206 Total Residential: first lien $ 61,506 $ 90,813 $ 58,476 $ 47,962 $ 39,298 $ 100,794 $ 398,849 Residential: junior lien Pass $ 19,714 $ 128,627 $ 110,051 $ 50,272 $ 26,346 $ 106,514 $ 441,524 Total Residential: junior lien $ 19,714 $ 128,627 $ 110,051 $ 50,272 $ 26,346 $ 106,514 $ 441,524 Residential: junior lien Consumer Pass $ 9,251 $ 25,436 $ 3,552 $ 985 $ 137 $ 1,658 $ 41,019 Total Consumer $ 9,251 $ 25,436 $ 3,552 $ 985 $ 137 $ 1,658 $ 41,019 Foreign Pass $ 39,094 $ 71,591 $ 16,628 $ 6,359 $ 6,133 $ 5,667 $ 145,472 Total Foreign $ 39,094 $ 71,591 $ 16,628 $ 6,359 $ 6,133 $ 5,667 $ 145,472 Total Loans $ 766,572 $ 3,147,446 $ 1,317,377 $ 787,224 $ 571,853 $ 457,805 $ 7,048,277 2021 2020 2019 2018 2017 Prior Total (Dollars in Thousands) Balance at December 31, 2021 Domestic Commercial Pass $ 1,041,763 $ 167,691 $ 77,579 $ 58,439 $ 37,104 $ 5,144 $ 1,387,720 Special Review 74,559 497 139 81 — — 75,276 Watch List - Pass 33,920 — — — — 10 33,930 Watch List - Substandard 3,581 273 716 57 — 1 4,628 Watch List - Doubtful 224 — — — 74 — 298 Total Commercial $ 1,154,047 $ 168,461 $ 78,434 $ 58,577 $ 37,178 $ 5,155 $ 1,501,852 Commercial Commercial real estate: other construction & land development Pass $ 966,946 $ 312,389 $ 308,673 $ 37,124 $ 16,642 $ 2,439 $ 1,644,213 Special Review — — 211 — — — 211 Watch List - Pass — 23,100 — — — — 23,100 Watch List - Doubtful 485 104 — — — — 589 Total Commercial real estate: other construction & land development $ 967,431 $ 335,593 $ 308,884 $ 37,124 $ 16,642 $ 2,439 $ 1,668,113 Commercial real estate: farmland & commercial Pass $ 1,001,335 $ 680,777 $ 288,333 $ 417,353 $ 96,096 $ 97,119 $ 2,581,013 Special Review 929 1,292 — 3,448 61 — 5,730 Watch List - Pass 18,790 44,059 — — 94 1 62,944 Watch List - Substandard — 54,097 3,899 — 2,355 456 60,807 Watch List - Doubtful — 224 337 — — 1 562 Total Commercial real estate: farmland & commercial $ 1,021,054 $ 780,449 $ 292,569 $ 420,801 $ 98,606 $ 97,577 $ 2,711,056 Commercial real estate: multifamily Pass $ 133,152 $ 40,766 $ 78,609 $ 10,632 $ 14,217 $ 7,029 $ 284,405 Watch List - Doubtful — 131 — — — — 131 Total Commercial real estate: multifamily $ 133,152 $ 40,897 $ 78,609 $ 10,632 $ 14,217 $ 7,029 $ 284,536 Residential: first lien Pass $ 128,742 $ 52,725 $ 57,249 $ 49,259 $ 29,477 $ 85,838 $ 403,290 Watch List - Substandard 56 — 103 — 122 — 281 Watch List - Doubtful — 87 — — — — 87 Total Residential: first lien $ 128,798 $ 52,812 $ 57,352 $ 49,259 $ 29,599 $ 85,838 $ 403,658 Residential: junior lien Pass $ 130,629 $ 123,062 $ 59,113 $ 30,603 $ 40,855 $ 79,911 $ 464,173 Total Residential: junior lien $ 130,629 $ 123,062 $ 59,113 $ 30,603 $ 40,855 $ 79,911 $ 464,173 Consumer Pass $ 32,053 $ 5,693 $ 1,370 $ 189 $ 9 $ 1,652 $ 40,966 Total Consumer $ 32,053 $ 5,693 $ 1,370 $ 189 $ 9 $ 1,652 $ 40,966 Foreign Pass $ 74,811 $ 33,360 $ 9,223 $ 8,852 $ 4,790 $ 3,761 $ 134,797 Total Foreign $ 74,811 $ 33,360 $ 9,223 $ 8,852 $ 4,790 $ 3,761 $ 134,797 Total Loans $ 3,641,975 $ 1,540,327 $ 885,554 $ 616,037 $ 241,896 $ 283,362 $ 7,209,151

Stock Options

Stock Options	3 Months Ended
Stock Options	Mar. 31, 2022
Stock Options
Stock Options	Note 5 — Stock Options On April 5, 2012, the Board of Directors adopted the 2012 International Bancshares Corporation Stock Option Plan (the “2012 Plan”). There are 800,000 shares of common stock available for stock option grants under the 2012 Plan, which may be qualified incentive stock options (“ISOs”) or non-qualified stock options. Options granted may be exercisable for a period of up to 10 years from the date of grant, excluding ISOs granted to 10% shareholders, which may be exercisable for a period of up to only five years . As of March 31, 2022, 5,628 shares were available for future grants under the 2012 Plan. On April 18, 2022, the Board of Directors adopted the 2022 International Bancshares Corporation Stock Appreciation Rights Plan (the “SAR Plan”). There are 750,000 shares of underlying common stock that may be used for stock appreciation rights (“SAR”) grants under the plan, however, no actual shares will be granted. Upon exercise the SAR will be settled in cash. SARs granted may be exercisable for a period of up to 10 years from the date of grant. No SARs had been issued under the plan as of May 2, 2022. A summary of option activity under the stock option plan for the three months ended March 31, 2022 is as follows: Weighted Weighted average average remaining Aggregate Number of exercise contractual intrinsic options price term (years) value ($) (in Thousands) Options outstanding at December 31, 2021 520,551 $ 28.28 Plus: Options granted 31,150 38.92 Less: Options exercised 6,337 23.22 Options expired — — Options forfeited 6,100 32.90 Options outstanding at March 31, 2022 539,264 $ 28.90 4.56 $ 7,175 Options fully vested and exercisable at March 31, 2022 286,828 $ 23.29 2.49 $ 5,428 Stock-based compensation expense included in the consolidated statements of income for the three months ended March 31, 2022 and March 31, 2021 was $121,000 and $159,000 , respectively. As of March 31, 2022, there was approximately $1,089,000 of total unrecognized stock-based compensation cost related to non-vested options granted under our plans that will be recognized over a weighted average period of 2.0 years.

