Cadence Bancorporation 10-Q 5 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 05, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Trading Symbol	CADE
Entity Registrant Name	Cadence Bancorporation
Entity Central Index Key	0001614184
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity File Number	001-38058
Entity Tax Identification Number	47-1329858
Entity Address, Address Line One	2800 Post Oak Boulevard
Entity Address, Address Line Two	Suite 3800
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77056
City Area Code	713
Local Phone Number	871-4000
Entity Common Stock, Shares Outstanding		124,777,857
Entity Interactive Data Current	Yes
Title of 12(b) Security	Class A Common Stock
Security Exchange Name	NYSE
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Document Transition Report	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 233,534	$ 283,261
Interest-bearing deposits with banks	1,861,886	1,768,847
Federal funds sold	4,679	1,838
Total cash and cash equivalents	2,100,099	2,053,946
Investment securities available-for-sale, amortized cost of $4,245,206 and allowance for credit losses of zero at June 30, 2021 and amortized cost of $3,249,067 and allowance for credit losses of zero at December 31, 2020	4,277,448	3,332,168
FRB and FHLB stock	69,886	76,552
Loans held for sale	35,209	47,018
Loans, net of unearned income	11,634,502	12,719,129
Less: allowance for credit losses	(247,732)	(367,160)
Net loans	11,386,770	12,351,969
Premises and equipment, net	124,643	123,630
Cash surrender value of life insurance	187,182	187,626
Net deferred tax asset	49,867	63,699
Goodwill	43,061	43,061
Other intangible assets, net	73,959	83,780
Other assets	344,499	349,118
Total assets	18,692,623	18,712,567
Liabilities:
Noninterest-bearing deposits	5,670,234	5,033,748
Interest-bearing deposits	10,313,574	11,018,497
Total deposits	15,983,808	16,052,245
Federal Home Loan Bank advances	100,000	100,000
Senior debt		49,986
Subordinated debt	143,659	183,344
Junior subordinated debentures	37,752	37,637
Notes payable	1,277	1,702
Other liabilities	223,389	166,551
Total liabilities	16,489,885	16,591,465
Shareholders' equity:
Common stock, $0.01 par value, authorized 300,000,000 shares; 133,562,513 shares issued and 124,752,738 shares outstanding at June 30, 2021 and 133,214,844 shares issued and 125,978,561 shares outstanding at December 31, 2020	1,336	1,332
Additional paid-in capital	1,886,209	1,880,930
Treasury stock, at cost; 8,809,775 shares and 7,236,283 shares, respectively	(160,884)	(130,889)
Retained earnings	429,044	259,643
Accumulated other comprehensive income	47,033	110,086
Total shareholders' equity	2,202,738	2,121,102
Total liabilities and shareholders' equity	$ 18,692,623	$ 18,712,567

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Available-for-sale securities, Amortized cost	$ 4,245,206	$ 3,249,067
Allowance for credit losses	$ 0	$ 0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	133,562,513	133,214,844
Common Stock, Shares, Outstanding	124,752,738	125,978,561
Treasury stock, shares outstanding	8,809,775	7,236,283

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
INTEREST INCOME
Interest and fees on loans	$ 131,278	$ 162,854	$ 271,102	$ 337,988
Interest and dividends on securities:
Taxable	13,551	12,207	25,372	26,222
Tax-exempt	2,088	1,539	4,124	2,966
Other interest income	1,112	575	2,133	2,753
Total interest income	148,029	177,175	302,731	369,929
INTEREST EXPENSE
Interest on time deposits	3,007	10,451	7,284	23,195
Interest on other deposits	3,036	7,690	6,740	29,674
Interest on borrowed funds	3,445	4,320	7,417	8,878
Total interest expense	9,488	22,461	21,441	61,747
Net interest income	138,541	154,714	281,290	308,182
Provision (release) for credit losses	(51,876)	158,811	(100,138)	242,240
Net interest income after provision (release) for credit losses	190,417	(4,097)	381,428	65,942
NONINTEREST INCOME
Investment advisory revenue	8,222	6,505	15,830	12,111
Trust services revenue	4,888	4,092	10,397	8,908
Credit related fees	5,477	4,401	9,327	10,384
Service charges on deposit accounts	7,228	4,852	13,633	11,268
Mortgage banking income	1,587	2,020	3,702	3,131
Bankcard fees	1,919	1,716	3,672	3,674
Payroll processing revenue	1,258	1,143	2,749	2,510
SBA income	5,810	1,335	9,777	3,243
Other service fees	1,963	1,528	4,172	3,440
Securities gains, net	11	2,286	2,270	5,280
Other income	8,111	72	14,640	1,070
Total noninterest income	46,474	29,950	90,169	65,019
NONINTEREST EXPENSE
Salaries and employee benefits	58,619	47,158	115,689	95,965
Premises and equipment	10,709	10,634	21,084	21,443
Merger related expenses	6,267		6,267	1,281
Goodwill impairment				443,695
Intangible asset amortization	4,836	5,472	9,821	11,065
Other expense	25,635	25,356	51,027	52,824
Total noninterest expense	106,066	88,620	203,888	626,273
Income (loss) before income taxes	130,825	(62,767)	267,709	(495,312)
Income tax expense (benefit)	29,516	(6,653)	59,975	(39,887)
Net income (loss)	$ 101,309	$ (56,114)	$ 207,734	$ (455,425)
Weighted average common shares outstanding (Basic)	124,732,617	125,924,652	124,904,976	126,277,549
Weighted average common shares outstanding (Diluted)	125,548,794	125,924,652	125,584,194	126,277,549
Earnings (loss) per common share (Basic)	$ 0.81	$ (0.45)	$ 1.65	$ (3.61)
Earnings (loss) per common share (Diluted)	$ 0.80	$ (0.45)	$ 1.64	$ (3.61)

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 101,309	$ (56,114)	$ 207,734	$ (455,425)
Unrealized gains (losses) on securities available-for-sale:
Net unrealized gains (losses), net of income taxes of $9,209, $1,502, ($11,433), and $16,651	29,925	4,832	(37,156)	52,957
Less reclassification adjustments for gains realized in net income, net of income taxes of $3, $542, $534, and $1,252	8	1,744	1,736	4,028
Net change in unrealized gains (losses) on securities available-for-sale, net of tax	29,917	3,088	(38,892)	48,929
Unrealized gains (losses) on derivative instruments designated as cash flow hedges:
Net unrealized gains (losses), net of income taxes of $668, $959, ($1,575), and $41,879	2,170	3,087	(5,120)	129,399
Less reclassification adjustments for gains realized in net income, net of income taxes of $2,531, $4,307, $5,839, and $6,232	8,253	13,388	19,041	19,570
Net change in unrealized (losses) gains on derivative instruments, net of tax	(6,083)	(10,301)	(24,161)	109,829
Other comprehensive income (loss), net of tax	23,834	(7,213)	(63,053)	158,758
Comprehensive income (loss)	$ 125,143	$ (63,327)	$ 144,681	$ (296,667)

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net unrealized (losses) gains on securities available-for-sale, taxes	$ 9,209	$ 1,502	$ (11,433)	$ 16,651
Reclassification adjustments for gains on securities available-for-sale realized in net income, taxes	3	542	534	1,252
Net unrealized (losses) gains on derivative instruments designated as cash flow hedges, taxes	668	959	(1,575)	41,879
Reclassification adjustments for gains on derivative instruments designated as cash flow hedges realized in net income, taxes	$ 2,531	$ 4,307	$ 5,839	$ 6,232

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Class A Common Shares Outstanding	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Retained EarningsCumulative Effect, Period of Adoption, Adjustment	Accumulated OCI
Balance at Dec. 31, 2019	$ 2,460,846	$ (62,779)		$ 1,330	$ 1,873,063	$ (100,752)	$ 572,503	$ (62,779)	$ 114,702
Balance, Shares at Dec. 31, 2019			127,598
Accounting Standards Update Extensible List		us-gaap:AccountingStandardsUpdate201613Member						us-gaap:AccountingStandardsUpdate201613Member
Net income (loss)	(399,311)						(399,311)
Equity-based compensation cost	1,064		$ 131	1	1,063
Cash dividends declared	(22,139)						(22,139)
Dividend equivalents on restricted stock units	(136)						(136)
Purchase of treasury stock, at cost	(29,973)					(29,973)
Purchase of treasury stock, at cost, Shares			(1,831)
Other comprehensive income (loss)	165,971								165,971
Balance at Mar. 31, 2020	2,113,543			1,331	1,874,126	(130,725)	88,138		280,673
Balance, Shares at Mar. 31, 2020			125,898
Balance at Dec. 31, 2019	2,460,846	$ (62,779)		1,330	1,873,063	(100,752)	572,503	$ (62,779)	114,702
Balance, Shares at Dec. 31, 2019			127,598
Accounting Standards Update Extensible List		us-gaap:AccountingStandardsUpdate201613Member
Net income (loss)	(455,425)
Other comprehensive income (loss)	158,758								158,758
Balance at Jun. 30, 2020	2,045,480			1,331	1,875,651	(130,725)	25,763		273,460
Balance, Shares at Jun. 30, 2020			125,931
Balance at Mar. 31, 2020	2,113,543			1,331	1,874,126	(130,725)	88,138		280,673
Balance, Shares at Mar. 31, 2020			125,898
Net income (loss)	(56,114)						(56,114)
Equity-based compensation cost	1,525		$ 33		1,525
Cash dividends declared	(6,296)						(6,296)
Dividend equivalents on restricted stock units	35						35
Other comprehensive income (loss)	(7,213)								(7,213)
Balance at Jun. 30, 2020	2,045,480			1,331	1,875,651	(130,725)	25,763		273,460
Balance, Shares at Jun. 30, 2020			125,931
Balance at Dec. 31, 2020	2,121,102			1,332	1,880,930	(130,889)	259,643		110,086
Balance, Shares at Dec. 31, 2020			125,979
Net income (loss)	106,425						106,425
Equity-based compensation cost	1,030		$ 293	3	1,027
Cash dividends declared	(18,904)						(18,904)
Dividend equivalents on restricted stock units	(235)						(235)
Purchase of treasury stock, at cost	(29,995)					(29,995)
Purchase of treasury stock, at cost, Shares			(1,573)
Other comprehensive income (loss)	(86,887)								(86,887)
Balance at Mar. 31, 2021	2,092,536			1,335	1,881,957	(160,884)	346,929		23,199
Balance, Shares at Mar. 31, 2021			124,699
Balance at Dec. 31, 2020	2,121,102			1,332	1,880,930	(130,889)	259,643		110,086
Balance, Shares at Dec. 31, 2020			125,979
Net income (loss)	207,734
Other comprehensive income (loss)	(63,053)								(63,053)
Balance at Jun. 30, 2021	2,202,738			1,336	1,886,209	(160,884)	429,044		47,033
Balance, Shares at Jun. 30, 2021			124,753
Balance at Mar. 31, 2021	2,092,536			1,335	1,881,957	(160,884)	346,929		23,199
Balance, Shares at Mar. 31, 2021			124,699
Net income (loss)	101,309						101,309
Equity-based compensation cost	4,253		$ 54	1	4,252
Cash dividends declared	(18,816)						(18,816)
Dividend equivalents on restricted stock units	(378)						(378)
Other comprehensive income (loss)	23,834								23,834
Balance at Jun. 30, 2021	$ 2,202,738			$ 1,336	$ 1,886,209	$ (160,884)	$ 429,044		$ 47,033
Balance, Shares at Jun. 30, 2021			124,753

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020
Statement Of Stockholders Equity [Abstract]
Cash dividends declared per common share	$ 0.15	$ 0.15	$ 0.05	$ 0.175

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Statement Of Cash Flows [Abstract]
CASH FLOWS FROM OPERATING ACTIVITIES	$ 118,049	$ 464,554
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of securities available-for-sale	(1,559,698)	(505,656)
Proceeds from sales of securities available-for-sale	124,013	180,605
Proceeds from maturities, calls and paydowns of securities available-for-sale	495,659	227,948
Sales (purchases) of other securities, net	6,666	(606)
Proceeds from sales of loans transferred to held for sale	72,379	47,018
Decrease (increase) in loans, net	1,022,005	(758,878)
Purchase of premises and equipment	(11,452)	(5,320)
Proceeds from disposition of foreclosed property	1,610	2,087
Other, net	3,074	(9,227)
Net cash provided by (used in) investing activities	154,256	(822,029)
CASH FLOWS FROM FINANCING ACTIVITIES
(Decrease) increase in deposits, net	(68,437)	1,326,488
Repayment of senior debt	(50,000)
Repayment of subordinated debt	(40,000)
Repurchase of common stock	(29,995)	(29,973)
Cash dividends paid on common stock	(37,720)	(28,435)
Net cash (used in) provided by financing activities	(226,152)	1,268,080
Net increase in cash and cash equivalents	46,153	910,605
Cash and cash equivalents at beginning of period	2,053,946	988,764
Cash and cash equivalents at end of period	2,100,099	1,899,369
Cash paid during the period for:
Interest	23,588	66,069
Income taxes paid	31,822	984
Cash paid for amounts included in lease liabilities	5,576	5,562
Non-cash investing activities (at fair value):
Acquisition of real estate and other assets in settlement of loans	843	12,665
Transfers of loans held for sale to loans	2,338	10,500
Transfers of loans to loans held for sale	75,588
Securities (purchased) sold, net, with settlement after quarter end	(16,792)	132,353
Right-of-use assets obtained in exchange for operating lease liabilities	$ 5,952	$ 379

Summary of Accounting Policies

Summary of Accounting Policies	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Summary of Accounting Policies	Note 1—Summary of Accounting Policies Basis of Presentation and Consolidation The accompanying unaudited consolidated financial statements for the Company have been prepared in accordance with instructions to the SEC Form 10-Q and Article 10 of Regulation S-X; therefore, they do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, comprehensive income, and cash flows in conformity with accounting principles generally accepted in the United States of America (“GAAP”). All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the consolidated financial position and results of operations for the periods covered by this report have been included. These interim financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2020. Operating results for the period ended June 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. The Company and its subsidiaries follow GAAP, including, where applicable, general practices within the banking industry. The unaudited consolidated financial statements include the accounts of the Company and its subsidiaries. Significant intercompany accounts and transactions have been eliminated in consolidation. The assessment of whether or not the Company has a controlling interest (i.e., the primary beneficiary) in a variable-interest entity (“VIE”) is performed on an on-going basis. All equity investments in non-consolidated VIEs are included in “other assets” in the Company’s consolidated balance sheets (see Note 13). Certain amounts reported in prior years have been reclassified to conform to the 2021 presentation. These reclassifications did not materially impact the Company’s consolidated balance sheets or consolidated statements of operations. In accordance with Pronouncements adopted during the six months ended June 30, 2021 ASU No. 2019-12 In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes The Company adopted this guidance on January 1, 2021, with no material impact on the consolidated financial statements. ASU No. 2020-01 In January 2020, the FASB issued ASU No. 2020-01, Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)—Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 (a consensus of the FASB Emerging Issues Task Force) The Company adopted this guidance on January 1, 2021, with no material impact on the consolidated financial statements. ASU No. 2020-08 In October 2020, the FASB issued ASU No. 2020-08, Codification Improvements to Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs The Company adopted this guidance on January 1, 2021. As Cadence does not currently own any callable bonds at a premium, the adoption of this guidance has no immediate impact on our consolidated financial statements. ASU No. 2020-10 In October 2020, the FASB issued ASU No. 2020-10, Codification Improvements The Company adopted this guidance on January 1, 2021. The amendments in this Update did not change GAAP and, therefore, did not have a material impact on the consolidated financial statements. ASU No. 2021-01 In January 2021, the FASB issued ASU No. 2021-01, Reference Rate Reform (Topic 848): Scope. This guidance was effective for all entities upon issuance and generally can be applied through December 31, 2022, similar to existing relief provided under ASC 848. Entities may elect to apply the guidance on contract modifications either (1) retrospectively as of any date from the beginning of any interim period that includes March 12, 2020 or (2) prospectively to new modifications from any date in an interim period that includes or is after January 7, 2021, up to the date that financial statements are available to be issued. Entities may elect to apply the guidance on hedge accounting to eligible hedging relationships that existed as of the beginning of an interim period that includes March 12, 2020 and to those entered into after the beginning of the interim period that includes that date. The adoption of this guidance has no immediate impact on our consolidated financial statements. Pending Accounting Pronouncements ASU No. 2020-06 In August 2020, the FASB issued ASU No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity The guidance is effective for annual periods beginning after December 15, 2021, and interim periods within those fiscal years. The FASB specified that an entity should adopt the guidance as of the beginning of its annual fiscal year. As Cadence does not currently have any convertible debt or hedging contracts in our own equity, this guidance will have no impact on our consolidated financial statements. ASU No. 2021-04 In May 2021, the FASB issued ASU No. 2021-04, Earnings Per Share (Topic 260), Debt—Modifications and Extinguishments (Subtopic 470-50), Compensation—Stock Compensation (Topic 718), and Derivatives and Hedging—Contracts in Entity's Own Equity (Subtopic 815-40): Issuer's Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options (a consensus of the FASB Emerging Issues Task Force). The guidance clarifies whether an issuer should account for a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange as (1) an adjustment to equity and, if so, the related earnings per share (EPS) effects, if any, or (2) an expense and, if so, the manner and pattern of recognition. The guidance is effective for annual periods beginning after December 15, 2021, and interim periods within those fiscal years. The amendments should be applied prospectively to modifications or exchanges occurring on or after the effective date of the amendments. As Cadence does not currently hold any freestanding equity-classified written call options, this guidance will have no immediate impact on our consolidated financial statements.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2021
Investments Debt And Equity Securities [Abstract]
Investment Securities	Note 2—Investment Securities A summary of amortized cost and estimated fair value of securities available-for-sale at June 30, 2021 and December 31, 2020 is as follows: (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value June 30, 2021 Securities available-for-sale: Obligations of U.S. government agencies $ 302,297 $ 937 $ 6,086 $ 297,148 Mortgage-backed securities issued or guaranteed by U.S. agencies (MBS) Residential pass-through: Guaranteed by GNMA 119,173 2,277 260 121,190 Issued by FNMA and FHLMC 2,676,827 28,977 15,367 2,690,437 Other residential mortgage-backed securities 230,806 3,569 1,899 232,476 Commercial mortgage-backed securities 449,284 9,302 4,168 454,418 Total MBS 3,476,090 44,125 21,694 3,498,521 Obligations of states and municipal subdivisions 354,819 15,458 467 369,810 Other domestic debt securities 12,000 53 — 12,053 Foreign debt securities 100,000 192 276 99,916 Total securities available-for-sale $ 4,245,206 $ 60,765 $ 28,523 $ 4,277,448 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value December 31, 2020 Securities available-for-sale: Obligations of U.S. government agencies $ 289,565 $ 1,281 $ 2,117 $ 288,729 Mortgage-backed securities issued or guaranteed by U.S. agencies (MBS) Residential pass-through: Guaranteed by GNMA 122,366 3,029 60 125,335 Issued by FNMA and FHLMC 1,870,399 47,020 530 1,916,889 Other residential mortgage-backed securities 211,860 5,143 348 216,655 Commercial mortgage-backed securities 420,700 13,110 2,033 431,777 Total MBS 2,625,325 68,302 2,971 2,690,656 Obligations of states and municipal subdivisions 334,177 18,610 4 352,783 Total securities available-for-sale $ 3,249,067 $ 88,193 $ 5,092 $ 3,332,168 The scheduled contractual maturities of securities available-for-sale at June 30, 2021 were as follows: Amortized Estimated (In thousands) Cost Fair Value Due in one year or less $ — $ — Due after one year through five years 763 756 Due after five years through ten years 224,013 224,471 Due after ten years 544,340 553,700 Mortgage-backed securities 3,476,090 3,498,521 Total $ 4,245,206 $ 4,277,448 Gross gains and gross losses on sales of securities available-for-sale for the three and six months ended June 30, 2021 and 2020 are presented below. There were no impairment charges related to credit losses included in gross realized losses for the three and six months ended June 30, 2021 and 2020. The specific identification method is used to reclassify gains and losses out of other comprehensive income at the time of sale. For the Three Months Ended June 30, For the Six Months Ended June 30, (In thousands) 2021 2020 2021 2020 Gross realized gains $ 11 $ 2,286 $ 2,272 $ 5,280 Gross realized losses — — 2 — Realized gains, net $ 11 $ 2,286 $ 2,270 $ 5,280 Securities with a carrying value of $705.6 million at June 30, 2021 compared to $1.3 billion at December 31, 2020 were pledged to secure public deposits, FHLB borrowings, repurchase agreements and for other purposes as required or permitted by law. Information pertaining to Unrealized Loss Analysis Losses < 12 Months Losses > 12 Months (In thousands) Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses June 30, 2021 Obligations of U.S. government agencies $ 211,512 $ 5,772 $ 21,184 $ 314 Mortgage-backed securities 1,572,483 21,693 785 1 Obligations of states and municipal subdivisions 42,933 467 — — Foreign debt security 49,724 276 — — Total $ 1,876,652 $ 28,208 $ 21,969 $ 315 Unrealized Loss Analysis Losses < 12 Months Losses > 12 Months (In thousands) Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses December 31, 2020 Obligations of U.S. government agencies $ 151,172 $ 1,868 $ 30,658 $ 249 Mortgage-backed securities 360,197 2,832 18,476 139 Obligations of states and municipal subdivisions 841 4 — — Total $ 512,210 $ 4,704 $ 49,134 $ 388 As of June 30, 2021 and December 31, 2020, approximately 44% and 17%, respectively, of the fair value of securities in the investment portfolio reflected an unrealized loss. As of June 30, 2021, there were 12 securities that had been in a loss position for more than twelve months, and 153 securities that had been in a loss position for less than 12 months. As of June 30, 2021, the unrealized losses were not deemed to be caused by credit-related issues. Credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. Any impairment that is not credit-related is recognized in other comprehensive income. The unrealized losses were primarily impacted by recent changes in the interest rate environment, and none relate to the marketability of the securities or the issuer’s ability to honor redemption of the obligations. As of June 30, 2021, allowance for credit losses related to available-for-sale securities is zero as the decline in fair value did not result from credit-related issues. The Company has adequate liquidity and, therefore, does not plan to sell and, more likely than not, will not be required to sell these securities before recovery of the indicated impairment. Accordingly, the unrealized losses on these securities have been determined to be temporary.

