UMB Financial (UMBF) 10-Q 30 Apr 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 24, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Trading Symbol	UMBF
Entity Registrant Name	UMB FINANCIAL CORP
Entity Central Index Key	0000101382
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		48,136,923
Entity Shell Company	false
Entity File Number	001-38481
Entity Tax Identification Number	43-0903811
Entity Address, Address Line One	1010 Grand Boulevard
Entity Address, City or Town	Kansas City
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	64106
City Area Code	(816)
Local Phone Number	860-7000
Title of 12(b) Security	Common Stock, $1.00 Par Value
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	MO

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019
ASSETS
Loans		$ 13,949,710	$ 13,431,722
Allowance for credit losses on loans	[1]	(187,911)	(101,788)
Net loans		13,761,799	13,329,934
Loans held for sale		9,585	7,803
Securities:
Available for sale (amortized cost of $7,353,180 and $7,323,980, respectively)		7,639,451	7,447,362
Held to maturity, net of allowance for credit losses of $3,235 and $0, respectively (fair value of $1,146,909 and $1,082,345, respectively)		1,110,925	1,116,102
Trading securities		61,177	45,618
Other securities		135,194	108,420
Total securities		8,946,747	8,717,502
Federal funds sold and securities purchased under agreements to resell		784,750	1,578,345
Interest-bearing due from banks		1,109,254	1,225,491
Cash and due from banks		340,553	472,958
Premises and equipment, net		297,668	300,334
Accrued income		111,879	124,508
Goodwill		180,867	180,867
Other intangibles, net		25,839	27,597
Other assets		675,945	596,016
Total assets		26,244,886	26,561,355
Deposits:
Noninterest-bearing demand		7,269,520	6,944,465
Interest-bearing demand and savings		12,920,980	13,432,415
Time deposits under $250,000		595,128	611,587
Time deposits of $250,000 or more		389,892	614,777
Total deposits		21,175,520	21,603,244
Federal funds purchased and repurchase agreements		1,890,917	1,896,508
Short-term debt		15,000
Long-term debt		121,582	97,490
Accrued expenses and taxes		216,272	232,200
Other liabilities		162,154	125,473
Total liabilities		23,581,445	23,954,915
SHAREHOLDERS' EQUITY
Common stock, $1.00 par value; 80,000,000 shares authorized; 55,056,730 shares issued, 48,134,601 and 49,097,606 shares outstanding, respectively		55,057	55,057
Capital surplus		1,073,089	1,073,764
Retained earnings		1,646,751	1,672,438
Accumulated other comprehensive income, net		219,390	83,180
Treasury stock, 6,922,129 and 5,959,124 shares, at cost, respectively		(330,846)	(277,999)
Total shareholders' equity		2,663,441	2,606,440
Total liabilities and shareholders' equity		$ 26,244,886	$ 26,561,355
[1]	As of December 31, 2019, this line represents the Allowance for loan losses. See further discussion of this change in Note 3, “New Accounting Pronouncements.”

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Available for sale securities, amortized cost	$ 7,353,180	$ 7,323,980
Held to maturity securities, allowance for credit losses	3,235	0
Held to Maturity, Fair value	$ 1,146,909	$ 1,082,345
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	55,056,730	55,056,730
Common stock, shares outstanding	48,134,601	49,097,606
Treasury stock, shares	6,922,129	5,959,124

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
INTEREST INCOME
Loans		$ 151,026	$ 157,261
Securities:
Taxable interest		27,212	25,391
Tax-exempt interest		24,404	20,697
Total securities income		51,616	46,088
Federal funds and resell agreements		5,452	3,625
Interest-bearing due from banks		2,663	3,899
Trading securities		654	434
Total interest income		211,411	211,307
INTEREST EXPENSE
Deposits		29,732	37,834
Federal funds and repurchase agreements		6,381	8,264
Other		1,357	1,341
Total interest expense		37,470	47,439
Net interest income		173,941	163,868
Provision for credit losses	[1]	88,000	12,350
Net interest income after provision for credit losses		85,941	151,518
NONINTEREST INCOME
Trust and securities processing		47,000	41,957
Trading and investment banking		1,723	5,581
Service charges on deposit accounts		25,081	21,281
Insurance fees and commissions		259	338
Brokerage fees		9,860	7,243
Bankcard fees		16,545	17,067
Gains on sales of securities available for sale, net		1,227	809
Other		(3,271)	13,106
Total noninterest income		98,424	107,382
NONINTEREST EXPENSE
Salaries and employee benefits		111,060	116,032
Occupancy, net		12,180	11,743
Equipment		21,241	19,684
Supplies and services		4,185	3,873
Marketing and business development		4,640	4,913
Processing fees		13,390	12,132
Legal and consulting		6,110	5,633
Bankcard		4,860	4,345
Amortization of other intangible assets		1,734	1,327
Regulatory fees		2,366	2,890
Other		6,853	8,054
Total noninterest expense		188,619	190,626
(Loss) income before income taxes		(4,254)	68,274
Income tax (benefit) expense		(815)	10,530
NET (LOSS) INCOME		$ (3,439)	$ 57,744
PER SHARE DATA
Net (loss) income – basic		$ (0.07)	$ 1.19
Net (loss) income – diluted		(0.07)	1.18
Dividends		$ 0.31	$ 0.30
Weighted average shares outstanding – basic		48,689,876	48,712,153
Weighted average shares outstanding – diluted		48,689,876	48,998,571
[1]	For the three months ended March 31, 2019, this line represents the Provision for loan losses. See further discussion of this change in Note 3, “New Accounting Pronouncements.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (3,439)	$ 57,744
Unrealized gains and losses on debt securities:
Change in unrealized holding gains and losses, net	164,116	106,434
Less: Reclassification adjustment for gains included in net income	(1,227)	(809)
Change in unrealized gains and losses on debt securities during the period	162,889	105,625
Unrealized gains and losses on derivative hedges:
Change in unrealized gains and losses on derivative hedges	14,525	(2,088)
Less: Reclassification adjustment for losses (gains) included in net income	768	(5)
Change in unrealized gains and losses on derivative hedges	15,293	(2,093)
Other comprehensive income, before tax	178,182	103,532
Income tax expense	(41,972)	(25,389)
Other comprehensive income	136,210	78,143
Comprehensive income	$ 132,771	$ 135,887

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands		Total	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock
Beginning Balance at Dec. 31, 2018		$ 2,228,470	$ 55,057	$ 1,054,601	$ 1,488,421	$ (95,782)	$ (273,827)
Total comprehensive (loss) income		135,887			57,744	78,143
Dividends		(14,769)			(14,769)
Purchase of treasury stock		(4,086)					(4,086)
Issuances of equity awards, net of forfeitures		604		2,383			(1,779)
Recognition of equity-based compensation		3,289		3,289
Sale of treasury stock		261		100			161
Exercise of stock options		1,187		257			930
Ending Balance at Mar. 31, 2019		2,350,843	55,057	1,060,630	1,531,396	(17,639)	(278,601)
Beginning Balance at Dec. 31, 2019		2,606,440	55,057	1,073,764	1,672,438	83,180	(277,999)
Total comprehensive (loss) income		132,771			(3,439)	136,210
Dividends		(15,209)			(15,209)
Purchase of treasury stock		(59,386)		(4,500)			(54,886)
Issuances of equity awards, net of forfeitures		593		521			72
Recognition of equity-based compensation		2,817		2,817
Sale of treasury stock		184		95			89
Exercise of stock options		2,270		392			1,878
Cumulative effect adjustments | ASU No. 2016-13 [Member]	[1]	(7,039)			(7,039)
Ending Balance at Mar. 31, 2020		$ 2,663,441	$ 55,057	$ 1,073,089	$ 1,646,751	$ 219,390	$ (330,846)
[1]	Related to the adoption of ASU No. 2016-13. See Note 3, “New Accounting Pronouncements,” for further detail.