Investment Securities, Equity S

Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments	3 Months Ended
	Mar. 31, 2022
Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments
Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments	Note 6 — Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments We classify debt securities into one of three categories: held-to-maturity, available-for-sale, or trading. Such debt securities are reassessed for appropriate classification at each reporting date. Securities classified as “held-to-maturity” are carried at amortized cost for financial statement reporting, while securities classified as “available-for-sale” and “trading” are carried at their fair value. Unrealized holding gains and losses are included in net income for those securities classified as “trading,” while unrealized holding gains and losses related to those securities classified as “available-for-sale” are excluded from net income and reported net of tax as other comprehensive income (loss) and accumulated other comprehensive income (loss) until realized, or in the case of losses, when deemed other than temporary. Available-for-sale and held-to-maturity debt securities in an unrealized loss position are evaluated for the underlying cause of the loss. In the event that the deterioration in value is attributable to credit related reasons, then the amount of credit-related impairment will be recorded as a charge to our ACL with subsequent changes in the amount of impairment, up or down, also recorded through our ACL. We have evaluated the debt securities classified as available-for-sale and held-to-maturity at March 31, 2022 and have determined that no debt securities in an unrealized loss position are arising from credit related reasons and have therefore not recorded any allowances for debt securities in our ACL for the period. Unrealized gains and losses related to equity securities with readily determinable fair values are included in net income. The amortized cost and estimated fair value by type of investment security at March 31, 2022 are as follows: Held to Maturity Gross Gross Amortized unrealized unrealized Estimated Carrying cost gains losses fair value value (Dollars in Thousands) Other securities $ 3,400 $ — $ — $ 3,400 $ 3,400 Total investment securities $ 3,400 $ — $ — $ 3,400 $ 3,400 Available for Sale Debt Securities Gross Gross Amortized unrealized unrealized Estimated Carrying cost gains losses fair value value (1) (Dollars in Thousands) U.S. Treasury securities $ 49,099 $ — $ — $ 49,099 $ 49,099 Residential mortgage-backed securities 4,313,749 2,133 (265,529) 4,050,353 4,050,353 Obligations of states and political subdivisions 41,454 1,091 — 42,545 42,545 Total investment securities $ 4,404,302 $ 3,224 $ (265,529) $ 4,141,997 $ 4,141,997 (1) Included in the carrying value of residential mortgage-backed securities are $734,878 of mortgage-backed securities issued by Ginnie Mae and $3,315,475 of mortgage-backed securities issued by Fannie Mae and Freddie Mac. The amortized cost and estimated fair value by type of investment security at December 31, 2021 are as follows: Held to Maturity Gross Gross Amortized unrealized unrealized Estimated Carrying cost gains losses fair value value (Dollars in Thousands) Other securities $ 3,400 $ — $ — $ 3,400 $ 3,400 Total investment securities $ 3,400 $ — $ — $ 3,400 $ 3,400 Available for Sale Gross Gross Estimated Amortized unrealized unrealized fair Carrying cost gains losses value value (1) (Dollars in Thousands) Residential mortgage-backed securities $ 4,213,441 $ 14,159 $ (58,237) $ 4,169,363 $ 4,169,363 Obligations of states and political subdivisions 41,519 3,038 — 44,557 44,557 Total investment securities $ 4,254,960 $ 17,197 $ (58,237) $ 4,213,920 $ 4,213,920 (1) Included in the carrying value of residential mortgage-backed securities are $824,474 of mortgage-backed securities issued by Ginnie Mae and $3,344,899 of mortgage-backed securities issued by Fannie Mae and Freddie. The amortized cost and estimated fair value of investment securities at March 31, 2022, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties. Held to Maturity Available for Sale Amortized Estimated Amortized Estimated Cost fair value Cost fair value (Dollars in Thousands) Due in one year or less $ 2,325 $ 2,325 $ — $ — Due after one year through five years 1,075 1,075 49,099 49,099 Due after five years through ten years — — — — Due after ten years — — 41,454 42,545 Residential mortgage-backed securities — — 4,313,749 4,050,353 Total investment securities $ 3,400 $ 3,400 $ 4,404,302 $ 4,141,997 Residential mortgage-backed securities are securities primarily issued by the Federal Home Loan Mortgage Corporation (“Freddie Mac”), Federal National Mortgage Association (“Fannie Mae”), or the Government National Mortgage Association (“Ginnie Mae”). Investments in residential mortgage-backed securities issued by Ginnie Mae are fully guaranteed by the U.S. Government. Investments in residential mortgage-backed securities issued by Freddie Mac and Fannie Mae are not fully guaranteed by the U.S. Government, however, we believe that the quality of the bonds is similar to other AAA rated bonds with limited credit risk, particularly given the placement of Fannie Mae and Freddie Mac into conservatorship by the federal government in early September 2008 and because securities issued by others that are collateralized by residential mortgage-backed securities issued by Fannie Mae or Freddie Mac are rated consistently as AAA rated securities. The amortized cost and fair value of available-for-sale debt investment securities pledged to qualify for fiduciary powers, to secure public monies as required by law, repurchase agreements and short-term fixed borrowings was $1,517,343,000 and $1,405,511,000, respectively, at March 31, 2022. Proceeds from the sale and calls of debt securities available-for-sale were $0 for the three months ended March 31, 2022, which included $0 of mortgage-backed securities. Gross gains of $0 and gross losses of $0 were realized on the sales and calls for the three months ended March 31, 2022. Proceeds from the sale and call of debt securities available-for-sale were $2,510,000 for the three months ended March 31, 2021, which included $0 of mortgage-backed securities. Gross gains of $0 and gross losses of $4 were realized on the sales and calls for the three months ended March 31, 2021, respectively. Gross unrealized losses on debt investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual debt securities have been in a continuous unrealized loss position at March 31, 2022, were as follows: Less than 12 months 12 months or more Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses (Dollars in Thousands) Available for sale: Residential mortgage-backed securities $ 3,181,601 $ (237,429) $ 515,872 $ (28,100) $ 3,697,473 $ (265,529) $ 3,181,601 $ (237,429) $ 515,872 $ (28,100) $ 3,697,473 $ (265,529) Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2021 were as follows: Less than 12 months 12 months or more Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses (Dollars in Thousands) Available for sale: Residential mortgage-backed securities $ 3,037,188 $ (53,060) $ 423,733 $ (5,177) $ 3,460,921 $ (58,237) $ 3,037,188 $ (53,060) $ 423,733 $ (5,177) $ 3,460,921 $ (58,237) The unrealized losses on investments in residential mortgage-backed securities are primarily caused by changes in market interest rates. We have no intent to sell and will more than likely not be required to sell before a market price recovery or maturity of the securities; therefore, it is our conclusion that the investments in residential mortgage-backed securities issued by Freddie Mac, Fannie Mae and Ginnie Mae are not considered other-than-temporarily impaired. Equity securities with readily determinable fair values consist primarily of Community Reinvestment Act funds. At March 31, 2022 and December 31, 2021, the balance in equity securities with readily determinable fair values recorded at fair value were $5,810,000 and $6,079,000 , respectively. The following is a summary of unrealized and realized gains and losses recognized in net income on equity securities during the three months ended March 31, 2022 and the three months ended March 31, 2021: Three Months Ended March 31, 2022 (Dollars in Thousands) Net losses recognized during the period on equity securities $ (269) Less: Net gains and (losses) recognized during the period on equity securities sold during the period — Unrealized losses recognized during the reporting period on equity securities still held at the reporting date $ (269) Three Months Ended March 31, 2021 (Dollars in Thousands) Net losses recognized during the period on equity securities $ (77) Less: Net gains and (losses) recognized during the period on equity securities sold during the period — Unrealized losses recognized during the reporting period on equity securities still held at the reporting date $ (77) Other investments include equity and merchant banking investments held by our subsidiary banks and non-banking entities. We hold ownership interests in limited partnerships for the purpose of investing in low-income housing tax credit (“LIHTC”) projects. The partnerships may acquire, construct or rehabilitate housing for low- and moderate-income individuals. We realize a return primarily from federal tax credits and other federal tax deductions associated with the underlying projects. We are a limited partner in the partnerships, and not required to consolidate the entities in our consolidated financial statements. Investments in LIHTC projects totaled at December 31, 2021, and are included in other investments on the consolidated financial statements. Unfunded commitments to LIHTC projects totaled

Other Borrowed Funds

Other Borrowed Funds	3 Months Ended
Other Borrowed Funds	Mar. 31, 2022
Other Borrowed Funds
Other Borrowed Funds	Note 7 — Other Borrowed Funds Other borrowed funds include FHLB borrowings, which are short-term and long-term borrowings issued by the FHLB of Dallas and the FHLB of Topeka at the market price offered at the time of funding. These borrowings are secured by residential mortgage-backed investment securities and a portion of our loan portfolio. At March 31, 2022, other borrowed funds totaled $436,090,000, a decrease of less than .1% from $436,138,000 at December 31, 2021.

Junior Subordinated Deferrable

Junior Subordinated Deferrable Interest Debentures	3 Months Ended
Junior Subordinated Deferrable Interest Debentures	Mar. 31, 2022
Junior Subordinated Deferrable Interest Debentures
Junior Subordinated Interest Deferrable Debentures	Note 8 — Junior Subordinated Interest Deferrable Debentures As of March 31, 2022, we have five statutory business trusts under the laws of the State of Delaware, for the purpose of issuing trust preferred securities. The five statutory business trusts we formed (the “Trusts”) have each issued Capital and Common Securities and invested the proceeds thereof in an equivalent amount of junior subordinated debentures (“Debentures”) that we issued. As of March 31, 2022 and December 31, 2021, the principal amount of Debentures outstanding totaled $134,642,000. The Debentures are subordinated and junior in right of payment to all present and future senior indebtedness (as defined in the respective Indentures) and are pari passu For financial reporting purposes, the Trusts are treated as our investments and not consolidated in our consolidated financial statements. Although the Capital and Common Securities issued by each of the Trusts are not included as a component of shareholders’ equity on the consolidated statement of condition, the Capital and Common Securities are treated as capital for regulatory purposes. Specifically, under applicable regulatory guidelines, the Capital and Common Securities issued by the Trusts qualify as Tier 1 capital up to a maximum of 25 % of Tier 1 capital on an aggregate basis. Any amount that exceeds the 25 % threshold would qualify as Tier 2 capital. At March 31, 2022 and December 31, 2021, the total $ The following table illustrates key information about each of the Capital and Common Securities and their interest rate at March 31, 2022: Junior Subordinated Deferrable Interest Repricing Interest Interest Optional Debentures Frequency Rate Rate Index(1) Maturity Date Redemption Date (1) (Dollars in Thousands) Trust VIII $ 25,774 Quarterly 3.29 % LIBOR + 3.05 October 2033 October 2008 Trust IX 41,238 Quarterly 1.83 % LIBOR + 1.62 October 2036 October 2011 Trust X 21,021 Quarterly 1.97 % LIBOR + 1.65 February 2037 February 2012 Trust XI 25,990 Quarterly 1.83 % LIBOR + 1.62 July 2037 July 2012 Trust XII 20,619 Quarterly 1.97 % LIBOR + 1.45 September 2037 September 2012 $ 134,642 (1) The Capital and Common Securities may be redeemed in whole or in part on any interest payment date after the Optional Redemption Date.

Common Stock and Dividends

Common Stock and Dividends	3 Months Ended
Common Stock and Dividends	Mar. 31, 2022
Common Stock and Dividends
Common Stock and Dividends	Note 9 — Common Stock and Dividends We paid cash dividends of $.60 per share on February 28, 2022 to record holders of our common stock on February 15, 2022. We paid cash dividends of $.60 on February 17, 2021, to record holders of our common Stock on February 5, 2021. In April 2009, the Board of Directors re-established a formal stock repurchase program that authorized the repurchase of up to $40 million of common stock within the following 12 months . Annually since then, including on February 23, 2022, the Board of Directors extended and increased the repurchase program to purchase up to $150 million of common stock during the 12-month period commencing on March 15, 2022. Shares of common stock may be purchased from time to time on the open market or through privately negotiated transactions. Shares purchased in this program will be held in treasury for reissue for various corporate purposes, including employee compensation plans. During the first quarter of 2022, the Board of Directors adopted a Rule 10b5-1 trading plan, and intends to adopt additional Rule 10b5-1 trading plans, that will allow us to purchase shares of our common stock during certain trading blackout periods when we ordinarily would not be in the market due to trading restrictions in our insider trading policy. During the term of a Rule 10b5-1 trading plan, purchases of common stock are automatic to the extent the conditions of the plan’s trading instructions are met. Shares purchased under the Rule 10b5-1 trading plan will be held in treasury for reissue for various corporate purposes, including employee stock compensation plans. As of May 2, 2022, a

Commitments and Contingent Liab

Commitments and Contingent Liabilities and Other Matters	3 Months Ended
Commitments and Contingent Liabilities and Other Matters	Mar. 31, 2022
Commitments, Contingent Liabilities and Other Matters
Commitments, Contingent Liabilities and Other Matters	Note 10 — Commitments and Contingent Liabilities and Other Tax Matters We are involved in various legal proceedings that are in various stages of litigation. We have determined, based on discussions with its counsel, that any material loss in such actions, individually or in the aggregate, is remote or the damages sought, even if fully recovered, would not be considered material to our consolidated financial position or results of operations. However, many of these matters are in various stages of proceedings and further developments could cause management to revise its assessment of these matters.