Loans Held for Sale, Loans and

Loans Held for Sale, Loans and Allowance for Credit Losses	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Loans Held for Sale, Loans and Allowance for Credit Losses	Note 3—Loans Held for Sale, Loans and Allowance for Credit Losses Loans Held for Sale The following table presents a summary of the loans held for sale by portfolio segment at the lower of amortized cost or fair value as of June 30, 2021 and December 31, 2020. (In thousands) June 30, 2021 December 31, 2020 Commercial and industrial $ 29,219 $ 33,339 Commercial real estate 736 780 Consumer 5,254 12,899 Total loans held for sale (1) $ 35,209 $ 47,018 (1) $0.1 million of net accrued interest receivable is excluded from the loan balances above as of both June 30, 2021 and December 31, 2020. Loans The following table presents total loans outstanding by portfolio segment and class of financing receivable as of June 30, 2021 and December 31, 2020. Outstanding balances include originated loans, Acquired Noncredit Impaired (“ANCI”) loans, and Purchase Credit Deteriorated (“PCD”) loans. Loan balances are stated at amortized cost, which does not include accrued interest receivable. Unless otherwise stated, the total loan balances herein exclude $44.0 million and $47.0 million of net accrued interest receivable as of June 30, 2021 and December 31, 2020, respectively. (In thousands) June 30, 2021 December 31, 2020 Commercial and industrial General C&I $ 3,826,331 $ 4,421,286 Energy 1,235,262 1,310,612 Restaurant 779,846 971,662 Healthcare 448,250 547,491 Total commercial and industrial 6,289,689 7,251,051 Commercial real estate Industrial, retail, and other 1,740,144 1,683,975 Multifamily 759,882 776,494 Office 380,717 452,639 Total commercial real estate 2,880,743 2,913,108 Consumer Residential 2,373,361 2,452,865 Other 90,709 102,105 Total consumer 2,464,070 2,554,970 Total $ 11,634,502 $ 12,719,129 Paycheck Protection Program. The Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) created the Paycheck Protection Program (“PPP”) to provide certain small businesses with liquidity to support their operations during the COVID-19 pandemic. Entities were required to meet certain eligibility requirements to receive PPP loans, and they must maintain specified levels of payroll and employment to have the loans forgiven. The conditions are subject to audit by the U.S. government, but entities that borrow less than $2.0 million (together with any affiliates) were deemed to have made the required certification concerning the necessity of the loan in good faith. However, the SBA does reserve the right to audit any PPP borrower Under the PPP, eligible small businesses could apply to an SBA-approved lender for a loan that does not require collateral or personal guarantees. The loans have a 1% fixed interest rate. Loans issued prior to June 5, 2020 are due in two years unless otherwise modified and loans issued after June 5, 2020 are due in five years. However, they are eligible for forgiveness (in full or in part, including any accrued interest) under certain conditions. The following table presents the Company’s PPP loans by portfolio segment and class of financing receivable as of June 30, 2021 and December 31, 2020. June 30, 2021 December 31, 2020 (In thousands) Amortized Cost % of PPP Portfolio Amortized Cost % of PPP Portfolio Commercial and industrial General C&I $ 150,121 68.7 % $ 648,458 69.1 % Energy 21,366 9.8 76,228 8.1 Restaurant 31,235 14.3 134,454 14.4 Healthcare 15,795 7.2 79,120 8.4 Total PPP loans $ 218,517 100.0 % $ 938,260 100.0 % As a % of total loans 1.9 % 7.4 % Allowance for Credit Losses (“ACL”) Credit Risk Management . The Company’s credit risk management is overseen by the Company’s Board of Directors, including its Risk Management Committee, and the Company’s Senior Credit Risk Management Committee. The Company’s credit policy requires that key risks be identified and measured, documented and mitigated, to the extent possible, and requires various levels of internal approvals based on the characteristics of the loans, including the size of the exposure. The Company also has customized underwriting guidelines for loans in the Company’s specialized industries that the Company believes reflects the unique characteristics of these industries. The Company assigns risk ratings and risk grade classifications to all commercial loan (C&I and CRE) exposures using our internal dual credit risk rating system. The risk grade classifications are consistent with regulatory guidelines and are described as follows: • Pass—Loans for which the condition of the borrower and the performance of the loan is satisfactory or better. • Pass/Watch—Borderline risk credits representing the weakest pass risk rating. Pass/Watch credits consist of credits where financial performance is weak, but stable. Weak performance is transitional. The borrower has a viable, defined plan for improvement. Generally, it is not expected for loans to be originated within this category. • Special Mention—Loans which have potential weaknesses that are of sufficient materiality to require management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the Bank’s credit position at some future date. • Substandard—Loans which are inadequately protected by the current net worth and paying capacity of the obligor or the collateral pledged, if any. Loans classified as substandard possess well-defined weaknesses that are expected to jeopardize their liquidation. Loans in this category may be either on accrual status or nonaccrual status. • Doubtful—Loans which possess all of the weaknesses inherent in loans classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full highly questionable or improbable based on currently existing facts, conditions, and values. Loans rated as doubtful are not rated as loss because certain events may occur that could salvage the debt. Loans in this category are required to be on nonaccrual. • Loss—Loans which are considered uncollectible and of such little value that their continuance as assets is not warranted without a specific valuation allowance or charge-off. We fully reserve for any loans rated as Loss. Loans may reside in this classification for administrative purposes for a period not to exceed the earlier of thirty (30) days or calendar quarter-end. Consumer purpose loan risk classification is assigned in accordance with the Uniform Retail Credit Classification, based on delinquency and accrual status. The Company’s policies establish concentration limits for various industries within the commercial portfolio as well as commercial real estate and other regulatory categories. Concentration limits are monitored and reassessed on a periodic basis and approved by the Risk Management Committee of the Board of Directors on an annual basis. ACL Rollforward and Analysis . The following tables provide a summary of the activity in the ACL and the reserve for unfunded commitments for the three and six months ended June 30, 2021 and 2020. For the Three Months Ended June 30, 2021 (In thousands) Commercial and Industrial Commercial Real Estate Consumer Total Allowance for Credit Losses Reserve for Unfunded Commitments (1) Total As of March 31, 2021 $ 165,371 $ 111,410 $ 31,256 $ 308,037 $ 1,049 $ 309,086 Provision (release) for credit losses (25,601 ) (25,253 ) (727 ) (51,581 ) (295 ) (51,876 ) Charge-offs (10,218 ) (819 ) (228 ) (11,265 ) — (11,265 ) Recoveries 1,757 577 207 2,541 — 2,541 As of June 30, 2021 $ 131,309 $ 85,915 $ 30,508 $ 247,732 $ 754 $ 248,486 For the Six Months Ended June 30, 2021 (In thousands) Commercial and Industrial Commercial Real Estate Consumer Total Allowance for Credit Losses Reserve for Unfunded Commitments (1) Total As of December 31, 2020 $ 187,365 $ 141,187 $ 38,608 $ 367,160 $ 2,296 $ 369,456 Provision (release) for credit losses (35,194 ) (55,364 ) (8,038 ) (98,596 ) (1,542 ) (100,138 ) Charge-offs (24,343 ) (1,219 ) (374 ) (25,936 ) — (25,936 ) Recoveries 3,481 1,311 312 5,104 — 5,104 As of June 30, 2021 $ 131,309 $ 85,915 $ 30,508 $ 247,732 $ 754 $ 248,486 Allocation of ending ACL Loans collectively evaluated $ 109,261 $ 85,915 $ 30,508 $ 225,684 Loans individually evaluated 22,048 — — 22,048 ACL as of June 30, 2021 $ 131,309 $ 85,915 $ 30,508 $ 247,732 Loans (amortized cost) Loans collectively evaluated $ 6,204,732 $ 2,867,972 $ 2,461,842 $ 11,534,546 Loans individually evaluated 84,957 12,771 2,228 99,956 Loans as of June 30, 2021 $ 6,289,689 $ 2,880,743 $ 2,464,070 $ 11,634,502 (1) The reserve for unfunded commitments is included in other liabilities on the consolidated balance sheets. For the Three Months Ended June 30, 2020 (In thousands) Commercial and Industrial Commercial Real Estate Consumer Total Allowance for Credit Losses Reserve for Unfunded Commitments (1) Total As of March 31, 2020 $ 154,585 $ 53,418 $ 37,243 $ 245,246 $ 3,222 $ 248,468 Provision for credit losses 95,325 59,359 3,522 158,206 605 158,811 Charge-offs (32,816 ) (327 ) (309 ) (33,452 ) — (33,452 ) Recoveries 702 30 169 901 — 901 As of June 30, 2020 $ 217,796 $ 112,480 $ 40,625 $ 370,901 $ 3,827 $ 374,728 For the Six Months Ended June 30, 2020 (In thousands) Commercial and Industrial Commercial Real Estate Consumer Total Allowance for Credit Losses Reserve for Unfunded Commitments (1) Total As of December 31, 2019 $ 89,796 $ 15,319 $ 14,528 $ 119,643 $ 1,699 $ 121,342 Cumulative effect of adoption of CECL 32,951 20,599 22,300 75,850 332 76,182 As of January 1, 2020 122,747 35,918 36,828 195,493 2,031 197,524 Provision for credit losses 159,008 77,158 4,278 240,444 1,796 242,240 Charge-offs (64,803 ) (806 ) (941 ) (66,550 ) — (66,550 ) Recoveries 844 210 460 1,514 — 1,514 As of June 30, 2020 $ 217,796 $ 112,480 $ 40,625 $ 370,901 $ 3,827 $ 374,728 Allocation of ending ACL Loans collectively evaluated $ 189,085 $ 111,945 $ 40,625 $ 341,655 Loans individually evaluated 28,711 535 — 29,246 ACL as of June 30, 2020 $ 217,796 $ 112,480 $ 40,625 $ 370,901 Loans (amortized cost) Loans collectively evaluated $ 7,918,246 $ 2,954,091 $ 2,615,866 $ 13,488,203 Loans individually evaluated 185,597 22,833 2,464 210,894 Loans as of June 30, 2020 (2) $ 8,103,843 $ 2,976,924 $ 2,618,330 $ 13,699,097 (1) The reserve for unfunded commitments is included in other liabilities on the consolidated balance sheets. (2) $48.2 million of net accrued interest receivable is excluded from the loan balances above as of June 30, 2020. The provision for credit losses was a release of $51.9 million and $100.1 million for the three and six months ended June 30, 2021, respectively, which reflects both improvements in credit quality, including C&I – Restaurant and CRE – Hospitality, and the economic forecast used in our ACL model. The Company’s estimate of the ACL used the baseline scenario provided by a nationally recognized service, as adjusted for consideration of certain qualitative and environmental factors. The Company’s individually evaluated loans totaling $ million at June 30, 2021 are considered collateral dependent loans and generally are considered impaired. The majority of these loans are within the C&I segment and include loans in the Energy, Restaurant, and General C&I classes and are supported by an enterprise valuation or by collateral such as real estate, receivables, equipment or inventory. Loans within the CRE and consumer segments are generally secured by commercial and residential real estate. Credit Quality The following table provides information by each credit quality indicator and by origination year (vintage) as of June 30, 2021. The Company defines origination year (vintage) for the purposes of disclosure as the year of execution of the original loan agreement. Loans that are modified as a TDR are considered to be a continuation of the original loan, therefore the origination date of the original loan is reflected as the vintage date. This presentation is consistent with the vintage determination used in the ACL model. The criticized loans with a 2021 vintage relate to credits in resolution. Amortized Cost Basis by Origination Year Revolving Credits (In thousands) 2021 2020 2019 2018 2017 2016 and Prior Revolving Loans Converted to Term Loans Total Commercial and industrial Pass $ 488,137 $ 876,025 $ 492,297 $ 654,883 $ 533,943 $ 735,089 $ 1,991,489 $ 47,017 $ 5,818,880 Special mention 2,537 3,574 39,498 28,084 6,265 8,452 89,362 90 177,862 Substandard 26 22,172 10,389 78,610 24,213 57,172 65,791 12,584 270,957 Doubtful — — — 7,180 8,144 4,000 2,666 — 21,990 Total commercial and industrial 490,700 901,771 542,184 768,757 572,565 804,713 2,149,308 59,691 6,289,689 Commercial real estate Pass 129,109 579,878 471,646 575,216 363,440 470,979 108,167 50 2,698,485 Special mention — 10,162 41 10,383 30,430 12,963 191 — 64,170 Substandard — — 14,455 19,957 39,256 44,222 198 — 118,088 Doubtful — — — — — — — — — Total commercial real estate 129,109 590,040 486,142 605,556 433,126 528,164 108,556 50 2,880,743 Consumer Current 252,357 454,353 361,893 404,200 204,476 535,254 227,461 247 2,440,241 30-59 days past due — 1,106 1,943 1,847 476 6,637 138 — 12,147 60-89 days past due 40 14 211 593 89 333 250 — 1,530 90+ days past due — — 781 3,763 230 5,378 — — 10,152 Total consumer 252,397 455,473 364,828 410,403 205,271 547,602 227,849 247 2,464,070 Total $ 872,206 $ 1,947,284 $ 1,393,154 $ 1,784,716 $ 1,210,962 $ 1,880,479 $ 2,485,713 $ 59,988 $ 11,634,502 Past Due The following tables provide an aging analysis of past due loans by portfolio segment and class of financing receivable. Age Analysis of Past-Due Loans as of June 30, 2021 90+ Days (In thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Current Total Past Due and Accruing Commercial and industrial General C&I $ 6,512 $ 2,661 $ 8,492 $ 17,665 $ 3,808,666 $ 3,826,331 $ 353 Energy — — 8,906 8,906 1,226,356 1,235,262 — Restaurant 9,123 74 4,496 13,693 766,153 779,846 — Healthcare 114 223 125 462 447,788 448,250 — Total commercial and industrial 15,749 2,958 22,019 40,726 6,248,963 6,289,689 353 Commercial real estate Industrial, retail, and other 7,912 3,571 2,218 13,701 1,726,443 1,740,144 50 Multifamily — 359 — 359 759,523 759,882 — Office — 54 7,120 7,174 373,543 380,717 — Total commercial real estate 7,912 3,984 9,338 21,234 2,859,509 2,880,743 50 Consumer Residential 12,138 1,041 10,131 23,310 2,350,051 2,373,361 585 Other 9 489 21 519 90,190 90,709 — Total consumer 12,147 1,530 10,152 23,829 2,440,241 2,464,070 585 Total $ 35,808 $ 8,472 $ 41,509 $ 85,789 $ 11,548,713 $ 11,634,502 $ 988 Age Analysis of Past-Due Loans as of December 31, 2020 90+ Days (In thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Current Total Past Due and Accruing Commercial and industrial General C&I $ 4,609 $ 11,653 $ 16,301 $ 32,563 $ 4,388,723 $ 4,421,286 $ 9,130 Energy — — 1,691 1,691 1,308,921 1,310,612 — Restaurant 7,561 302 5,283 13,146 958,516 971,662 — Healthcare 21 229 354 604 546,887 547,491 — Total commercial and industrial 12,191 12,184 23,629 48,004 7,203,047 7,251,051 9,130 Commercial real estate Industrial, retail, and other 12,619 2,884 2,647 18,150 1,665,825 1,683,975 125 Multifamily — 198 — 198 776,296 776,494 — Office 408 — 7,258 7,666 444,973 452,639 — Total commercial real estate 13,027 3,082 9,905 26,014 2,887,094 2,913,108 125 Consumer Residential 16,971 3,695 12,375 33,041 2,419,824 2,452,865 4,625 Other 179 5 — 184 101,921 102,105 — Total consumer 17,150 3,700 12,375 33,225 2,521,745 2,554,970 4,625 Total $ 42,368 $ 18,966 $ 45,909 $ 107,243 $ 12,611,886 $ 12,719,129 $ 13,880 Nonaccrual Status The following table provides information about nonaccruing loans by portfolio segment and class of financing receivable as of and for the three and six months ended June 30, 2021. Nonaccrual Loans - Amortized Cost (1) 90+ Days Interest Income Recognized (In thousands) December 31, 2020 June 30, 2021 No Allowance Recorded Past Due and Accruing (2) Three Months Ended June 30, 2021 Six Months Ended June 30, 2021 Commercial and industrial General C&I $ 34,363 $ 40,901 $ 3,105 $ 353 $ 111 $ 137 Energy 20,241 22,100 11,613 — 38 39 Restaurant 53,856 28,597 2,533 — 119 120 Healthcare 951 659 — — — 497 Total commercial and industrial 109,411 92,257 17,251 353 268 793 Commercial real estate Industrial, retail, and other 7,301 5,992 3,570 50 34 120 Multifamily — — — — — — Office 7,258 8,565 8,565 — 116 187 Total commercial real estate 14,559 14,557 12,135 50 150 307 Consumer Residential 14,028 15,682 1,552 585 125 239 Other 4 21 — — 8 10 Total consumer 14,032 15,703 1,552 585 133 249 Total $ 138,002 $ 122,517 $ 30,938 $ 988 $ 551 $ 1,349 (1) Nonperforming loans do not include nonperforming loans held for sale of $0.2 million at December 31, 2020. (2) Less than $0.1 million of net accrued interest receivable is excluded from the loan balances above as of June 30, 2021. Loans Modified into TDRs The Company attempts to work with borrowers when necessary to extend or modify loan terms to better align with the borrower’s ability to repay. Extensions and modifications to loans are made in accordance with internal policies and guidelines which conform to regulatory guidance. Each occurrence is unique to the borrower and is evaluated separately. The Bank considers regulatory guidelines when restructuring loans to ensure that prudent lending practices are followed. Qualifying criteria and payment terms are structured by the borrower’s current and prospective ability to comply with the modified terms of the loan. A modification is classified as a TDR if the borrower is experiencing financial difficulty and it is determined that the Company has granted a concession to the borrower. The Company may determine that a borrower is experiencing financial difficulty if the borrower is currently in default on any of its debt, or if it is probable that a borrower may default in the foreseeable future without the modification. Concessions could include reductions of interest rates at a rate lower than current market rate for a new loan with similar risk, extension of the maturity date, reduction of accrued interest, principal forgiveness, forbearance, or other concessions. The assessments of whether a borrower is experiencing or will likely experience financial difficulty and whether a concession has been granted is highly subjective in nature, and management’s judgment is required when determining whether a modification is classified as a TDR. All TDRs are individually evaluated to measure the amount of any ACL. The TDR classification may be removed if the borrower demonstrates compliance with the modified terms and the restructuring agreement specifies an interest rate equal to that which would be provided to a borrower with similar credit at the time of restructuring. The following table provides information regarding loans that were modified as TDRs during the periods indicated. For the Three Months Ended June 30, 2021 2020 (Dollars in thousands) Number of TDRs Amortized Cost (1) Number of TDRs Amortized Cost Commercial and industrial General C&I 1 $ 15,836 — $ — Energy 1 10,499 — — Restaurant 1 7,306 — — Total 3 $ 33,641 — $ — (1) There was less than $0.1 million of net accrued interest receivable recorded on the loan balances above as of June 30, 2021. For the Six Months Ended June 30, 2021 2020 (Dollars in thousands) Number of TDRs Amortized Cost (1) Number of TDRs Amortized Cost (1) Commercial and industrial General C&I 1 $ 15,836 3 $ 19,366 Energy 1 10,499 1 8,140 Restaurant 1 7,306 2 24,246 Commercial real estate Industrial, retail, and other 1 2,354 — — Total 4 $ 35,995 6 $ 51,752 (1) There was less than $0.1 million of net accrued interest receivable recorded on the loan balances above as of both June 30, 2021 and 2020. For the three and six months ended June 30, 2021 and 2020 , the Company had no TDRs for which there was a payment default within the 12 months following the restructure date. During the three and six months ended June 30, 2021 , approximately $5 thousand and $ million in charge-offs were taken related to one general C&I loan and two energy loan s that w ere modified into a TDR during the same period. During the three and six months ended June 30, 2020 , approximately $ 12.4 million and $ million in charge-offs were taken related to one restaurant loan and three general C&I loans that were modified into a TDR during the same period. The following table provides information regarding the types of loan modifications that were modified into TDRs during the periods indicated. For the Three Months Ended June 30, 2021 2020 Number of Loans Modified by: Rate Concession Modified Terms and/or Other Concessions Rate Concession Modified Terms and/or Other Concessions Commercial and industrial General C&I — 1 — — Energy — 1 — — Restaurant — 1 — — Total — 3 — — For the Six Months Ended June 30, 2021 2020 Number of Loans Modified by: Rate Concession Modified Terms and/or Other Concessions Rate Concession Modified Terms and/or Other Concessions Commercial and industrial General C&I — 1 — 3 Energy — 1 1 — Restaurant — 1 — 2 Commercial real estate Industrial, retail, and other — 1 — — Total — 4 1 5 Residential Mortgage Loans in Process of Foreclosure  Included in loans are $1.4 million and $1.6 million of consumer loans secured by single-family residential real estate that are in process of foreclosure at June 30, 2021 and December 31, 2020, respectively. During 2020, we ceased foreclosure activities on residential real estate due to the COVID-19 pandemic. The moratorium on residential foreclosures was extended through September 30, 2021. Loans in process of foreclosure include those for which formal foreclosure proceedings are in process according to local requirements of the applicable jurisdiction. In addition to the single-family residential real estate loans in process of foreclosure, the Company also held $21 thousand and $49 thousand of foreclosed single-family residential properties in other real estate owned as of June 30, 2021 and December 31, 2020

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives	Note 4—Derivatives The Company primarily uses derivatives to manage exposure to market risk, including interest rate risk, credit risk and foreign currency risk, and to assist customers with their risk management objectives. Management will designate certain derivatives as hedging instruments in a qualifying hedge accounting relationship. The Company’s remaining derivatives consist of economic hedges that do not qualify for hedge accounting and derivatives held for customer accommodation, or other purposes. The fair value of derivative positions outstanding is included in “other assets” and “other liabilities” on the accompanying consolidated balance sheets and in the net change in each of these financial statement line items in the accompanying consolidated statements of cash flows. For derivatives not designated as hedging instruments, gains and losses due to changes in fair value are included in noninterest income and the operating section of the consolidated statement of cash flows. For derivatives designated as hedging instruments, the entire change in the fair value related to the derivative instrument is recognized as a component of other comprehensive income and subsequently reclassified into interest income when the forecasted transaction affects income. The notional amounts and estimated fair values as of June 30, 2021 and December 31, 2020 were as follows: June 30, 2021 December 31, 2020 Fair Value Fair Value (In thousands) Notional Amount Other Assets Other Liabilities Notional Amount Other Assets Other Liabilities Derivatives designated as hedging instruments (cash flow hedges): Commercial loan interest rate swaps $ 350,000 $ 13,263 $ — $ 350,000 $ 22,560 $ — Total derivatives designated as hedging instruments 350,000 13,263 — 350,000 22,560 — Derivatives not designated as hedging instruments: Commercial loan interest rate swaps 1,299,146 16,162 2,002 1,200,581 20,699 1,647 Commercial loan interest rate caps 176,015 9 9 162,479 4 4 Commercial loan interest rate floors 560,272 8,381 8,381 560,048 11,986 11,986 Commercial loan interest rate collars — — — 66,665 305 305 Mortgage loan held-for-sale interest rate lock commitments 16,192 261 — 33,458 531 — Mortgage loan forward sale commitments 4,268 47 — 11,081 112 — Mortgage loan held-for-sale floating commitments 2,421 — — 4,206 — — Foreign exchange contracts 69,335 1,399 1,219 89,707 780 1,058 Total derivatives not designated as hedging instruments 2,127,648 26,259 11,611 2,128,225 34,417 15,000 Total derivatives $ 2,477,648 $ 39,522 $ 11,611 $ 2,478,225 $ 56,977 $ 15,000 The Company is party to collateral support agreements with certain derivative counterparties. Such agreements require that the Company or the counterparty to maintain collateral based on the fair values of derivative transactions. In the event of default by a counterparty the non-defaulting counterparty would be entitled to the collateral. At June 30, 2021 and December 31, 2020, the Company was required to post $8.2 million and $11.4 million, respectively, in cash or securities as collateral for its derivative transactions, which are included in “interest-bearing deposits with banks” on the Company’s consolidated balance sheets. In addition, the Company had recorded the obligation to return cash collateral provided by a counterparty of $11.3 million as of June 30, 2021 within deposits on the Company’s consolidated balance sheet. The Company’s master agreements represent written, legally enforceable bilateral agreements that (1) create a single legal obligation for all individual transactions covered by the master agreement and (2) in the event of default, provide the non-defaulting counterparty the right to accelerate, terminate, and close-out on a net basis all transactions under the agreement and to promptly liquidate or set-off collateral posted by the defaulting counterparty. As permitted by U.S. GAAP, the Company does not offset fair value amounts for the right to reclaim cash collateral or the obligation to return cash collateral against fair value amounts of derivatives executed with the same counterparty under the master agreement. The Company records pre-tax gains and losses for derivatives not designated as hedging instruments in noninterest income on the consolidated statements of operations. For the three months ended June 30, 2021 and 2020, mortgage loans held for sale interest rate lock commitments incurred gains of $12 thousand compared to $215 thousand, respectively. For the six months ended June 30, 2021 and 2020, mortgage loans held for sale interest rate lock commitments incurred losses totaling $270 thousand compared to gains totaling $526 thousand, respectively. Foreign exchange contract gains total $1.0 million compared to $687 thousand for the three months ended June 30, 2021 and 2020, respectively. Foreign exchange contract gains totaled $2.1 million and $1.6 million for the six months ended June 30, 2021 and 2020, respectively. Pre-tax For the Three Months Ended June 30, 2021 2020 (In thousands) OCI Reclassified from AOCI to interest income OCI Reclassified from AOCI to interest income Derivatives designated as hedging instruments (cash flow hedges): Commercial loan interest rate swaps $ 2,838 $ 1,318 $ 4,046 $ 981 Commercial loan interest rate collars — 9,466 — 16,714 For the Six Months Ended June 30, 2021 2020 (In thousands) OCI Reclassified from AOCI to interest income OCI Reclassified from AOCI to interest income Derivatives designated as hedging instruments (cash flow hedges): Commercial loan interest rate swaps $ (6,695 ) $ 2,602 $ 28,081 $ 876 Commercial loan interest rate collars — 22,278 143,199 24,926 Cash Flow Hedges Cash flow hedge relationships mitigate exposure to the variability of future cash flows or other forecasted transactions. The Company uses interest rate swaps, caps, floors and collars to manage overall cash flow changes related to interest rate risk exposure on benchmark interest rate loans (1-Month LIBOR). In March 2020, a notional interest rate collar of $4.0 billion was terminated, resulting in a $261.2 million realized gain initially recorded in other comprehensive income (“OCI”) net of deferred income taxes. The gain was forecast to reclass out of OCI and amortize into interest income through February 29, 2024 based on a continuing expectation of an adequate number of hedge-eligible loans. Due to the economic impacts of the COVID-19 pandemic, the hedge was given the accounting designation of partial ineffectiveness due to a forecasted shortfall of hedge-eligible loans which began in the fourth quarter of 2020 and continuing throughout the remaining term of the original hedge. As a result, during the fourth quarter of 2020, an accelerated hedge revenue of $169.2 million was recognized. Additional information is discussed in Note 7 of the Annual Report on Form 10-K for the year ended December 31, 2020. Based on our current interest rate forecast, $18.1 Interest Rate Agreements not designated as hedging derivatives The Company enters into certain interest rate swap, floor, cap and collar agreements on commercial loans that are not designated as hedging instruments. These derivative contracts relate to transactions in which the Company enters into an interest rate swap, floor, cap or collar with a loan customer while at the same time entering into an offsetting interest rate agreement with another financial institution. In connection with each swap transaction, the Company agrees to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on a similar notional amount at a fixed interest rate. At the same time, the Company agrees to pay another financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The interest rate swap transaction allows the Company’s customer to effectively convert a variable rate loan to a fixed rate. The interest rate cap transaction allows the Company’s customer to minimize interest rate risk exposure to rising interest rates. Because the Company acts as an intermediary for its customer, changes in the fair value of the underlying derivative contracts for the most part offset each other and do not significantly impact the Company’s consolidated statements of operations. The Company is exposed to credit loss in the event of nonperformance by the parties to the interest rate agreements. However, the Company does not anticipate nonperformance by the counterparties. The estimated fair value has been recorded as an asset and a corresponding liability in the accompanying consolidated balance sheets as of June 30, 2021 and December 31, 2020.