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Stockholders Equity [Abstract]
Dividends, per share	$ 0.31	$ 0.30

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
OPERATING ACTIVITIES
Net (loss) income		$ (3,439)	$ 57,744
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Provision for credit losses	[1]	88,000	12,350
Net (accretion) amortization of premiums and discounts from acquisition		(275)	135
Depreciation and amortization		15,591	13,614
Deferred income tax (benefit) expense		(11,134)	295
Net (increase) decrease in trading securities and other earning assets		(17,789)	4,507
Gains on sales of securities available for sale, net		(1,227)	(809)
Gains on sales of assets		(1,922)	(236)
Amortization of securities premiums, net of discount accretion		8,795	8,859
Originations of loans held for sale		(77,129)	(19,156)
Gains on sales of loans held for sale, net		(320)	(177)
Proceeds from sales of loans held for sale		75,667	21,258
Equity-based compensation		3,410	3,893
Net tax benefit related to equity compensation plans		312	539
Changes in:
Accrued income		12,629	(6,839)
Accrued expenses and taxes		(2,803)	(13,319)
Other assets and liabilities, net		(79,008)	(36,453)
Net cash provided by operating activities		9,358	46,205
INVESTING ACTIVITIES
Proceeds from maturities of securities held to maturity		19,507	22,769
Proceeds from sales of securities available for sale		84,439	53,329
Proceeds from maturities of securities available for sale		313,871	267,255
Purchases of securities held to maturity		(18,662)	(1,893)
Purchases of securities available for sale		(422,003)	(579,392)
Payment on low-income housing tax credit investment commitments		(4,039)
Net increase in loans		(525,091)	(383,799)
Net decrease in fed funds sold and resell agreements		793,595	362,229
Net cash activity from acquisitions and divestitures		24
Net increase in interest bearing balances due from other financial institutions		(1,274)	(3,867)
Purchases of premises and equipment		(17,652)	(10,066)
Proceeds from sales of premises and equipment		8,389	2,904
Proceeds from bank-owned and company-owned life insurance death benefit		19
Net cash provided by (used in) investing activities		231,123	(270,531)
FINANCING ACTIVITIES
Net (decrease) increase in demand and savings deposits		(186,380)	332,490
Net decrease in time deposits		(241,344)	(248,535)
Net decrease in fed funds purchased and repurchase agreements		(5,591)	(24,872)
Proceeds from short-term debt		15,000
Repayment of long-term debt			(1,305)
Cash dividends paid		(15,150)	(14,777)
Proceeds from exercise of stock options and sales of treasury shares		2,454	1,448
Purchases of treasury stock		(59,386)	(4,086)
Net cash (used in) provided by financing activities		(490,397)	40,363
Decrease in cash and cash equivalents		(249,916)	(183,963)
Cash and cash equivalents at beginning of period		1,669,170	1,674,121
Cash and cash equivalents at end of period		1,419,254	1,490,158
Supplemental disclosures:
Income tax refunds		(1,530)	(12)
Total interest payments		42,134	$ 39,524
Noncash disclosures:
Acquisition of low-income housing tax credit investments		27,834
Commitment to fund low-income housing tax credit investments		$ 27,834
[1]	For the three months ended March 31, 2019, this line represents the Provision for loan losses. See further discussion of this change in Note 3, “New Accounting Pronouncements.

Financial Statement Presentatio

Financial Statement Presentation	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Financial Statement Presentation	1. Financial Statement Presentation The Consolidated Financial Statements include the accounts of UMB Financial Corporation and its subsidiaries (collectively, the Company) after the elimination of all intercompany transactions. In the opinion of management of the Company, all adjustments relating to items that are of a normal recurring nature and necessary for a fair presentation of the financial position and results of operations have been made. The results of operations and cash flows for the interim periods presented may not be indicative of the results of the full year ending December 31, 2020. The financial statements should be read in conjunction with “Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations” within this Quarterly Report on Form 10-Q (the Form 10-Q) and in conjunction with the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2019, filed with the Securities and Exchange Commission (SEC) on February 27, 2020 (the Form 10-K). The Company is a financial holding company, which offers a wide range of banking and other financial services to its customers through its branches and offices. The Company’s national bank, UMB Bank, National Association (the Bank), has its principal office in Missouri and also has branches in Arizona, Colorado, Illinois, Kansas, Nebraska, Oklahoma, and Texas. The Company also has offices in Pennsylvania, South Dakota, Indiana, Utah, Minnesota, California, and Wisconsin.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. These estimates and assumptions also impact reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. A summary of the significant accounting policies to assist the reader in understanding the financial presentation is provided in the Notes to Consolidated Financial Statements in the Form 10-K. Cash and cash equivalents Cash and cash equivalents includes Cash and due from banks and amounts due from the Federal Reserve Bank (FRB). Cash on hand, cash items in the process of collection, and amounts due from correspondent banks are included in Cash and due from banks. Amounts due from the FRB are interest-bearing for all periods presented and are included in the Interest-bearing due from banks line on the Company’s Consolidated Balance Sheets. This table provides a summary of cash and cash equivalents as presented on the Consolidated Statements of Cash Flows as of March 31, 2020 and March 31, 2019 (in thousands) March 31, 2020 2019 Due from the FRB $ 1,078,701 $ 1,090,771 Cash and due from banks 340,553 399,387 Cash and cash equivalents at end of period $ 1,419,254 $ 1,490,158 Also included in the Interest-bearing due from banks, but not considered cash and cash equivalents, are interest-bearing accounts held at other financial institutions, which totaled $30.6 million and $22.7 million at March 31, 2020 and March 31, 2019, respectively. Per Share Data Basic net (loss) income per share is computed based on the weighted average number of shares of common stock outstanding during each period. Basic and diluted net loss per share were the same at March 31, 2020 as the impact of all potentially dilutive shares was anti-dilutive. Diluted net income per share includes the dilutive effect of 286,418 shares issuable upon the exercise of stock options, nonvested restricted shares, and nonvested restricted stock units granted by the Company and outstanding at March 31, 2019. Certain options, restricted stock and restricted stock units issued under employee benefits plans are excluded from the computation of diluted earnings per share because they were anti-dilutive. At March 31, 2020, all outstanding options, restricted stock and restricted stock units were excluded. At March 31, 2019, 123,384 stock options were excluded. Derivatives The Company records all derivatives on the Consolidated Balance Sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Currently, four of the Company’s derivatives are designated in qualifying hedging relationships. However, the remainder of the Company’s derivatives are not designated in qualifying hedging relationships, as the derivatives are not used to manage risks within the Company’s assets or liabilities. All changes in fair value of the Company’s non-designated derivatives and fair value hedges are recognized directly in earnings. Changes in fair value of the Company’s cash flow hedges are recognized in accumulated other comprehensive income (AOCI) and are reclassified to earnings when the hedged transaction affects earnings.

New Accounting Pronouncements

New Accounting Pronouncements	3 Months Ended
	Mar. 31, 2020
Accounting Changes And Error Corrections [Abstract]
New Accounting Pronouncements	3. New Accounting Pronouncements Leases In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, Leases – Accounting Standards Codification (ASC) Topic 842. In January, July, and December 2018 and March 2019, the FASB issued implementation amendments to the February 2016 ASU (collectively, the amended guidance). The amended guidance changed the accounting treatment of leases, in that lessees recognize most leases on-balance sheet. This increased reported assets and liabilities, as lessees are required to recognize a right-of-use asset along with a lease liability, measured on a discounted basis. The amended guidance allows an entity to choose either the effective date, or the beginning of the earliest comparative period presented in the financial statements, as its date of initial application. The Company adopted the amended guidance on January 1, 2019, using the effective date as the date of initial application. Adoption of the amended guidance resulted in the recording of a right-of-use asset of $58.2 million and a lease liability of $63.0 million to its Consolidated Balance Sheets as of January 1, 2019. Credit Losses In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments.” In April and November 2019, the FASB issued implementation amendments to the June 2016 ASU (collectively, the amended guidance). The amended guidance replaced the current incurred loss methodology for recognizing credit losses with a current expected credit loss (CECL) model, which requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The amended guidance broadened the information that an entity must consider in developing its expected credit loss estimates. Additionally, the updates amended the accounting for credit losses for available-for-sale debt securities and purchased financial assets with a more-than-insignificant amount of credit deterioration since origination. The amended guidance required enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of a company’s loan portfolio. The Company adopted the amended guidance on January 1, 2020 using a modified retrospective approach for adoption. Results for reporting periods beginning after January 1, 2020 are presented under ASC Topic 326, Financial Instruments – Credit Losses , while prior period amounts continue to be reported in accordance with previously applicable Generally Accepted Accounting Principles (GAAP). Upon adoption, the Company recorded a cumulative effect adjustment to the Company’s Consolidated Balance Sheets of $ 9.0 million as increase to the allowance for credit losses and $ 7.0 million as a reduction to retained earnings, net of deferred tax balances. See Note 4, “Loans and Allowance for Credit Losses” for related disclosures .