Capital Requirements

Capital Requirements	3 Months Ended
Capital Requirements	Mar. 31, 2022
Capital Requirements
Capital Requirements	Note 11 — Capital Ratios Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amount and classifications are also subject to qualitative judgements by regulators about components, risk-weighting and other factors. In July 2013, the Federal Deposit Insurance Corporation (“FDIC”) and other regulatory bodies established a new, comprehensive capital framework for U.S. banking organizations, consisting of minimum requirements that increase both the quantity and quality of capital held by banking organizations. The final rules are a result of the implementation of the BASEL III capital reforms and various Dodd-Frank Wall Street Reform and Consumer Protection Act (“Dodd Frank”) related capital provisions. Consistent with the Basel international framework, the rules include a minimum ratio of Common Equity Tier 1 (“CET1”) to risk-weighted assets of 4.5% and a CET1 capital conservation buffer of 2.5% of risk-weighted assets. The capital conservation buffer began phasing-in on January 1, 2016 at .625% and increased each year until January 1, 2019, when we were required to have a 2.5% capital conservation buffer, effectively resulting in a minimum ratio of CET1 capital to risk-weighted assets of at least 7% upon full implementation. The rules also raised the minimum ratio of Tier 1 capital to risk-weighted assets from 4% to 6% and include a minimum leverage ratio of 4% for all banking organizations. Regarding the quality of capital, the rules emphasize CET1 capital and implements strict eligibility criteria for regulatory capital instruments. The rules also improve the methodology for calculating risk-weighted assets to enhance risk sensitivity. The rules were subject to a four-year phase in period for mandatory compliance and we were required to begin to phase in the rules beginning on January 1, 2015. We believe that as of March 31, 2022, we continue to meet all fully phased-in capital adequacy requirements. On November 21, 2017, the OCC, the Federal Reserve and the FDIC finalized a proposed rule that extends the current treatment under the regulatory capital rules for certain regulatory capital deductions and risk weights and certain minority interest requirements, as they apply to banking organizations that are not subject to the advanced approaches capital rules. Effective January 1, 2018, the rule also paused the full transition to the Basel III treatment of mortgage servicing assets, certain deferred tax assets, investments in the capital of unconsolidated financial institutions and minority interests. The agencies are also considering whether to make adjustments to the capital rules in response to CECL (the FASB Standard relating to current expected credit loss) and its potential impact on regulatory capital. On December 7, 2017, the Basel Committee on Banking Supervision unveiled the latest round of its regulatory capital framework, commonly called “Basel IV.” The framework makes changes to the capital framework first introduced as “Basel III” in 2010. The committee targeted 2022-2027 as the timeframe for implementation by regulators in individual countries, including the U.S. federal bank regulatory agencies (after notice and comment). On May 24, 2018, the EGRRCPA was enacted and, among other things, it includes a simplified capital rule change which effectively exempts banks with assets of less than $10 billion that exceed the “community bank leverage ratio,” from all risk-based capital requirements, including Basel III and its predecessors. The federal banking agencies must establish the “community bank leverage ratio” (a ratio of tangible equity to average consolidated assets) between 8% and 10% before community banks can begin to take advantage of this regulatory relief provision. Some of the Subsidiary Banks, with assets of less than $10 billion, may qualify for this exemption. Additionally, under the EGRRCPA, qualified bank holding companies with assets of up to $3 billion (currently $1 billion) will be eligible for the Federal Reserve’s Small Bank Holding Company Policy Statement, which eases limitations on the issuance of debt by holding companies. On August 28, 2018, the Federal Reserve issued an interim final rule expanding the applicability of its Small Bank Holding Company Policy Statement. While holding companies that meet the conditions of the policy statement are excluded from consolidated capital requirements, their depository institutions continue to be subject to minimum capital requirements. Finally, for banks that continue to be subject to the risk-based capital rules of Basel III (e.g., 150%), certain commercial real estate loans that were formally classified as high volatility commercial real estate 31 (“HVCRE”) will not be subject to heightened risk weights if they meet certain criteria. Also, while acquisition, development, and construction (“ADC”) loans will generally be subject to heightened risk weights, certain exceptions will apply. On September 18, 2018, the federal banking agencies issued a proposed rule modifying the agencies’ capital rules for HVCRE. We had a CET1 to risk-weighted assets ratio of 20.06% on March 31, 2022 and 20.47 % on December 31, 2021. We had a Tier 1 capital-to-average-total-asset (leverage) ratio of 13.87% and 13.94%, risk-weighted Tier 1 capital ratio of 21.12% and 21.59% and risk-weighted total capital ratio of 22.24% and 22.73 % at March 31, 2022 and December 31, 2021, respectively. Our CET1 capital consists of common stock and related surplus, net of treasury stock, and retained earnings. We and our Subsidiary Banks elected to opt-out of the requirement to include most components of accumulated other comprehensive income (loss) in the calculation of CET1 capital. CET1 is reduced by goodwill and other intangible assets, net of associated deferred tax liabilities and subject to transition provisions. Tier 1 capital includes CET1 capital and additional Tier 1 capital. Additional Tier 1 capital includes the Capital and Common Securities issued by the Trusts (see Note 8 above) up to a maximum of 25 % of Tier 1 capital on an aggregate basis. Any amount that exceeds the 25 % threshold qualifies as Tier 2 capital. As of March 31, 2022, the total of $134,642,000 of the Capital and Common Securities outstanding qualified as Tier 1 capital. We actively monitor the regulatory capital ratios to ensure that our Subsidiary Banks are well-capitalized under the regulatory framework. The CET1, Tier 1 and Total capital ratios are calculated by dividing the respective capital amounts by risk-weighted assets. Risk-weighted assets are calculated based on regulatory requirements and include total assets, excluding goodwill and other intangible assets, allocated by risk-weight category, and certain off-balance-sheet items, among other things. The leverage ratio is calculated by dividing Tier 1 capital by adjusted quarterly average total assets, which exclude goodwill and other intangible assets, among other things. We and our Subsidiary Banks are subject to the regulatory capital requirements administered by the Federal Reserve, and, for our Subsidiary Banks, the FDIC. Regulatory authorities can initiate certain mandatory actions if we or any of our Subsidiary Banks fail to meet the minimum capital requirements, which could have a direct material effect on our financial statements. Management believes, as of March 31, 2022, that we and each of our Subsidiary Banks meet all capital adequacy requirements to which we are subject.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
Fair Value Measurements (Tables)	Mar. 31, 2022
Fair Value Measurements
Assets and liabilities measured at fair value on a recurring basis	The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of March 31, 2022 by level within the fair value measurement hierarchy: Fair Value Measurements at Reporting Date Using (in Thousands) Quoted Prices in Active Significant Assets/Liabilities Markets for Other Significant Measured at Identical Observable Unobservable Fair Value Assets Inputs Inputs March 31, 2022 (Level 1) (Level 2) (Level 3) Measured on a recurring basis: Assets: Available for sale debt securities U.S. Treasury securities $ 49,099 $ — $ 49,099 $ — Residential mortgage-backed securities 4,050,353 — 4,050,353 — States and political subdivisions 42,545 — 42,545 — Equity Securities 5,810 5,810 — — $ 4,147,807 $ 5,810 $ 4,141,997 $ — The following table represents assets and liabilities reported on the consolidated balance sheets at their fair value on a recurring basis as of December 31, 2021 by level within the fair value measurement hierarchy: Fair Value Measurements at Reporting Date Using (in Thousands) Quoted Prices in Active Significant Assets/Liabilities Markets for Other Significant Measured at Identical Observable Unobservable Fair Value Assets Inputs Inputs December 31, 2021 (Level 1) (Level 2) (Level 3) Measured on a recurring basis: Assets: Available for sale securities Residential mortgage - backed securities $ 4,169,363 $ — $ 4,169,363 $ — States and political subdivisions 44,557 — 44,557 — Equity Securities 6,079 6,079 — — $ 4,219,999 $ 6,079 $ 4,213,920 $ —
Assets measured at fair value on a non-recurring basis	The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended March 31, 2022 by level within the fair value measurement hierarchy: Fair Value Measurements at Reporting Date Using (in thousands) Quoted Assets/Liabilities Prices in Measured at Active Significant Fair Value Markets for Other Significant Net Provision Period ended Identical Observable Unobservable (Credit) March 31, Assets Inputs Inputs During 2022 (Level 1) (Level 2) (Level 3) Period Measured on a non-recurring basis: Assets: Watch-List doubtful loans $ — $ — $ — $ — $ — Other real estate owned $ — $ — $ — $ — $ — The following table represents financial instruments measured at fair value on a non-recurring basis as of and for the period ended December 31, 2021 by level within the fair value measurement hierarchy: Fair Value Measurements at Reporting Date Using (in thousands) Quoted Assets/Liabilities Prices in Measured at Active Significant Fair Value Markets Other Significant Net (Credit) Year ended for Identical Observable Unobservable Provision December 31, Assets Inputs Inputs During 2021 (Level 1) (Level 2) (Level 3) Period Measured on a non-recurring basis: Assets: Watch-List doubtful loans $ 55 $ — $ — $ 55 $ 209 Other real estate owned 18,095 — — 18,095 2,655

Loans (Tables)

Loans (Tables)	3 Months Ended
Loans (Tables)	Mar. 31, 2022
Loans
Summary of loans, by loan type	March 31, December 31, 2022 2021 (Dollars in Thousands) Commercial, financial and agricultural $ 4,278,715 $ 4,497,444 Real estate - mortgage 840,373 867,831 Real estate - construction 1,742,698 1,668,113 Consumer 41,019 40,966 Foreign 145,472 134,797 Total loans $ 7,048,277 $ 7,209,151