Deposits

Deposits	6 Months Ended
	Jun. 30, 2021
Deposits [Abstract]
Deposits	Note 5—Deposits Domestic time deposits $250,000 and over were $445.0 million and $486.3 million at June 30, 2021 and December 31, 2020, respectively.

Borrowed Funds

Borrowed Funds	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Borrowed Funds	Note 6—Borrowed Funds Senior and Subordinated Debt Our outstanding senior and subordinated debt consists of the following: (In thousands) June 30, 2021 December 31, 2020 Cadence Bancorporation: 5.375% senior notes, due June 28, 2021 $ — $ 50,000 7.250% subordinated notes, due June 28, 2029, callable in 2024 35,000 35,000 3-month LIBOR plus 4.884%, subordinated notes, due March 11, 2025, callable in 2020 — 40,000 4.750% subordinated notes, due June 30, 2029, callable in 2024 85,000 85,000 Total — Cadence Bancorporation 120,000 210,000 Cadence Bank: 6.250% subordinated notes, due June 28, 2029, callable in 2024 25,000 25,000 Debt issue costs and unamortized premium (1,341 ) (1,670 ) Total senior and subordinated debt $ 143,659 $ 233,330 Details on the outstanding senior and subordinated debt are discussed in Note 10 of the Annual Report on Form 10-K for the year ended December 31, 2020. On March 11, 2021, the Company called the $40 million fixed-to-floating rate subordinated notes due on March 11, 2025. On June 28, 2021, the senior notes totaling $50 million with a fixed rate of 5.375% matured and were repaid. The Company’s outstanding senior notes are unsecured, unsubordinated obligations and are equal in right of payment to all the Company’s other unsecured debt. The Company’s subordinated notes are unsecured obligations and are subordinated in right of payment to all the Company’s senior indebtedness and general creditors and to depositors of the Bank. The Company’s senior and subordinated notes are not guaranteed by any subsidiary of the Company, including the Bank. The Bank’s subordinated notes are unsecured obligations and are subordinated in right of payment to all the Bank’s senior indebtedness and general creditors and to depositors of the Bank. The Bank’s subordinated notes are not guaranteed by the Company or any subsidiary of the Bank. Payment of principal on the Company’s and Bank’s subordinated notes may be accelerated by holders of such subordinated notes only in the case of certain insolvency events. There is no right of acceleration under the subordinated notes in the case of default. The Company and/or the Bank may be required to obtain the prior written approval of the Federal Reserve, and, in the case of the Bank, the OCC, before it may repay the subordinated notes issued thereby upon acceleration or otherwise. Junior Subordinated Debentures Our junior subordinated debt consists of the following: (In thousands) June 30, 2021 December 31, 2020 Junior subordinated debentures, 3-month LIBOR plus 2.85%, due 2033 $ 30,000 $ 30,000 Junior subordinated debentures, 3-month LIBOR plus 2.95%, due 2033 5,155 5,155 Junior subordinated debentures, 3-month LIBOR plus 1.75%, due 2037 15,464 15,464 Total par value 50,619 50,619 Purchase accounting adjustment, net of amortization (12,867 ) (12,982 ) Total junior subordinated debentures $ 37,752 $ 37,637 Advances from FHLB Outstanding FHLB advances were $100 million as of June 30, 2021 and December 31, 2020. At June 30, 2021, the outstanding advance was a long-term convertible advance. Advances and letters of credit outstanding are collateralized by $3.6 billion of commercial and residential real estate loans pledged under a blanket lien arrangement as of June 30, 2021. At June 30, 2021, there remained $1.0 billion of borrowing availability. As of June 30, 2021 and December 31, 2020, the FHLB has issued for the benefit of the Bank irrevocable letters of credit with outstanding balances of $663 million and $1.3 billion, respectively. The FHLB letters of credit are variable letters of credit in favor of municipal customers to secure certain deposits. Of the $663 million in letters of credit, $312 million expired on July 6, 2021, $300 million will expire on November 30, 2021, and the remaining $51 million will expire on December 31, 2021.

Other Noninterest Income and Ot

Other Noninterest Income and Other Noninterest Expense	6 Months Ended
	Jun. 30, 2021
Other Nonoperating Income Expense [Abstract]
Other Noninterest Income and Other Noninterest Expense	Note 7—Other Noninterest Income and Other Noninterest Expense The detail of other noninterest income and other noninterest expense captions presented in the consolidated statements of operations is as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2021 2020 2021 2020 Other noninterest income Insurance revenue $ 287 $ 225 $ 558 $ 474 Income from bank owned life insurance policies 1,802 1,220 3,376 2,549 Other 6,022 (1,373 ) 10,706 (1,953 ) Total other noninterest income $ 8,111 $ 72 $ 14,640 $ 1,070 Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2021 2020 2021 2020 Other noninterest expenses Data processing expense $ 3,179 $ 3,084 $ 6,438 $ 6,436 Software amortization 4,950 4,036 9,457 7,583 Consulting and professional fees 3,736 3,009 6,969 5,715 Loan related expenses 754 735 1,550 1,495 FDIC insurance 1,656 3,939 3,121 6,374 Communications 1,281 1,002 2,524 2,158 Advertising and public relations 1,487 920 2,414 2,384 Legal expenses 594 579 1,518 991 Other 7,998 8,052 17,036 19,688 Total other noninterest expenses $ 25,635 $ 25,356 $ 51,027 $ 52,824

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Note 8—Income Taxes Income tax expense (benefit) for the three and six months ended June 30, 2021 was $29.5 million and $60.0 million, respectively, compared to a benefit of $(6.7) million and $(39.9) million for the same periods in 2020. The effective tax rate was 22.6% and 22.4% for the three and six months ended June 30, 2021, respectively, compared to 10.6% and 8.1% for the same periods in 2020. The increase in the effective tax rate for the three and six months ended June 30, 2021, primarily resulted from higher pre-tax income in the current periods. The effective tax rate for the three and six months ended June 30, 2020 was driven by a decrease in income before income taxes. The effective tax rate is primarily affected by the amount of pre-tax income, and to a lesser extent, tax-exempt interest income, and the increase in cash surrender value of bank-owned life insurance. The effective tax rate is also affected by discrete items that may occur in any given period but are not consistent from period-to-period, which may impact the comparability of the effective tax rate between periods. At June 30, 2021 , we had a net deferred tax asset of $ million, compared to $ million at December 31, 2020 . The de crease in the deferred asset was primarily due to the tax effect s of the releas e for credit losses recorded during 2021, partially mitigated by the decrease in unrealized gains on securities available-for-sale .

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Common Share	Note 9—Earnings Per Common Share The following table displays a reconciliation of the information used in calculating basic and diluted net income (loss) per common share for the three and six months ended June 30, 2021 and 2020. Three Months Ended June 30, Six Months Ended June 30, (In thousands, except share and per share data) 2021 2020 2021 2020 Net income (loss) per consolidated statements of operations $ 101,309 $ (56,114 ) $ 207,734 $ (455,425 ) Net income allocated to participating securities (734 ) — (1,509 ) — Net income (loss) allocated to common stock $ 100,575 $ (56,114 ) $ 206,225 $ (455,425 ) Weighted average common shares outstanding (Basic) 124,732,617 125,924,652 124,904,976 126,277,549 Weighted average dilutive restricted stock units 816,177 — 679,218 — Weighted average common shares outstanding (Diluted) 125,548,794 125,924,652 125,584,194 126,277,549 Earnings (loss) per common share (Basic) $ 0.81 $ (0.45 ) $ 1.65 $ (3.61 ) Earnings (loss) per common share (Diluted) $ 0.80 $ (0.45 ) $ 1.64 $ (3.61 ) The computations of diluted earnings per share do not include the effect from the assumed exercise of stock options and restricted stock units which would have had an antidilutive effect on earnings per common share. There were 169,800 and 170,642 antidilutive stock options and restricted stock units for the three and six months ended June 30, 2021, respectively, compared to 3,098,998 and 2,805,761 antidilutive stock options and restricted stock units for the three and six months ended June 30, 2020, respectively.

Regulatory Matters

Regulatory Matters	6 Months Ended
	Jun. 30, 2021
Banking And Thrifts [Abstract]
Regulatory Matters	Note 10—Regulatory Matters Cadence and Cadence Bank are each required to comply with regulatory capital requirements established by federal and state banking agencies. Failure to meet minimum capital requirements can subject the Company and the Bank to certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. These regulatory capital requirements involve quantitative measures of the Company’s assets, liabilities and certain off-balance sheet items, and qualitative judgments by the regulators. Quantitative measures established by regulation to ensure capital adequacy require institutions to maintain minimum ratios of common equity Tier 1, Tier 1, and total capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 capital to average tangible assets (the “Leverage” ratio). During 2020, the federal banking agencies issued a final rule to delay the estimated impact on regulatory capital stemming from the adoption of CECL. The agencies granted this relief to allow institutions to focus on lending to customers in light of the strains on the U.S economy due to COVID-19, while also maintaining the quality of regulatory capital. Under the final rule, 100% of the CECL Day 1 impact and 25% of subsequent provisions for credit losses (“Day 2” impacts) are deferred over a two-year year period ending January 1, 2022, at which time this deferred amount will be phased in on a pro rata basis over a three-year period ending January 2025. The actual capital ratios for the Company and the Bank as of June 30, 2021 and December 31, 2020 are presented in the following table and as shown, are above the thresholds necessary to be considered “well-capitalized.” Management believes that no events or changes have occurred after June 30, 2021 that would change this designation. Consolidated Company Bank June 30, 2021 December 31, 2020 June 30, 2021 December 31, 2020 Tier 1 leverage 11.4 % 10.9 % 11.6 % 11.3 % Common equity tier 1 capital 14.7 14.0 14.7 14.1 Tier 1 risk-based capital 14.7 14.0 15.0 14.5 Total risk-based capital 17.0 16.7 16.2 15.9 Under regulations controlling national banks, the payment of any dividends by a bank without prior approval of the OCC is limited to the current year’s net profits (as defined by the OCC) and retained net profits of the two preceding years. Due to the effects of the recognition of the non-cash goodwill impairment charge in the first quarter of 2020 to the Bank’s retained profits and the net loss incurred in the second quarter of 2020, the Bank is currently required to seek prior approval of the OCC to pay dividends to the holding company. The Federal Reserve, as primary regulator for bank holding companies, has also stated that all common stock dividends should be paid out of current income. Additionally, on July 24, 2020, the Federal Reserve amended its supervisory guidance and regulations addressing dividends from bank holding companies to require consultation with the Federal Reserve prior to paying a dividend that exceeds earnings for the period for which the dividend is being paid. T he holding company had $ million in cash on hand as of June 30, 2021 . The company repaid the $ 50 million in senior notes that matured on June 28, 2021 . While the holding company cash level is currently significant, the holding company does not generate income on a stand-alone basis, and other than raising cash from capital or debt markets, the holding company’s future cash level is dependent upon receiving dividends from the Bank.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Note 11—Commitments and Contingent Liabilities The consolidated financial statements do not reflect various commitments and contingent liabilities which arise in the normal course of banking business and which involve elements of credit risk, interest rate risk, and liquidity risk. The commitments and contingent liabilities are commitments to extend credit, home equity lines, overdraft protection lines, and standby and commercial letters of credit. Such financial instruments are recorded when they are funded. A summary of commitments and contingent liabilities is as follows: (In thousands) June 30, 2021 December 31, 2020 Commitments to extend credit $ 4,652,103 $ 4,344,268 Commitments to grant loans 252,835 154,507 Standby letters of credit 270,086 216,741 Performance letters of credit 18,123 16,065 Commercial letters of credit 13,261 21,156 Commitments to extend credit and letters of credit include some exposure to credit loss in the event of nonperformance of the customer. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. In addition, the Company has entered certain contingent commitments to grant loans. Standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. The credit policies and procedures for such commitments are the same as those used for lending activities. Because these instruments have fixed maturity dates and because a number expire without being drawn upon, they generally do not present any significant liquidity risk. No significant losses on commitments were incurred during the three and six months ended June 30, 2021 and 2020. The Company makes investments in limited partnerships, including certain low-income housing partnerships for which tax credits are received. As of June 30, 2021 and December 31, 2020, The Company and the Bank are defendants in various pending and threatened legal actions arising in the normal course of business. In the opinion of management, based upon the advice of legal counsel, the ultimate disposition of all pending and threatened legal action will not have a material effect on the Company’s consolidated financial statements.

Disclosure About Fair Values of

Disclosure About Fair Values of Financial Instruments	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Disclosure About Fair Values of Financial Instruments	Note 12—Disclosure About Fair Values of Financial Instruments See Note 17 to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2020 for a description of valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis. Assets and Liabilities Recorded at Fair Value on a Recurring Basis The table below presents the Company’s assets and liabilities measured at fair value on a recurring basis categorized by the level of inputs used in the valuation of each asset at June 30, 2021 and December 31, 2020: (In thousands) Carrying Value (Level 1) (Level 2) (Level 3) June 30, 2021 Assets Investment securities available-for-sale $ 4,277,448 $ — $ 4,277,448 $ — Derivative assets 39,522 — 39,522 — Other assets 47,513 — — 47,513 Total recurring basis measured assets $ 4,364,483 $ — $ 4,316,970 $ 47,513 Liabilities Derivative liabilities $ 11,611 $ — $ 11,611 $ — Total recurring basis measured liabilities $ 11,611 $ — $ 11,611 $ — (In thousands) Carrying Value (Level 1) (Level 2) (Level 3) December 31, 2020 Assets Investment securities available-for-sale $ 3,332,168 $ — $ 3,332,168 $ — Derivative assets 56,977 — 56,977 — Other assets 38,758 — — 38,758 Total recurring basis measured assets $ 3,427,903 $ — $ 3,389,145 $ 38,758 Liabilities Derivative liabilities $ 15,000 $ — $ 15,000 $ — Total recurring basis measured liabilities $ 15,000 $ — $ 15,000 $ — Changes in Level 3 Fair Value Measurements The tables below include a roll-forward of the consolidated balance sheet amounts for the three and six months ended June 30, 2021 and 2020 for changes in the fair value of financial instruments within Level 3 of the valuation hierarchy that are recorded on a recurring basis. Level 3 financial instruments typically include unobservable components but may also include some observable components that may be validated to external sources. The gains or (losses) in the following table (which are reported in other noninterest income in the consolidated statements of operations) may include changes to fair value due in part to observable factors that may be part of the valuation methodology. Level 3 Assets Measured at Fair Value on a Recurring Basis For the Three Months Ended June 30, 2021 2020 2021 2020 2021 2020 (In thousands) Net Profits Interests Investments in Limited Partnerships SBA Servicing Rights Beginning Balance $ 3,282 $ 4,071 $ 32,480 $ 24,042 $ 4,931 $ 3,942 Originations — — — — 664 261 Net (losses) gains included in earnings (51 ) (338 ) 2,426 (1,015 ) 321 (466 ) Reclassifications — — — 1,203 — — Contributions paid — — 5,747 499 — — Distributions received (144 ) — (2,143 ) (98 ) — — Ending Balance $ 3,087 $ 3,733 $ 38,510 $ 24,631 $ 5,916 $ 3,737 Net unrealized (losses) gains included in earnings relating to assets held at the end of the period $ (51 ) $ (338 ) $ 2,426 $ (1,015 ) $ 321 $ (466 ) Net unrealized gains (losses) recognized in other comprehensive income relating to assets held at the end of the period $ — $ — $ — $ — $ — $ — For the Six Months Ended June 30, 2021 2020 2021 2020 2021 2020 (In thousands) Net Profits Interests Investments in Limited Partnerships SBA Servicing Assets Beginning Balance $ 3,282 $ 4,330 $ 30,902 $ 18,742 $ 4,574 $ 3,810 Originations — — — — 1,051 561 Net (losses) gains included in earnings (51 ) (597 ) 4,212 (1,331 ) 291 (634 ) Reclassifications — — (2 ) 1,727 — — Acquired in settlement of loans — — — 4,257 — — Contributions paid — — 7,553 1,783 — — Distributions received (144 ) — (4,155 ) (547 ) — — Ending Balance $ 3,087 $ 3,733 $ 38,510 $ 24,631 $ 5,916 $ 3,737 Net unrealized (losses) gains included in earnings relating to assets held at the end of the period $ (51 ) $ (597 ) $ 4,212 $ (1,331 ) $ 291 $ (634 ) Net unrealized gains (losses) recognized in other comprehensive income relating to assets held at the end of the period $ — $ — $ — $ — $ — $ — Assets Recorded at Fair Value on a Nonrecurring Basis From time to time, the Company may be required to measure certain other financial assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower of cost or fair value accounting or write-downs of individual assets. For assets measured at fair value on a nonrecurring basis which were still held on the balance sheets at June 30, 2021 and December 31, 2020, the following tables provide the level of valuation assumptions used to determine each adjustment and the related carrying value: (In thousands) Carrying Value (Level 1) (Level 2) (Level 3) June 30, 2021 Loans held for sale $ 35,209 $ — $ 35,209 $ — Individually evaluated loans, net of allocated allowance for credit losses 77,907 — — 77,907 Other real estate and repossessed assets 5,466 — 5,466 Total assets measured on a nonrecurring basis $ 118,582 $ — $ 35,209 $ 83,373 (In thousands) Carrying Value (Level 1) (Level 2) (Level 3) December 31, 2020 Loans held for sale $ 47,018 $ — $ 47,018 $ — Individually evaluated loans, net of allocated allowance for credit losses 87,084 — — 87,084 Other real estate 6,517 — — 6,517 Total assets measured on a nonrecurring basis $ 140,619 $ — $ 47,018 $ 93,601 Significant unobservable inputs used in Level 3 fair value measurements for financial assets measured at fair value on a nonrecurring basis are summarized below: Quantitative Information about Level 3 Fair Value Measurements (In thousands) Carrying Value Valuation Methods Unobservable Inputs Range Weighted Average (1) June 30, 2021 Individually evaluated loans, net of allowance for credit losses $ 77,907 Appraised value, as adjusted Discount to fair value 0% - 75% 35% Discounted cash flow Discount rate 11% - 15% 12% Enterprise value Comparables and average multiplier 1.8x - 6.7x 6.08x Other real estate and repossessed assets 5,466 Appraised value, as adjusted Discount to fair value 0% - 20% 10% Estimated closing costs 10% 10% Quantitative Information about Level 3 Fair Value Measurements (In thousands) Carrying Value Valuation Methods Unobservable Inputs Range Weighted Average (1) December 31, 2020 Individually evaluated loans, net of allowance for credit losses $ 87,084 Appraised value, as adjusted Discount to fair value 0% - 72% 32% Discounted cash flow Discount rate 3.75% - 3.91% 4% Enterprise value Comparables and average multiplier 4.5x - 6.47x 4.95x Enterprise value Discount rates and comparables 9%-15% 12% Other real estate and repossessed assets 6,517 Appraised value, as adjusted Discount to fair value 0% - 20% 10% Estimated closing costs 10% 10% (1) The estimated fair values of the Company’s financial instruments are as follows: June 30, 2021 (In thousands) Carrying Amount Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from banks $ 233,534 $ 233,534 $ 233,534 $ — $ — Interest-bearing deposits in other banks 1,861,886 1,861,886 1,861,886 — — Federal funds sold 4,679 4,679 4,679 — — Investment securities available-for-sale 4,277,448 4,277,448 — 4,277,448 — Loans held for sale 35,209 35,209 — 35,209 — Net loans 11,386,770 11,545,560 — — 11,545,560 Derivative assets 39,522 39,522 — 39,522 — Other assets 107,492 107,492 — — 107,492 Financial Liabilities: Deposits 15,983,808 15,988,606 — 15,988,606 — Advances from FHLB 100,000 100,000 — 100,000 — Subordinated debt 143,659 155,565 — 155,565 — Junior subordinated debentures 37,752 48,047 — 48,047 — Notes payable 1,277 1,277 — 1,277 — Derivative liabilities 11,611 11,611 — 11,611 — December 31, 2020 (In thousands) Carrying Amount Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from banks $ 283,261 $ 283,261 $ 283,261 $ — $ — Interest-bearing deposits in other banks 1,768,847 1,768,847 1,768,847 — — Federal funds sold 1,838 1,838 1,838 — — Investment securities available-for-sale 3,332,168 3,332,168 — 3,332,168 — Loans held for sale 47,018 47,018 — 47,018 — Net loans 12,351,969 12,529,458 — — 12,529,458 Derivative assets 56,977 56,977 — 56,977 — Other assets 96,838 96,838 — — 96,838 Financial Liabilities: Deposits 16,052,245 16,059,358 — 16,059,358 — Advances from FHLB 100,000 100,000 — 100,000 — Senior debt 49,986 50,439 — 50,439 — Subordinated debt 183,344 191,438 — 191,438 — Junior subordinated debentures 37,637 42,745 — 42,745 — Notes payable 1,702 1,702 — 1,702 — Derivative liabilities 15,000 15,000 — 15,000 —