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Loans and Allowance for Credit Losses	4. Loans and Allowance for Credit Losses The Company adopted the CECL methodology for measuring credit losses as of January 1, 2020. All disclosures as of and for the three months ended March 31, 2020 are presented in accordance with ASC 326, Financial Instruments – Credit Losses Loan Origination/Risk Management The Company has certain lending policies and procedures in place that are designed to minimize the level of risk within the loan portfolio. Diversification of the loan portfolio manages the risk associated with fluctuations in economic conditions. Authority levels are established for the extension of credit to ensure consistency throughout the Company. It is necessary that policies, processes and practices implemented to control the risks of individual credit transactions and portfolio segments are sound and adhered to. The Company maintains an independent loan review department that reviews and validates the risk assessment on a continual basis. Management regularly evaluates the results of the loan reviews. The loan review process complements and reinforces the risk identification and assessment decisions made by lenders and credit personnel, as well as the Company’s policies and procedures. Commercial and industrial loans are underwritten after evaluating and understanding the borrower’s ability to operate profitably and prudently expand its business. Commercial loans are made based on the identified cash flows of the borrower and on the underlying collateral provided by the borrower. The cash flows of the borrower, however, may not be as expected and the collateral securing these loans may fluctuate in value. Most commercial loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee. In the case of loans secured by accounts receivable, the availability of funds for the repayment of these loans may be substantially dependent on the ability of the borrower to collect amounts from its customers. Specialty lending loans include Asset-based and Factoring loans. Asset-based loans are offered primarily in the form of revolving lines of credit to commercial borrowers that do not generally qualify for traditional bank financing. Asset-based loans are underwritten based primarily upon the value of the collateral pledged to secure the loan, rather than on the borrower’s general financial condition. The Company utilizes pre-loan due diligence techniques, monitoring disciplines, and loan management practices common within the asset-based lending industry to underwrite loans to these borrowers. Factoring loans provide working capital through the purchase and/or financing of accounts receivable to borrowers in the transportation industry and to commercial borrowers that do not generally qualify for traditional bank financing. Commercial real estate loans are subject to underwriting standards and processes similar to commercial loans, in addition to those of real estate loans. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves higher loan principal amounts, and the repayment of these loans is largely dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. The Company requires that an appraisal of the collateral be made at origination and on an as-needed basis, in conformity with current market conditions and regulatory requirements. The underwriting standards address both owner and non-owner occupied real estate. Also included in Commercial real estate are Construction loans that are underwritten using feasibility studies, independent appraisal reviews, sensitivity analysis or absorption and lease rates, and financial analysis of the developers and property owners. Construction loans are based upon estimates of costs and value associated with the complete project. Construction loans often involve the disbursement of substantial funds with repayment substantially dependent on the success of the ultimate project. Sources of repayment for these types of loans may be pre-committed permanent loans, sales of developed property or an interim loan commitment from the Company until permanent financing is obtained. These loans are closely monitored by on-site inspections and are considered to have higher risks than other real estate loans due to their repayment being sensitive to interest rate changes, governmental regulation of real property, economic conditions, and the availability of long-term financing. Consumer real estate loans, including residential real estate and home equity loans , are underwritten based on the borrower’s loan-to-value percentage, collection remedies, and overall credit history. Consumer loans are underwritten based on the borrower’s repayment ability. The Company monitors delinquencies on all of its consumer loans and leases. The underwriting and review practices combined with the relatively small loan amounts that are spread across many individual borrowers, minimizes risk. Consumer loans and leases that are 90 days past due or more are considered non-performing. Credit cards include both commercial and consumer credit cards. Commercial credit cards are generally unsecured and are underwritten with criteria similar to commercial loans, including an analysis of the borrower’s cash flow, available business capital, and overall credit-worthiness of the borrower. Consumer credit cards are underwritten based on the borrower’s repayment ability. The Company monitors delinquencies on all of its consumer credit cards and periodically reviews the distribution of FICO scores relative to historical periods to monitor credit risk on its consumer credit card loans. Credit risk is a potential loss resulting from nonpayment of either the primary or secondary exposure. Credit risk is mitigated with formal risk management practices and a thorough initial credit-granting process including consistent underwriting standards and approval process. Control factors or techniques to minimize credit risk include knowing the client, understanding total exposure, analyzing the client and debtor’s financial capacity, and monitoring the client’s activities. Credit risk and portions of the portfolio risk are managed through concentration considerations, average risk ratings, and other aggregate characteristics. Loan Aging Analysis This table provides a summary of loan classes and an aging of past due loans at March 31, 2020 and December 31, 2019 (in thousands): March 31, 2020 30-89 Days Past Due and Accruing Greater than 90 Days Past Due and Accruing Non- Accrual Loans Total Past Due Current Total Loans Loans Commercial and industrial $ 8,663 $ 34 $ 42,613 $ 51,310 $ 5,901,054 $ 5,952,364 Specialty lending — — 1,455 1,455 521,970 523,425 Commercial real estate 7,180 115 46,379 53,674 5,230,113 5,283,787 Consumer real estate 1,282 154 5,521 6,957 1,437,554 1,444,511 Consumer 124 23 184 331 146,390 146,721 Credit cards 2,175 1,885 808 4,868 368,739 373,607 Leases and other — — 69 69 225,226 225,295 Total loans $ 19,424 $ 2,211 $ 97,029 $ 118,664 $ 13,831,046 $ 13,949,710 December 31, 2019 30-89 Days Past Due and Accruing Greater than 90 Days Past Due and Accruing Non- Accrual Loans Total Past Due Current Total Loans Loans Commercial: Commercial $ 10,491 $ 250 $ 25,592 $ 36,333 $ 5,805,669 $ 5,842,002 Asset-based — — — — 292,231 292,231 Factoring — — — — 170,560 170,560 Commercial – credit card 760 52 24 836 181,402 182,238 Real estate: Real estate – construction 3,933 — 95 4,028 838,318 842,346 Real estate – commercial 3,365 36 24,030 27,431 4,301,293 4,328,724 Real estate – residential 485 — 2,748 3,233 930,043 933,276 Real estate – HELOC 544 — 2,798 3,342 474,809 478,151 Consumer: Consumer – credit card 1,835 1,681 803 4,319 222,423 226,742 Consumer – other 81 50 257 388 133,086 133,474 Leases — — — — 1,978 1,978 Total loans $ 21,494 $ 2,069 $ 56,347 $ 79,910 $ 13,351,812 $ 13,431,722 The Company sold consumer real estate loans with proceeds of $75.7 million and $21.3 million in the secondary market without recourse during the three months ended March 31, 2020 and March 31, 2019, respectively. The Company has ceased the recognition of interest on loans with a carrying value of $97.0 million and $56.3 million at March 31, 2020 and December 31, 2019, respectively. Restructured loans totaled $14.3 million and $19.8 million at March 31, 2020 and December 31, 2019, respectively. Loans 90 days past due and still accruing interest amounted to $2.2 million and $2.1 million at March 31, 2020 and December 31, 2019, respectively. All interest accrued but not received for loans placed on nonaccrual is reversed against interest income. There was an insignificant amount of interest reversed related to loans on nonaccrual during 2020. Nonaccrual loans with no related allowance for credit losses totaled $68.2 million at March 31, 2020. The following table provides the amortized cost of nonaccrual loans with no related allowance for credit losses by loan class at March 31, 2020 (in thousands): March 31, 2020 Non- Accrual Loans Amortized Cost of Non-Accrual Loans with no related Allowance Loans Commercial and industrial $ 42,613 $ 22,102 Specialty lending 1,455 1,011 Commercial real estate 46,379 38,495 Consumer real estate 5,521 5,521 Consumer 184 184 Credit cards 808 808 Leases and other 69 69 Total loans $ 97,029 $ 68,190 Amortized Cost The following disclosure is presented in accordance with ASC 326. The following table provides a summary of the amortized cost balance of each of the Company’s loan classes disaggregated by collateral type and origination year as of March 31, 2020 (in thousands): March 31, 2020 Amortized Cost - Revolving Loans Amortized Cost - Revolving Loans Converted to Term Loans Loan Segment and Type Amortized Cost Basis by Origination Year - Term Loans 2020 2019 2018 2017 2016 Prior Total Commercial and industrial: Equipment/Accounts Receivable/Inventory $ 955,311 $ 1,012,606 $ 660,657 $ 267,071 $ 235,386 $ 186,903 $ 2,429,565 $ 10,701 $ 5,758,200 Agriculture 967 12,068 3,946 6,332 4,556 1,949 148,744 — 178,562 Overdrafts — — — — — — 15,602 — 15,602 Total Commercial and industrial 956,278 1,024,674 664,603 273,403 239,942 188,852 2,593,911 10,701 5,952,364 Specialty lending: Asset-based lending 8,503 61,289 — — — — 286,844 — 356,636 Factoring — — — — — — 166,789 — 166,789 Total Specialty lending 8,503 61,289 — — — — 453,633 — 523,425 Commercial real estate: Owner-occupied 89,443 426,334 300,415 237,437 175,338 290,695 30,328 17,368 1,567,358 Non-owner-occupied 111,865 566,992 288,939 267,792 263,488 279,534 69,403 73,130 1,921,143 Farmland 22,470 75,807 54,607 52,831 92,875 77,722 50,267 