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	3 Months Ended
Allowance for Credit Losses (Tables)	Mar. 31, 2022
Allowance for Credit Losses
Loans individually or collectively evaluated for their impairment and related allowance, by loan class	Three Months Ended March 31, 2022 Domestic Foreign Commercial Real Estate: Other Commercial Construction & Real Estate: Commercial Land Farmland & Real Estate: Residential: Residential: Commercial Development Commercial Multifamily First Lien Junior Lien Consumer Foreign Total (Dollars in Thousands) Balance at December 31, 2021 $ 23,178 $ 35,390 $ 35,654 $ 3,291 $ 4,073 $ 7,754 $ 272 $ 762 $ 110,374 Losses charged to allowance (2,112) (2) — — (99) (28) (88) — (2,329) Recoveries credited to allowance 602 2 8 — 30 48 11 — 701 Net (losses) recoveries charged to allowance (1,510) — 8 — (69) 20 (77) — (1,628) Credit loss expense 2,233 982 (808) (229) 12 (728) 69 (50) 1,481 Balance at March 31, 2022 $ 23,901 $ 36,372 $ 34,854 $ 3,062 $ 4,016 $ 7,046 $ 264 $ 712 $ 110,227 Three Months Ended March 31, 2021 Domestic Foreign Commercial Real Estate: Other Commercial Construction & Real Estate: Commercial Land Farmland & Real Estate: Residential: Residential: Commercial Development Commercial Multifamily First Lien Junior Lien Consumer Foreign Total (Dollars in Thousands) Balance at December 31, 2020 $ 21,908 $ 37,612 $ 30,000 $ 5,051 $ 3,874 $ 9,570 $ 291 $ 753 $ 109,059 Losses charged to allowance (1,893) — (356) — (72) — (32) — (2,353) Recoveries credited to allowance 458 — 12 — 11 21 8 — 510 Net (losses) recoveries charged to allowance (1,435) — (344) — (61) 21 (24) — (1,843) Credit loss expense 1,690 (3,206) 2,547 884 104 (855) 12 16 1,192 Balance at March 31, 2021 $ 22,163 $ 34,406 $ 32,203 $ 5,935 $ 3,917 $ 8,736 $ 279 $ 769 $ 108,408 March 31, 2022 Loans Individually Loans Collectively Evaluated For Evaluated For Impairment Impairment Recorded Recorded Investment Allowance Investment Allowance (Dollars in Thousands) Domestic Commercial $ 263 $ 29 $ 1,461,358 $ 23,872 Commercial real estate: other construction & land development 567 70 1,742,131 36,302 Commercial real estate: farmland & commercial 554 — 2,560,990 34,854 Commercial real estate: multifamily 123 — 255,427 3,062 Residential: first lien 207 — 398,642 4,016 Residential: junior lien — — 441,524 7,046 Consumer — — 41,019 264 Foreign — — 145,472 712 Total $ 1,714 $ 99 $ 7,046,563 $ 110,128 December 31, 2021 Loans Individually Loans Collectively Evaluated For Evaluated For Impairment Impairment Recorded Recorded Investment Allowance Investment Allowance (Dollars in Thousands) Domestic Commercial $ 298 $ 29 $ 1,501,554 $ 23,149 Commercial real estate: other construction & land development 589 70 1,667,524 35,320 Commercial real estate: farmland & commercial 562 — 2,710,494 35,654 Commercial real estate: multifamily 131 — 284,405 3,291 Residential: first lien 87 — 403,571 4,073 Residential: junior lien — — 464,173 7,754 Consumer — — 40,966 272 Foreign — — 134,797 762 Total $ 1,667 $ 99 $ 7,207,484 $ 110,275
Loans accounted on non-accrual basis, by loan class	March 31, 2022 December 31, 2021 (Dollars in Thousands) Domestic Commercial $ 263 $ 298 Commercial real estate: other construction & land development 567 589 Commercial real estate: farmland & commercial 554 562 Commercial real estate: multifamily 123 131 Residential: first lien 423 341 Total non-accrual loans $ 1,930 $ 1,921
Loans accounted for as trouble debt restructuring, by loan class	March 31, 2022 December 31, 2021 (Dollars in Thousands) Domestic Residential: first lien $ 1,815 $ 2,254 Residential: junior lien 104 105 Consumer 831 878 Foreign 61 16 Total troubled debt restructuring $ 2,811 $ 3,253
Information regarding the aging of past due loans, by loan class	March 31, 2022 90 Days or Total 30 - 59 60 - 89 90 Days or greater & Past Total Days Days Greater still accruing Due Current Portfolio (Dollars in Thousands) Domestic Commercial $ 2,160 $ 261 $ 442 $ 442 $ 2,863 $ 1,458,757 $ 1,461,620 Commercial real estate: other construction & land development 1,302 39 536 536 1,877 1,740,821 1,742,698 Commercial real estate: farmland & commercial 2,973 1,384 337 — 4,694 2,556,851 2,561,545 Commercial real estate: multifamily 10 — — — 10 255,540 255,550 Residential: first lien 2,541 693 5,164 4,887 8,398 390,451 398,849 Residential: junior lien 218 420 1,168 1,168 1,806 439,718 441,524 Consumer 243 99 6 6 348 40,671 41,019 Foreign 562 67 215 215 844 144,628 145,472 Total past due loans $ 10,009 $ 2,963 $ 7,868 $ 7,254 $ 20,840 $ 7,027,437 $ 7,048,277 December 31, 2021 90 Days or Total 30 - 59 60 - 89 90 Days or greater & Past Total Days Days Greater still accruing Due Current Portfolio (Dollars in Thousands) Domestic Commercial $ 2,534 $ 303 $ 577 $ 577 $ 3,414 $ 1,498,438 $ 1,501,852 Commercial real estate: other construction & land development 499 334 188 188 1,021 1,667,092 1,668,113 Commercial real estate: farmland & commercial 18,164 172 644 307 18,980 2,692,076 2,711,056 Commercial real estate: multifamily — — — — — 284,536 284,536 Residential: first lien 2,342 1,212 5,129 4,937 8,683 394,975 403,658 Residential: junior lien 747 115 1,055 1,055 1,917 462,256 464,173 Consumer 231 88 4 4 323 40,643 40,966 Foreign 1,319 232 1,574 1,574 3,125 131,672 134,797 Total past due loans $ 25,836 $ 2,456 $ 9,171 $ 8,642 $ 37,463 $ 7,171,688 $ 7,209,151
Summary of the loan portfolio by credit quality indicator, by loan class	2022 2021 2020 2019 2018 Prior Total (Dollars in Thousands) Balance at March 31, 2022 Domestic Commercial Pass $ 157,913 $ 895,087 $ 130,593 $ 69,495 $ 56,082 $ 37,946 $ 1,347,116 Special Review 81 75,098 492 139 — — 75,810 Watch List - Pass 29,841 7,087 — 807 — — 37,735 Watch List - Substandard — 324 316 — 56 — 696 Watch List - Doubtful — 206 — — — 57 263 Total Commercial $ 187,835 $ 977,802 $ 131,401 $ 70,441 $ 56,138 $ 38,003 $ 1,461,620 Commercial real estate: other construction & land development Pass $ 170,274 $ 996,912 $ 206,608 $ 295,325 $ 33,305 $ 16,189 $ 1,718,613 Special Review — — — 211 — — 211 Watch List - Pass — — 23,100 — — — 23,100 Watch List - Substandard — 207 — — — — 207 Watch List - Doubtful — 465 102 — — — 567 Total Commercial real estate: other construction & land development $ 170,274 $ 997,584 $ 229,810 $ 295,536 $ 33,305 $ 16,189 $ 1,742,698 Commercial real estate: farmland & commercial Pass $ 220,689 $ 721,404 $ 639,609 $ 280,518 $ 403,252 $ 167,803 $ 2,433,275 Special Review 2,984 1,077 1,272 — 343 60 5,736 Watch List - Pass 51,890 260 9,312 — — 92 61,554 Watch List - Substandard — — 54,053 3,583 — 2,790 60,426 Watch List - Doubtful — — 216 337 — 1 554 Total Commercial real estate: farmland & commercial $ 275,563 $ 722,741 $ 704,462 $ 284,438 $ 403,595 $ 170,746 $ 2,561,545 Commercial real estate: multifamily Pass $ 3,335 $ 132,852 $ 62,874 $ 31,231 $ 6,901 $ 18,234 $ 255,427 Watch List - Doubtful — — 123 — — — 123 Total Commercial real estate: multifamily $ 3,335 $ 132,852 $ 62,997 $ 31,231 $ 6,901 $ 18,234 $ 255,550 Residential: first lien Pass $ 61,506 $ 89,814 $ 58,393 $ 47,861 $ 39,298 $ 100,671 $ 397,543 Watch List - Substandard — 999 — 101 — — 1,100 Watch List - Doubtful — — 83 — — 123 206 Total Residential: first lien $ 61,506 $ 90,813 $ 58,476 $ 47,962 $ 39,298 $ 100,794 $ 398,849 Residential: junior lien Pass $ 19,714 $ 128,627 $ 110,051 $ 50,272 $ 26,346 $ 106,514 $ 441,524 Total Residential: junior lien $ 19,714 $ 128,627 $ 110,051 $ 50,272 $ 26,346 $ 106,514 $ 441,524 Residential: junior lien Consumer Pass $ 9,251 $ 25,436 $ 3,552 $ 985 $ 137 $ 1,658 $ 41,019 Total Consumer $ 9,251 $ 25,436 $ 3,552 $ 985 $ 137 $ 1,658 $ 41,019 Foreign Pass $ 39,094 $ 71,591 $ 16,628 $ 6,359 $ 6,133 $ 5,667 $ 145,472 Total Foreign $ 39,094 $ 71,591 $ 16,628 $ 6,359 $ 6,133 $ 5,667 $ 145,472 Total Loans $ 766,572 $ 3,147,446 $ 1,317,377 $ 787,224 $ 571,853 $ 457,805 $ 7,048,277 2021 2020 2019 2018 2017 Prior Total (Dollars in Thousands) Balance at December 31, 2021 Domestic Commercial Pass $ 1,041,763 $ 167,691 $ 77,579 $ 58,439 $ 37,104 $ 5,144 $ 1,387,720 Special Review 74,559 497 139 81 — — 75,276 Watch List - Pass 33,920 — — — — 10 33,930 Watch List - Substandard 3,581 273 716 57 — 1 4,628 Watch List - Doubtful 224 — — — 74 — 298 Total Commercial $ 1,154,047 $ 168,461 $ 78,434 $ 58,577 $ 37,178 $ 5,155 $ 1,501,852 Commercial Commercial real estate: other construction & land development Pass $ 966,946 $ 312,389 $ 308,673 $ 37,124 $ 16,642 $ 2,439 $ 1,644,213 Special Review — — 211 — — — 211 Watch List - Pass — 23,100 — — — — 23,100 Watch List - Doubtful 485 104 — — — — 589 Total Commercial real estate: other construction & land development $ 967,431 $ 335,593 $ 308,884 $ 37,124 $ 16,642 $ 2,439 $ 1,668,113 Commercial real estate: farmland & commercial Pass $ 1,001,335 $ 680,777 $ 288,333 $ 417,353 $ 96,096 $ 97,119 $ 2,581,013 Special Review 929 1,292 — 3,448 61 — 5,730 Watch List - Pass 18,790 44,059 — — 94 1 62,944 Watch List - Substandard — 54,097 3,899 — 2,355 456 60,807 Watch List - Doubtful — 224 337 — — 1 562 Total Commercial real estate: farmland & commercial $ 1,021,054 $ 780,449 $ 292,569 $ 420,801 $ 98,606 $ 97,577 $ 2,711,056 Commercial real estate: multifamily Pass $ 133,152 $ 40,766 $ 78,609 $ 10,632 $ 14,217 $ 7,029 $ 284,405 Watch List - Doubtful — 131 — — — — 131 Total Commercial real estate: multifamily $ 133,152 $ 40,897 $ 78,609 $ 10,632 $ 14,217 $ 7,029 $ 284,536 Residential: first lien Pass $ 128,742 $ 52,725 $ 57,249 $ 49,259 $ 29,477 $ 85,838 $ 403,290 Watch List - Substandard 56 — 103 — 122 — 281 Watch List - Doubtful — 87 — — — — 87 Total Residential: first lien $ 128,798 $ 52,812 $ 57,352 $ 49,259 $ 29,599 $ 85,838 $ 403,658 Residential: junior lien Pass $ 130,629 $ 123,062 $ 59,113 $ 30,603 $ 40,855 $ 79,911 $ 464,173 Total Residential: junior lien $ 130,629 $ 123,062 $ 59,113 $ 30,603 $ 40,855 $ 79,911 $ 464,173 Consumer Pass $ 32,053 $ 5,693 $ 1,370 $ 189 $ 9 $ 1,652 $ 40,966 Total Consumer $ 32,053 $ 5,693 $ 1,370 $ 189 $ 9 $ 1,652 $ 40,966 Foreign Pass $ 74,811 $ 33,360 $ 9,223 $ 8,852 $ 4,790 $ 3,761 $ 134,797 Total Foreign $ 74,811 $ 33,360 $ 9,223 $ 8,852 $ 4,790 $ 3,761 $ 134,797 Total Loans $ 3,641,975 $ 1,540,327 $ 885,554 $ 616,037 $ 241,896 $ 283,362 $ 7,209,151