Variable Interest Entities and

Variable Interest Entities and Other Investments	6 Months Ended
	Jun. 30, 2021
Variable Interest Entities And Other Investments [Abstract]
Variable Interest Entities and Other Investments	Note 13—Variable Interest Entities and Other Investments The Bank has invested in several affordable housing projects as a limited partner. The partnerships have qualified to receive annual affordable housing federal tax credits that are recognized as a reduction of current tax expense. The Company has determined that these structures meet the definition of a VIE but that consolidation is not required, as the Bank is not the primary beneficiary. At June 30, 2021 and December 31, 2020, the Bank’s maximum exposure to loss associated with these limited partnerships was limited to the Bank’s investment. The Company accounts for these investments and the related tax credits using either the effective yield method or the proportional amortization method, depending upon the date of the investment. Under the effective yield method, the Bank recognizes the tax credits as they are allocated and amortizes the initial costs of the investments to provide a constant effective yield over the period that the tax credits are allocated. Under the proportional amortization method, the Bank amortizes the cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense. At June 30, 2021 and December 31, 2020, the Company had recorded investments in other assets on its consolidated balance sheets of approximately $35.7 million and $31.5 million, respectively, related to these investments. Additionally, the Company invests in other certain limited partnerships accounted for under the fair value practical expedient of net asset value totaling $38.5 million and $30.9 million as of June 30, 2021 and December 31, 2020, respectively. The Company recognized gains of $2.4 million and $4.2 million for the three and six months ended June 30, 2021, respectively, compared to losses of $1.0 million and $1.3 million for the same periods in 2020, respectively, related to these assets recorded at fair value through net income. Certain other limited partnerships without readily determinable fair values that do not qualify for the practical expedient are accounted for at their cost minus impairment, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. These investments totaled $3.0 million and $7.1 million as of June 30, 2021 and December 31, 2020, respectively. Other limited partnerships are accounted for under the equity method totaling $15.8 million and $14.6 million at June 30, 2021 and December 31, 2020, respectively. The following table presents a summary of the Company’s investments in limited partnerships: (In thousands) June 30, 2021 December 31, 2020 Affordable housing projects (amortized cost) $ 35,716 $ 31,541 Limited partnerships accounted for under the fair value practical expedient of NAV 38,510 30,902 Limited partnerships without readily determinable fair values that do not qualify for the practical expedient of NAV accounted for under the cost method 3,042 7,105 Limited partnerships required to be accounted for under the equity method 15,806 14,646 Total investments in limited partnerships $ 93,074 $ 84,194 Cadence has elected a measurement alternative to fair value for certain equity investments without a readily determinable fair value. As of June 30, 2021 and December 31, 2020, there were no downward and upward adjustments to these investments for impairments or price changes from observable transactions. However, in 2020, there was one investment determined to be fully impaired and a $1.9 million charge was recognized. The carrying amount of equity investments measured under the measurement alternative are as follows: For the Six Months Ended June 30, (In thousands) 2021 2020 Carrying value, Beginning of Year $ 7,105 $ 8,681 Reclassifications 3,103 (1,678 ) Distributions (7,740 ) (440 ) Contributions 574 523 Carrying value, End of Period $ 3,042 $ 7,086 During 2016, the Bank received net profits interests in oil and gas reserves, in connection with the reorganization under bankruptcy of two loan customers (one of these was sold during 2018). The Company has determined that these contracts meet the definition of a VIE but that consolidation is not required as the Bank is not the primary beneficiary. The net profits interests are financial instruments and recorded at estimated fair value, which was $3.1 million at June 30, 2021 compared to $3.3 million at December 31, 2020, representing the maximum exposure to loss as of that date. The Company has established a rabbi trust related to the deferred compensation plan offered to certain of its employees. The Company contributes employee cash compensation deferrals to the trust. The assets of the trust are available to creditors of the Company only in the event the Company becomes insolvent. This trust is considered a VIE because either there is no equity at risk in the trust or because the Company provided the equity interest to its employees in exchange for services rendered. The Company is considered the primary beneficiary of the rabbi trust as it has the ability to select the underlying investments made by the trust, the activities that most significantly impact the economic performance of the rabbi trust. The Company includes the assets of the rabbi trust as a component of other assets and a corresponding liability for the associated benefit obligation in other liabilities in its consolidated balance sheets. The amount of rabbi trust assets and benefit obligation was $4.4 million and $4.0 million at June 30, 2021 and December 31, 2020, respectively.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Segment Reporting	Note 14—Segment Reporting The Company evaluates performance and allocates resources based on profit or loss from operations. Information on the reportable segments is discussed in Note 19 of the Annual Report on Form 10-K for the year ended December 31, 2020. There are no material inter-segment sales or transfers. During the first quarter of 2020, the Company recognized a $443.7 non-cash goodwill impairment charge representing all of the goodwill allocated to the Banking segment. The accounting policies used by each reportable segment are the same as those discussed in Note 1 of the Annual Report on Form 10-K for the year ended December 31, 2020. All costs, except corporate administration and income taxes, have been allocated to the reportable segments. Therefore, combined amounts agree to the consolidated totals. T he following tables present the operating results of the segments as of and for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, 2021 (In thousands) Banking Financial Services Corporate Consolidated Net interest income (expense) $ 141,380 $ (40 ) $ (2,799 ) $ 138,541 Provision (release) for credit losses (51,876 ) — — (51,876 ) Noninterest income 33,038 13,114 322 46,474 Noninterest expense 90,027 9,131 6,908 106,066 Income tax expense (benefit) 31,769 480 (2,733 ) 29,516 Net income (loss) $ 104,498 $ 3,463 $ (6,652 ) $ 101,309 Total assets $ 18,577,862 $ 96,712 $ 18,049 $ 18,692,623 Three Months Ended June 30, 2020 (In thousands) Banking Financial Services Corporate Consolidated Net interest income (expense) $ 158,440 $ (58 ) $ (3,668 ) $ 154,714 Provision for credit losses 158,811 — — 158,811 Noninterest income 18,875 10,966 109 29,950 Noninterest expense 78,982 8,262 1,376 88,620 Income tax (benefit) expense (13,677 ) 377 6,647 (6,653 ) Net (loss) income $ (46,801 ) $ 2,269 $ (11,582 ) $ (56,114 ) Total assets $ 18,760,701 $ 92,638 $ 4,414 $ 18,857,753 Six Months Ended June 30, 2021 (In thousands) Banking Financial Services Corporate Consolidated Net interest income (expense) $ 287,500 $ (87 ) $ (6,123 ) $ 281,290 Provision (release) for credit losses (100,138 ) — — (100,138 ) Noninterest income 63,108 26,375 686 90,169 Noninterest expense 176,894 18,461 8,533 203,888 Income tax expense (benefit) 63,923 864 (4,812 ) 59,975 Net income (loss) $ 209,929 $ 6,963 $ (9,158 ) $ 207,734 Total assets $ 18,577,862 $ 96,712 $ 18,049 $ 18,692,623 Six Months Ended June 30, 2020 (In thousands) Banking Financial Services Corporate Consolidated Net interest income (expense) $ 315,998 $ (410 ) $ (7,406 ) $ 308,182 Provision for credit losses 242,240 — — 242,240 Noninterest income (expense) 44,217 21,175 (373 ) 65,019 Noninterest expense 607,046 16,974 2,253 626,273 Income tax (benefit) expense (44,599 ) 473 4,239 (39,887 ) Net (loss) income $ (444,472 ) $ 3,318 $ (14,271 ) $ (455,425 ) Total assets $ 18,760,701 $ 92,638 $ 4,414 $ 18,857,753

Equity-based Compensation

Equity-based Compensation	6 Months Ended
	Jun. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Equity-based Compensation	Note 15—Equity-based Compensation The Company administers a long-term incentive compensation plan that permits the granting of incentive awards in the form of stock options, restricted stock, restricted stock units, performance units, stock appreciation rights, or other stock-based awards. The terms of all awards issued under these plans are determined by the Compensation Committee of the Board of Directors. The Amended and Restated 2015 Omnibus Incentive Plan (the “Plan”) permits the Company to grant to employees and directors various forms of incentive compensation. The principal purposes of this plan are to focus directors, officers, and other employees and consultants on business performance that creates shareholder value, to encourage innovative approaches to the business of the Company, and to encourage ownership of the Company’s stock. The Plan authorizes 7.5 million common share equivalents available for grant, where grants of full value awards (e.g., shares of restricted stock, restricted stock units and performance stock units) count as one share equivalent. The number of remaining share equivalents available for future issuance under the Plan was 2.9 million at June 30, 2021. Restricted Stock Units During the six months ended June 30, 2021 and 2020, the Company granted 632,464 and 772,881 shares, respectively, of stock-based awards in the form of restricted stock units (“RSU”) pursuant to and subject to the provisions of the Plan. The following table summarizes the activity related to restricted stock unit awards: For the Six Months Ended June 30, 2021 2020 Number of Shares Weighted Average Fair Value per Unit at Award Date Number of Shares Weighted Average Fair Value per Unit at Award Date Non-vested at beginning of period 1,617,945 $ 14.35 1,229,863 $ 19.97 Granted during the period 632,464 21.79 772,881 7.80 Vested during the period (402,964 ) 14.85 (198,075 ) 20.03 Forfeited during the period (138,456 ) 22.22 (60,788 ) 19.40 Non-vested at end of period 1,708,989 $ 16.34 1,743,881 $ 14.59 The RSU granted include both time and performance-based components. The following table summarizes the vesting schedule for the time-based RSU granted that remain unvested at June 30, 2021: Quarter Ending Annual Vesting Quarterly Vesting Cliff Vesting September 30, 2021 962 March 31, 2022 24,282 103,992 21,653 March 31, 2023 95,920 June 30, 2023 3,018 September 30, 2023 7,426 March 31, 2024 847,135 June 30, 2024 6,900 September 30, 2024 10,000 While the grants of performance-based RSU specify a stated target number of units, the determination of the actual number of shares to be issued will be based on the achievement of certain financial performance measures of the Company. These performance conditions will determine the actual number of shares to be issued and can be in the range of 0% to 200% of the target number of performance-based RSU granted. RSU include rights as a shareholder in the form of dividend equivalents. Dividend equivalents for time-based RSU will be paid on each dividend payment date for the Company; dividend equivalents for the performance-based RSU will be accrued and paid on the number of earned shares once the performance level is determined and the corresponding number of shares are issued. The fair value of the RSU was estimated based upon the fair value of the underlying shares on the date of the grant. The Company recorded $3.9 million and $6.0 million of equity-based compensation expense for the outstanding restricted stock units for the three and six months ended June 30, 2021, respectively, compared to $1.2 million and $2.3 million for the three and six months ended June 30, 2020, respectively. The remaining expense related to unvested restricted stock units is $22.0 million as of June 30, 2021 and will be recognized over service periods ranging from 3 months to 39 months. Stock Options During the first quarter of 2019, the Company granted 1,602,848 stock options to certain executive officers. The options were granted at an exercise price equal to a 15% premium to the fair value of the Company’s Class A common stock at the date of grant, with a weighted-average exercise price of $20.43. The options vest over a three-year The Company uses the Black-Scholes option pricing model to estimate the fair value of the stock options. See Note 20 to the consolidated financial statements of our Annual Report on Form 10-K for the year ended December 31, 2020 for a description of the assumptions used for stock option awards issued during 2019. Employee Stock Purchase Plan On June 1, 2018, the Company commenced the 2018 Employee Stock Purchase Plan (“ESPP”), whereby employees may purchase the Company’s Class A common stock at a discount of 15% of the fair market value of a share of Class A common stock, defined as the closing price of Class A common stock on the NYSE for the last day of the purchase period (as defined in the ESPP). The total amount of the Company’s Class A common stock on which options may be granted under the ESPP shall not exceed 500,000 shares. Shares of Class A common stock subject to any unexercised portion of a terminated, canceled, or expired option granted under the ESPP may again be used for options under the ESPP. No participating employee shall have any rights as a shareholder until the issuance of shares to the employee. There were 38,865 shares of Class A common stock purchased in the open market by the ESPP during the six months ended June 30, 2021, compared to 117,481 shares during the six months ended June 30, 2020, which resulted in compensation expense of $57 thousand and $132 thousand compared to $31 thousand and $45 thousand for the three and six months ended June 30, 2021 and 2020, respectively. As a result of our announced merger with BancorpSouth Bank, the final offering period under the ESPP ended on June 30, 2021, and no additional offering periods will commence prior to the Effective Time of the merger. Upon the Effective Time of the merger, the ESPP will terminate, and no further rights will be granted thereunder.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Note 16—Accumulated Other Comprehensive Income (Loss) Activity within the balances in accumulated other comprehensive income (loss) is shown in the following tables for the six months ended June 30, 2021 and 2020. Six Months Ended June 30, 2021 (In thousands) Unrealized gains (losses) on securities available-for-sale Unrealized gains (losses) on derivative instruments designated as cash flow hedges Accumulated other comprehensive income (loss) Balance at December 31, 2020 $ 65,594 $ 44,492 $ 110,086 Net change (38,892 ) (24,161 ) (63,053 ) Balance at June 30, 2021 $ 26,702 $ 20,331 $ 47,033 Six Months Ended June 30, 2020 (In thousands) Unrealized gains on securities available-for-sale Unrealized gains on derivative instruments designated as cash flow hedges Accumulated other comprehensive income Balance at December 31, 2019 $ 19,605 $ 95,097 $ 114,702 Net change 48,929 109,829 158,758 Balance at June 30, 2020 $ 68,534 $ 204,926 $ 273,460

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Note 17—Subsequent Events On July 21, 2021, the Bank received a letter (the “Letter”) from the U.S. Department of Justice (the “DOJ”) alleging that, from 2013 to 2017, the Bank had been engaged in housing-related lending practices in the Houston, Texas region that violated the Fair Housing Act and the Equal Credit Opportunity Act. The Letter also stated that the DOJ had been authorized to file a complaint against the Bank in the U.S. District Court for the Northern District of Georgia regarding these allegations seeking injunctive relief as well as monetary relief, including the assessment of civil penalties in an amount authorized by statute. Cadence does not believe it has violated either the Fair Housing Act or the Equal Credit Opportunity Act. Due to the timing of the Letter, Cadence cannot estimate any potential cost of resolving this issue or the likelihood that there will be a monetary cost to a resolution. Beginning on May 28, 2021, five purported holders of Cadence common stock filed substantially similar complaints against Cadence and the members of the Cadence board of directors (and, in one case, BancorpSouth). Two complaints were filed in the United States District Court for the District of Delaware, two complaints were filed in the United States District Court for the Southern District of New York and one complaint was filed in the United States District Court for the Northern District of Georgia. The complaints are captioned as follows: Stein v. Cadence Bancorporation et al. Lo v. Cadence Bancorporation et al. Raul v. Cadence Bancorporation et al. Waterman v. Cadence Bancorporation et al. Parshall v. Cadence Bancorporation et al. Lo v. Cadence et. al. Harris v. BancorpSouth Bank et al. Subsequent to June 30, 2021, the plaintiffs and defendants reached an agreement to resolve the Actions. In connection with resolution of the Actions, Cadence has agreed to make certain supplemental disclosures to the joint proxy statement/offering circular of Cadence and BancorpSouth, which was filed by Cadence with the SEC and by BancorpSouth with the Federal Deposit Insurance Corporation (the “FDIC”) on July 7, 2021 (the “Proxy Statement”). The plaintiffs have agreed that, following the filing of a Current Report on Form 8-K that discloses and describes the resolution of the Actions, the plaintiffs will dismiss the Actions in their entirety. On July 22, 2021, the Board of Directors of Cadence Bancorporation declared a quarterly cash dividend in the amount of $0.15 per share of outstanding common stock, representing an annualized dividend of $0.60 per share. The dividend will be paid on August 13, 2021 to holders of record of Cadence’s Class A common stock on August 6, 2021.

Summary of Accounting Policies

Summary of Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and Consolidation The accompanying unaudited consolidated financial statements for the Company have been prepared in accordance with instructions to the SEC Form 10-Q and Article 10 of Regulation S-X; therefore, they do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, comprehensive income, and cash flows in conformity with accounting principles generally accepted in the United States of America (“GAAP”). All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the consolidated financial position and results of operations for the periods covered by this report have been included. These interim financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2020. Operating results for the period ended June 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. The Company and its subsidiaries follow GAAP, including, where applicable, general practices within the banking industry. The unaudited consolidated financial statements include the accounts of the Company and its subsidiaries. Significant intercompany accounts and transactions have been eliminated in consolidation. The assessment of whether or not the Company has a controlling interest (i.e., the primary beneficiary) in a variable-interest entity (“VIE”) is performed on an on-going basis. All equity investments in non-consolidated VIEs are included in “other assets” in the Company’s consolidated balance sheets (see Note 13). Certain amounts reported in prior years have been reclassified to conform to the 2021 presentation. These reclassifications did not materially impact the Company’s consolidated balance sheets or consolidated statements of operations. In accordance with
Pronouncements Adopted During the Three Months Ended March 31, 2021 and Pending Accounting Pronouncements	Pronouncements adopted during the six months ended June 30, 2021 ASU No. 2019-12 In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes The Company adopted this guidance on January 1, 2021, with no material impact on the consolidated financial statements. ASU No. 2020-01 In January 2020, the FASB issued ASU No. 2020-01, Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)—Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 (a consensus of the FASB Emerging Issues Task Force) The Company adopted this guidance on January 1, 2021, with no material impact on the consolidated financial statements. ASU No. 2020-08 In October 2020, the FASB issued ASU No. 2020-08, Codification Improvements to Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs The Company adopted this guidance on January 1, 2021. As Cadence does not currently own any callable bonds at a premium, the adoption of this guidance has no immediate impact on our consolidated financial statements. ASU No. 2020-10 In October 2020, the FASB issued ASU No. 2020-10, Codification Improvements The Company adopted this guidance on January 1, 2021. The amendments in this Update did not change GAAP and, therefore, did not have a material impact on the consolidated financial statements. ASU No. 2021-01 In January 2021, the FASB issued ASU No. 2021-01, Reference Rate Reform (Topic 848): Scope. This guidance was effective for all entities upon issuance and generally can be applied through December 31, 2022, similar to existing relief provided under ASC 848. Entities may elect to apply the guidance on contract modifications either (1) retrospectively as of any date from the beginning of any interim period that includes March 12, 2020 or (2) prospectively to new modifications from any date in an interim period that includes or is after January 7, 2021, up to the date that financial statements are available to be issued. Entities may elect to apply the guidance on hedge accounting to eligible hedging relationships that existed as of the beginning of an interim period that includes March 12, 2020 and to those entered into after the beginning of the interim period that includes that date. The adoption of this guidance has no immediate impact on our consolidated financial statements. Pending Accounting Pronouncements ASU No. 2020-06 In August 2020, the FASB issued ASU No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity The guidance is effective for annual periods beginning after December 15, 2021, and interim periods within those fiscal years. The FASB specified that an entity should adopt the guidance as of the beginning of its annual fiscal year. As Cadence does not currently have any convertible debt or hedging contracts in our own equity, this guidance will have no impact on our consolidated financial statements. ASU No. 2021-04 In May 2021, the FASB issued ASU No. 2021-04, Earnings Per Share (Topic 260), Debt—Modifications and Extinguishments (Subtopic 470-50), Compensation—Stock Compensation (Topic 718), and Derivatives and Hedging—Contracts in Entity's Own Equity (Subtopic 815-40): Issuer's Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options (a consensus of the FASB Emerging Issues Task Force). The guidance clarifies whether an issuer should account for a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange as (1) an adjustment to equity and, if so, the related earnings per share (EPS) effects, if any, or (2) an expense and, if so, the manner and pattern of recognition. The guidance is effective for annual periods beginning after December 15, 2021, and interim periods within those fiscal years. The amendments should be applied prospectively to modifications or exchanges occurring on or after the effective date of the amendments. As Cadence does not currently hold any freestanding equity-classified written call options, this guidance will have no immediate impact on our consolidated financial statements.

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2021
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost and Estimated Fair Value of Securities Available-for-Sale	A summary of amortized cost and estimated fair value of securities available-for-sale at June 30, 2021 and December 31, 2020 is as follows: (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value June 30, 2021 Securities available-for-sale: Obligations of U.S. government agencies $ 302,297 $ 937 $ 6,086 $ 297,148 Mortgage-backed securities issued or guaranteed by U.S. agencies (MBS) Residential pass-through: Guaranteed by GNMA 119,173 2,277 260 121,190 Issued by FNMA and FHLMC 2,676,827 28,977 15,367 2,690,437 Other residential mortgage-backed securities 230,806 3,569 1,899 232,476 Commercial mortgage-backed securities 449,284 9,302 4,168 454,418 Total MBS 3,476,090 44,125 21,694 3,498,521 Obligations of states and municipal subdivisions 354,819 15,458 467 369,810 Other domestic debt securities 12,000 53 — 12,053 Foreign debt securities 100,000 192 276 99,916 Total securities available-for-sale $ 4,245,206 $ 60,765 $ 28,523 $ 4,277,448 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value December 31, 2020 Securities available-for-sale: Obligations of U.S. government agencies $ 289,565 $ 1,281 $ 2,117 $ 288,729 Mortgage-backed securities issued or guaranteed by U.S. agencies (MBS) Residential pass-through: Guaranteed by GNMA 122,366 3,029 60 125,335 Issued by FNMA and FHLMC 1,870,399 47,020 530 1,916,889 Other residential mortgage-backed securities 211,860 5,143 348 216,655 Commercial mortgage-backed securities 420,700 13,110 2,033 431,777 Total MBS 2,625,325 68,302 2,971 2,690,656 Obligations of states and municipal subdivisions 334,177 18,610 4 352,783 Total securities available-for-sale $ 3,249,067 $ 88,193 $ 5,092 $ 3,332,168
Schedule of Contractual Maturities of Securities Available-for-Sale	The scheduled contractual maturities of securities available-for-sale at June 30, 2021 were as follows: Amortized Estimated (In thousands) Cost Fair Value Due in one year or less $ — $ — Due after one year through five years 763 756 Due after five years through ten years 224,013 224,471 Due after ten years 544,340 553,700 Mortgage-backed securities 3,476,090 3,498,521 Total $ 4,245,206 $ 4,277,448
Summary of Gross Gains, and Gross Losses on Sales of Securities Available for Sale	Gross gains and gross losses on sales of securities available-for-sale for the three and six months ended June 30, 2021 and 2020 are presented below. For the Three Months Ended June 30, For the Six Months Ended June 30, (In thousands) 2021 2020 2021 2020 Gross realized gains $ 11 $ 2,286 $ 2,272 $ 5,280 Gross realized losses — — 2 — Realized gains, net $ 11 $ 2,286 $ 2,270 $ 5,280
Schedule of Securities Classified as Available-for-Sale with Gross Unrealized Losses Aggregated by Category and Length of Time	Information pertaining to Unrealized Loss Analysis Losses < 12 Months Losses > 12 Months (In thousands) Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses June 30, 2021 Obligations of U.S. government agencies $ 211,512 $ 5,772 $ 21,184 $ 314 Mortgage-backed securities 1,572,483 21,693 785 1 Obligations of states and municipal subdivisions 42,933 467 — — Foreign debt security 49,724 276 — — Total $ 1,876,652 $ 28,208 $ 21,969 $ 315 Unrealized Loss Analysis Losses < 12 Months Losses > 12 Months (In thousands) Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses December 31, 2020 Obligations of U.S. government agencies $ 151,172 $ 1,868 $ 30,658 $ 249 Mortgage-backed securities 360,197 2,832 18,476 139 Obligations of states and municipal subdivisions 841 4 — — Total $ 512,210 $ 4,704 $ 49,134 $ 388