177 426,756 5+ Multi-family 7,257 110,450 48,822 91,199 119,504 11,714 1,770 — 390,716 1-4 Family construction — — — — — — 40,463 — 40,463 General construction 7,750 4,807 5,857 936 548 2,957 910,394 4,102 937,351 Total Commercial real estate 238,785 1,184,390 698,640 650,195 651,753 662,622 1,102,625 94,777 5,283,787 Consumer real estate: HELOC 17,606 23,227 13,430 454 86 2,916 419,468 — 477,187 First lien: 1-4 family 119,235 358,923 110,014 126,240 111,528 118,687 1,412 — 946,039 Junior lien: 1-4 family 2,298 9,308 3,559 2,267 1,201 2,361 291 — 21,285 Total Consumer real estate 139,139 391,458 127,003 128,961 112,815 123,964 421,171 — 1,444,511 Consumer: Revolving line — — — — — 85 85,927 — 86,012 Auto 4,314 13,670 5,117 3,110 1,553 1,036 — — 28,800 Other 1,245 8,509 3,156 638 1,271 355 16,735 — 31,909 Total Consumer 5,559 22,179 8,273 3,748 2,824 1,476 102,662 — 146,721 Credit cards: Consumer — — — — — — 203,318 — 203,318 Commercial — — — — — — 170,289 — 170,289 Total Credit cards — — — — — — 373,607 — 373,607 Leases and other: Leases — 557 — 833 — 769 — — 2,159 Other 586 12,693 9,470 3,444 2,414 5,889 188,640 — 223,136 Total Leases and other 586 13,250 9,470 4,277 2,414 6,658 188,640 — 225,295 Total loans $ 1,348,850 $ 2,697,240 $ 1,507,989 $ 1,060,584 $ 1,009,748 $ 983,572 $ 5,236,249 $ 105,478 $ 13,949,710 Accrued interest on loans totaled $44.1 million as of March 31, 2020 and is included in the Accrued income line on the Company’s Consolidated Balance Sheets. The total amount of accrued interest is excluded from the amortized cost basis of loans presented above. Further, the Company has elected not to measure an allowance for credit losses for accrued interest receivables. Credit Quality Indicators As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including trends related to the risk grading of specified classes of loans, net charge-offs, non-performing loans, and general economic conditions. The Company utilizes a risk grading matrix to assign a rating to each of its commercial, commercial real estate, and construction real estate loans. The loan ratings are summarized into the following categories: Non-watch list, Watch, Special Mention, Substandard, and Doubtful. Any loan not classified in one of the categories described below is considered to be a Non-watch list loan. A description of the general characteristics of the loan rating categories is as follows: • Watch – This rating represents credit exposure that presents higher than average risk and warrants greater than routine attention by Company personnel due to conditions affecting the borrower, the borrower’s industry or the economic environment. These conditions have resulted in some degree of uncertainty that results in higher than average credit risk. • Special Mention – This rating reflects a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or the borrower’s credit position at some future date. The rating is not adversely classified and does not expose an institution to sufficient risk to warrant adverse classification. • Substandard – This rating represents an asset inadequately protected by the current sound worth and paying capacity of the borrower or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. Loans in this category are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets classified as substandard. • Doubtful – This rating represents an asset that has all the weaknesses inherent in an asset classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, based on currently existing facts, conditions and values, highly questionable and improbable. The possibility of loss is extremely high, but because of certain important and reasonably specific pending factors, which may work to the advantage of strengthening the asset, its classification as an estimated loss is deferred until its more exact status may be determined. Pending factors include proposed merger, acquisition, liquidation procedures, capital injection, or perfecting liens. Commercial and industrial A discussion of the credit quality indicators that impact each type of collateral securing Commercial and industrial loans is included below: Equipment, accounts receivable, and inventory General commercial and industrial loans are secured by working capital assets and non-real estate assets. The general purpose of these loans is for financing capital expenditures and current operations for commercial and industrial entities. These assets are short-term in nature. In the case of accounts receivable and inventories, the repayment of debt is reliant upon converting assets into cash or through goods and services being sold and collected. Collateral based-risk is due to aged short-term assets, which can be indicative of underlying issues with the borrower and lead to the value of the collateral being overstated. Agriculture Agricultural loans are secured by non-real estate agricultural assets. These include shorter-term assets such as equipment, crops, and livestock. The risks associated with loans to finance crops or livestock include the borrower’s ability to successfully raise and market the commodity. Adverse weather conditions and other natural perils can dramatically affect farmers’ or ranchers’ production and ability to service debt. Volatile commodity prices present another significant risk for agriculture borrowers. Market price volatility and production cost volatility can affect both revenues and expenses. Overdrafts Commercial overdrafts are typically short-term and unsecured. Some commercial borrowers tie their overdraft obligation to their line of credit, so any draw on the line of credit will satisfy the overdraft. Based on the factors noted above for each type of collateral, the Company assigns risk ratings to borrowers based on their most recently assessed financial position. The following table provides a summary of the amortized cost balance by collateral type and risk rating as of March 31, 2020 (in thousands): March 31, 2020 Amortized Cost - Revolving Loans Amortized Cost - Revolving Loans Converted to Term Loans Risk by Collateral Amortized Cost Basis by Origination Year - Term Loans 2020 2019 2018 2017 2016 Prior Total Equipment/Accounts Receivable/Inventory Non-watch list $ 889,106 $ 970,210 $ 608,207 $ 249,951 $ 198,513 $ 182,297 $ 2,231,968 $ 6,191 $ 5,336,443 Watch 28,487 17,722 40,462 6,142 25,592 3,224 82,337 — 203,966 Special Mention 97 408 2,366 2,251 9,240 624 27,778 3,990 46,754 Substandard 37,621 24,127 9,622 2,947 2,041 719 87,157 520 164,754 Doubtful — 139 — 5,780 — 39 325 — 6,283 Total Equipment/Accounts Receivable/Inventory $ 955,311 $ 1,012,606 $ 660,657 $ 267,071 $ 235,386 $ 186,903 $ 2,429,565 $ 10,701 $ 5,758,200 Agriculture Non-watch list $ 832 $ 10,113 $ 3,374 $ 2,991 $ 3,982 $ 1,769 $ 102,899 $ — $ 125,960 Watch 135 161 532 144 503 45 12,223 — 13,743 Special Mention — 475 22 163 22 — 3,285 — 3,967 Substandard — 1,319 18 3,034 49 135 30,337 — 34,892 Doubtful — — — — — — — — — Total Agriculture $ 967 $ 12,068 $ 3,946 $ 6,332 $ 4,556 $ 1,949 $ 148,744 $ — $ 178,562 Specialty lending A discussion of the credit quality indicators that impact each type of collateral securing Specialty loans is included below: Asset-based lending General asset-based loans are secured by accounts receivable, inventory, equipment, and real estate. The purpose of these loans is for financing current operations for commercial customers. The repayment of debt is reliant upon collection of the accounts receivable within 30 to 90 days or converting assets into cash or through goods and services being sold and collected. The Company tracks each individual borrower credit risk based on their loan to collateral position. Any borrower position where the underlying value of collateral is below the fair value of the loan is considered out-of-margin and inherently higher risk. Factoring General factoring loans are secured by accounts receivable. The purpose of these loans is for financing current operations for trucking or other commercial customers. The repayment of debt is reliant upon collection of the accounts receivable within 30 to 90 days. The Company tracks each individual borrower credit risk based on their loan to collateral position. Any borrower that has experienced a position where the underlying value of collateral is below the fair value of the loan is considered out-of-margin and inherently higher risk. The following table provides a summary of the amortized cost balance by collateral type and risk rating as of March 31, 2020 (in thousands): March 31, 2020 Risk Asset-based lending Factoring In-margin $ 350,487 $ 23,160 Out-of-margin 6,149 143,629 Total $ 356,636 $ 166,789 Commercial real estate A discussion of the credit quality indicators that impact each type of collateral securing Commercial real estate loans is included below: Owner-occupied Owner-occupied loans are secured by commercial real estate. These loans are often longer tenured and susceptible to multiple economic cycles. The loans rely on the owner-occupied operations to service debt which cover a broad spectrum of industries. Real estate debt can carry a significant amount of leverage for a borrower to maintain. Non-owner-occupied Non-owner-occupied loans are secured by commercial real estate. These loans are often longer tenured and susceptible to multiple economic cycles. The key element of risk in this type of lending is the cyclical nature of real estate markets. Although national conditions affect the overall real estate industry, the effect of national conditions on local markets is equally important. Factors such as unemployment rates, consumer demand, household formation, and the level of economic activity can vary widely from state to state and among metropolitan areas. In addition to geographic considerations, markets can be defined by property type. While all sectors are influenced by economic conditions, some sectors are more sensitive to certain economic factors than others. Farmland Farmland loans are secured by real estate used for agricultural purposes such as crop and livestock production. Assets used as collateral are long-term assets that carry the ability to have longer amortizations and maturities. Longer terms carry the risk of added susceptibility to market conditions. The limited purpose of some Agriculture-related collateral affects credit risk because such collateral may have limited or no other uses to support values when loan repayment problems emerge. 