Stock Options (Tables)

Stock Options (Tables)	3 Months Ended
Stock Options (Tables)	Mar. 31, 2022
Stock Options
Summary of option activity under stock option plans	Weighted Weighted average average remaining Aggregate Number of exercise contractual intrinsic options price term (years) value ($) (in Thousands) Options outstanding at December 31, 2021 520,551 $ 28.28 Plus: Options granted 31,150 38.92 Less: Options exercised 6,337 23.22 Options expired — — Options forfeited 6,100 32.90 Options outstanding at March 31, 2022 539,264 $ 28.90 4.56 $ 7,175 Options fully vested and exercisable at March 31, 2022 286,828 $ 23.29 2.49 $ 5,428

Investment Securities, Equity_2

Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Tables)	3 Months Ended
	Mar. 31, 2022
Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments
Amortized cost and estimated fair value by type of investment security	The amortized cost and estimated fair value by type of investment security at March 31, 2022 are as follows: Held to Maturity Gross Gross Amortized unrealized unrealized Estimated Carrying cost gains losses fair value value (Dollars in Thousands) Other securities $ 3,400 $ — $ — $ 3,400 $ 3,400 Total investment securities $ 3,400 $ — $ — $ 3,400 $ 3,400 Available for Sale Debt Securities Gross Gross Amortized unrealized unrealized Estimated Carrying cost gains losses fair value value (1) (Dollars in Thousands) U.S. Treasury securities $ 49,099 $ — $ — $ 49,099 $ 49,099 Residential mortgage-backed securities 4,313,749 2,133 (265,529) 4,050,353 4,050,353 Obligations of states and political subdivisions 41,454 1,091 — 42,545 42,545 Total investment securities $ 4,404,302 $ 3,224 $ (265,529) $ 4,141,997 $ 4,141,997 (1) Included in the carrying value of residential mortgage-backed securities are $734,878 of mortgage-backed securities issued by Ginnie Mae and $3,315,475 of mortgage-backed securities issued by Fannie Mae and Freddie Mac. The amortized cost and estimated fair value by type of investment security at December 31, 2021 are as follows: Held to Maturity Gross Gross Amortized unrealized unrealized Estimated Carrying cost gains losses fair value value (Dollars in Thousands) Other securities $ 3,400 $ — $ — $ 3,400 $ 3,400 Total investment securities $ 3,400 $ — $ — $ 3,400 $ 3,400 Available for Sale Gross Gross Estimated Amortized unrealized unrealized fair Carrying cost gains losses value value (1) (Dollars in Thousands) Residential mortgage-backed securities $ 4,213,441 $ 14,159 $ (58,237) $ 4,169,363 $ 4,169,363 Obligations of states and political subdivisions 41,519 3,038 — 44,557 44,557 Total investment securities $ 4,254,960 $ 17,197 $ (58,237) $ 4,213,920 $ 4,213,920 (1) Included in the carrying value of residential mortgage-backed securities are $824,474 of mortgage-backed securities issued by Ginnie Mae and $3,344,899 of mortgage-backed securities issued by Fannie Mae and Freddie.
Amortized cost and fair value of investment securities, by contractual maturity	Held to Maturity Available for Sale Amortized Estimated Amortized Estimated Cost fair value Cost fair value (Dollars in Thousands) Due in one year or less $ 2,325 $ 2,325 $ — $ — Due after one year through five years 1,075 1,075 49,099 49,099 Due after five years through ten years — — — — Due after ten years — — 41,454 42,545 Residential mortgage-backed securities — — 4,313,749 4,050,353 Total investment securities $ 3,400 $ 3,400 $ 4,404,302 $ 4,141,997
Gross unrealized losses on investment securities and the related fair value	Gross unrealized losses on debt investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual debt securities have been in a continuous unrealized loss position at March 31, 2022, were as follows: Less than 12 months 12 months or more Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses (Dollars in Thousands) Available for sale: Residential mortgage-backed securities $ 3,181,601 $ (237,429) $ 515,872 $ (28,100) $ 3,697,473 $ (265,529) $ 3,181,601 $ (237,429) $ 515,872 $ (28,100) $ 3,697,473 $ (265,529) Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2021 were as follows: Less than 12 months 12 months or more Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses (Dollars in Thousands) Available for sale: Residential mortgage-backed securities $ 3,037,188 $ (53,060) $ 423,733 $ (5,177) $ 3,460,921 $ (58,237) $ 3,037,188 $ (53,060) $ 423,733 $ (5,177) $ 3,460,921 $ (58,237)
Summary of unrealized and realized gains and losses recognized in net income on equity securities	Three Months Ended March 31, 2022 (Dollars in Thousands) Net losses recognized during the period on equity securities $ (269) Less: Net gains and (losses) recognized during the period on equity securities sold during the period — Unrealized losses recognized during the reporting period on equity securities still held at the reporting date $ (269) Three Months Ended March 31, 2021 (Dollars in Thousands) Net losses recognized during the period on equity securities $ (77) Less: Net gains and (losses) recognized during the period on equity securities sold during the period — Unrealized losses recognized during the reporting period on equity securities still held at the reporting date $ (77)

Junior Subordinated Deferrabl_2

Junior Subordinated Deferrable Interest Debentures (Tables)	3 Months Ended
Junior Subordinated Deferrable Interest Debentures (Tables)	Mar. 31, 2022
Junior Subordinated Deferrable Interest Debentures
Junior subordinated interest deferrable debentures, major types of business trusts	Junior Subordinated Deferrable Interest Repricing Interest Interest Optional Debentures Frequency Rate Rate Index(1) Maturity Date Redemption Date (1) (Dollars in Thousands) Trust VIII $ 25,774 Quarterly 3.29 % LIBOR + 3.05 October 2033 October 2008 Trust IX 41,238 Quarterly 1.83 % LIBOR + 1.62 October 2036 October 2011 Trust X 21,021 Quarterly 1.97 % LIBOR + 1.65 February 2037 February 2012 Trust XI 25,990 Quarterly 1.83 % LIBOR + 1.62 July 2037 July 2012 Trust XII 20,619 Quarterly 1.97 % LIBOR + 1.45 September 2037 September 2012 $ 134,642 (1) The Capital and Common Securities may be redeemed in whole or in part on any interest payment date after the Optional Redemption Date.

Basis of Presentation (Details)

Basis of Presentation (Details)	3 Months Ended
Basis of Presentation (Details)	Mar. 31, 2022subsidiarysegment
Basis of Presentation
Number of operating segments \| segment	1
Number of active operating bank subsidiaries \| subsidiary	5

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value By Level) (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Assets:
Available for sale debt securities	$ 4,141,997,000	$ 4,213,920,000
Equity Securities	5,810,000	6,079,000
Estimate of Fair Value Measurement [Member] \| US Treasury Securities
Assets:
Available for sale debt securities	49,099,000
Estimate of Fair Value Measurement [Member] \| Residential Mortgage Backed Securities [Member]
Assets:
Available for sale debt securities	4,050,353,000	4,169,363,000
Estimate of Fair Value Measurement [Member] \| States and Political Subdivisions Debt Securities [Member]
Assets:
Available for sale debt securities	42,545,000	44,557,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member]
Assets:
Equity Securities	5,810,000	6,079,000
Marketable Securities	4,147,807,000	4,219,999,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member] \| US Treasury Securities
Assets:
Available for sale debt securities	49,099,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member] \| Residential Mortgage Backed Securities [Member]
Assets:
Available for sale debt securities	4,050,353,000	4,169,363,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member] \| States and Political Subdivisions Debt Securities [Member]
Assets:
Available for sale debt securities	42,545,000	44,557,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets:
Equity Securities	5,810,000	6,079,000
Marketable Securities	5,810,000	6,079,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets:
Marketable Securities	4,141,997,000	4,213,920,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member] \| US Treasury Securities
Assets:
Available for sale debt securities	49,099,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member] \| Residential Mortgage Backed Securities [Member]
Assets:
Available for sale debt securities	4,050,353,000	4,169,363,000
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member] \| States and Political Subdivisions Debt Securities [Member]
Assets:
Available for sale debt securities	$ 42,545,000	$ 44,557,000

Fair Value Measurements (Fair_2

Fair Value Measurements (Fair Value Measurement and Assumptions) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3
Doubtful and Impaired commercial collateral dependent loans	$ 859,000	$ 993,000
Impaired commercial collateral dependent receivables appraisals to determine fair value within immediately preceding twelve months	0	0
Impaired collateral dependent commercial loans with internal evaluation completed within last twelve months	859,000	896,000
Charges to allowance for probable loan losses in connection with other real estate owned	0	2,000
Adjustment to fair value in connection with other real estate owned	$ 0	2,655,000
Fair Value, Measurements, Nonrecurring [Member]
Assumptions used in discounted cash flow model to determine fair value of investments classified within level 3
Change in net provision, impaired loans		209,000
Change in net provision, other real estate owned		2,655,000
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets:
Watch-List doubtful loans		55,000
Non-financial assets:
Other real estate owned		18,095,000
Fair Value, Measurements, Nonrecurring [Member] \| Estimate of Fair Value Measurement [Member]
Assets:
Watch-List doubtful loans		55,000
Non-financial assets:
Other real estate owned		$ 18,095,000

Fair Value Measurements (Other

Fair Value Measurements (Other Assumptions) (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Deposits
Carrying amount of time deposits	$ 2,196,479,000	$ 2,188,803,000
Fair Value, Inputs, Level 3 [Member]
Loans
Carrying amount of fixed rate performing loans	1,241,754,000	1,363,313,000
Estimated fair value of fixed rate performing loans	1,195,609,000	1,323,223,000
Deposits
Carrying amount of time deposits	2,196,479,000	2,188,803,000
Estimated fair value of time deposits	2,194,923,000	2,186,547,000
Fair Value, Inputs, Level 2 [Member]
Other borrowed funds
Carrying amount of the long-term FHLB borrowings	436,090,000	436,138,000
Estimated fair value of long-term FHLB borrowings	$ 445,162,000	$ 455,187,000

Loans (Details)

Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Summary of loans, by loan type
Total loans	$ 7,048,277	$ 7,209,151
Commercial, financial and agricultural
Summary of loans, by loan type
Total loans	4,278,715	4,497,444
Real estate - mortgage
Summary of loans, by loan type
Total loans	840,373	867,831
Obligations of states and political subdivisions
Summary of loans, by loan type
Total loans	1,742,698	1,668,113
Consumer
Summary of loans, by loan type
Total loans	41,019	40,966
Foreign.
Summary of loans, by loan type
Total loans	$ 145,472	$ 134,797