Loans Held for Sale, Loans an_2

Loans Held for Sale, Loans and Allowance for Credit Losses (Tables)	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Summary of Loans Held for Sale by Portfolio Segment	The following table presents a summary of the loans held for sale by portfolio segment at the lower of amortized cost or fair value as of June 30, 2021 and December 31, 2020. (In thousands) June 30, 2021 December 31, 2020 Commercial and industrial $ 29,219 $ 33,339 Commercial real estate 736 780 Consumer 5,254 12,899 Total loans held for sale (1) $ 35,209 $ 47,018 (1) $0.1 million of net accrued interest receivable is excluded from the loan balances above as of both June 30, 2021 and December 31, 2020.
Summary of Total Loans Outstanding by Portfolio Segment and Class of Financing Receivable	The following table presents total loans outstanding by portfolio segment and class of financing receivable as of June 30, 2021 and December 31, 2020. Outstanding balances include originated loans, Acquired Noncredit Impaired (“ANCI”) loans, and Purchase Credit Deteriorated (“PCD”) loans. (In thousands) June 30, 2021 December 31, 2020 Commercial and industrial General C&I $ 3,826,331 $ 4,421,286 Energy 1,235,262 1,310,612 Restaurant 779,846 971,662 Healthcare 448,250 547,491 Total commercial and industrial 6,289,689 7,251,051 Commercial real estate Industrial, retail, and other 1,740,144 1,683,975 Multifamily 759,882 776,494 Office 380,717 452,639 Total commercial real estate 2,880,743 2,913,108 Consumer Residential 2,373,361 2,452,865 Other 90,709 102,105 Total consumer 2,464,070 2,554,970 Total $ 11,634,502 $ 12,719,129
Summary of PPP Loans by Portfolio Segment and Class of Financing Receivable	The following table presents the Company’s PPP loans by portfolio segment and class of financing receivable as of June 30, 2021 and December 31, 2020. June 30, 2021 December 31, 2020 (In thousands) Amortized Cost % of PPP Portfolio Amortized Cost % of PPP Portfolio Commercial and industrial General C&I $ 150,121 68.7 % $ 648,458 69.1 % Energy 21,366 9.8 76,228 8.1 Restaurant 31,235 14.3 134,454 14.4 Healthcare 15,795 7.2 79,120 8.4 Total PPP loans $ 218,517 100.0 % $ 938,260 100.0 % As a % of total loans 1.9 % 7.4 %
Summary of Allowance for Credit Losses	The following tables provide a summary of the activity in the ACL and the reserve for unfunded commitments for the three and six months ended June 30, 2021 and 2020. For the Three Months Ended June 30, 2021 (In thousands) Commercial and Industrial Commercial Real Estate Consumer Total Allowance for Credit Losses Reserve for Unfunded Commitments (1) Total As of March 31, 2021 $ 165,371 $ 111,410 $ 31,256 $ 308,037 $ 1,049 $ 309,086 Provision (release) for credit losses (25,601 ) (25,253 ) (727 ) (51,581 ) (295 ) (51,876 ) Charge-offs (10,218 ) (819 ) (228 ) (11,265 ) — (11,265 ) Recoveries 1,757 577 207 2,541 — 2,541 As of June 30, 2021 $ 131,309 $ 85,915 $ 30,508 $ 247,732 $ 754 $ 248,486 For the Six Months Ended June 30, 2021 (In thousands) Commercial and Industrial Commercial Real Estate Consumer Total Allowance for Credit Losses Reserve for Unfunded Commitments (1) Total As of December 31, 2020 $ 187,365 $ 141,187 $ 38,608 $ 367,160 $ 2,296 $ 369,456 Provision (release) for credit losses (35,194 ) (55,364 ) (8,038 ) (98,596 ) (1,542 ) (100,138 ) Charge-offs (24,343 ) (1,219 ) (374 ) (25,936 ) — (25,936 ) Recoveries 3,481 1,311 312 5,104 — 5,104 As of June 30, 2021 $ 131,309 $ 85,915 $ 30,508 $ 247,732 $ 754 $ 248,486 Allocation of ending ACL Loans collectively evaluated $ 109,261 $ 85,915 $ 30,508 $ 225,684 Loans individually evaluated 22,048 — — 22,048 ACL as of June 30, 2021 $ 131,309 $ 85,915 $ 30,508 $ 247,732 Loans (amortized cost) Loans collectively evaluated $ 6,204,732 $ 2,867,972 $ 2,461,842 $ 11,534,546 Loans individually evaluated 84,957 12,771 2,228 99,956 Loans as of June 30, 2021 $ 6,289,689 $ 2,880,743 $ 2,464,070 $ 11,634,502 (1) The reserve for unfunded commitments is included in other liabilities on the consolidated balance sheets. For the Three Months Ended June 30, 2020 (In thousands) Commercial and Industrial Commercial Real Estate Consumer Total Allowance for Credit Losses Reserve for Unfunded Commitments (1) Total As of March 31, 2020 $ 154,585 $ 53,418 $ 37,243 $ 245,246 $ 3,222 $ 248,468 Provision for credit losses 95,325 59,359 3,522 158,206 605 158,811 Charge-offs (32,816 ) (327 ) (309 ) (33,452 ) — (33,452 ) Recoveries 702 30 169 901 — 901 As of June 30, 2020 $ 217,796 $ 112,480 $ 40,625 $ 370,901 $ 3,827 $ 374,728 For the Six Months Ended June 30, 2020 (In thousands) Commercial and Industrial Commercial Real Estate Consumer Total Allowance for Credit Losses Reserve for Unfunded Commitments (1) Total As of December 31, 2019 $ 89,796 $ 15,319 $ 14,528 $ 119,643 $ 1,699 $ 121,342 Cumulative effect of adoption of CECL 32,951 20,599 22,300 75,850 332 76,182 As of January 1, 2020 122,747 35,918 36,828 195,493 2,031 197,524 Provision for credit losses 159,008 77,158 4,278 240,444 1,796 242,240 Charge-offs (64,803 ) (806 ) (941 ) (66,550 ) — (66,550 ) Recoveries 844 210 460 1,514 — 1,514 As of June 30, 2020 $ 217,796 $ 112,480 $ 40,625 $ 370,901 $ 3,827 $ 374,728 Allocation of ending ACL Loans collectively evaluated $ 189,085 $ 111,945 $ 40,625 $ 341,655 Loans individually evaluated 28,711 535 — 29,246 ACL as of June 30, 2020 $ 217,796 $ 112,480 $ 40,625 $ 370,901 Loans (amortized cost) Loans collectively evaluated $ 7,918,246 $ 2,954,091 $ 2,615,866 $ 13,488,203 Loans individually evaluated 185,597 22,833 2,464 210,894 Loans as of June 30, 2020 (2) $ 8,103,843 $ 2,976,924 $ 2,618,330 $ 13,699,097 (1) The reserve for unfunded commitments is included in other liabilities on the consolidated balance sheets. (2) $48.2 million of net accrued interest receivable is excluded from the loan balances above as of June 30, 2020.
Summary of Credit Quality Indicator and by Origination Year	The following table provides information by each credit quality indicator and by origination year (vintage) as of June 30, 2021. The Company defines origination year (vintage) for the purposes of disclosure as the year of execution of the original loan agreement. Loans that are modified as a TDR are considered to be a continuation of the original loan, therefore the origination date of the original loan is reflected as the vintage date. This presentation is consistent with the vintage determination used in the ACL model. The criticized loans with a 2021 vintage relate to credits in resolution. Amortized Cost Basis by Origination Year Revolving Credits (In thousands) 2021 2020 2019 2018 2017 2016 and Prior Revolving Loans Converted to Term Loans Total Commercial and industrial Pass $ 488,137 $ 876,025 $ 492,297 $ 654,883 $ 533,943 $ 735,089 $ 1,991,489 $ 47,017 $ 5,818,880 Special mention 2,537 3,574 39,498 28,084 6,265 8,452 89,362 90 177,862 Substandard 26 22,172 10,389 78,610 24,213 57,172 65,791 12,584 270,957 Doubtful — — — 7,180 8,144 4,000 2,666 — 21,990 Total commercial and industrial 490,700 901,771 542,184 768,757 572,565 804,713 2,149,308 59,691 6,289,689 Commercial real estate Pass 129,109 579,878 471,646 575,216 363,440 470,979 108,167 50 2,698,485 Special mention — 10,162 41 10,383 30,430 12,963 191 — 64,170 Substandard — — 14,455 19,957 39,256 44,222 198 — 118,088 Doubtful — — — — — — — — — Total commercial real estate 129,109 590,040 486,142 605,556 433,126 528,164 108,556 50 2,880,743 Consumer Current 252,357 454,353 361,893 404,200 204,476 535,254 227,461 247 2,440,241 30-59 days past due — 1,106 1,943 1,847 476 6,637 138 — 12,147 60-89 days past due 40 14 211 593 89 333 250 — 1,530 90+ days past due — — 781 3,763 230 5,378 — — 10,152 Total consumer 252,397 455,473 364,828 410,403 205,271 547,602 227,849 247 2,464,070 Total $ 872,206 $ 1,947,284 $ 1,393,154 $ 1,784,716 $ 1,210,962 $ 1,880,479 $ 2,485,713 $ 59,988 $ 11,634,502
Past Due Financing Receivables	The following tables provide an aging analysis of past due loans by portfolio segment and class of financing receivable. Age Analysis of Past-Due Loans as of June 30, 2021 90+ Days (In thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Current Total Past Due and Accruing Commercial and industrial General C&I $ 6,512 $ 2,661 $ 8,492 $ 17,665 $ 3,808,666 $ 3,826,331 $ 353 Energy — — 8,906 8,906 1,226,356 1,235,262 — Restaurant 9,123 74 4,496 13,693 766,153 779,846 — Healthcare 114 223 125 462 447,788 448,250 — Total commercial and industrial 15,749 2,958 22,019 40,726 6,248,963 6,289,689 353 Commercial real estate Industrial, retail, and other 7,912 3,571 2,218 13,701 1,726,443 1,740,144 50 Multifamily — 359 — 359 759,523 759,882 — Office — 54 7,120 7,174 373,543 380,717 — Total commercial real estate 7,912 3,984 9,338 21,234 2,859,509 2,880,743 50 Consumer Residential 12,138 1,041 10,131 23,310 2,350,051 2,373,361 585 Other 9 489 21 519 90,190 90,709 — Total consumer 12,147 1,530 10,152 23,829 2,440,241 2,464,070 585 Total $ 35,808 $ 8,472 $ 41,509 $ 85,789 $ 11,548,713 $ 11,634,502 $ 988 Age Analysis of Past-Due Loans as of December 31, 2020 90+ Days (In thousands) 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Current Total Past Due and Accruing Commercial and industrial General C&I $ 4,609 $ 11,653 $ 16,301 $ 32,563 $ 4,388,723 $ 4,421,286 $ 9,130 Energy — — 1,691 1,691 1,308,921 1,310,612 — Restaurant 7,561 302 5,283 13,146 958,516 971,662 — Healthcare 21 229 354 604 546,887 547,491 — Total commercial and industrial 12,191 12,184 23,629 48,004 7,203,047 7,251,051 9,130 Commercial real estate Industrial, retail, and other 12,619 2,884 2,647 18,150 1,665,825 1,683,975 125 Multifamily — 198 — 198 776,296 776,494 — Office 408 — 7,258 7,666 444,973 452,639 — Total commercial real estate 13,027 3,082 9,905 26,014 2,887,094 2,913,108 125 Consumer Residential 16,971 3,695 12,375 33,041 2,419,824 2,452,865 4,625 Other 179 5 — 184 101,921 102,105 — Total consumer 17,150 3,700 12,375 33,225 2,521,745 2,554,970 4,625 Total $ 42,368 $ 18,966 $ 45,909 $ 107,243 $ 12,611,886 $ 12,719,129 $ 13,880
Summary of Nonaccruing Loans by Portfolio Segment and Class of Financing Receivable	The following table provides information about nonaccruing loans by portfolio segment and class of financing receivable as of and for the three and six months ended June 30, 2021. Nonaccrual Loans - Amortized Cost (1) 90+ Days Interest Income Recognized (In thousands) December 31, 2020 June 30, 2021 No Allowance Recorded Past Due and Accruing (2) Three Months Ended June 30, 2021 Six Months Ended June 30, 2021 Commercial and industrial General C&I $ 34,363 $ 40,901 $ 3,105 $ 353 $ 111 $ 137 Energy 20,241 22,100 11,613 — 38 39 Restaurant 53,856 28,597 2,533 — 119 120 Healthcare 951 659 — — — 497 Total commercial and industrial 109,411 92,257 17,251 353 268 793 Commercial real estate Industrial, retail, and other 7,301 5,992 3,570 50 34 120 Multifamily — — — — — — Office 7,258 8,565 8,565 — 116 187 Total commercial real estate 14,559 14,557 12,135 50 150 307 Consumer Residential 14,028 15,682 1,552 585 125 239 Other 4 21 — — 8 10 Total consumer 14,032 15,703 1,552 585 133 249 Total $ 138,002 $ 122,517 $ 30,938 $ 988 $ 551 $ 1,349 (1) Nonperforming loans do not include nonperforming loans held for sale of $0.2 million at December 31, 2020. (2) Less than $0.1 million of net accrued interest receivable is excluded from the loan balances above as of June 30, 2021.
Summary of Information Regarding Loans and Types of Loan Modified into TDRs	The following table provides information regarding loans that were modified as TDRs during the periods indicated. For the Three Months Ended June 30, 2021 2020 (Dollars in thousands) Number of TDRs Amortized Cost (1) Number of TDRs Amortized Cost Commercial and industrial General C&I 1 $ 15,836 — $ — Energy 1 10,499 — — Restaurant 1 7,306 — — Total 3 $ 33,641 — $ — (1) There was less than $0.1 million of net accrued interest receivable recorded on the loan balances above as of June 30, 2021. For the Six Months Ended June 30, 2021 2020 (Dollars in thousands) Number of TDRs Amortized Cost (1) Number of TDRs Amortized Cost (1) Commercial and industrial General C&I 1 $ 15,836 3 $ 19,366 Energy 1 10,499 1 8,140 Restaurant 1 7,306 2 24,246 Commercial real estate Industrial, retail, and other 1 2,354 — — Total 4 $ 35,995 6 $ 51,752 (1) There was less than $0.1 million of net accrued interest receivable recorded on the loan balances above as of both June 30, 2021 and 2020. The following table provides information regarding the types of loan modifications that were modified into TDRs during the periods indicated. For the Three Months Ended June 30, 2021 2020 Number of Loans Modified by: Rate Concession Modified Terms and/or Other Concessions Rate Concession Modified Terms and/or Other Concessions Commercial and industrial General C&I — 1 — — Energy — 1 — — Restaurant — 1 — — Total — 3 — — For the Six Months Ended June 30, 2021 2020 Number of Loans Modified by: Rate Concession Modified Terms and/or Other Concessions Rate Concession Modified Terms and/or Other Concessions Commercial and industrial General C&I — 1 — 3 Energy — 1 1 — Restaurant — 1 — 2 Commercial real estate Industrial, retail, and other — 1 — — Total — 4 1 5

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts and Estimated Fair Values	The notional amounts and estimated fair values as of June 30, 2021 and December 31, 2020 were as follows: June 30, 2021 December 31, 2020 Fair Value Fair Value (In thousands) Notional Amount Other Assets Other Liabilities Notional Amount Other Assets Other Liabilities Derivatives designated as hedging instruments (cash flow hedges): Commercial loan interest rate swaps $ 350,000 $ 13,263 $ — $ 350,000 $ 22,560 $ — Total derivatives designated as hedging instruments 350,000 13,263 — 350,000 22,560 — Derivatives not designated as hedging instruments: Commercial loan interest rate swaps 1,299,146 16,162 2,002 1,200,581 20,699 1,647 Commercial loan interest rate caps 176,015 9 9 162,479 4 4 Commercial loan interest rate floors 560,272 8,381 8,381 560,048 11,986 11,986 Commercial loan interest rate collars — — — 66,665 305 305 Mortgage loan held-for-sale interest rate lock commitments 16,192 261 — 33,458 531 — Mortgage loan forward sale commitments 4,268 47 — 11,081 112 — Mortgage loan held-for-sale floating commitments 2,421 — — 4,206 — — Foreign exchange contracts 69,335 1,399 1,219 89,707 780 1,058 Total derivatives not designated as hedging instruments 2,127,648 26,259 11,611 2,128,225 34,417 15,000 Total derivatives $ 2,477,648 $ 39,522 $ 11,611 $ 2,478,225 $ 56,977 $ 15,000
Schedule of Gains (Losses) in Consolidated Statements of Operations Related to Derivatives Designated as Hedging Instruments	Pre-tax For the Three Months Ended June 30, 2021 2020 (In thousands) OCI Reclassified from AOCI to interest income OCI Reclassified from AOCI to interest income Derivatives designated as hedging instruments (cash flow hedges): Commercial loan interest rate swaps $ 2,838 $ 1,318 $ 4,046 $ 981 Commercial loan interest rate collars — 9,466 — 16,714 For the Six Months Ended June 30, 2021 2020 (In thousands) OCI Reclassified from AOCI to interest income OCI Reclassified from AOCI to interest income Derivatives designated as hedging instruments (cash flow hedges): Commercial loan interest rate swaps $ (6,695 ) $ 2,602 $ 28,081 $ 876 Commercial loan interest rate collars — 22,278 143,199 24,926

Borrowed Funds (Tables)

Borrowed Funds (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Summary of Debt	Our outstanding senior and subordinated debt consists of the following: (In thousands) June 30, 2021 December 31, 2020 Cadence Bancorporation: 5.375% senior notes, due June 28, 2021 $ — $ 50,000 7.250% subordinated notes, due June 28, 2029, callable in 2024 35,000 35,000 3-month LIBOR plus 4.884%, subordinated notes, due March 11, 2025, callable in 2020 — 40,000 4.750% subordinated notes, due June 30, 2029, callable in 2024 85,000 85,000 Total — Cadence Bancorporation 120,000 210,000 Cadence Bank: 6.250% subordinated notes, due June 28, 2029, callable in 2024 25,000 25,000 Debt issue costs and unamortized premium (1,341 ) (1,670 ) Total senior and subordinated debt $ 143,659 $ 233,330
Summary of Junior Subordinated Debt	Our junior subordinated debt consists of the following: (In thousands) June 30, 2021 December 31, 2020 Junior subordinated debentures, 3-month LIBOR plus 2.85%, due 2033 $ 30,000 $ 30,000 Junior subordinated debentures, 3-month LIBOR plus 2.95%, due 2033 5,155 5,155 Junior subordinated debentures, 3-month LIBOR plus 1.75%, due 2037 15,464 15,464 Total par value 50,619 50,619 Purchase accounting adjustment, net of amortization (12,867 ) (12,982 ) Total junior subordinated debentures $ 37,752 $ 37,637

Other Noninterest Income and _2

Other Noninterest Income and Other Noninterest Expense (Tables)	6 Months Ended
	Jun. 30, 2021
Other Nonoperating Income Expense [Abstract]
Summary of Other Noninterest Income and Other Noninterest Expense	The detail of other noninterest income and other noninterest expense captions presented in the consolidated statements of operations is as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2021 2020 2021 2020 Other noninterest income Insurance revenue $ 287 $ 225 $ 558 $ 474 Income from bank owned life insurance policies 1,802 1,220 3,376 2,549 Other 6,022 (1,373 ) 10,706 (1,953 ) Total other noninterest income $ 8,111 $ 72 $ 14,640 $ 1,070 Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2021 2020 2021 2020 Other noninterest expenses Data processing expense $ 3,179 $ 3,084 $ 6,438 $ 6,436 Software amortization 4,950 4,036 9,457 7,583 Consulting and professional fees 3,736 3,009 6,969 5,715 Loan related expenses 754 735 1,550 1,495 FDIC insurance 1,656 3,939 3,121 6,374 Communications 1,281 1,002 2,524 2,158 Advertising and public relations 1,487 920 2,414 2,384 Legal expenses 594 579 1,518 991 Other 7,998 8,052 17,036 19,688 Total other noninterest expenses $ 25,635 $ 25,356 $ 51,027 $ 52,824

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted Net Income (Loss) Per Common Share	The following table displays a reconciliation of the information used in calculating basic and diluted net income (loss) per common share for the three and six months ended June 30, 2021 and 2020. Three Months Ended June 30, Six Months Ended June 30, (In thousands, except share and per share data) 2021 2020 2021 2020 Net income (loss) per consolidated statements of operations $ 101,309 $ (56,114 ) $ 207,734 $ (455,425 ) Net income allocated to participating securities (734 ) — (1,509 ) — Net income (loss) allocated to common stock $ 100,575 $ (56,114 ) $ 206,225 $ (455,425 ) Weighted average common shares outstanding (Basic) 124,732,617 125,924,652 124,904,976 126,277,549 Weighted average dilutive restricted stock units 816,177 — 679,218 — Weighted average common shares outstanding (Diluted) 125,548,794 125,924,652 125,584,194 126,277,549 Earnings (loss) per common share (Basic) $ 0.81 $ (0.45 ) $ 1.65 $ (3.61 ) Earnings (loss) per common share (Diluted) $ 0.80 $ (0.45 ) $ 1.64 $ (3.61 )

Regulatory Matters (Tables)

Regulatory Matters (Tables)	6 Months Ended
	Jun. 30, 2021
Banking And Thrifts [Abstract]
Schedule of Actual Capital Ratios for Company and Bank	The actual capital ratios for the Company and the Bank as of June 30, 2021 and December 31, 2020 are presented in the following table and as shown, are above the thresholds necessary to be considered “well-capitalized.” Management believes that no events or changes have occurred after June 30, 2021 that would change this designation. Consolidated Company Bank June 30, 2021 December 31, 2020 June 30, 2021 December 31, 2020 Tier 1 leverage 11.4 % 10.9 % 11.6 % 11.3 % Common equity tier 1 capital 14.7 14.0 14.7 14.1 Tier 1 risk-based capital 14.7 14.0 15.0 14.5 Total risk-based capital 17.0 16.7 16.2 15.9

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	6 Months Ended
	Jun. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Summary of Commitments and Contingent Liabilities	A summary of commitments and contingent liabilities is as follows: (In thousands) June 30, 2021 December 31, 2020 Commitments to extend credit $ 4,652,103 $ 4,344,268 Commitments to grant loans 252,835 154,507 Standby letters of credit 270,086 216,741 Performance letters of credit 18,123 16,065 Commercial letters of credit 13,261 21,156

Disclosure About Fair Values _2

Disclosure About Fair Values of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis	The table below presents the Company’s assets and liabilities measured at fair value on a recurring basis categorized by the level of inputs used in the valuation of each asset at June 30, 2021 and December 31, 2020: (In thousands) Carrying Value (Level 1) (Level 2) (Level 3) June 30, 2021 Assets Investment securities available-for-sale $ 4,277,448 $ — $ 4,277,448 $ — Derivative assets 39,522 — 39,522 — Other assets 47,513 — — 47,513 Total recurring basis measured assets $ 4,364,483 $ — $ 4,316,970 $ 47,513 Liabilities Derivative liabilities $ 11,611 $ — $ 11,611 $ — Total recurring basis measured liabilities $ 11,611 $ — $ 11,611 $ — (In thousands) Carrying Value (Level 1) (Level 2) (Level 3) December 31, 2020 Assets Investment securities available-for-sale $ 3,332,168 $ — $ 3,332,168 $ — Derivative assets 56,977 — 56,977 — Other assets 38,758 — — 38,758 Total recurring basis measured assets $ 3,427,903 $ — $ 3,389,145 $ 38,758 Liabilities Derivative liabilities $ 15,000 $ — $ 15,000 $ — Total recurring basis measured liabilities $ 15,000 $ — $ 15,000 $ —
Summary of Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis	Level 3 Assets Measured at Fair Value on a Recurring Basis For the Three Months Ended June 30, 2021 2020 2021 2020 2021 2020 (In thousands) Net Profits Interests Investments in Limited Partnerships SBA Servicing Rights Beginning Balance $ 3,282 $ 4,071 $ 32,480 $ 24,042 $ 4,931 $ 3,942 Originations — — — — 664 261 Net (losses) gains included in earnings (51 ) (338 ) 2,426 (1,015 ) 321 (466 ) Reclassifications — — — 1,203 — — Contributions paid — — 5,747 499 — — Distributions received (144 ) — (2,143 ) (98 ) — — Ending Balance $ 3,087 $ 3,733 $ 38,510 $ 24,631 $ 5,916 $ 3,737 Net unrealized (losses) gains included in earnings relating to assets held at the end of the period $ (51 ) $ (338 ) $ 2,426 $ (1,015 ) $ 321 $ (466 ) Net unrealized gains (losses) recognized in other comprehensive income relating to assets held at the end of the period $ — $ — $ — $ — $ — $ —
Summary of Assets Recorded at Fair Value on a Nonrecurring Basis	From time to time, the Company may be required to measure certain other financial assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower of cost or fair value accounting or write-downs of individual assets. For assets measured at fair value on a nonrecurring basis which were still held on the balance sheets at June 30, 2021 and December 31, 2020, the following tables provide the level of valuation assumptions used to determine each adjustment and the related carrying value: (In thousands) Carrying Value (Level 1) (Level 2) (Level 3) June 30, 2021 Loans held for sale $ 35,209 $ — $ 35,209 $ — Individually evaluated loans, net of allocated allowance for credit losses 77,907 — — 77,907 Other real estate and repossessed assets 5,466 — 5,466 Total assets measured on a nonrecurring basis $ 118,582 $ — $ 35,209 $ 83,373 (In thousands) Carrying Value (Level 1) (Level 2) (Level 3) December 31, 2020 Loans held for sale $ 47,018 $ — $ 47,018 $ — Individually evaluated loans, net of allocated allowance for credit losses 87,084 — — 87,084 Other real estate 6,517 — — 6,517 Total assets measured on a nonrecurring basis $ 140,619 $ — $ 47,018 $ 93,601
Summary of Significant Unobservable Inputs Used in Level 3 Fair Value Measurements for Financial Assets Measured at Fair Value on a Nonrecurring Basis	Significant unobservable inputs used in Level 3 fair value measurements for financial assets measured at fair value on a nonrecurring basis are summarized below: Quantitative Information about Level 3 Fair Value Measurements (In thousands) Carrying Value Valuation Methods Unobservable Inputs Range Weighted Average (1) June 30, 2021 Individually evaluated loans, net of allowance for credit losses $ 77,907 Appraised value, as adjusted Discount to fair value 0% - 75% 35% Discounted cash flow Discount rate 11% - 15% 12% Enterprise value Comparables and average multiplier 1.8x - 6.7x 6.08x Other real estate and repossessed assets 5,466 Appraised value, as adjusted Discount to fair value 0% - 20% 10% Estimated closing costs 10% 10% Quantitative Information about Level 3 Fair Value Measurements (In thousands) Carrying Value Valuation Methods Unobservable Inputs Range Weighted Average (1) December 31, 2020 Individually evaluated loans, net of allowance for credit losses $ 87,084 Appraised value, as adjusted Discount to fair value 0% - 72% 32% Discounted cash flow Discount rate 3.75% - 3.91% 4% Enterprise value Comparables and average multiplier 4.5x - 6.47x 4.95x Enterprise value Discount rates and comparables 9%-15% 12% Other real estate and repossessed assets 6,517 Appraised value, as adjusted Discount to fair value 0% - 20% 10% Estimated closing costs 10% 10% (1)
Summary of Estimated Fair Values of Financial Instruments	The estimated fair values of the Company’s financial instruments are as follows: June 30, 2021 (In thousands) Carrying Amount Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from banks $ 233,534 $ 233,534 $ 233,534 $ — $ — Interest-bearing deposits in other banks 1,861,886 1,861,886 1,861,886 — — Federal funds sold 4,679 4,679 4,679 — — Investment securities available-for-sale 4,277,448 4,277,448 — 4,277,448 — Loans held for sale 35,209 35,209 — 35,209 — Net loans 11,386,770 11,545,560 — — 11,545,560 Derivative assets 39,522 39,522 — 39,522 — Other assets 107,492 107,492 — — 107,492 Financial Liabilities: Deposits 15,983,808 15,988,606 — 15,988,606 — Advances from FHLB 100,000 100,000 — 100,000 — Subordinated debt 143,659 155,565 — 155,565 — Junior subordinated debentures 37,752 48,047 — 48,047 — Notes payable 1,277 1,277 — 1,277 — Derivative liabilities 11,611 11,611 — 11,611 — December 31, 2020 (In thousands) Carrying Amount Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from banks $ 283,261 $ 283,261 $ 283,261 $ — $ — Interest-bearing deposits in other banks 1,768,847 1,768,847 1,768,847 — — Federal funds sold 1,838 1,838 1,838 — — Investment securities available-for-sale 3,332,168 3,332,168 — 3,332,168 — Loans held for sale 47,018 47,018 — 47,018 — Net loans 12,351,969 12,529,458 — — 12,529,458 Derivative assets 56,977 56,977 — 56,977 — Other assets 96,838 96,838 — — 96,838 Financial Liabilities: Deposits 16,052,245 16,059,358 — 16,059,358 — Advances from FHLB 100,000 100,000 — 100,000 — Senior debt 49,986 50,439 — 50,439 — Subordinated debt 183,344 191,438 — 191,438 — Junior subordinated debentures 37,637 42,745 — 42,745 — Notes payable 1,702 1,702 — 1,702 — Derivative liabilities 15,000 15,000 — 15,000 —