5+ Multi-family 5+ multi-family loans are secured by a multi-family residential property. The primary risks associated with this type of collateral are largely driven by economic conditions. The national and local market conditions can change with unemployment rates or competing supply of multi-family housing. Tenants may not be able to afford their housing or have better options and this can result in increased vacancy. Rents may need to be lowered to fill apartment units. Increased vacancy and lower rental rates not only drive the borrower’s ability to repay debt but also contribute to how the collateral is valued. 1-4 Family construction 1-4 family construction loans are secured by 1-4 family residential real estate and are in the process of construction or improvements being made. The predominant risk inherent to this portfolio is the risk associated with a borrower’s ability to successfully complete a project on time and within budget. Market conditions also play an important role in understanding the risk profile. Risk from adverse changes in market conditions from the start of development to completion can result in deflated collateral values General construction General construction loans are secured by commercial real estate in process of construction or improvements being made and their repayment is dependent on the collateral’s completion. Construction lending presents unique risks not encountered in term financing of existing real estate. The predominant risk inherent to this portfolio is the risk associated with a borrower’s ability to successfully complete a project on time and within budget. Commercial properties under construction are susceptible to market and economic conditions. Demand from prospective customers may erode after construction begins because of a general economic slowdown or an increase in the supply of competing properties. Based on the factors noted above for each type of collateral, the Company assigns risk ratings to borrowers based on their most recently assessed financial position. The following table provides a summary of the amortized cost balance by collateral type and risk rating as of March 31, 2020 (in thousands): March 31, 2020 Amortized Cost - Revolving Loans Amortized Cost - Revolving Loans Converted to Term Loans Risk by Collateral Amortized Cost Basis by Origination Year - Term Loans 2020 2019 2018 2017 2016 Prior Total Owner-occupied Non-watch list $ 84,399 $ 418,347 $ 252,193 $ 203,728 $ 166,497 $ 281,410 $ 18,351 $ 17,368 $ 1,442,293 Watch — 6,398 35,581 — — 502 — — 42,481 Special Mention — 990 6,327 1,722 2,100 1,987 43 — 13,169 Substandard 5,044 599 6,314 31,987 6,102 6,796 11,934 — 68,776 Doubtful — — — — 639 — — — 639 Total Owner-occupied $ 89,443 $ 426,334 $ 300,415 $ 237,437 $ 175,338 $ 290,695 $ 30,328 $ 17,368 $ 1,567,358 Non-owner-occupied Non-watch list $ 111,681 $ 566,241 $ 288,939 $ 260,214 $ 260,735 $ 273,040 $ 69,403 $ 73,130 $ 1,903,383 Watch — 300 — 7,578 1,983 5,105 — — 14,966 Special Mention — — — — — 1,329 — — 1,329 Substandard 184 451 — — 770 60 — — 1,465 Doubtful — — — — — — — — — Total Non-owner-occupied $ 111,865 $ 566,992 $ 288,939 $ 267,792 $ 263,488 $ 279,534 $ 69,403 $ 73,130 $ 1,921,143 Farmland Non-watch list $ 20,730 $ 56,685 $ 31,484 $ 38,394 $ 65,139 $ 34,394 $ 27,597 $ 177 $ 274,600 Watch 123 3,727 15,251 6,299 5,294 26,809 19,193 — 76,696 Special Mention — — 1,220 510 1,462 507 205 — 3,904 Substandard 1,617 15,395 6,652 7,628 20,980 16,012 3,272 — 71,556 Doubtful — — — — — — — — — Total Farmland $ 22,470 $ 75,807 $ 54,607 $ 52,831 $ 92,875 $ 77,722 $ 50,267 $ 177 $ 426,756 5+ Multi-family Non-watch list $ 7,257 $ 107,990 $ 48,822 $ 89,850 $ 111,374 $ 11,714 $ 1,770 $ — $ 378,777 Watch — — — 1,349 — — — — 1,349 Special Mention — 2,460 — — 6,269 — — — 8,729 Substandard — — — — 1,861 — — — 1,861 Doubtful — — — — — — — — — Total 5+ Multi-family $ 7,257 $ 110,450 $ 48,822 $ 91,199 $ 119,504 $ 11,714 $ 1,770 $ — $ 390,716 1-4 Family construction Non-watch list $ — $ — $ — $ — $ — $ — $ 40,463 $ — $ 40,463 Watch — — — — — — — — — Special Mention — — — — — — — — — Substandard — — — — — — — — — Doubtful — — — — — — — — — Total 1-4 Family construction $ — $ — $ — $ — $ — $ — $ 40,463 $ — $ 40,463 General construction Non-watch list $ 6,828 $ 4,713 $ 5,689 $ 936 $ 548 $ 2,957 $ 907,000 $ 4,102 $ 932,773 Watch 617 — — — — — — — 617 Special Mention 305 — — — — — — — 305 Substandard — — 168 — — — 3,394 — 3,562 Doubtful — 94 — — — — — — 94 Total General construction $ 7,750 $ 4,807 $ 5,857 $ 936 $ 548 $ 2,957 $ 910,394 $ 4,102 $ 937,351 Consumer real estate A discussion of the credit quality indicators that impact each type of collateral securing Consumer real estate loans is included below: HELOC HELOC loans are revolving lines of credit secured by 1-4 family residential property. The primary risk is the borrower’s inability to repay debt. Revolving notes are often associated with HELOCs that can be secured by real estate without a 1st lien priority. Collateral is susceptible to market volatility impacting home values or economic downturns. First lien: 1-4 family First lien 1-4 family loans are secured by a first lien on 1-4 family residential property. These term loans carry longer maturities and amortizations. The longer tenure exposes the borrower to multiple economic cycles, coupled with longer amortizations that result in smaller principal reduction early in the life of the loan. Collateral is susceptible to market volatility impacting home values. Junior lien: 1-4 family Junior lien 1-4 family loans are secured by a junior lien on 1-4 family residential property. The Company’s primary risk is the borrower’s inability to repay debt and not being in a priority lien position. Collateral is susceptible to market volatility impacting home values or economic downturns. A borrower is considered non-performing if the Company has ceased the recognition of interest and the loan is placed on non-accrual. Charge-offs and borrower performance are tracked on a loan origination vintage basis. Certain vintages, based on their maturation cycle, could be at higher risk due to collateral-based risk factors. The following table provides a summary of the amortized cost balance by collateral type and risk rating as of March 31, 2020 (in thousands): March 31, 2020 Risk HELOC First lien: 1-4 family Junior lien: 1-4 family Performing $ 473,836 $ 943,957 $ 21,196 Nonperforming: 2020 — — — 2019 190 138 — 2018 130 78 49 2017 208 1,072 — 2016 144 472 24 Prior to 2016 2,679 322 16 Total $ 477,187 $ 946,039 $ 21,285 Consumer A discussion of the credit quality indicators that impact each type of collateral securing Consumer loans is included below: Revolving line Consumer Revolving lines of credit are secured by consumer assets other than real estate. The primary risk associated with this collateral is related to market volatility and the value of the underlying financial assets. Auto Direct consumer auto loans are secured by new and used consumer vehicles. The primary risk with this collateral class is the rate at which the collateral depreciates. Other This category includes Other consumer loans made to an individual. The primary risk for this category is for those loans where the loan is unsecured. This collateral type also includes other unsecured lending such as consumer overdrafts. A borrower is considered non-performing if the Company has ceased the recognition of interest and the loan is placed on non-accrual. Charge-offs and borrower performance are tracked on a loan origination vintage basis. Certain vintages, based on their maturation cycle, could be at higher risk due to collateral-based risk factors. The following table provides a summary of the amortized cost balance by collateral type and risk rating as of March 31, 2020 (in thousands ): March 31, 2020 Risk Revolving line Auto Other Performing $ 85,888 $ 28,744 $ 31,905 Nonperforming: 2020 — — — 2019 — 55 — 2018 — — — 2017 124 — 4 2016 — — — Prior to 2016 — 1 — Total $ 86,012 $ 28,800 $ 31,909 Credit cards A discussion of the credit quality indicators that impact Credit card loans is included below: Consumer Consumer credit card loans are revolving loans made to individuals. The primary risk associated with this collateral class is credit card debt is generally unsecured; therefore, repayment depends primarily on a borrower’s willingness and capacity to repay. The highly competitive environment for credit card lending provides consumers with ample opportunity to hold several credit cards from different issuers and to pay only minimum monthly payments on outstanding balances. In such an environment, borrowers may become over-extended and unable to repay, particularly in times of an economic downturn or a personal catastrophic event. The consumer credit card portfolio is segmented by borrower payment activity. Transactors are defined as accounts that pay off their balance by the end of each statement cycle. Revolvers are defined as an account that carries a balance from statement cycle to the next. These accounts incur monthly finance charges, and, sometimes, late fees. Revolvers are inherently higher risk and are tracked by FICO score. Commercial Commercial credit card loans are revolving loans made to small and commercial businesses. The primary risk associated with this collateral class is credit card debt is generally unsecured; therefore, repayment depends primarily on a borrower’s willingness and capacity to repay. Borrowers may become over-extended and unable to repay, particularly in times of an economic downturn or a catastrophic event. The commercial credit card portfolio is segmented by current and past due payment status. A borrower is past due after 30 days. In general, commercial credit card customers do not have incentive to hold a balance resulting in paying interest on credit card debt as commercial customers will typically have other debt obligations with lower interest rates in which they can utilize for capital. The following table provides a summary of the amortized cost balance of consumer credit cards by risk rating as of March 31, 2020 (in thousands): March 31, 2020 Risk Consumer Transactor accounts $ 48,428 Revolver accounts (by FICO score): Less than 600 9,795 600-619 3,642 620-639 6,569 640-659 11,654 660-679 19,194 680-699 20,566 700-719 19,869 720-739 18,228 740-759 14,799 760-779 9,994 780-799 7,894 800-819 5,590 820-839 4,558 840+ 2,538 Total $ 203,318 The following table provides a summary of the amortized cost balance of commercial credit cards by risk rating as of March 31, 2020 (in thousands): March 31, 2020 Risk Commercial Current $ 157,772 Past Due 12,517 Total $ 170,289 Leases and other A discussion of the credit quality indicators that impact each type of collateral securing Leases and other loans