Allowance for Credit Losses (By

Allowance for Credit Losses (By Loan Class) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Allowance for Credit Losses
Balance at the beginning of the period	$ 110,374	$ 109,059
Losses charged to allowance	(2,329)	(2,353)
Recoveries credited to allowance	701	510
Net (losses) recoveries charged to allowance	(1,628)	(1,843)
Credit loss expense	1,481	1,192
Balance at the end of the period	110,227	108,408
Commercial, financial and agricultural \| Domestic \| Commercial.
Allowance for Credit Losses
Balance at the beginning of the period	23,178	21,908
Losses charged to allowance	(2,112)	(1,893)
Recoveries credited to allowance	602	458
Net (losses) recoveries charged to allowance	(1,510)	(1,435)
Credit loss expense	2,233	1,690
Balance at the end of the period	23,901	22,163
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial
Allowance for Credit Losses
Balance at the beginning of the period	35,654	30,000
Losses charged to allowance		(356)
Recoveries credited to allowance	8	12
Net (losses) recoveries charged to allowance	8	(344)
Credit loss expense	(808)	2,547
Balance at the end of the period	34,854	32,203
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily
Allowance for Credit Losses
Balance at the beginning of the period	3,291	5,051
Credit loss expense	(229)	884
Balance at the end of the period	3,062	5,935
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development
Allowance for Credit Losses
Balance at the beginning of the period	35,390	37,612
Losses charged to allowance	(2)
Recoveries credited to allowance	2
Credit loss expense	982	(3,206)
Balance at the end of the period	36,372	34,406
Real estate - mortgage \| Domestic \| Residential: first lien
Allowance for Credit Losses
Balance at the beginning of the period	4,073	3,874
Losses charged to allowance	(99)	(72)
Recoveries credited to allowance	30	11
Net (losses) recoveries charged to allowance	(69)	(61)
Credit loss expense	12	104
Balance at the end of the period	4,016	3,917
Real estate - mortgage \| Domestic \| Residential Junior Lien
Allowance for Credit Losses
Balance at the beginning of the period	7,754	9,570
Losses charged to allowance	(28)
Recoveries credited to allowance	48	21
Net (losses) recoveries charged to allowance	20	21
Credit loss expense	(728)	(855)
Balance at the end of the period	7,046	8,736
Consumer \| Domestic
Allowance for Credit Losses
Balance at the beginning of the period	272	291
Losses charged to allowance	(88)	(32)
Recoveries credited to allowance	11	8
Net (losses) recoveries charged to allowance	(77)	(24)
Credit loss expense	69	12
Balance at the end of the period	264	279
Foreign. \| Foreign
Allowance for Credit Losses
Balance at the beginning of the period	762	753
Credit loss expense	(50)	16
Balance at the end of the period	$ 712	$ 769

Allowance for Credit Losses (Im

Allowance for Credit Losses (Impairment By Loan Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	$ 1,714	$ 1,667
Loans Individually Evaluated for Impairment, Allowance	99	99
Loans Collectively Evaluated for Impairment, Recorded Investment	7,046,563	7,207,484
Loans Collectively Evaluated for Impairment, Allowance	110,128	110,275
Commercial, financial and agricultural \| Domestic \| Commercial.
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	263	298
Loans Individually Evaluated for Impairment, Allowance	29	29
Loans Collectively Evaluated for Impairment, Recorded Investment	1,461,358	1,501,554
Loans Collectively Evaluated for Impairment, Allowance	23,872	23,149
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	554	562
Loans Collectively Evaluated for Impairment, Recorded Investment	2,560,990	2,710,494
Loans Collectively Evaluated for Impairment, Allowance	34,854	35,654
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	123	131
Loans Collectively Evaluated for Impairment, Recorded Investment	255,427	284,405
Loans Collectively Evaluated for Impairment, Allowance	3,062	3,291
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	567	589
Loans Individually Evaluated for Impairment, Allowance	70	70
Loans Collectively Evaluated for Impairment, Recorded Investment	1,742,131	1,667,524
Loans Collectively Evaluated for Impairment, Allowance	36,302	35,320
Real estate - mortgage \| Domestic \| Residential: first lien
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Individually Evaluated for Impairment, Recorded Investment	207	87
Loans Collectively Evaluated for Impairment, Recorded Investment	398,642	403,571
Loans Collectively Evaluated for Impairment, Allowance	4,016	4,073
Real estate - mortgage \| Domestic \| Residential Junior Lien
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Collectively Evaluated for Impairment, Recorded Investment	441,524	464,173
Loans Collectively Evaluated for Impairment, Allowance	7,046	7,754
Consumer \| Domestic
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Collectively Evaluated for Impairment, Recorded Investment	41,019	40,966
Loans Collectively Evaluated for Impairment, Allowance	264	272
Foreign. \| Foreign
Loan loss allowances, impaired financing receivable, evaluated individually or collectively
Loans Collectively Evaluated for Impairment, Recorded Investment	145,472	134,797
Loans Collectively Evaluated for Impairment, Allowance	$ 712	$ 762

Allowance for Credit Losses (No

Allowance for Credit Losses (Non-accrual Basis By Loan Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loan loss allowances, financing receivable past due
Non-accrual loans, total	$ 1,930	$ 1,921
Commercial, financial and agricultural \| Domestic \| Commercial.
Loan loss allowances, financing receivable past due
Non-accrual loans, total	263	298
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial
Loan loss allowances, financing receivable past due
Non-accrual loans, total	554	562
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily
Loan loss allowances, financing receivable past due
Non-accrual loans, total	123	131
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development
Loan loss allowances, financing receivable past due
Non-accrual loans, total	567	589
Real estate - mortgage \| Domestic \| Residential: first lien
Loan loss allowances, financing receivable past due
Non-accrual loans, total	$ 423	$ 341

Allowance for Credit Losses (_2

Allowance for Credit Losses (Impaired Loans) (Details)	3 Months Ended
Allowance for Credit Losses (Impaired Loans) (Details)	Mar. 31, 2022USD ($)	May 02, 2022USD ($)loan	Dec. 31, 2021USD ($)
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	$ 2,811,000		$ 3,253,000
Amount of loans with some degree of payment deferral		$ 114,705,000
Period of charge off for past due unsecured commercial loans	90 days
Paycheck protection program loans (COVID-19 program)
Loan loss allowances, impaired financing receivable
Period of time PPP loans cover payroll and certain other costs	168 days
Interest rate on receivable	1.00%
Number of loans \| loan		590
Amount of loans outstanding		$ 35,793,000
Paycheck protection program loans (COVID-19 program) \| Loans made prior to June 5, 2020
Loan loss allowances, impaired financing receivable
Term of receivable (in years)	2 years
Paycheck protection program loans (COVID-19 program) \| Loans made after June 5, 2020
Loan loss allowances, impaired financing receivable
Term of receivable (in years)	5 years
Real estate - mortgage \| Domestic \| Residential: first lien
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	$ 1,815,000		2,254,000
Real estate - mortgage \| Domestic \| Residential Junior Lien
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	104,000		105,000
Consumer \| Domestic
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	831,000		878,000
Foreign. \| Foreign
Loan loss allowances, impaired financing receivable
Total troubled debt restructuring	$ 61,000		$ 16,000

Allowance for Credit Losses (Ag

Allowance for Credit Losses (Aging By Loan Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	$ 7,254	$ 8,642
Loans	7,048,277	7,209,151
Current
Financing receivable recorded investment
Loans	7,027,437	7,171,688
Total Past Due
Financing receivable recorded investment
Loans	20,840	37,463
30 to 59 Days
Financing receivable recorded investment
Loans	10,009	25,836
60 to 89 Days
Financing receivable recorded investment
Loans	2,963	2,456
90 Days or Greater
Financing receivable recorded investment
Loans	7,868	9,171
Commercial, financial and agricultural
Financing receivable recorded investment
Loans	4,278,715	4,497,444
Commercial, financial and agricultural \| Domestic \| Commercial.
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	442	577
Loans	1,461,620	1,501,852
Commercial, financial and agricultural \| Domestic \| Commercial. \| Current
Financing receivable recorded investment
Loans	1,458,757	1,498,438
Commercial, financial and agricultural \| Domestic \| Commercial. \| Total Past Due
Financing receivable recorded investment
Loans	2,863	3,414
Commercial, financial and agricultural \| Domestic \| Commercial. \| 30 to 59 Days
Financing receivable recorded investment
Loans	2,160	2,534
Commercial, financial and agricultural \| Domestic \| Commercial. \| 60 to 89 Days
Financing receivable recorded investment
Loans	261	303
Commercial, financial and agricultural \| Domestic \| Commercial. \| 90 Days or Greater
Financing receivable recorded investment
Loans	442	577
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing		307
Loans	2,561,545	2,711,056
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| Current
Financing receivable recorded investment
Loans	2,556,851	2,692,076
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| Total Past Due
Financing receivable recorded investment
Loans	4,694	18,980
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| 30 to 59 Days
Financing receivable recorded investment
Loans	2,973	18,164
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| 60 to 89 Days
Financing receivable recorded investment
Loans	1,384	172
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| 90 Days or Greater
Financing receivable recorded investment
Loans	337	644
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily
Financing receivable recorded investment
Loans	255,550	284,536
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily \| Current
Financing receivable recorded investment
Loans	255,540	284,536
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily \| Total Past Due
Financing receivable recorded investment
Loans	10
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily \| 30 to 59 Days
Financing receivable recorded investment
Loans	10
Obligations of states and political subdivisions
Financing receivable recorded investment
Loans	1,742,698	1,668,113
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	536	188
Loans	1,742,698	1,668,113
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| Current
Financing receivable recorded investment
Loans	1,740,821	1,667,092
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| Total Past Due
Financing receivable recorded investment
Loans	1,877	1,021
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| 30 to 59 Days
Financing receivable recorded investment
Loans	1,302	499
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| 60 to 89 Days
Financing receivable recorded investment
Loans	39	334
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| 90 Days or Greater
Financing receivable recorded investment
Loans	536	188
Real estate - mortgage
Financing receivable recorded investment
Loans	840,373	867,831
Real estate - mortgage \| Domestic \| Residential: first lien
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	4,887	4,937
Loans	398,849	403,658
Real estate - mortgage \| Domestic \| Residential: first lien \| Current
Financing receivable recorded investment
Loans	390,451	394,975
Real estate - mortgage \| Domestic \| Residential: first lien \| Total Past Due
Financing receivable recorded investment
Loans	8,398	8,683
Real estate - mortgage \| Domestic \| Residential: first lien \| 30 to 59 Days
Financing receivable recorded investment
Loans	2,541	2,342
Real estate - mortgage \| Domestic \| Residential: first lien \| 60 to 89 Days
Financing receivable recorded investment
Loans	693	1,212
Real estate - mortgage \| Domestic \| Residential: first lien \| 90 Days or Greater
Financing receivable recorded investment
Loans	5,164	5,129
Real estate - mortgage \| Domestic \| Residential Junior Lien
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	1,168	1,055
Loans	441,524	464,173
Real estate - mortgage \| Domestic \| Residential Junior Lien \| Current
Financing receivable recorded investment
Loans	439,718	462,256
Real estate - mortgage \| Domestic \| Residential Junior Lien \| Total Past Due
Financing receivable recorded investment
Loans	1,806	1,917
Real estate - mortgage \| Domestic \| Residential Junior Lien \| 30 to 59 Days
Financing receivable recorded investment
Loans	218	747
Real estate - mortgage \| Domestic \| Residential Junior Lien \| 60 to 89 Days
Financing receivable recorded investment
Loans	420	115
Real estate - mortgage \| Domestic \| Residential Junior Lien \| 90 Days or Greater
Financing receivable recorded investment
Loans	1,168	1,055
Consumer
Financing receivable recorded investment
Loans	41,019	40,966
Consumer \| Domestic
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	6	4
Loans	41,019	40,966
Consumer \| Domestic \| Current
Financing receivable recorded investment
Loans	40,671	40,643
Consumer \| Domestic \| Total Past Due
Financing receivable recorded investment
Loans	348	323
Consumer \| Domestic \| 30 to 59 Days
Financing receivable recorded investment
Loans	243	231
Consumer \| Domestic \| 60 to 89 Days
Financing receivable recorded investment
Loans	99	88
Consumer \| Domestic \| 90 Days or Greater
Financing receivable recorded investment
Loans	6	4
Foreign.
Financing receivable recorded investment
Loans	145,472	134,797
Foreign. \| Foreign
Financing receivable recorded investment
Past due 90 days or Greater and Still Accruing	215	1,574
Loans	145,472	134,797
Foreign. \| Foreign \| Current
Financing receivable recorded investment
Loans	144,628	131,672
Foreign. \| Foreign \| Total Past Due
Financing receivable recorded investment
Loans	844	3,125
Foreign. \| Foreign \| 30 to 59 Days
Financing receivable recorded investment
Loans	562	1,319
Foreign. \| Foreign \| 60 to 89 Days
Financing receivable recorded investment
Loans	67	232
Foreign. \| Foreign \| 90 Days or Greater
Financing receivable recorded investment
Loans	$ 215	$ 1,574