Variable Interest Entities an_2

Variable Interest Entities and Other Investments (Tables)	6 Months Ended
	Jun. 30, 2021
Variable Interest Entities And Other Investments [Abstract]
Summary of Investment in Limited Partnerships	The following table presents a summary of the Company’s investments in limited partnerships: (In thousands) June 30, 2021 December 31, 2020 Affordable housing projects (amortized cost) $ 35,716 $ 31,541 Limited partnerships accounted for under the fair value practical expedient of NAV 38,510 30,902 Limited partnerships without readily determinable fair values that do not qualify for the practical expedient of NAV accounted for under the cost method 3,042 7,105 Limited partnerships required to be accounted for under the equity method 15,806 14,646 Total investments in limited partnerships $ 93,074 $ 84,194
Summary of Carrying Amount of Equity Investments Measured Under Measurement Alternative	The carrying amount of equity investments measured under the measurement alternative are as follows: For the Six Months Ended June 30, (In thousands) 2021 2020 Carrying value, Beginning of Year $ 7,105 $ 8,681 Reclassifications 3,103 (1,678 ) Distributions (7,740 ) (440 ) Contributions 574 523 Carrying value, End of Period $ 3,042 $ 7,086

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Summary of Operating Results of Segments	T he following tables present the operating results of the segments as of and for the three and six months ended June 30, 2021 and 2020: Three Months Ended June 30, 2021 (In thousands) Banking Financial Services Corporate Consolidated Net interest income (expense) $ 141,380 $ (40 ) $ (2,799 ) $ 138,541 Provision (release) for credit losses (51,876 ) — — (51,876 ) Noninterest income 33,038 13,114 322 46,474 Noninterest expense 90,027 9,131 6,908 106,066 Income tax expense (benefit) 31,769 480 (2,733 ) 29,516 Net income (loss) $ 104,498 $ 3,463 $ (6,652 ) $ 101,309 Total assets $ 18,577,862 $ 96,712 $ 18,049 $ 18,692,623 Three Months Ended June 30, 2020 (In thousands) Banking Financial Services Corporate Consolidated Net interest income (expense) $ 158,440 $ (58 ) $ (3,668 ) $ 154,714 Provision for credit losses 158,811 — — 158,811 Noninterest income 18,875 10,966 109 29,950 Noninterest expense 78,982 8,262 1,376 88,620 Income tax (benefit) expense (13,677 ) 377 6,647 (6,653 ) Net (loss) income $ (46,801 ) $ 2,269 $ (11,582 ) $ (56,114 ) Total assets $ 18,760,701 $ 92,638 $ 4,414 $ 18,857,753 Six Months Ended June 30, 2021 (In thousands) Banking Financial Services Corporate Consolidated Net interest income (expense) $ 287,500 $ (87 ) $ (6,123 ) $ 281,290 Provision (release) for credit losses (100,138 ) — — (100,138 ) Noninterest income 63,108 26,375 686 90,169 Noninterest expense 176,894 18,461 8,533 203,888 Income tax expense (benefit) 63,923 864 (4,812 ) 59,975 Net income (loss) $ 209,929 $ 6,963 $ (9,158 ) $ 207,734 Total assets $ 18,577,862 $ 96,712 $ 18,049 $ 18,692,623 Six Months Ended June 30, 2020 (In thousands) Banking Financial Services Corporate Consolidated Net interest income (expense) $ 315,998 $ (410 ) $ (7,406 ) $ 308,182 Provision for credit losses 242,240 — — 242,240 Noninterest income (expense) 44,217 21,175 (373 ) 65,019 Noninterest expense 607,046 16,974 2,253 626,273 Income tax (benefit) expense (44,599 ) 473 4,239 (39,887 ) Net (loss) income $ (444,472 ) $ 3,318 $ (14,271 ) $ (455,425 ) Total assets $ 18,760,701 $ 92,638 $ 4,414 $ 18,857,753

Equity-based Compensation (Tabl

Equity-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Activity Related to Restricted Stock Unit Awards	The following table summarizes the activity related to restricted stock unit awards: For the Six Months Ended June 30, 2021 2020 Number of Shares Weighted Average Fair Value per Unit at Award Date Number of Shares Weighted Average Fair Value per Unit at Award Date Non-vested at beginning of period 1,617,945 $ 14.35 1,229,863 $ 19.97 Granted during the period 632,464 21.79 772,881 7.80 Vested during the period (402,964 ) 14.85 (198,075 ) 20.03 Forfeited during the period (138,456 ) 22.22 (60,788 ) 19.40 Non-vested at end of period 1,708,989 $ 16.34 1,743,881 $ 14.59
Summary of Vesting Schedule	The RSU granted include both time and performance-based components. The following table summarizes the vesting schedule for the time-based RSU granted that remain unvested at June 30, 2021: Quarter Ending Annual Vesting Quarterly Vesting Cliff Vesting September 30, 2021 962 March 31, 2022 24,282 103,992 21,653 March 31, 2023 95,920 June 30, 2023 3,018 September 30, 2023 7,426 March 31, 2024 847,135 June 30, 2024 6,900 September 30, 2024 10,000

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Activity within the balances in accumulated other comprehensive income (loss) is shown in the following tables for the six months ended June 30, 2021 and 2020. Six Months Ended June 30, 2021 (In thousands) Unrealized gains (losses) on securities available-for-sale Unrealized gains (losses) on derivative instruments designated as cash flow hedges Accumulated other comprehensive income (loss) Balance at December 31, 2020 $ 65,594 $ 44,492 $ 110,086 Net change (38,892 ) (24,161 ) (63,053 ) Balance at June 30, 2021 $ 26,702 $ 20,331 $ 47,033 Six Months Ended June 30, 2020 (In thousands) Unrealized gains on securities available-for-sale Unrealized gains on derivative instruments designated as cash flow hedges Accumulated other comprehensive income Balance at December 31, 2019 $ 19,605 $ 95,097 $ 114,702 Net change 48,929 109,829 158,758 Balance at June 30, 2020 $ 68,534 $ 204,926 $ 273,460

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Securities Available-for-Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	$ 4,245,206	$ 3,249,067
Securities available-for-sale, Gross Unrealized Gains	60,765	88,193
Securities available-for-sale, Gross Unrealized Losses	28,523	5,092
Securities available-for-sale, Estimated Fair Value	4,277,448	3,332,168
Obligations of U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	302,297	289,565
Securities available-for-sale, Gross Unrealized Gains	937	1,281
Securities available-for-sale, Gross Unrealized Losses	6,086	2,117
Securities available-for-sale, Estimated Fair Value	297,148	288,729
Residential Pass-through | Guaranteed by GNMA
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	119,173	122,366
Securities available-for-sale, Gross Unrealized Gains	2,277	3,029
Securities available-for-sale, Gross Unrealized Losses	260	60
Securities available-for-sale, Estimated Fair Value	121,190	125,335
Residential Pass-through | Issued by FNMA and FHLMC
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	2,676,827	1,870,399
Securities available-for-sale, Gross Unrealized Gains	28,977	47,020
Securities available-for-sale, Gross Unrealized Losses	15,367	530
Securities available-for-sale, Estimated Fair Value	2,690,437	1,916,889
Other Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	230,806	211,860
Securities available-for-sale, Gross Unrealized Gains	3,569	5,143
Securities available-for-sale, Gross Unrealized Losses	1,899	348
Securities available-for-sale, Estimated Fair Value	232,476	216,655
Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	449,284	420,700
Securities available-for-sale, Gross Unrealized Gains	9,302	13,110
Securities available-for-sale, Gross Unrealized Losses	4,168	2,033
Securities available-for-sale, Estimated Fair Value	454,418	431,777
Total MBS
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	3,476,090	2,625,325
Securities available-for-sale, Gross Unrealized Gains	44,125	68,302
Securities available-for-sale, Gross Unrealized Losses	21,694	2,971
Securities available-for-sale, Estimated Fair Value	3,498,521	2,690,656
Obligations of States and Municipal Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	354,819	334,177
Securities available-for-sale, Gross Unrealized Gains	15,458	18,610
Securities available-for-sale, Gross Unrealized Losses	467	4
Securities available-for-sale, Estimated Fair Value	369,810	$ 352,783
Other Domestic Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	12,000
Securities available-for-sale, Gross Unrealized Gains	53
Securities available-for-sale, Estimated Fair Value	12,053
Foreign Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	100,000
Securities available-for-sale, Gross Unrealized Gains	192
Securities available-for-sale, Gross Unrealized Losses	276
Securities available-for-sale, Estimated Fair Value	$ 99,916

Investment Securities - Schedul

Investment Securities - Schedule of Contractual Maturities of Securities Available-for-Sale (Details) $ in Thousands	Jun. 30, 2021USD ($)
Investments Debt And Equity Securities [Abstract]
Available-for-Sale, Due after one year through five years, Amortized Cost	$ 763
Available-for-Sale, Due after five years through ten years, Amortized Cost	224,013
Available-for-Sale, Due after ten years, Amortized Cost	544,340
Available-for-Sale, Mortgage-backed securities, Amortized Cost	3,476,090
Available-for-Sale, Total, Amortized Cost	4,245,206
Available-for-Sale, Due after one year through five years, Estimated Fair Value	756
Available-for-Sale, Due after five years through ten years, Estimated Fair Value	224,471
Available-for-Sale, Due after ten years, Estimated Fair Value	553,700
Available-for-Sale, Mortgage-backed securities, Estimated Fair Value	3,498,521
Available-for-Sale, Total, Estimated Fair Value	$ 4,277,448

Investment Securities - Additio

Investment Securities - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)Security	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)Security	Jun. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Schedule Of Available For Sale Securities [Line Items]
Impairment charges	$ 0	$ 0	$ 0	$ 0
Percentage of fair value of securities in investment portfolio reflect unrealized loss	44.00%		44.00%		17.00%
Number of securities in a loss position for more than twelve months | Security	12		12
Number of securities in a loss position for less than twelve months | Security	153		153
Allowance for credit losses related to available-for-sale securities	$ 0		$ 0		$ 0
Collateral Pledged
Schedule Of Available For Sale Securities [Line Items]
Carrying value of securities pledged	$ 705,600,000		$ 705,600,000		$ 1,300,000,000

Investment Securities - Summa_2

Investment Securities - Summary of Gross Gains, and Gross Losses on Sales of Securities Available for Sale (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Investments Debt And Equity Securities [Abstract]
Gross realized gains	$ 11	$ 2,286	$ 2,272	$ 5,280
Gross realized losses			2
Realized gains, net	$ 11	$ 2,286	$ 2,270	$ 5,280

Investment Securities - Sched_2

Investment Securities - Schedule of Securities Classified as Available-for-Sale with Gross Unrealized Losses Aggregated by Category and Length of Time (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Losses less than 12 Months, Estimated Fair Value	$ 1,876,652	$ 512,210
Losses less than 12 Months, Gross Unrealized Losses	28,208	4,704
Losses more than 12 Months, Estimated Fair Value	21,969	49,134
Losses more than 12 Months, Gross Unrealized Losses	315	388
Obligations of U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Losses less than 12 Months, Estimated Fair Value	211,512	151,172
Losses less than 12 Months, Gross Unrealized Losses	5,772	1,868
Losses more than 12 Months, Estimated Fair Value	21,184	30,658
Losses more than 12 Months, Gross Unrealized Losses	314	249
MBS
Schedule Of Available For Sale Securities [Line Items]
Losses less than 12 Months, Estimated Fair Value	1,572,483	360,197
Losses less than 12 Months, Gross Unrealized Losses	21,693	2,832
Losses more than 12 Months, Estimated Fair Value	785	18,476
Losses more than 12 Months, Gross Unrealized Losses	1	139
Obligations of States and Municipal Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Losses less than 12 Months, Estimated Fair Value	42,933	841
Losses less than 12 Months, Gross Unrealized Losses	467	$ 4
Foreign Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Losses less than 12 Months, Estimated Fair Value	49,724
Losses less than 12 Months, Gross Unrealized Losses	$ 276

Loans Held for Sale, Loans an_3

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Loans Held for Sale by Portfolio Segment at Lower of Amortized Cost or Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Loans held for sale	$ 35,209	$ 47,018
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Loans held for sale	29,219	33,339
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Loans held for sale	736	780
Consumer
Accounts Notes And Loans Receivable [Line Items]
Loans held for sale	$ 5,254	$ 12,899

Loans Held for Sale, Loans an_4

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Loans Held for Sale by Portfolio Segment at Lower of Amortized Cost or Fair Value (Parenthetical) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Accounts Notes And Loans Receivable [Line Items]
Accrued interest receivable			$ 48.2
Loans Held for Sale
Accounts Notes And Loans Receivable [Line Items]
Accrued interest receivable	$ 0.1	$ 0.1

Loans Held for Sale, Loans an_5

Loans Held for Sale, Loans and Allowance for Credit Losses - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)TDR	Jun. 30, 2020USD ($)TDR	Jun. 30, 2021USD ($)TDR	Jun. 30, 2020USD ($)TDR	Dec. 31, 2020USD ($)
Accounts Notes And Loans Receivable [Line Items]
Net accrued interest receivable	$ 44,000,000		$ 44,000,000		$ 47,000,000
Allowance for Credit Losses	$ 51,900,000		100,100,000
Collateral loans impaired			$ 100,000,000
Number of TDRs | TDR	0	0	0	0
Number of TDRs | TDR	3		4	6
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Foreclosed residential properties	$ 21,000		$ 21,000		49,000
Residential Real Estate | Consumer Loans
Accounts Notes And Loans Receivable [Line Items]
Residential mortgage loans in process of foreclosure	1,400,000		1,400,000		$ 1,600,000
General C&I and Energy Sector
Accounts Notes And Loans Receivable [Line Items]
Charge-offs related loans modified into TDRs	$ 5,000		$ 8,800,000
Number of TDRs | TDR	1	3	1	3
Restaurant Industry and General C&I
Accounts Notes And Loans Receivable [Line Items]
Charge-offs related loans modified into TDRs		$ 12,400,000		$ 21,800,000
Number of TDRs | TDR		1		1
Energy Sector
Accounts Notes And Loans Receivable [Line Items]
Number of TDRs | TDR	2		2
Paycheck Protection Program
Accounts Notes And Loans Receivable [Line Items]
Credit Facility, maximum borrowing capacity	$ 2,000,000		$ 2,000,000
Debt instrument, interest rate description			The loans have a 1% fixed interest rate. Loans issued prior to June 5, 2020 are due in two years unless otherwise modified and loans issued after June 5, 2020 are due in five years

Loans Held for Sale, Loans an_6

Loans Held for Sale, Loans and Allowance for Credit Losses - Total Loans Outstanding by Portfolio Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	$ 11,634,502	$ 12,719,129	$ 13,699,097
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	6,289,689	7,251,051	8,103,843
Commercial and Industrial | General C&I
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	3,826,331	4,421,286
Commercial and Industrial | Energy Sector
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	1,235,262	1,310,612
Commercial and Industrial | Restaurant Industry
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	779,846	971,662
Commercial and Industrial | Healthcare
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	448,250	547,491
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	2,880,743	2,913,108	2,976,924
Commercial Real Estate | Industrial, Retail, and Other
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	1,740,144	1,683,975
Commercial Real Estate | Multifamily
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	759,882	776,494
Commercial Real Estate | Office
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	380,717	452,639
Consumer
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	2,464,070	2,554,970	$ 2,618,330
Consumer | Residential
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	2,373,361	2,452,865
Consumer | ConsumerOtherMember
Accounts Notes And Loans Receivable [Line Items]
Total loan outstanding and financing receivable	$ 90,709	$ 102,105

Loans Held for Sale, Loans an_7

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of PPP Loans by Portfolio Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
As a % of total loans	1.90%	7.40%
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Amortized Cost	$ 218,517	$ 938,260
% of PPP Portfolio	100.00%	100.00%
Commercial and Industrial | General C&I
Accounts Notes And Loans Receivable [Line Items]
Amortized Cost	$ 150,121	$ 648,458
% of PPP Portfolio	68.70%	69.10%
Commercial and Industrial | Energy Sector
Accounts Notes And Loans Receivable [Line Items]
Amortized Cost	$ 21,366	$ 76,228
% of PPP Portfolio	9.80%	8.10%
Commercial and Industrial | Restaurant Industry
Accounts Notes And Loans Receivable [Line Items]
Amortized Cost	$ 31,235	$ 134,454
% of PPP Portfolio	14.30%	14.40%
Commercial and Industrial | Healthcare
Accounts Notes And Loans Receivable [Line Items]
Amortized Cost	$ 15,795	$ 79,120
% of PPP Portfolio	7.20%	8.40%

Loans Held for Sale, Loans an_8

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period	$ 308,037		$ 119,643	$ 367,160	$ 119,643
Provision (release) for credit losses	(51,581)	$ 158,206		(98,596)	240,444
Charge-offs	(11,265)	(33,452)		(25,936)	(66,550)
Recoveries	2,541	901		5,104	1,514
Balance at end of period	247,732	370,901		247,732	370,901
Allowance for credit losses, collectively evaluated for impairment	225,684	341,655		225,684	341,655
Allowance for credit losses, individually evaluated for impairment	22,048	29,246		22,048	29,246
Loans collectively evaluated	11,534,546	13,488,203		11,534,546	13,488,203
Loans individually evaluated	99,956	210,894		99,956	210,894
Loans ending balance	11,634,502	13,699,097		11,634,502	13,699,097	$ 12,719,129
Before Adoption
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period		245,246
Balance at end of period			245,246
Cumulative Effect, Period of Adoption, Adjustment
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			$ 75,850		$ 75,850
Accounting Standards Update Extensible List			us-gaap:AccountingStandardsUpdate201613Member		us-gaap:AccountingStandardsUpdate201613Member
Cumulative Effect, Period of Adoption, Adjusted Balance
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			$ 195,493		$ 195,493
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period	165,371		89,796	187,365	89,796
Provision (release) for credit losses	(25,601)	95,325		(35,194)	159,008
Charge-offs	(10,218)	(32,816)		(24,343)	(64,803)
Recoveries	1,757	702		3,481	844
Balance at end of period	131,309	217,796		131,309	217,796
Allowance for credit losses, collectively evaluated for impairment	109,261	189,085		109,261	189,085
Allowance for credit losses, individually evaluated for impairment	22,048	28,711		22,048	28,711
Loans collectively evaluated	6,204,732	7,918,246		6,204,732	7,918,246
Loans individually evaluated	84,957	185,597		84,957	185,597
Loans ending balance	6,289,689	8,103,843		6,289,689	8,103,843	7,251,051
Commercial and Industrial | Before Adoption
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period		154,585
Balance at end of period			154,585
Commercial and Industrial | Cumulative Effect, Period of Adoption, Adjustment
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			32,951		$ 32,951
Accounting Standards Update Extensible List					us-gaap:AccountingStandardsUpdate201613Member
Commercial and Industrial | Cumulative Effect, Period of Adoption, Adjusted Balance
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			122,747		$ 122,747
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period	111,410		15,319	141,187	15,319
Provision (release) for credit losses	(25,253)	59,359		(55,364)	77,158
Charge-offs	(819)	(327)		(1,219)	(806)
Recoveries	577	30		1,311	210
Balance at end of period	85,915	112,480		85,915	112,480
Allowance for credit losses, collectively evaluated for impairment	85,915	111,945		85,915	111,945
Allowance for credit losses, individually evaluated for impairment		535			535
Loans collectively evaluated	2,867,972	2,954,091		2,867,972	2,954,091
Loans individually evaluated	12,771	22,833		12,771	22,833
Loans ending balance	2,880,743	2,976,924		2,880,743	2,976,924	2,913,108
Commercial Real Estate | Before Adoption
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period		53,418
Balance at end of period			53,418
Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjustment
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			20,599		$ 20,599
Accounting Standards Update Extensible List					us-gaap:AccountingStandardsUpdate201613Member
Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjusted Balance
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			35,918		$ 35,918
Consumer
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period	31,256		14,528	38,608	14,528
Provision (release) for credit losses	(727)	3,522		(8,038)	4,278
Charge-offs	(228)	(309)		(374)	(941)
Recoveries	207	169		312	460
Balance at end of period	30,508	40,625		30,508	40,625
Allowance for credit losses, collectively evaluated for impairment	30,508	40,625		30,508	40,625
Loans collectively evaluated	2,461,842	2,615,866		2,461,842	2,615,866
Loans individually evaluated	2,228	2,464		2,228	2,464
Loans ending balance	2,464,070	2,618,330		2,464,070	2,618,330	$ 2,554,970
Consumer | Before Adoption
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period		37,243
Balance at end of period			37,243
Consumer | Cumulative Effect, Period of Adoption, Adjustment
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			22,300		$ 22,300
Accounting Standards Update Extensible List					us-gaap:AccountingStandardsUpdate201613Member
Consumer | Cumulative Effect, Period of Adoption, Adjusted Balance
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			36,828		$ 36,828
Reserve for Unfunded Commitments
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period	1,049		1,699	2,296	1,699
Provision (release) for credit losses	(295)	605		(1,542)	1,796
Balance at end of period	754	3,827		754	3,827
Reserve for Unfunded Commitments | Before Adoption
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period		3,222
Balance at end of period			3,222
Reserve for Unfunded Commitments | Cumulative Effect, Period of Adoption, Adjustment
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			332		$ 332
Accounting Standards Update Extensible List					us-gaap:AccountingStandardsUpdate201613Member
Reserve for Unfunded Commitments | Cumulative Effect, Period of Adoption, Adjusted Balance
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			2,031		$ 2,031
After Reserve For Unfunded Commitments
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period	309,086		121,342	369,456	121,342
Provision (release) for credit losses	(51,876)	158,811		(100,138)	242,240
Charge-offs	(11,265)	(33,452)		(25,936)	(66,550)
Recoveries	2,541	901		5,104	1,514
Balance at end of period	$ 248,486	374,728		$ 248,486	374,728
After Reserve For Unfunded Commitments | Before Adoption
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period		$ 248,468
Balance at end of period			248,468
After Reserve For Unfunded Commitments | Cumulative Effect, Period of Adoption, Adjustment
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			76,182		$ 76,182
Accounting Standards Update Extensible List					us-gaap:AccountingStandardsUpdate201613Member
After Reserve For Unfunded Commitments | Cumulative Effect, Period of Adoption, Adjusted Balance
Accounts Notes And Loans Receivable [Line Items]
Balance at beginning of period			$ 197,524		$ 197,524