Securities

Securities	3 Months Ended
	Mar. 31, 2020
Investments Debt And Equity Securities [Abstract]
Securities	5. Securities Securities Available for Sale This table provides detailed information about securities available for sale at March 31, 2020 and December 31, 2019 (in thousands): March 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury $ 30,549 $ 1,056 $ — $ 31,605 U.S. Agencies 94,195 6,421 — 100,616 Mortgage-backed 4,067,786 171,441 (4,578 ) 4,234,649 State and political subdivisions 2,980,676 114,292 (1,276 ) 3,093,692 Corporates 179,974 1,368 (2,453 ) 178,889 Total $ 7,353,180 $ 294,578 $ (8,307 ) $ 7,639,451 December 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury $ 63,835 $ 408 $ (165 ) $ 64,078 U.S. Agencies 89,867 3,154 — 93,021 Mortgage-backed 4,030,688 58,184 (17,078 ) 4,071,794 State and political subdivisions 2,954,276 78,867 (3,226 ) 3,029,917 Corporates 185,314 3,259 (21 ) 188,552 Total $ 7,323,980 $ 143,872 $ (20,490 ) $ 7,447,362 The following table presents contractual maturity information for securities available for sale at March 31, 2020 (in thousands): Amortized Fair Cost Value Due in 1 year or less $ 225,943 $ 226,438 Due after 1 year through 5 years 842,108 852,880 Due after 5 years through 10 years 580,312 594,772 Due after 10 years 1,637,031 1,730,712 Total 3,285,394 3,404,802 Mortgage-backed securities 4,067,786 4,234,649 Total securities available for sale $ 7,353,180 $ 7,639,451 Securities may be disposed of before contractual maturities due to sales by the Company or because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. For the three months ended March 31, 2020, proceeds from the sales of securities available for sale were $84.4 million compared to $53.3 million for the same period in 2019. Securities transactions resulted in gross realized gains of $1.2 million and $809 thousand for the three months ended March 31, 2020 and 2019, respectively. There were no gross realized losses for either the three months ended March 31, 2020 or 2019. Securities available for sale with a fair value of $6.0 billion at March 31, 2020 and $5.8 billion at December 31, 2019 were pledged to secure U.S. Government deposits, other public deposits, certain trust deposits, derivative transactions, and repurchase agreements. Of these amounts, securities with a market value of $979.2 million and $481.2 million at March 31, 2020 and Accrued interest on securities available for sale totaled $32.5 million as of March 31, 2020 and is included in the Accrued income line on the Company’s Consolidated Balance Sheets. The total amount of accrued interest is excluded from the amortized cost of available for sale securities presented above. Further, the Company has elected not to measure an ACL for accrued interest receivable. The following table shows the Company’s available for sale investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2020 and December 31, 2019 (in thousands): Less than 12 months 12 months or more Total March 31, 2020 Count Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count Fair Value Unrealized Losses Description of Securities U.S. Treasury — $ — $ — — $ — $ — — $ — $ — U.S. Agencies 1 4,406 — — — — 1 4,406 — Mortgage-backed 36 159,593 (4,079 ) 10 34,227 (499 ) 46 193,820 (4,578 ) State and political subdivisions 184 127,235 (1,267 ) 4 1,158 (9 ) 188 128,393 (1,276 ) Corporates 63 96,594 (2,453 ) — — — 63 96,594 (2,453 ) Total 284 $ 387,828 $ (7,799 ) 14 $ 35,385 $ (508 ) 298 $ 423,213 $ (8,307 ) Less than 12 months 12 months or more Total December 31, 2019 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Description of Securities U.S. Treasury $ — $ — $ 19,863 $ (165 ) $ 19,863 $ (165 ) U.S. Agencies — — — — — — Mortgage-backed 947,415 (5,236 ) 517,824 (11,842 ) 1,465,239 (17,078 ) State and political subdivisions 361,440 (3,084 ) 27,501 (142 ) 388,941 (3,226 ) Corporates 13,685 (21 ) — — 13,685 (21 ) Total $ 1,322,540 $ (8,341 ) $ 565,188 $ (12,149 ) $ 1,887,728 $ (20,490 ) The unrealized losses in the Company’s investments in U.S. Treasury securities, U.S. Agency securities, Government Sponsored Entity (GSE) mortgage-backed securities, State and political subdivisions, and Corporates were caused by changes in interest rates, and not from a decline in credit of the underlying issuers. The U.S. Treasury, U.S. Agency, and GSE mortgage-backed securities are all considered to be agency-backed securities with no risk of loss as they are either explicitly or implicitly guaranteed by the U.S. government. The changes in fair value in the agency-backed portfolios are solely driven by change in interest rates caused by changing economic conditions. The Company has no knowledge of any underlying credit issues and the cash flows underlying the debt securities have not changed and are not expected to be impacted by changes in interest rates. For the State and political subdivision portfolio, the majority of the Company’s holdings are in general obligation bonds, which have a very low historical default rate due to issuers generally having unlimited taxing authority to service the debt. For both the State and political subdivision and Corporate portfolios, the Company has a robust process for monitoring credit risk, including both pre-purchase and ongoing post-purchase credit reviews and analysis. The Company monitors credit ratings of all bond issuers in these segments and reviews available financial data, including market and sector trends. As of March 31, 2020, the Company does not believe the decline in value in these portfolios is related to credit impairments and instead is due to declining interest rates. The Company does not have the intent to sell these securities and does not believe it is more likely than not that the Company will be required to sell these securities before a recovery of amortized cost. As of March 31, 2020, there is no ACL related to the Company’s AFS securities as the decline in fair value did not result from credit issues. Securities Held to Maturity The following table shows the Company’s held to maturity investments’ amortized cost, fair value, and gross unrealized gains and losses at March 31, 2020 and December 31, 2019, respectively (in thousands): Gross Gross Amortized Unrealized Unrealized Fair March 31, 2020 Cost Gains Losses Value State and political subdivisions: Due in 1 year or less $ 14,151 $ 20 $ — $ 14,171 Due after 1 year through 5 years 93,532 2,785 (135 ) 96,182 Due after 5 years through 10 years 414,223 11,534 (760 ) 424,997 Due after 10 years 592,254 22,230 (2,925 ) 611,559 Total state and political subdivisions $ 1,114,160 $ 36,569 $ (3,820 ) $ 1,146,909 Allowance for credit losses (3,235 ) Total state and political subdivisions, net of allowance for credit losses $ 1,110,925 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2019 Cost Gains Losses Value State and political subdivisions: Due in 1 year or less $ 15,323 $ 5 $ (60 ) $ 15,268 Due after 1 year through 5 years 100,623 374 (699 ) 100,298 Due after 5 years through 10 years 394,591 389 (8,400 ) 386,580 Due after 10 years 605,565 494 (25,860 ) 580,199 Total state and political subdivisions $ 1,116,102 $ 1,262 $ (35,019 ) $ 1,082,345 Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. There were no sales of securities held to maturity during the three months ended March 31, 2020 or 2019. The following table shows the Company’s held to maturity investments’ gross unrealized losses and fair value, aggregated by length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2020 and December 31, 2019, respectively (in thousands): Less than 12 months 12 months or more Total March 31, 2020 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses State and political subdivisions $ 20,357 $ (384 ) $ 113,935 $ (3,436 ) $ 134,292 $ (3,820 ) Total $ 20,357 $ (384 ) $ 113,935 $ (3,436 ) $ 134,292 $ (3,820 ) Less than 12 months 12 months or more Total December 31, 2019 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses State and political subdivisions $ 471,544 $ (12,424 ) $ 546,572 $ (22,595 ) $ 1,018,116 $ (35,019 ) Total $ 471,544 $ (12,424 ) $ 546,572 $ (22,595 ) $ 1,018,116 $ (35,019 ) The unrealized losses in the Company’s held to maturity portfolio were caused by changes in the interest rate environment. The underlying bonds are evaluated for credit losses in conjunction with management’s estimate of the ACL based on credit rating. The following table shows the amortized cost basis by credit rating of the Company’s held to maturity investments at March 31, 2020 (in thousands): Amortized Cost Basis by Credit Rating - HTM Debt Securities March 31, 2020 AA A BBB BB B CCC-C Total State and political subdivisions: Competitive $ 8,998 $ 394,082 $ 597,984 $ 22,519 $ 685 $ 12,576 $ 1,036,844 Utilities — 57,349 19,967 — — — 77,316 Total state and political subdivisions $ 8,998 $ 451,431 $ 617,951 $ 22,519 $ 685 $ 12,576 $ 1,114,160 Competitive held-to-maturity securities include not-for-profit enterprises that provide an public functions such as housing, higher education or healthcare, but do so in a competitive environment. It also includes project financings that can have relatively high enterprise risk, such as deals backed by revenues from sports or convention facilities or start-up transportation ventures. Utilities are public enterprises providing essential services with a monopoly or near-monopoly over the service area. This includes environmental utilities (water, sewer, solid waste), power utilities (electric distribution and generation, gas), and transportation utilities (airports, parking, toll roads, mass transit, ports). All held to maturity securities were current and not past due at March 31, 2020. Accrued interest on securities held to maturity totaled $6.5 million as of March 31, 2020 and is included in the Accrued income line on the Company’s Consolidated Balance Sheets. The total amount of accrued interest is excluded from the amortized cost of available for sale securities presented above. Further, the Company has elected not to measure an ACL for accrued interest receivable. Trading Securities There were net unrealized gains on trading securities of $150 thousand and $52 thousand at March 31, 2020 and March 31, 2019, respectively. Net unrealized gains/losses are included in trading and investment banking income on the Company’s Consolidated Statements of Income. Securities sold not yet purchased totaled $17.6 million and $14.6 million at March 31, 2020 and December 31, 2019, respectively, and are classified within the Other liabilities line of the Company’s Consolidated Balance Sheets. Other Securities The table below provides detailed information for FRB stock and Federal Home Loan Bank (FHLB) stock and other securities at March 31, 2020 and December 31, 2019 (in thousands): Gross Gross Amortized Unrealized Unrealized Fair March 31, 2020 Cost Gains Losses Value FRB and FHLB stock $ 33,252 $ — $ — $ 33,252 Other securities – non-marketable 99,543 2,428 (29 ) 101,942 Total Other securities $ 132,795 $ 2,428 $ (29 ) $ 135,194 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2019 Cost Gains Losses Value FRB and FHLB stock $ 33,262 $ — $ — $ 33,262 Other securities – non-marketable 69,868 5,295 (5 ) 75,158 Total Other securities $ 103,130 $ 5,295 $ (5 ) $ 108,420 Investment in FRB stock is based on the capital structure of the investing bank, and investment in FHLB stock is mainly tied to the level of borrowings from the FHLB. These holdings are carried at cost. Other non-marketable securities include Prairie Capital Management (PCM) alternative investments in hedge funds and private equity funds, which are accounted for as equity-method investments. Also included in other non-marketable securities are equity investments which are held by a subsidiary qualified as a Small Business Investment Company, as well as investments in low-income housing partnerships within the areas the Company serves. The fair value of other non-marketable securities includes alternative investment securities of $5.6 million at March 31, 2020 and $7.0 million at December 31, 2019. Unrealized gains or losses on alternative investments are recognized in the Other noninterest income line on the Company’s Consolidated Statements of Income.