Allowance for Credit Losses (Po

Allowance for Credit Losses (Portfolio Credit Quality) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loan portfolio by credit quality indicator
2022	$ 766,572
2021	3,147,446	$ 3,641,975
2020	1,317,377	1,540,327
2019	787,224	885,554
2018	571,853	616,037
2017/Prior	457,805	241,896
Prior		283,362
Total loans	7,048,277	7,209,151
Commercial, financial and agricultural
Loan portfolio by credit quality indicator
Total loans	4,278,715	4,497,444
Commercial, financial and agricultural \| Domestic \| Commercial.
Loan portfolio by credit quality indicator
2022	187,835
2021	977,802	1,154,047
2020	131,401	168,461
2019	70,441	78,434
2018	56,138	58,577
2017/Prior	38,003	37,178
Prior		5,155
Total loans	1,461,620	1,501,852
Commercial, financial and agricultural \| Domestic \| Commercial. \| Pass
Loan portfolio by credit quality indicator
2022	157,913
2021	895,087	1,041,763
2020	130,593	167,691
2019	69,495	77,579
2018	56,082	58,439
2017/Prior	37,946	37,104
Prior		5,144
Total loans	1,347,116	1,387,720
Commercial, financial and agricultural \| Domestic \| Commercial. \| Special Review
Loan portfolio by credit quality indicator
2022	81
2021	75,098	74,559
2020	492	497
2019	139	139
2018		81
Total loans	75,810	75,276
Commercial, financial and agricultural \| Domestic \| Commercial. \| Watch List - Pass
Loan portfolio by credit quality indicator
2022	29,841
2021	7,087	33,920
2019	807
Prior		10
Total loans	37,735	33,930
Commercial, financial and agricultural \| Domestic \| Commercial. \| Watch List - Substandard
Loan portfolio by credit quality indicator
2021	324	3,581
2020	316	273
2019		716
2018	56	57
Prior		1
Total loans	696	4,628
Commercial, financial and agricultural \| Domestic \| Commercial. \| Watch List - Doubtful
Loan portfolio by credit quality indicator
2021	206	224
2017/Prior	57	74
Total loans	263	298
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial
Loan portfolio by credit quality indicator
2022	275,563
2021	722,741	1,021,054
2020	704,462	780,449
2019	284,438	292,569
2018	403,595	420,801
2017/Prior	170,746	98,606
Prior		97,577
Total loans	2,561,545	2,711,056
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| Pass
Loan portfolio by credit quality indicator
2022	220,689
2021	721,404	1,001,335
2020	639,609	680,777
2019	280,518	288,333
2018	403,252	417,353
2017/Prior	167,803	96,096
Prior		97,119
Total loans	2,433,275	2,581,013
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| Special Review
Loan portfolio by credit quality indicator
2022	2,984
2021	1,077	929
2020	1,272	1,292
2018	343	3,448
2017/Prior	60	61
Total loans	5,736	5,730
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| Watch List - Pass
Loan portfolio by credit quality indicator
2022	51,890
2021	260	18,790
2020	9,312	44,059
2017/Prior	92	94
Prior		1
Total loans	61,554	62,944
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| Watch List - Substandard
Loan portfolio by credit quality indicator
2020	54,053	54,097
2019	3,583	3,899
2017/Prior	2,790	2,355
Prior		456
Total loans	60,426	60,807
Commercial, financial and agricultural \| Domestic \| Commercial real estate: farmland & commercial \| Watch List - Doubtful
Loan portfolio by credit quality indicator
2020	216	224
2019	337	337
2017/Prior	1
Prior		1
Total loans	554	562
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily
Loan portfolio by credit quality indicator
2022	3,335
2021	132,852	133,152
2020	62,997	40,897
2019	31,231	78,609
2018	6,901	10,632
2017/Prior	18,234	14,217
Prior		7,029
Total loans	255,550	284,536
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily \| Pass
Loan portfolio by credit quality indicator
2022	3,335
2021	132,852	133,152
2020	62,874	40,766
2019	31,231	78,609
2018	6,901	10,632
2017/Prior	18,234	14,217
Prior		7,029
Total loans	255,427	284,405
Commercial, financial and agricultural \| Domestic \| Commercial real estate: multifamily \| Watch List - Doubtful
Loan portfolio by credit quality indicator
2020	123	131
Total loans	123	131
Obligations of states and political subdivisions
Loan portfolio by credit quality indicator
Total loans	1,742,698	1,668,113
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development
Loan portfolio by credit quality indicator
2022	170,274
2021	997,584	967,431
2020	229,810	335,593
2019	295,536	308,884
2018	33,305	37,124
2017/Prior	16,189	16,642
Prior		2,439
Total loans	1,742,698	1,668,113
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| Pass
Loan portfolio by credit quality indicator
2022	170,274
2021	996,912	966,946
2020	206,608	312,389
2019	295,325	308,673
2018	33,305	37,124
2017/Prior	16,189	16,642
Prior		2,439
Total loans	1,718,613	1,644,213
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| Special Review
Loan portfolio by credit quality indicator
2019	211	211
Total loans	211	211
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| Watch List - Pass
Loan portfolio by credit quality indicator
2020	23,100	23,100
Total loans	23,100	23,100
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| Watch List - Substandard
Loan portfolio by credit quality indicator
2021	207
Total loans	207
Obligations of states and political subdivisions \| Domestic \| Commercial Real Estate: other construction and land development \| Watch List - Doubtful
Loan portfolio by credit quality indicator
2021	465	485
2020	102	104
Total loans	567	589
Real estate - mortgage
Loan portfolio by credit quality indicator
Total loans	840,373	867,831
Real estate - mortgage \| Domestic \| Residential: first lien
Loan portfolio by credit quality indicator
2022	61,506
2021	90,813	128,798
2020	58,476	52,812
2019	47,962	57,352
2018	39,298	49,259
2017/Prior	100,794	29,599
Prior		85,838
Total loans	398,849	403,658
Real estate - mortgage \| Domestic \| Residential: first lien \| Pass
Loan portfolio by credit quality indicator
2022	61,506
2021	89,814	128,742
2020	58,393	52,725
2019	47,861	57,249
2018	39,298	49,259
2017/Prior	100,671	29,477
Prior		85,838
Total loans	397,543	403,290
Real estate - mortgage \| Domestic \| Residential: first lien \| Watch List - Substandard
Loan portfolio by credit quality indicator
2021	999	56
2019	101	103
2017/Prior		122
Total loans	1,100	281
Real estate - mortgage \| Domestic \| Residential: first lien \| Watch List - Doubtful
Loan portfolio by credit quality indicator
2020	83	87
2017/Prior	123
Total loans	206	87
Real estate - mortgage \| Domestic \| Residential Junior Lien
Loan portfolio by credit quality indicator
2022	19,714
2021	128,627	130,629
2020	110,051	123,062
2019	50,272	59,113
2018	26,346	30,603
2017/Prior	106,514	40,855
Prior		79,911
Total loans	441,524	464,173
Real estate - mortgage \| Domestic \| Residential Junior Lien \| Pass
Loan portfolio by credit quality indicator
2022	19,714
2021	128,627	130,629
2020	110,051	123,062
2019	50,272	59,113
2018	26,346	30,603
2017/Prior	106,514	40,855
Prior		79,911
Total loans	441,524	464,173
Consumer
Loan portfolio by credit quality indicator
Total loans	41,019	40,966
Consumer \| Domestic
Loan portfolio by credit quality indicator
2022	9,251
2021	25,436	32,053
2020	3,552	5,693
2019	985	1,370
2018	137	189
2017/Prior	1,658	9
Prior		1,652
Total loans	41,019	40,966
Consumer \| Domestic \| Pass
Loan portfolio by credit quality indicator
2022	9,251
2021	25,436	32,053
2020	3,552	5,693
2019	985	1,370
2018	137	189
2017/Prior	1,658	9
Prior		1,652
Total loans	41,019	40,966
Foreign.
Loan portfolio by credit quality indicator
Total loans	145,472	134,797
Foreign. \| Foreign
Loan portfolio by credit quality indicator
2022	39,094
2021	71,591	74,811
2020	16,628	33,360
2019	6,359	9,223
2018	6,133	8,852
2017/Prior	5,667	4,790
Prior		3,761
Total loans	145,472	134,797
Foreign. \| Foreign \| Pass
Loan portfolio by credit quality indicator
2022	39,094
2021	71,591	74,811
2020	16,628	33,360
2019	6,359	9,223
2018	6,133	8,852
2017/Prior	5,667	4,790
Prior		3,761
Total loans	$ 145,472	$ 134,797