Loans Held for Sale, Loans an_9

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Allowance for Credit Losses (Parenthetical) (Details) $ in Millions	Jun. 30, 2020USD ($)
Receivables [Abstract]
Accrued interest receivable	$ 48.2

Loans Held for Sale, Loans a_10

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Credit Quality Indicator And by Origination Year (Details) $ in Thousands	Jun. 30, 2021USD ($)
Financing Receivable Recorded Investment [Line Items]
2021	$ 872,206
2020	1,947,284
2019	1,393,154
2018	1,784,716
2017	1,210,962
2016 and Prior	1,880,479
Revolving Loans	2,485,713
Revolving Credits Converted to Term Loans	59,988
Total	11,634,502
Commercial Portfolio Segment
Financing Receivable Recorded Investment [Line Items]
2021	490,700
2020	901,771
2019	542,184
2018	768,757
2017	572,565
2016 and Prior	804,713
Revolving Loans	2,149,308
Revolving Credits Converted to Term Loans	59,691
Total	6,289,689
Commercial Portfolio Segment | Pass
Financing Receivable Recorded Investment [Line Items]
2021	488,137
2020	876,025
2019	492,297
2018	654,883
2017	533,943
2016 and Prior	735,089
Revolving Loans	1,991,489
Revolving Credits Converted to Term Loans	47,017
Total	5,818,880
Commercial Portfolio Segment | Special mention
Financing Receivable Recorded Investment [Line Items]
2021	2,537
2020	3,574
2019	39,498
2018	28,084
2017	6,265
2016 and Prior	8,452
Revolving Loans	89,362
Revolving Credits Converted to Term Loans	90
Total	177,862
Commercial Portfolio Segment | Substandard
Financing Receivable Recorded Investment [Line Items]
2021	26
2020	22,172
2019	10,389
2018	78,610
2017	24,213
2016 and Prior	57,172
Revolving Loans	65,791
Revolving Credits Converted to Term Loans	12,584
Total	270,957
Commercial Portfolio Segment | Doubtful
Financing Receivable Recorded Investment [Line Items]
2018	7,180
2017	8,144
2016 and Prior	4,000
Revolving Loans	2,666
Total	21,990
Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
2021	129,109
2020	590,040
2019	486,142
2018	605,556
2017	433,126
2016 and Prior	528,164
Revolving Loans	108,556
Revolving Credits Converted to Term Loans	50
Total	2,880,743
Commercial Real Estate | Pass
Financing Receivable Recorded Investment [Line Items]
2021	129,109
2020	579,878
2019	471,646
2018	575,216
2017	363,440
2016 and Prior	470,979
Revolving Loans	108,167
Revolving Credits Converted to Term Loans	50
Total	2,698,485
Commercial Real Estate | Special mention
Financing Receivable Recorded Investment [Line Items]
2020	10,162
2019	41
2018	10,383
2017	30,430
2016 and Prior	12,963
Revolving Loans	191
Total	64,170
Commercial Real Estate | Substandard
Financing Receivable Recorded Investment [Line Items]
2019	14,455
2018	19,957
2017	39,256
2016 and Prior	44,222
Revolving Loans	198
Total	118,088
Consumer
Financing Receivable Recorded Investment [Line Items]
2021	252,397
2020	455,473
2019	364,828
2018	410,403
2017	205,271
2016 and Prior	547,602
Revolving Loans	227,849
Revolving Credits Converted to Term Loans	247
Total	2,464,070
Consumer | Current
Financing Receivable Recorded Investment [Line Items]
2021	252,357
2020	454,353
2019	361,893
2018	404,200
2017	204,476
2016 and Prior	535,254
Revolving Loans	227,461
Revolving Credits Converted to Term Loans	247
Total	2,440,241
Consumer | 30-59 days past due
Financing Receivable Recorded Investment [Line Items]
2020	1,106
2019	1,943
2018	1,847
2017	476
2016 and Prior	6,637
Revolving Loans	138
Total	12,147
Consumer | 60-89 days past due
Financing Receivable Recorded Investment [Line Items]
2021	40
2020	14
2019	211
2018	593
2017	89
2016 and Prior	333
Revolving Loans	250
Total	1,530
Consumer | 90+ days past due
Financing Receivable Recorded Investment [Line Items]
2019	781
2018	3,763
2017	230
2016 and Prior	5,378
Total	$ 10,152

Loans Held for Sale, Loans a_11

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Aging of Past Due Loans By Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	$ 85,789	$ 107,243
Current	11,548,713	12,611,886
Total	11,634,502	12,719,129
90+ Days Past Due and Accruing	988	13,880
30-59 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	35,808	42,368
60-89 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	8,472	18,966
90+ days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	41,509	45,909
Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	40,726	48,004
Current	6,248,963	7,203,047
Total	6,289,689	7,251,051
90+ Days Past Due and Accruing	353	9,130
Commercial and Industrial | 30-59 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	15,749	12,191
Commercial and Industrial | 60-89 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	2,958	12,184
Commercial and Industrial | 90+ days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	22,019	23,629
Commercial and Industrial | General C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	17,665	32,563
Current	3,808,666	4,388,723
Total	3,826,331	4,421,286
90+ Days Past Due and Accruing	353	9,130
Commercial and Industrial | General C&I | 30-59 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	6,512	4,609
Commercial and Industrial | General C&I | 60-89 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	2,661	11,653
Commercial and Industrial | General C&I | 90+ days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	8,492	16,301
Commercial and Industrial | Energy Sector
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	8,906	1,691
Current	1,226,356	1,308,921
Total	1,235,262	1,310,612
Commercial and Industrial | Energy Sector | 90+ days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	8,906	1,691
Commercial and Industrial | Restaurant Industry
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	13,693	13,146
Current	766,153	958,516
Total	779,846	971,662
Commercial and Industrial | Restaurant Industry | 30-59 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	9,123	7,561
Commercial and Industrial | Restaurant Industry | 60-89 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	74	302
Commercial and Industrial | Restaurant Industry | 90+ days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	4,496	5,283
Commercial and Industrial | Healthcare
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	462	604
Current	447,788	546,887
Total	448,250	547,491
Commercial and Industrial | Healthcare | 30-59 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	114	21
Commercial and Industrial | Healthcare | 60-89 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	223	229
Commercial and Industrial | Healthcare | 90+ days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	125	354
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	21,234	26,014
Current	2,859,509	2,887,094
Total	2,880,743	2,913,108
90+ Days Past Due and Accruing	50	125
Commercial Real Estate | Industrial, retail, and other
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	13,701	18,150
Current	1,726,443	1,665,825
Total	1,740,144	1,683,975
90+ Days Past Due and Accruing	50	125
Commercial Real Estate | Multifamily
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	359	198
Current	759,523	776,296
Total	759,882	776,494
Commercial Real Estate | Office
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	7,174	7,666
Current	373,543	444,973
Total	380,717	452,639
Commercial Real Estate | 30-59 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	7,912	13,027
Commercial Real Estate | 30-59 days past due | Industrial, retail, and other
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	7,912	12,619
Commercial Real Estate | 30-59 days past due | Office
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans		408
Commercial Real Estate | 60-89 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	3,984	3,082
Commercial Real Estate | 60-89 days past due | Industrial, retail, and other
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	3,571	2,884
Commercial Real Estate | 60-89 days past due | Multifamily
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	359	198
Commercial Real Estate | 60-89 days past due | Office
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	54
Commercial Real Estate | 90+ days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	9,338	9,905
Commercial Real Estate | 90+ days past due | Industrial, retail, and other
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	2,218	2,647
Commercial Real Estate | 90+ days past due | Office
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	7,120	7,258
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	23,829	33,225
Current	2,440,241	2,521,745
Total	2,464,070	2,554,970
90+ Days Past Due and Accruing	585	4,625
Consumer | Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	23,310	33,041
Current	2,350,051	2,419,824
Total	2,373,361	2,452,865
90+ Days Past Due and Accruing	585	4,625
Consumer | Other
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	519	184
Current	90,190	101,921
Total	90,709	102,105
Consumer | 30-59 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	12,147	17,150
Consumer | 30-59 days past due | Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	12,138	16,971
Consumer | 30-59 days past due | Other
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	9	179
Consumer | 60-89 days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	1,530	3,700
Consumer | 60-89 days past due | Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	1,041	3,695
Consumer | 60-89 days past due | Other
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	489	5
Consumer | 90+ days past due
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	10,152	12,375
Consumer | 90+ days past due | Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	10,131	$ 12,375
Consumer | 90+ days past due | Other
Financing Receivable Recorded Investment Past Due [Line Items]
Age Analysis of Past-Due Loans	$ 21

Loans Held for Sale, Loans a_12

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Nonaccruing Loans by Portfolio Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	$ 122,517	$ 122,517	$ 138,002
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	30,938	30,938
90+ Days Past Due and Accruing	988	988	13,880
Interest Income Recognized	551	1,349
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	92,257	92,257	109,411
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	17,251	17,251
90+ Days Past Due and Accruing	353	353	9,130
Interest Income Recognized	268	793
Commercial and Industrial | General C&I
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	40,901	40,901	34,363
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	3,105	3,105
90+ Days Past Due and Accruing	353	353	9,130
Interest Income Recognized	111	137
Commercial and Industrial | Energy Sector
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	22,100	22,100	20,241
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	11,613	11,613
Interest Income Recognized	38	39
Commercial and Industrial | Restaurant Industry
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	28,597	28,597	53,856
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	2,533	2,533
Interest Income Recognized	119	120
Commercial and Industrial | Healthcare
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	659	659	951
Interest Income Recognized		497
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	14,557	14,557	14,559
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	12,135	12,135
90+ Days Past Due and Accruing	50	50	125
Interest Income Recognized	150	307
Commercial Real Estate | Industrial, Retail, and Other
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	5,992	5,992	7,301
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	3,570	3,570
90+ Days Past Due and Accruing	50	50
Interest Income Recognized	34	120
Commercial Real Estate | Office
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	8,565	8,565	7,258
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	8,565	8,565
Interest Income Recognized	116	187
Consumer
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	15,703	15,703	14,032
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	1,552	1,552
90+ Days Past Due and Accruing	585	585	4,625
Interest Income Recognized	133	249
Consumer | Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	15,682	15,682	14,028
Nonaccrual Loans - Amortized Cost, No Allowance Recorded	1,552	1,552
90+ Days Past Due and Accruing	585	585	4,625
Interest Income Recognized	125	239
Consumer | Other Consumer
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual Loans - Amortized Cost, December 31, 2020	21	21	$ 4
Interest Income Recognized	$ 8	$ 10

Loans Held for Sale, Loans a_13

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Nonaccruing Loans by Portfolio Segment and Class of Financing Receivable (Parenthetical) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Accounts Notes And Loans Receivable [Line Items]
Loans held for sale	$ 35,209	$ 47,018
Accrued interest receivable			$ 48,200
Nonperforming loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for sale		$ 200
Non Accruing Loans | Maximum
Accounts Notes And Loans Receivable [Line Items]
Accrued interest receivable	$ 100

Loans Held for Sale, Loans a_14

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Loan that were Modified Into TDRs (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021USD ($)TDR	Jun. 30, 2021USD ($)TDR	Jun. 30, 2020USD ($)TDR
Financing Receivable Modifications [Line Items]
Number of TDRs	3	4	6
Amortized Cost | $	$ 33,641	$ 35,995	$ 51,752
Energy Sector
Financing Receivable Modifications [Line Items]
Number of TDRs	2	2
Commercial and Industrial | General C&I
Financing Receivable Modifications [Line Items]
Number of TDRs	1	1	3
Amortized Cost | $	$ 15,836	$ 15,836	$ 19,366
Commercial and Industrial | Energy Sector
Financing Receivable Modifications [Line Items]
Number of TDRs	1	1	1
Amortized Cost | $	$ 10,499	$ 10,499	$ 8,140
Commercial and Industrial | Restaurant Industry
Financing Receivable Modifications [Line Items]
Number of TDRs	1	1	2
Amortized Cost | $	$ 7,306	$ 7,306	$ 24,246
Industrial, Retail, and Other
Financing Receivable Modifications [Line Items]
Number of TDRs		1
Amortized Cost | $		$ 2,354

Loans Held for Sale, Loans a_15

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Loan that were Modified Into TDRs (Parenthetical) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Financing Receivable Modifications [Line Items]
Net accrued interest receivable	$ 44	$ 47
Maximum
Financing Receivable Modifications [Line Items]
Net accrued interest receivable	$ 0.1		$ 0.1

Loans Held for Sale, Loans a_16

Loans Held for Sale, Loans and Allowance for Credit Losses - Summary of Types of Loan Modifications that were Modified into TDRs (Details) - TDR	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020
Financing Receivable Modifications [Line Items]
Number of Loans Modified	3	4	6
Rate Concession
Financing Receivable Modifications [Line Items]
Number of Loans Modified			1
Modified Terms and/or Other Concessions
Financing Receivable Modifications [Line Items]
Number of Loans Modified	3	4	5
Energy Sector
Financing Receivable Modifications [Line Items]
Number of Loans Modified	2	2
Commercial and Industrial | General C&I
Financing Receivable Modifications [Line Items]
Number of Loans Modified	1	1	3
Commercial and Industrial | General C&I | Modified Terms and/or Other Concessions
Financing Receivable Modifications [Line Items]
Number of Loans Modified	1	1	3
Commercial and Industrial | Energy Sector
Financing Receivable Modifications [Line Items]
Number of Loans Modified	1	1	1
Commercial and Industrial | Energy Sector | Rate Concession
Financing Receivable Modifications [Line Items]
Number of Loans Modified			1
Commercial and Industrial | Energy Sector | Modified Terms and/or Other Concessions
Financing Receivable Modifications [Line Items]
Number of Loans Modified	1	1
Commercial and Industrial | Restaurant Industry
Financing Receivable Modifications [Line Items]
Number of Loans Modified	1	1	2
Commercial and Industrial | Restaurant Industry | Modified Terms and/or Other Concessions
Financing Receivable Modifications [Line Items]
Number of Loans Modified	1	1	2
Industrial, Retail, and Other
Financing Receivable Modifications [Line Items]
Number of Loans Modified		1
Industrial, Retail, and Other | Modified Terms and/or Other Concessions
Financing Receivable Modifications [Line Items]
Number of Loans Modified		1

Derivatives - Schedule of Notio

Derivatives - Schedule of Notional Amounts and Estimated Fair Values (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Mar. 31, 2020
Derivatives Fair Value [Line Items]
Notional Amount	$ 2,477,648	$ 2,478,225
Fair Value, Other Assets	39,522	56,977
Fair Value, Other Liabilities	11,611	15,000
Cash Flow Hedges
Derivatives Fair Value [Line Items]
Notional Amount			$ 4,000,000
Derivatives Designated as Hedging Instruments | Cash Flow Hedges
Derivatives Fair Value [Line Items]
Notional Amount	350,000	350,000
Fair Value, Other Assets	13,263	22,560
Derivatives Designated as Hedging Instruments | Cash Flow Hedges | Commercial Loans | Interest Rate Swaps
Derivatives Fair Value [Line Items]
Notional Amount	350,000	350,000
Fair Value, Other Assets	13,263	22,560
Derivatives Not Designated as Hedging Instruments
Derivatives Fair Value [Line Items]
Notional Amount	2,127,648	2,128,225
Fair Value, Other Assets	26,259	34,417
Fair Value, Other Liabilities	11,611	15,000
Derivatives Not Designated as Hedging Instruments | Mortgage Loan Held for Sale Interest Rate Lock Commitments
Derivatives Fair Value [Line Items]
Notional Amount	16,192	33,458
Fair Value, Other Assets	261	531
Derivatives Not Designated as Hedging Instruments | Mortgage Loan Held for Sale Floating Commitments
Derivatives Fair Value [Line Items]
Notional Amount	2,421	4,206
Derivatives Not Designated as Hedging Instruments | Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Notional Amount	69,335	89,707
Fair Value, Other Assets	1,399	780
Fair Value, Other Liabilities	1,219	1,058
Derivatives Not Designated as Hedging Instruments | Commercial Loans | Interest Rate Swaps
Derivatives Fair Value [Line Items]
Notional Amount	1,299,146	1,200,581
Fair Value, Other Assets	16,162	20,699
Fair Value, Other Liabilities	2,002	1,647
Derivatives Not Designated as Hedging Instruments | Commercial Loans | Interest Rate Caps
Derivatives Fair Value [Line Items]
Notional Amount	176,015	162,479
Fair Value, Other Assets	9	4
Fair Value, Other Liabilities	9	4
Derivatives Not Designated as Hedging Instruments | Commercial Loans | Interest Rate Floors
Derivatives Fair Value [Line Items]
Notional Amount	560,272	560,048
Fair Value, Other Assets	8,381	11,986
Fair Value, Other Liabilities	8,381	11,986
Derivatives Not Designated as Hedging Instruments | Commercial Loans | Interest Rate Collars
Derivatives Fair Value [Line Items]
Notional Amount		66,665
Fair Value, Other Assets		305
Fair Value, Other Liabilities		305
Derivatives Not Designated as Hedging Instruments | Forward Contracts | Mortgage Loan Forward Sale Commitments
Derivatives Fair Value [Line Items]
Notional Amount	4,268	11,081
Fair Value, Other Assets	$ 47	$ 112

Derivatives - Additional Inform

Derivatives - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended
	Mar. 31, 2020	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative [Line Items]
Obligation to return cash collateral provided by counterparty		$ 11,300			$ 11,300
Pre-tax gains (losses) for derivatives recorded in noninterest income					(18,100)
Derivative, notional amount		2,477,648	$ 2,478,225		$ 2,477,648
Cash Flow Hedges
Derivative [Line Items]
Derivative, notional amount	$ 4,000,000
Realized gain on termination of cash flow hedges collar	$ 261,200
Amortization period of gain reflected in other comprehensive income net of deferred income taxes					amortize into interest income through February 29, 2024
Hedge ineffectiveness gain reclassified from OCI			169,200		$ 0	$ 0
Maximum period for hedging transactions					4 years 8 months 12 days
Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Derivative, notional amount		2,127,648	2,128,225		$ 2,127,648
Derivatives Not Designated as Hedging Instruments | Mortgage Loan Held for Sale Interest Rate Lock Commitments
Derivative [Line Items]
Pre-tax gains (losses) for derivatives recorded in noninterest income		12		$ 215	(270)	526
Derivative, notional amount		16,192	33,458		16,192
Derivatives Not Designated as Hedging Instruments | Foreign Exchange Contracts
Derivative [Line Items]
Pre-tax gains (losses) for derivatives recorded in noninterest income		1,000		$ 687	2,100	$ 1,600
Derivative, notional amount		69,335	89,707		69,335
Interest-bearing Deposits in Banks
Derivative [Line Items]
Cash or securities pledged as collateral		$ 8,200	$ 11,400		$ 8,200

Derivatives - Schedule of Gain

Derivatives - Schedule of Gain (Loss) in Consolidated Statements of Income Related to Derivative Instruments (Details) - Derivatives Designated as Hedging Instruments - Cash Flow Hedges - Commercial Loans - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest Rate Swaps
Derivative Instruments Gain Loss [Line Items]
OCI	$ 2,838	$ 4,046	$ (6,695)	$ 28,081
Reclassified from AOCI to interest income	1,318	981	2,602	876
Interest Rate Collars
Derivative Instruments Gain Loss [Line Items]
OCI				143,199
Reclassified from AOCI to interest income	$ 9,466	$ 16,714	$ 22,278	$ 24,926

Deposits - Additional Informati

Deposits - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Domestic
Time Deposits [Line Items]
Time deposits $250,000 and over	$ 445	$ 486.3

Borrowed Funds - Summary of Deb

Borrowed Funds - Summary of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt issue costs and unamortized premium	$ (1,341)	$ (1,670)
Total senior and subordinated debt	143,659	233,330
Cadence Bancorporation
Debt Instrument [Line Items]
Long-term debt, gross	120,000	210,000
Cadence Bancorporation | 5.375% Senior Notes, Due June 28, 2021
Debt Instrument [Line Items]
Long-term debt, gross		50,000
Cadence Bancorporation | 7.250% Subordinated Notes, Due June 28, 2029, Callable in 2024
Debt Instrument [Line Items]
Long-term debt, gross	35,000	35,000
Cadence Bancorporation | 3-month LIBOR Plus 4.884% Subordinated Notes, Due March 11, 2025, Callable in 2020
Debt Instrument [Line Items]
Long-term debt, gross		40,000
Cadence Bancorporation | 4.750% Subordinated Notes, Due June 30, 2029, Callable in 2024
Debt Instrument [Line Items]
Long-term debt, gross	85,000	85,000
Cadence Bank | 6.250% Subordinated Notes, Due June 28, 2029, Callable in 2024
Debt Instrument [Line Items]
Long-term debt, gross	$ 25,000	$ 25,000

Borrowed Funds - Summary of D_2

Borrowed Funds - Summary of Debt (Parenthetical) (Details)	Jun. 28, 2021	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt instrument, maturity date		Jun. 28, 2021
5.375% Senior Notes, Due June 28, 2021
Debt Instrument [Line Items]
Debt instrument, interest rate	5.375%	5.375%	5.375%
Debt instrument, maturity date	Jun. 28, 2021	Jun. 28, 2021	Jun. 28, 2021
7.250% Subordinated Notes, Due June 28, 2029, Callable in 2024
Debt Instrument [Line Items]
Debt instrument, interest rate		7.25%	7.25%
Debt instrument, maturity date		Jun. 28, 2029	Jun. 28, 2029
3-month LIBOR Plus 4.884% Subordinated Notes, Due March 11, 2025, Callable in 2020
Debt Instrument [Line Items]
Debt instrument, interest rate		4.884%	4.884%
Debt instrument, maturity date		Mar. 11, 2025	Mar. 11, 2025
4.750% Subordinated Notes, Due June 30, 2029, Callable in 2024
Debt Instrument [Line Items]
Debt instrument, interest rate		4.75%	4.75%
Debt instrument, maturity date		Jun. 30, 2029	Jun. 30, 2029
6.250% Subordinated Notes, Due June 28, 2029, Callable in 2024
Debt Instrument [Line Items]
Debt instrument, interest rate		6.25%	6.25%
Debt instrument, maturity date		Jun. 28, 2029	Jun. 28, 2029

Borrowed Funds - Additional Inf

Borrowed Funds - Additional Information (Details) - USD ($)	Jun. 28, 2021	Mar. 11, 2021	Jun. 30, 2021	Dec. 31, 2020
Borrowed Funds [Line Items]
Amount of subordinated debts called		$ 40,000,000
Subordinated notes due date		Mar. 11, 2025
Repayment of debt			$ 50,000,000
Debt instrument, maturity date			Jun. 28, 2021
FHLB advances			$ 100,000,000	$ 100,000,000
FHLB borrowing availability			1,000,000,000
Municipal Deposits
Borrowed Funds [Line Items]
Irrevocable letter of credit			663,000,000	$ 1,300,000,000
Commercial and Residential Real Estate Loan
Borrowed Funds [Line Items]
FHLB advances collateral amount			$ 3,600,000,000
5.375% Senior Notes, Due June 28, 2021
Borrowed Funds [Line Items]
Repayment of debt	$ 50,000,000
Debt instrument, interest rate	5.375%		5.375%	5.375%
Debt instrument, maturity date	Jun. 28, 2021		Jun. 28, 2021	Jun. 28, 2021
Letter of Credit | Municipal Deposits
Borrowed Funds [Line Items]
Borrowings			$ 663,000,000
Expiration on July 6, 2021 | Municipal Deposits
Borrowed Funds [Line Items]
Borrowings			$ 312,000,000
Letter of credit expiration date			Jul. 6, 2021
Expiration on November 30, 2021 | Municipal Deposits
Borrowed Funds [Line Items]
Borrowings			$ 300,000,000
Letter of credit expiration date			Nov. 30, 2021
Expiration on December 31, 2021 | Municipal Deposits
Borrowed Funds [Line Items]
Borrowings			$ 51,000,000
Letter of credit expiration date			Dec. 31, 2021