Goodwill and Other Intangibles

Goodwill and Other Intangibles	3 Months Ended
	Mar. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangibles	6. Goodwill and Other Intangibles Changes in the carrying amount of goodwill for the periods ended March 31, 2020 and December 31, 2019 by reportable segment are as follows (in thousands): Commercial Banking Institutional Banking Personal Banking Total Balances as of January 1, 2020 $ 59,419 $ 51,332 $ 70,116 $ 180,867 Balances as of March 31, 2020 $ 59,419 $ 51,332 $ 70,116 $ 180,867 Balances as of January 1, 2019 $ 59,419 $ 51,332 $ 70,116 $ 180,867 Balances as of December 31, 2019 $ 59,419 $ 51,332 $ 70,116 $ 180,867 The following table lists the finite-lived intangible assets that continue to be subject to amortization as of March 31, 2020 and December 31, 2019 (in thousands) As of March 31, 2020 Core Deposit Intangible Assets Customer Relationships Total Gross carrying amount $ 50,059 $ 89,928 $ 139,987 Accumulated amortization 47,607 66,541 114,148 Net carrying amount $ 2,452 $ 23,387 $ 25,839 As of December 31, 2019 Core Deposit Intangible Assets Customer Relationships Total Gross carrying amount $ 50,059 $ 89,952 $ 140,011 Accumulated amortization 47,140 65,274 112,414 Net carrying amount $ 2,919 $ 24,678 $ 27,597 During the year ended December 31, 2019, the Company acquired two corporate trust business with aggregate customer relationship intangibles of $18.1 million. During the three months ended March 31, 2020, the Company recorded a $24 thousand post-closing purchase adjustment related to one of these acquisitions. The following table has the aggregate amortization expense recognized in each period (in thousands) Three Months Ended March 31, 2020 2019 Aggregate amortization expense $ 1,734 $ 1,327 The following table lists estimated amortization expense of intangible assets in future periods (in thousands): For the nine months ending December 31, 2020 $ 4,678 For the year ending December 31, 2021 5,408 For the year ending December 31, 2022 4,468 For the year ending December 31, 2023 3,750 For the year ending December 31, 2024 2,965

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	3 Months Ended
	Mar. 31, 2020
Banking And Thrift [Abstract]
Securities Sold Under Agreements to Repurchase	7. Securities Sold Under Agreements to Repurchase The Company utilizes repurchase agreements to facilitate the needs of customers and to facilitate secured short-term funding needs. Repurchase agreements are stated at the amount of cash received in connection with the transaction. The Company monitors collateral levels on a continuous basis and may be required to provide additional collateral based on the fair value of the underlying securities. Securities pledged as collateral under repurchase agreements are maintained with the Company’s safekeeping agents. The table below presents the remaining contractual maturities of repurchase agreements outstanding at March 31, 2020 and December 31, 2019, in addition to the various types of marketable securities that have been pledged as collateral for these borrowings (in thousands): As of March 31, 2020 Remaining Contractual Maturities of the Agreements Overnight 30-90 Days Over 90 Days Total Repurchase agreements, secured by: U.S. Agencies $ 1,664,427 $ 202,930 $ 500 $ 1,867,857 Total repurchase agreements $ 1,664,427 $ 202,930 $ 500 $ 1,867,857 As of December 31, 2019 Remaining Contractual Maturities of the Agreements 2-29 Days 30-90 Days Total Repurchase agreements, secured by: U.S. Agencies $ 1,753,870 $ 110,765 $ 1,864,635 Total repurchase agreements $ 1,753,870 $ 110,765 $ 1,864,635

Business Segment Reporting

Business Segment Reporting	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Business Segment Reporting	8. Business Segment Reporting The Company has strategically aligned its operations into the following three reportable segments: Commercial Banking, Institutional Banking, and Personal Banking (collectively, the Business Segments, and each, a Business Segment). The Company’s senior executive officers regularly evaluate the Business Segment financial results produced by the Company’s internal reporting system in deciding how to allocate resources and assess performance for individual Business Segments. Prior to 2020, the Company had the following four Business Segments: Commercial Banking, Institutional Banking, Personal Banking, and Healthcare Services. In the first quarter of 2020, the Company merged the Healthcare Services segment into the Institutional Banking segment to better reflect how the core businesses, products and services are currently being evaluated by management. The Company’s Healthcare Services leadership structure and financial performance assessments are now included in the Institutional Banking segment, and accordingly, the reportable segments were realigned to reflect these changes. For comparability purposes, amounts in all periods are based on methodologies in effect at March 31, 2020. Previously reported results have been reclassified in this Form 10-Q to conform to the Company’s current organizational structure. The following summaries provide information about the activities of each Business Segment: Commercial Banking serves the commercial banking and treasury management needs of the small to middle-market businesses through a variety of products and services. Such services include commercial loans, commercial real estate financing, commercial credit cards, letters of credit, loan syndication services, and consultative services. In addition, our specialty lending group offers a variety of business solutions including asset-based lending, accounts receivable financing, mezzanine debt and minority equity investments. Treasury management services include depository services, account reconciliation and cash management tools such as, accounts payable and receivable solutions, electronic funds transfer and automated payments, controlled disbursements, lockbox services and remote deposit capture services. Institutional Banking is a combination of banking services, fund services, asset management services and healthcare services provided to institutional clients. This segment also provides fixed income sales, trading and underwriting, corporate trust and escrow services, as well as institutional custody. Institutional Banking includes UMB Fund Services, which provides fund administration and accounting, investor services and transfer agency, marketing and distribution, custody, and alternative investment services. Healthcare services provides healthcare payment solutions including custodial services for health savings accounts (HSAs) and private label, multipurpose debit cards to insurance carriers, third-party administrators, software companies, employers, and financial institutions. Personal Banking combines consumer banking and wealth management services offered to clients and delivered through personal relationships and the Company’s bank branches, ATM network and internet banking. Products offered include deposit accounts, retail credit cards, installment loans, home equity lines of credit, residential mortgages and small business loans. The range of client services extends from a basic checking account to estate planning and trust services and includes private banking, brokerage services, and insurance services in addition to a full spectrum of investment advisory, trust, and custody services. Business Segment Information Business Segment financial results for the three months ended March 31, 2020 and March 31, 2019 were as follows (in thousands): Three Months Ended March 31, 2020 Commercial Banking Institutional Banking Personal Banking Total Net interest income $ 106,948 $ 33,036 $ 33,957 $ 173,941 Provision for credit losses 82,220 275 5,505 88,000 Noninterest income 11,240 61,952 25,232 98,424 Noninterest expense 59,043 68,453 61,123 188,619 (Loss) income before taxes (23,075 ) 26,260 (7,439 ) (4,254 ) Income tax (benefit) expense (4,421 ) 5,032 (1,426 ) (815 ) Net (loss) income $ (18,654 ) $ 21,228 $ (6,013 ) $ (3,439 ) Average assets $ 11,609,000 $ 9,006,000 $ 5,425,000 $ 26,040,000 Three Months Ended March 31, 2019 Commercial Banking Institutional Banking Personal Banking Total Net interest income $ 99,814 $ 31,752 $ 32,302 $ 163,868 Provision for credit losses 10,329 286 1,735 12,350 Noninterest income 23,181 55,850 28,351 107,382 Noninterest expense 66,820 65,398 58,408 190,626 Income before taxes 45,846 21,918 510 68,274 Income tax expense 7,071 3,380 79 10,530 Net income $ 38,775 $ 18,538 $ 431 $ 57,744 Average assets $ 10,448,000 $ 7,013,000 $ 5,393,000 $ 22,854,000