Stock Options (Details)

Stock Options (Details) - USD ($)	May 02, 2022	Apr. 18, 2022	Mar. 31, 2022	Mar. 31, 2021	Apr. 05, 2012
Employee Stock Options \| 2012 Plan
Stock option details
Shares available for future grants			5,628		800,000
Maximum exercisable period for granted share-based compensation			10 years
Number of options granted (in shares)			31,150
Stock option activity
Options outstanding at the beginning of the period (in shares)			520,551
Plus: Options granted (in shares)			31,150
Less:
Exercise of stock options (in shares)			6,337
Options forfeited (in shares)			6,100
Options outstanding at the end of the period (in shares)			539,264
Options fully vested and exercisable at the end of the period (in shares)			286,828
Stock Options, Weighted average exercise price
Options outstanding at the beginning, weighted average exercise price (in dollars per share)			$ 28.28
Plus: Options granted, weighted average exercise price (in dollars per share)			38.92
Less:
Options exercised, weighted average exercise price (in dollars per share)			23.22
Options forfeited, weighted average exercise price (in dollars per share)			32.90
Options outstanding at the end, weighted average exercise price (in dollars per share)			28.90
Options fully vested and exercisable at the end, weighted average exercise price (in dollars per share)			$ 23.29
Stock Options, Weighted average remaining contractual term (years)
Options outstanding at the end, weighted average remaining contractual term (years)			4 years 6 months 21 days
Options fully vested and exercisable at the end, weighted average remaining contractual term (years)			2 years 5 months 26 days
Stock Options, Aggregate intrinsic value
Options outstanding at the end, aggregate intrinsic value			$ 7,175,000
Options fully vested and exercisable at the end, aggregate intrinsic value			5,428,000
Stock-based compensation expense			121,000	$ 159,000
Stock-based compensation cost, unrecognized, related to non-vested options			$ 1,089,000
Stock-based compensation cost, unrecognized, related to non-vested options, weighted-average period of recognition			2 years
Stock Appreciation Rights \| SAR Plan
Stock option details
Shares available for future grants		750,000
Maximum exercisable period for granted share-based compensation		10 years
Number of rights issued	0
Incentive Stock Options to 10 Percent Shareholders [Member] \| 2012 Plan
Stock option details
Maximum exercisable period for granted share-based compensation			5 years

Investment Securities, Equity_3

Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Held-to-maturity securities
Amortized cost	$ 3,400	$ 3,400
Estimated fair value	3,400	3,400
Carrying Value	3,400	3,400
Available-for-sale securities
Amortized cost	4,404,302	4,254,960
Available for sale debt securities	4,141,997	4,213,920
Total Amortized cost	4,404,302	4,254,960
Total Gross unrealized gains	3,224	17,197
Total Gross unrealized losses	265,529	58,237
Estimate of Fair Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities and equity securities	4,141,997	4,213,920
Reported Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities and equity securities	4,141,997	4,213,920
US Treasury Securities
Available-for-sale securities
Amortized cost	49,099
US Treasury Securities \| Estimate of Fair Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	49,099
US Treasury Securities \| Reported Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	49,099
Residential mortgage-backed securities
Available-for-sale securities
Amortized cost	4,313,749	4,213,441
Gross unrealized gains	2,133	14,159
Gross unrealized losses	(265,529)	(58,237)
Residential mortgage-backed securities \| Estimate of Fair Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	4,050,353	4,169,363
Residential mortgage-backed securities \| Reported Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	4,050,353	4,169,363
US Government Corporations and Agencies Securities [Member]
Available-for-sale securities
Available for sale debt securities	734,878	824,474
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Available-for-sale securities
Available for sale debt securities	3,315,475	3,344,899
States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities
Amortized cost	41,454	41,519
Gross unrealized gains	1,091	3,038
States and Political Subdivisions Debt Securities [Member] \| Estimate of Fair Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	42,545	44,557
States and Political Subdivisions Debt Securities [Member] \| Reported Value Measurement [Member]
Available-for-sale securities
Available for sale debt securities	42,545	44,557
Other Debt Obligations [Member]
Held-to-maturity securities
Amortized cost	3,400	3,400
Estimated fair value	3,400	3,400
Carrying Value	$ 3,400	$ 3,400

Investment Securities, Equity_4

Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Contractual Maturities and Estimated Fair Values) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Amortized Cost
Due in one year or less, held-to-maturity debt securities amortized cost	$ 2,325,000
Due after one year through five years, held-to-maturity debt securities amortized cost	1,075,000
Amortized cost, held-to-maturity debt securities	3,400,000		$ 3,400,000
Fair Value
Due in one year or less, held-to-maturity debt securities, Estimated fair value	2,325,000
Due after one year through five years, held-to-maturity debt securities, Estimated fair value	1,075,000
Estimated fair value	3,400,000		3,400,000
Available-for-sale debt securities amortized cost disclosures
Due after one year through five years, available-for-sale debt securities amortized cost	49,099,000
Due after ten years, available-for-sale debt securities amortized cost	41,454,000
Residential mortgage-backed securities, amortized cost	4,313,749,000
Amortized cost, Available-for-sale securities	4,404,302,000		4,254,960,000
Available for sale debt securities, Estimated Fair Value Disclosures
Due after one year through five years, available-for-sale debt securities, Estimated Fair Value	49,099,000
Due after ten years, available-for-sale debt securities, Estimated Fair Value	42,545,000
Residential mortgage-backed securities, Estimated Fair Value	4,050,353,000
Estimated fair value, Available for sale securities	4,141,997,000		$ 4,213,920,000
Available for sale debt securities, Estimated Fair Value Disclosures
Proceeds from sales and calls of available for sale securities	0	$ 2,510,000
Proceeds from sales of mortgage-backed securities	0	0
Gross gains realized on sales	0	0
Gross losses realized on sales	0	$ (4)
Collateral Pledged
Available-for-sale debt securities amortized cost disclosures
Amortized cost, Available-for-sale securities	1,517,343,000
Available for sale debt securities, Estimated Fair Value Disclosures
Fair value of available for sale investment securities pledged	$ 1,405,511,000

Investment Securities, Equity_5

Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Unrealized Losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Available for sale:
Fair value, less than 12 months	$ 3,181,601	$ 3,037,188
Unrealized losses, less than 12 Months	(237,429)	(53,060)
Fair value, 12 months or more	515,872	423,733
Unrealized losses, 12 Months or More	(28,100)	(5,177)
Fair value, Total	3,697,473	3,460,921
Unrealized losses, Total	(265,529)	(58,237)
Residential Mortgage Backed Securities [Member]
Available for sale:
Fair value, less than 12 months	3,181,601	3,037,188
Unrealized losses, less than 12 Months	(237,429)	(53,060)
Fair value, 12 months or more	515,872	423,733
Unrealized losses, 12 Months or More	(28,100)	(5,177)
Fair value, Total	3,697,473	3,460,921
Unrealized losses, Total	$ (265,529)	$ (58,237)

Investment Securities, Equity_6

Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Unrealized and realized gains and losses recognized in net income on equity securities ) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments
Equity Securities	$ 5,810,000		$ 6,079,000
Summary of unrealized and realized gains and losses recognized in net income on equity securities
Net gains (losses) recognized during the period on equity securities	(269,000)	$ (77,000)
Unrealized gain on equity securities with readily determinable fair values	$ (269,000)	$ (77,000)

Investment Securities, Equity_7

Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments (Other Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Other investments
LIHTC
Investments	$ 236,397	$ 179,543
Other liabilities
LIHTC
Unfunded commitments	$ 55,108	$ 40,094

Other Borrowed Funds (Details)

Other Borrowed Funds (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Federal Home Loan Bank advances
Other borrowed funds	$ 436,090,000	$ 436,138,000
Maximum [Member]
Federal Home Loan Bank advances
Percentage of decrease in other borrowed funds	(0.10%)

Junior Subordinated Deferrabl_3

Junior Subordinated Deferrable Interest Debentures (Details)	3 Months Ended
	Mar. 31, 2022USD ($)item	Dec. 31, 2021USD ($)
Junior Subordinated Deferrable Interest Debentures
Number of statutory business trusts issuing trust preferred securities \| item	5
Junior subordinated deferrable interest debentures \| $	$ 134,642,000	$ 134,642,000
Maximum number of consecutive quarterly period available for deferral of interest payment on Trusts VIII, IX, X, XI and XII \| item	20
Percentage of capital securities issued by trust qualifying as Tier I capital, maximum	25.00%
Percentage of capital securities issued by trust qualifying as Tier II capital, minimum	25.00%
Capital securities issued by the trust, qualifying as Tier I capital \| $	$ 134,642,000	$ 134,642,000

Junior Subordinated Deferrabl_4

Junior Subordinated Deferrable Interest Debentures (Key Information) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 134,642,000	$ 134,642,000
Trust VIII
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 25,774,000
Interest rate (as a percent)	3.29%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	3.05%
Trust IX
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 41,238,000
Interest rate (as a percent)	1.83%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.62%
Trust X
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 21,021,000
Interest rate (as a percent)	1.97%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.65%
Trust XI
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 25,990,000
Interest rate (as a percent)	1.83%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.62%
Trust XII
Junior subordinated interest deferrable debentures, major types of business trusts
Junior subordinated deferrable interest debentures	$ 20,619,000
Interest rate (as a percent)	1.97%
Interest rate index	LIBOR
Spread on interest rate index (as a percent)	1.45%

Common Stock and Dividends (Det

Common Stock and Dividends (Details) - USD ($)	May 02, 2022	Feb. 28, 2022	Feb. 23, 2022	Feb. 17, 2021	Apr. 30, 2009
Common Stock and Dividends
Cash dividends paid to common shareholders (in dollars per share)		$ 0.60		$ 0.60
Repurchase of common stock, authorized amount			$ 150,000,000		$ 40,000,000
Period of repurchase of common stock			12 months		12 months
Cumulative number of shares repurchased under all stock repurchase programs	12,498,452
Cumulative cost of shares repurchased under all stock repurchase programs	$ 366,433,000

Capital Requirements (Capital A

Capital Requirements (Capital Amounts and Ratios) (Details)	Mar. 31, 2022	Dec. 31, 2021
Capital Requirements
CET 1 ratio	20.06	20.47
Total Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	22.24	22.73
Tier 1 capital (to Risk Weighted Assets), Actual Ratio (as a percent)	21.12	21.59
Tier 1 capital (to Average Assets), Actual Ratio (as a percent)	13.87	13.94