Borrowed Funds - Summary of Jun

Borrowed Funds - Summary of Junior Subordinated Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Junior subordinated debentures, gross	$ 50,619	$ 50,619
Purchase accounting adjustment, net of amortization	(12,867)	(12,982)
Total junior subordinated debentures	37,752	37,637
3 month LIBOR plus 2.85%, due 2033
Debt Instrument [Line Items]
Junior subordinated debentures, gross	30,000	30,000
3 month LIBOR plus 2.95%, due 2033
Debt Instrument [Line Items]
Junior subordinated debentures, gross	5,155	5,155
3 month LIBOR plus 1.75%, due 2037
Debt Instrument [Line Items]
Junior subordinated debentures, gross	$ 15,464	$ 15,464

Borrowed Funds - Summary of J_2

Borrowed Funds - Summary of Junior Subordinated Debt (Parenthetical) (Details) - Junior subordinated debt	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
3 month LIBOR plus 2.85%, due 2033
Debt Instrument [Line Items]
Debt instrument, interest rate	2.85%	2.85%
Debt instrument maturity year	2033	2033
3 month LIBOR plus 2.95%, due 2033
Debt Instrument [Line Items]
Debt instrument, interest rate	2.95%	2.95%
Debt instrument maturity year	2033	2033
3 month LIBOR plus 1.75%, due 2037
Debt Instrument [Line Items]
Debt instrument, interest rate	1.75%	1.75%
Debt instrument maturity year	2037	2037

Other Noninterest Income and _3

Other Noninterest Income and Other Noninterest Expense - Summary of Other Noninterest Income and Other Noninterest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other noninterest income
Insurance revenue	$ 287	$ 225	$ 558	$ 474
Income from bank owned life insurance policies	1,802	1,220	3,376	2,549
Other	6,022	(1,373)	10,706	(1,953)
Total other noninterest income	8,111	72	14,640	1,070
Other noninterest expenses
Data processing expense	3,179	3,084	6,438	6,436
Software amortization	4,950	4,036	9,457	7,583
Consulting and professional fees	3,736	3,009	6,969	5,715
Loan related expenses	754	735	1,550	1,495
FDIC insurance	1,656	3,939	3,121	6,374
Communications	1,281	1,002	2,524	2,158
Advertising and public relations	1,487	920	2,414	2,384
Legal expenses	594	579	1,518	991
Other	7,998	8,052	17,036	19,688
Total other noninterest expenses	$ 25,635	$ 25,356	$ 51,027	$ 52,824

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 29,516	$ (6,653)	$ 59,975	$ (39,887)
Effective tax rate	22.60%	10.60%	22.40%	8.10%
Net deferred tax asset	$ 49,900		$ 49,900		$ 63,700

Earnings Per Common Share - Rec

Earnings Per Common Share - Reconciliation of Basic and Diluted Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net income (loss) per consolidated statements of operations	$ 101,309	$ 106,425	$ (56,114)	$ (399,311)	$ 207,734	$ (455,425)
Net income allocated to participating securities	(734)				(1,509)
Net income (loss) allocated to common stock	$ 100,575		$ (56,114)		$ 206,225	$ (455,425)
Weighted average common shares outstanding (Basic)	124,732,617		125,924,652		124,904,976	126,277,549
Weighted average dilutive restricted stock units	816,177				679,218
Weighted average common shares outstanding (Diluted)	125,548,794		125,924,652		125,584,194	126,277,549
Earnings (loss) per common share (Basic)	$ 0.81		$ (0.45)		$ 1.65	$ (3.61)
Earnings (loss) per common share (Diluted)	$ 0.80		$ (0.45)		$ 1.64	$ (3.61)

Earnings Per Common Share - Add

Earnings Per Common Share - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Stock Options and Restricted Stock Units
Earnings Per Share [Line Items]
Antidilutive stock options and restricted stock units	$ 169,800	$ 3,098,998	$ 170,642	$ 2,805,761

Regulatory Matters - Additional

Regulatory Matters - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Banking And Thrifts [Abstract]
Describes the potential impact of COVID-19	During 2020, the federal banking agencies issued a final rule to delay the estimated impact on regulatory capital stemming from the adoption of CECL. The agencies granted this relief to allow institutions to focus on lending to customers in light of the strains on the U.S economy due to COVID-19, while also maintaining the quality of regulatory capital. Under the final rule, 100% of the CECL Day 1 impact and 25% of subsequent provisions for credit losses (“Day 2” impacts) are deferred over a two-year year period ending January 1, 2022, at which time this deferred amount will be phased in on a pro rata basis over a three-year period ending January 2025.
Cash on hand	$ 102,500
Repayment of debt	$ 50,000
Debt instrument, maturity date	Jun. 28, 2021

Regulatory Matters - Schedule o

Regulatory Matters - Schedule of Actual Capital Ratios for Company and Bank (Details)	Jun. 30, 2021	Dec. 31, 2020
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 leverage	0.114	0.109
Common equity tier 1 capital	0.147	0.140
Tier 1 risk-based capital	0.147	0.140
Total risk-based capital	0.170	0.167
Cadence Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 leverage	0.116	0.113
Common equity tier 1 capital	0.147	0.141
Tier 1 risk-based capital	0.150	0.145
Total risk-based capital	0.162	0.159

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Summary of Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Commitments to Grant Loans
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Commitments to grant loans	$ 252,835	$ 154,507
Standby Letters of Credit
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Letters of credit	270,086	216,741
Performance Letters of Credit
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Performance letters of credit	18,123	16,065
Commercial Letters of Credit
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Letters of credit	13,261	21,156
Commitments to Extend Credit
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Commitments to extend credit	$ 4,652,103	$ 4,344,268

Commitments and Contingent Li_4

Commitments and Contingent Liabilities - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Unfunded commitments - LLC Investments	$ 58.5	$ 40.6

Disclosure About Fair Values _3

Disclosure About Fair Values of Financial Instruments - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets
Investment securities available-for-sale	$ 4,277,448	$ 3,332,168
Derivative assets	39,522	56,977
Liabilities
Derivative liabilities	11,611	15,000
Carrying Value
Assets
Investment securities available-for-sale	4,277,448	3,332,168
Derivative assets	39,522	56,977
Liabilities
Derivative liabilities	11,611	15,000
Level 2
Assets
Investment securities available-for-sale	4,277,448	3,332,168
Derivative assets	39,522	56,977
Liabilities
Derivative liabilities	11,611	15,000
Fair Value, Measurements, Recurring | Carrying Value
Assets
Investment securities available-for-sale	4,277,448	3,332,168
Derivative assets	39,522	56,977
Other assets	47,513	38,758
Total assets	4,364,483	3,427,903
Liabilities
Derivative liabilities	11,611	15,000
Total recurring basis measured liabilities	11,611	15,000
Fair Value, Measurements, Recurring | Level 2
Assets
Investment securities available-for-sale	4,277,448	3,332,168
Derivative assets	39,522	56,977
Total assets	4,316,970	3,389,145
Liabilities
Derivative liabilities	11,611	15,000
Total recurring basis measured liabilities	11,611	15,000
Fair Value, Measurements, Recurring | Level 3
Assets
Other assets	47,513	38,758
Total assets	$ 47,513	$ 38,758

Disclosure About Fair Values _4

Disclosure About Fair Values of Financial Instruments - Summary of Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net Profits Interests
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 3,282	$ 4,071	$ 3,282	$ 4,330
Net (losses) gains included in earnings	(51)	(338)	(51)	(597)
Distributions received	(144)		(144)
Ending Balance	3,087	3,733	3,087	3,733
Net unrealized (losses) gains included in earnings relating to assets held at the end of the period	(51)	(338)	(51)	(597)
Investments in Limited Partnerships
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	32,480	24,042	30,902	18,742
Net (losses) gains included in earnings	2,426	(1,015)	4,212	(1,331)
Reclassifications		1,203	(2)	1,727
Acquired in settlement of loans				4,257
Contributions paid	5,747	499	7,553	1,783
Distributions received	(2,143)	(98)	(4,155)	(547)
Ending Balance	38,510	24,631	38,510	24,631
Net unrealized (losses) gains included in earnings relating to assets held at the end of the period	2,426	(1,015)	4,212	(1,331)
SBA Servicing Assets
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	4,931	3,942	4,574	3,810
Originations	664	261	1,051	561
Net (losses) gains included in earnings	321	(466)	291	(634)
Ending Balance	5,916	3,737	5,916	3,737
Net unrealized (losses) gains included in earnings relating to assets held at the end of the period	$ 321	$ (466)	$ 291	$ (634)

Disclosure About Fair Values _5

Disclosure About Fair Values of Financial Instruments - Summary of Assets Recorded at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Individually evaluated loans, net of allocated allowance for credit losses	$ 99,956		$ 210,894
Level 2
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Loans held for sale	35,209	$ 47,018
Fair Value, Nonrecurring
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Loans held for sale	35,209	47,018
Individually evaluated loans, net of allocated allowance for credit losses	77,907	87,084
Other real estate and repossessed assets	5,466
Other real estate		6,517
Total assets	118,582	140,619
Fair Value, Nonrecurring | Level 2
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Loans held for sale	35,209	47,018
Total assets	35,209	47,018
Fair Value, Nonrecurring | Level 3
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Individually evaluated loans, net of allocated allowance for credit losses	77,907	87,084
Other real estate and repossessed assets	5,466
Other real estate		6,517
Total assets	$ 83,373	$ 93,601

Disclosure About Fair Values _6

Disclosure About Fair Values of Financial Instruments - Summary of Significant Unobservable Inputs Used in Level 3 Fair Value Measurements for Financial Assets Measured at Fair Value On a Nonrecurring Basis (Details) - Level 3 $ in Thousands		6 Months Ended	12 Months Ended
		Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Discount of Fair Value | Individually Evaluated, Net of Allocated Allowance for Credit Losses
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs		Discount to fair value	Discount to fair value
Discount of Fair Value | Individually Evaluated, Net of Allocated Allowance for Credit Losses | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average		75.00%	72.00%
Discount of Fair Value | Individually Evaluated, Net of Allocated Allowance for Credit Losses | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average		0.00%	0.00%
Discount of Fair Value | Individually Evaluated, Net of Allocated Allowance for Credit Losses | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average	[1]		32.00%
Fair value inputs, discount rate	[1]	0.35
Discount of Fair Value | Individually Evaluated, Net of Allocated Allowance for Credit Losses | Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Carrying Value		$ 77,907	$ 87,084
Discount of Fair Value | Other Real Estate and Repossessed Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs		Discount to fair value	Discount to fair value
Discount of Fair Value | Other Real Estate and Repossessed Assets | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average		20.00%	20.00%
Discount of Fair Value | Other Real Estate and Repossessed Assets | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average		0.00%	0.00%
Discount of Fair Value | Other Real Estate and Repossessed Assets | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average	[1]	10.00%	10.00%
Discount of Fair Value | Other Real Estate and Repossessed Assets | Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Carrying Value		$ 5,466	$ 6,517
Discounted Cash Flow
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs			Discount rate
Discounted Cash Flow | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average			3.91%
Discounted Cash Flow | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average			3.75%
Discounted Cash Flow | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average	[1]		4.00%
Enterprise Value | Comparables and Average Multiplier
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs		Discount rate	Comparables and average multiplier
Enterprise Value | Comparables and Average Multiplier | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average		15.00%
Enterprise Value | Comparables and Average Multiplier | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Range/Weighted Average		11.00%
Enterprise Value | Comparables and Average Multiplier | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements, percentage of enterprise value	[1]	12.00%
Range/Weighted Average	[1]		4.95%
Enterprise Value | Discount Rates and Comparables
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs		Comparables and average multiplier	Discount rates and comparables
Enterprise Value | Discount Rates and Comparables | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements, percentage of enterprise value			15.00%
Enterprise Value | Discount Rates and Comparables | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements, percentage of enterprise value			9.00%
Enterprise Value | Discount Rates and Comparables | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements, percentage of enterprise value	[1]	6.08%
Range/Weighted Average	[1]		12.00%
Estimated Closing Costs
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs		Estimated closing costs	Estimated closing costs
Range/Weighted Average		10.00%	10.00%
Estimated Closing Costs | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements, percentage of enterprise value	[1]	10.00%
[1]	Weighted averages were calculated using the input attribute and the outstanding balance of the loan

Disclosure About Fair Values _7

Disclosure About Fair Values of Financial Instruments - Summary of Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financial Assets:
Interest-bearing deposits with banks	$ 1,861,886	$ 1,768,847
Federal funds sold	4,679	1,838
Investment securities available-for-sale	4,277,448	3,332,168
Derivative assets	39,522	56,977
Other assets	344,499	349,118
Financial Liabilities:
Advances from FHLB	100,000	100,000
Senior debt		49,986
Subordinated debt	143,659	183,344
Junior subordinated debentures	37,752	37,637
Notes payable	1,277	1,702
Derivative liabilities	11,611	15,000
Level 1
Financial Assets:
Cash and due from banks	233,534	283,261
Interest-bearing deposits with banks	1,861,886	1,768,847
Federal funds sold	4,679	1,838
Level 2
Financial Assets:
Investment securities available-for-sale	4,277,448	3,332,168
Loans held for sale	35,209	47,018
Derivative assets	39,522	56,977
Financial Liabilities:
Deposits	15,988,606	16,059,358
Advances from FHLB	100,000	100,000
Senior debt		50,439
Subordinated debt	155,565	191,438
Junior subordinated debentures	48,047	42,745
Notes payable	1,277	1,702
Derivative liabilities	11,611	15,000
Level 3
Financial Assets:
Net loans	11,545,560	12,529,458
Other assets	107,492	96,838
Carrying Value
Financial Assets:
Cash and due from banks	233,534	283,261
Interest-bearing deposits with banks	1,861,886	1,768,847
Federal funds sold	4,679	1,838
Investment securities available-for-sale	4,277,448	3,332,168
Loans held for sale	35,209	47,018
Net loans	11,386,770	12,351,969
Derivative assets	39,522	56,977
Other assets	107,492	96,838
Financial Liabilities:
Deposits	15,983,808	16,052,245
Advances from FHLB	100,000	100,000
Senior debt		49,986
Subordinated debt	143,659	183,344
Junior subordinated debentures	37,752	37,637
Notes payable	1,277	1,702
Derivative liabilities	11,611	15,000
Fair Value
Financial Assets:
Cash and due from banks	233,534	283,261
Interest-bearing deposits with banks	1,861,886	1,768,847
Federal funds sold	4,679	1,838
Investment securities available-for-sale	4,277,448	3,332,168
Loans held for sale	35,209	47,018
Net loans	11,545,560	12,529,458
Derivative assets	39,522	56,977
Other assets	107,492	96,838
Financial Liabilities:
Deposits	15,988,606	16,059,358
Advances from FHLB	100,000	100,000
Senior debt		50,439
Subordinated debt	155,565	191,438
Junior subordinated debentures	48,047	42,745
Notes payable	1,277	1,702
Derivative liabilities	$ 11,611	$ 15,000

Variable Interest Entities an_3

Variable Interest Entities and Other Investments - Additional Information (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2020USD ($)Investment	Dec. 31, 2018Customer	Dec. 31, 2019USD ($)	Dec. 31, 2016Customer
Variable Interest Entities and Other Investments [Line Items]
Cost method investments	$ 3,042,000	$ 7,086,000	$ 3,042,000	$ 7,086,000	$ 7,105,000		$ 8,681,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entities and Other Investments [Line Items]
Investment accounted under fair value practical expedient of net asset value	38,500,000		38,500,000		30,900,000
Loss recognized from assets at fair value		$ 1,000,000		$ 1,300,000
Gain recognized from assets at fair value	2,400,000		4,200,000
Cost method investments	3,000,000		3,000,000		$ 7,100,000
Number of investments fully impaired | Investment					1
Impairment charge					$ 1,900,000
Number of loan customers | Customer								2
Number of loan customers sold | Customer						1
Net profits interest	3,100,000		3,100,000		3,300,000
Variable Interest Entity, Not Primary Beneficiary | Rabbi Trust
Variable Interest Entities and Other Investments [Line Items]
Defined rabbi trust assets and benefit obligation	4,400,000		4,400,000		4,000,000
Variable Interest Entity, Not Primary Beneficiary | Limited Partner
Variable Interest Entities and Other Investments [Line Items]
Equity method investments	15,800,000		15,800,000		14,600,000
Variable Interest Entity, Not Primary Beneficiary | Other Assets
Variable Interest Entities and Other Investments [Line Items]
Investments in affordable Housing Project	$ 35,700,000		$ 35,700,000		$ 31,500,000

Variable Interest Entities an_4

Variable Interest Entities and Other Investments - Summary of Investment in Limited Partnerships (Details) - Investments in Limited Partnerships - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Variable Interest Entities and Other Investments [Line Items]
Affordable housing projects (amortized cost)	$ 35,716	$ 31,541
Limited partnerships accounted for under the fair value practical expedient of NAV	38,510	30,902
Limited partnerships without readily determinable fair values that do not qualify for the practical expedient of NAV accounted for under the cost method	3,042	7,105
Limited partnerships required to be accounted for under the equity method	15,806	14,646
Total investments in limited partnerships	$ 93,074	$ 84,194

Variable Interest Entities an_5

Variable Interest Entities and Other Investments - Summary of Carrying Amount of Equity Investments Measured Under Measurement Alternative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Variable Interest Entities And Other Investments [Abstract]
Carrying value, Beginning of Year	$ 7,105	$ 8,681
Reclassifications	3,103	(1,678)
Distributions	(7,740)	(440)
Contributions	574	523
Carrying value, End of Period	$ 3,042	$ 7,086

Segment Reporting - Additional

Segment Reporting - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Non-cash goodwill impairment charge		$ 443,695
Banking
Segment Reporting Information [Line Items]
Non-cash goodwill impairment charge	$ 443,700

Segment Reporting - Summary of

Segment Reporting - Summary of Operating Results of Segments (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Net interest income (expense)	$ 138,541		$ 154,714		$ 281,290	$ 308,182
Provision (release) for credit losses	(51,876)		158,811		(100,138)	242,240
Noninterest income	46,474		29,950		90,169	65,019
Noninterest income (expense)						65,019
Noninterest expense	106,066		88,620		203,888	626,273
Income tax expense (benefit)	29,516		(6,653)		59,975	(39,887)
Net income (loss)	101,309	$ 106,425	(56,114)	$ (399,311)	207,734	(455,425)
Total assets	18,692,623		18,857,753		18,692,623	18,857,753	$ 18,712,567
Banking
Segment Reporting Information [Line Items]
Net interest income (expense)	141,380		158,440		287,500	315,998
Provision (release) for credit losses	(51,876)		158,811		(100,138)	242,240
Noninterest income	33,038		18,875		63,108
Noninterest income (expense)						44,217
Noninterest expense	90,027		78,982		176,894	607,046
Income tax expense (benefit)	31,769		(13,677)		63,923	(44,599)
Net income (loss)	104,498		(46,801)		209,929	(444,472)
Total assets	18,577,862		18,760,701		18,577,862	18,760,701
Financial Services
Segment Reporting Information [Line Items]
Net interest income (expense)	(40)		(58)		(87)	(410)
Noninterest income	13,114		10,966		26,375
Noninterest income (expense)						21,175
Noninterest expense	9,131		8,262		18,461	16,974
Income tax expense (benefit)	480		377		864	473
Net income (loss)	3,463		2,269		6,963	3,318
Total assets	96,712		92,638		96,712	92,638
Corporate Segment
Segment Reporting Information [Line Items]
Net interest income (expense)	(2,799)		(3,668)		(6,123)	(7,406)
Noninterest income	322		109		686
Noninterest income (expense)						(373)
Noninterest expense	6,908		1,376		8,533	2,253
Income tax expense (benefit)	(2,733)		6,647		(4,812)	4,239
Net income (loss)	(6,652)		(11,582)		(9,158)	(14,271)
Total assets	$ 18,049		$ 4,414		$ 18,049	$ 4,414

Equity-based Compensation - Add

Equity-based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 01, 2018	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2019	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock granted					632,464	772,881
Equity-based compensation expense		$ 3,900	$ 1,200		$ 6,000	$ 2,300
Remaining expense related to unvested restricted stock units		$ 22,000			$ 22,000
Stock options unvested		1,708,989	1,743,881		1,708,989	1,743,881	1,617,945	1,229,863
Restricted Stock Units | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense recognition period					3 months
Restricted Stock Units | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense recognition period					39 months
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expense recognition period					7 months
Expense related to unvested stock option grants		$ 676			$ 676
Stock Options | Executive Officer
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity-based compensation expense		$ 309	$ 309		$ 618	$ 618
Number of options granted				1,602,848
Percentage of premium on common stock value, options granted					15.00%
Weighted-average exercise price					$ 20.43
Award vesting period					3 years
Option expiration period					7 years
Stock options vested					534,283	534,283
Stock options unvested		534,283			534,283
Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares available for grant		7,500,000			7,500,000
Shares of common stock remain available for future grants		2,900,000			2,900,000
Plan | Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock granted					632,464	772,881
Plan | Restricted Stock Units | Minimum [Member] | Half of Units Granted
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award shares to be issued, percentage					0.00%
Plan | Restricted Stock Units | Maximum | Half of Units Granted
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award shares to be issued, percentage					200.00%
2018 Employee Stock Purchase Plan | Common Class A
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity-based compensation expense		$ 57	$ 31		$ 132	$ 45
Percentage of discount on fair market value of common stock	15.00%
Common stock purchased in the open market					38,865	117,481
2018 Employee Stock Purchase Plan | Maximum | Common Class A
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Amount of common stock may be granted	500,000

Equity-based Compensation - Sum

Equity-based Compensation - Summary of Activity Related to Restricted Stock Unit Awards (Details) - Restricted Stock Units - $ / shares	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares, Non-vested at beginning of period	1,617,945	1,229,863
Number of shares, Granted during the period	632,464	772,881
Number of shares, Vested during the period	(402,964)	(198,075)
Number of shares, Forfeited during the period	(138,456)	(60,788)
Number of shares, Non-vested at end of period	1,708,989	1,743,881
Weighted average fair value per unit at award date, Non-vested at beginning of period	$ 14.35	$ 19.97
Weighted average fair value per unit at award date, Granted during the period	21.79	7.80
Weighted average fair value per unit at award date, Vested during the period	14.85	20.03
Weighted average fair value per unit at award date, Forfeited during the period	22.22	19.40
Weighted average fair value per unit at award date, Non-vested at end of period	$ 16.34	$ 14.59

Equity-based Compensation - S_2

Equity-based Compensation - Summary of Vesting Schedule (Details) - Restricted Stock Units - shares	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	1,708,989	1,617,945	1,743,881	1,229,863
Plan | Vesting in September 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	962
Plan | Vesting in March 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	24,282
Plan | Vesting in March 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	95,920
Plan | Vesting in June 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	3,018
Plan | Vesting in September 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	7,426
Plan | Vesting in March 31, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	847,135
Plan | Vesting in June 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	6,900
Plan | Vesting in September 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	10,000
Plan | Quarterly Vesting in March 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	103,992
Plan | Cliff Vesting in March 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of unit expected to vest	21,653

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 2,092,536	$ 2,121,102	$ 2,113,543	$ 2,460,846	$ 2,121,102	$ 2,460,846
Net change	23,834	(86,887)	(7,213)	165,971	(63,053)	158,758
Balance	2,202,738	2,092,536	2,045,480	2,113,543	2,202,738	2,045,480
Unrealized Gains (Losses) on Securities Available for Sale
Accumulated Other Comprehensive Income Loss [Line Items]
Balance		65,594		19,605	65,594	19,605
Net change					(38,892)	48,929
Balance	26,702		68,534		26,702	68,534
Unrealized Gains (Losses) on Derivative Instruments Designated as Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Balance		44,492		95,097	44,492	95,097
Net change					(24,161)	109,829
Balance	20,331		204,926		20,331	204,926
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	23,199	110,086	280,673	114,702	110,086	114,702
Net change	23,834	(86,887)	(7,213)	165,971	(63,053)	158,758
Balance	$ 47,033	$ 23,199	$ 273,460	$ 280,673	$ 47,033	$ 273,460

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - $ / shares	Jul. 22, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020
Subsequent Event [Line Items]
Cash dividends declared per common share		$ 0.15	$ 0.15	$ 0.05	$ 0.175
Subsequent Event | Quarterly Dividend
Subsequent Event [Line Items]
Cash dividends declared per common share	$ 0.15
Subsequent Event | Annualized Dividend
Subsequent Event [Line Items]
Cash dividends declared per common share	$ 0.60