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenue Recognition	9. Revenue Recognition The following is a description of the principal activities from which the Company generates revenue that are within the scope of ASC Topic 606, Revenue from Contracts with Customers Trust and securities processing – Trust and securities processing income consists of fees earned on personal and corporate trust accounts, custody of securities services, trust investments and wealth management services, and mutual fund and alternative asset servicing. The performance obligations related to this revenue include items such as performing full bond trustee service administration, investment advisory services, custody and record-keeping services, and fund administrative and accounting services. These fees are part of long-term contractual agreements and the performance obligations are satisfied upon completion of service and fees are generally a fixed flat monthly rate or based on a percentage of the account’s market value per the contract with the customer. These fees are primarily recorded within the Company’s Institutional and Personal Banking segments. Trading and investment banking – Trading and investment banking income consists of income earned related to the Company’s trading securities portfolio, including futures hedging, dividends, bond underwriting, and other securities incomes. The vast majority of this revenue is recognized in accordance with ASC 320, , and is out of the scope of ASC 606. A portion of trading and investment banking represents fees earned for management fees, commissions, and underwriting of corporate bond issuances. The performance obligations related to these fees include reviewing the credit worthiness of the customer, ensuring appropriate regulatory approval and participating in due diligence. The fees are fixed per the bond prospectus and the performance obligations are satisfied upon registration approval of the bonds by the applicable regulatory agencies. Revenue is recognized at the point in time upon completion of service and when approval is granted by the regulators. Service charges on deposits – Service charges on deposit accounts represent monthly analysis fees recognized for the services related to customer deposit accounts, including account maintenance and depository transactions processing fees. Commercial Banking and Institutional Banking depository accounts charge fees in accordance with the customer’s pricing schedule while Personal Banking account holders are generally charged a flat service fee per month. Deposit service charges for the healthcare accounts included in the Institutional Banking segment are priced according to either standard pricing schedules with individual account holders or according to service agreements between the Company and employer groups or third party administrators. The Company satisfies the performance obligation related to providing depository accounts monthly as transactions are processed and deposit service charge revenue is recorded monthly. These fees are recognized within all Business S egments. Insurance fees and commissions – Insurance fees and commissions includes all insurance-related fees earned, including commissions for individual life, variable life, group life, health, group health, fixed annuity, and variable annuity insurance contracts. The performance obligations related to these revenues primarily represent the placement of insurance policies with the insurance company partners. The fees are based on the contracts with insurance company partners and the performance obligations are satisfied when the terms of the policy have been agreed to and the insurance policy becomes effective. Brokerage fees – Brokerage fees represent income earned related to providing brokerage transaction services, including commissions on equity and commodity trades, and fees for investment management, advisory and administration. The performance obligations related to transaction services are executing the specified trade and are priced according to the customer’s fee schedule. Such income is recognized at a point in time as the trade occurs and the performance obligation is fulfilled. The performance obligations related to investment management, advisory and administration include allocating customer assets across a wide range of mutual funds and other investments, on-going account monitoring and re-balancing of the portfolio. These performance obligations are satisfied over time and the related revenue is calculated monthly based on the assets under management of each customer. All material performance obligations are satisfied as of the end of each accounting period. Bankcard fees – Bankcard fees primarily represent income earned from interchange revenue from MasterCard and Visa for the Company’s processing of debit, credit, HSA, and flexible spending account transactions. Additionally, the Company earns income and incentives related to various referrals of customers to card programs. The performance obligation for interchange revenue is the processing of each transaction through the Company’s access to the banking system. This performance obligation is completed for each individual transaction and income is recognized per transaction in accordance with interchange rates established by MasterCard and Visa. The performance obligations for various referral and incentive programs include either referring customers to certain card products or issuing exclusively branded cards for certain customer segments. The pricing of these incentive and referral programs are in accordance with the agreement with the individual card partner. These performance obligations are completed as the referrals are made or over a period of time when the Company is exclusively issuing branded cards. For the three months ended March 31, 2020 and March 31, 2019, the Company had approximately $8.4 million and $8.3 million of expense, respectively, recorded within the Bankcard fees line on the Company’s Consolidated Income Statements related to rebates and rewards programs that are outside of the scope of ASC 606. All material performance obligations are satisfied as of the end of each accounting period. Gains on sales of securities available for sale, net – In the regular course of business, the Company recognizes gains on the sale of available for sale securities. These gains are recognized in accordance with ASC 320, , and are outside of the scope of ASC 606. Other income – The Company recognizes other miscellaneous income through a variety of other revenue streams, the most material of which include letter of credit fees, certain loan origination fees, gains on the sale of assets, gains and losses on equity-method investments, derivative income, and bank-owned and company-owned life insurance income. These revenue streams are outside of the scope of ASC 606 and are recognized in accordance with the applicable U.S. GAAP. The remainder of Other income is primarily earned through transactions with personal banking customers, including wire transfer service charges, stop payment charges, and fees for items like money orders and cashier’s checks. The performance obligations of these types of fees are satisfied as transactions are completed and revenue is recognized upon transaction execution according to established fee schedules with the customers. The Company had no material contract assets, contract liabilities, or remaining performance obligations as of March 31, 2020. Total receivables from revenue recognized under the scope of ASC 606 were $55.6 million and $58.0 million as of March 31, 2020 and December 31, 2019, respectively. These receivables are included as part of the Other assets line on the Company’s Consolidated Balance Sheets. The following table depicts the disaggregation of revenue according to revenue stream and Business Segment for the three months ended March 31, 2020 and March 31, 2019. As stated in Note 8, “Business Segment Reporting,” for comparability purposes, amounts in all periods are based on methodologies in effect at March 31, 2020 and previously reported results have been reclassified in this Form 10-Q to conform to the Company’s current organizational structure. Disaggregated revenue is as follows (in thousands): Three Months Ended March 31, 2020 NONINTEREST INCOME Commercial Banking Institutional Banking Personal Banking Revenue (Expense) out of Scope of ASC 606 Total Trust and securities processing $ — $ 31,262 $ 15,738 $ — $ 47,000 Trading and investment banking — 656 — 1,067 1,723 Service charges on deposit accounts 6,892 15,607 2,539 43 25,081 Insurance fees and commissions — — 259 — 259 Brokerage fees 59 7,590 2,211 — 9,860 Bankcard fees 14,988 4,724 4,990 (8,157 ) 16,545 Gains on sales of securities available for sale, net — — — 1,227 1,227 Other 400 438 713 (4,822 ) (3,271 ) Total Noninterest income $ 22,339 $ 60,277 $ 26,450 $ (10,642 ) $ 98,424 Three Months Ended March 31, 2019 NONINTEREST INCOME Commercial Banking Institutional Banking Personal Banking Revenue (Expense) out of Scope of ASC 606 Total Trust and securities processing $ — $ 26,689 $ 15,268 $ — $ 41,957 Trading and investment banking — 128 — 5,453 5,581 Service charges on deposit accounts 7,461 11,077 2,708 35 21,281 Insurance fees and commissions — — 338 — 338 Brokerage fees 48 5,422 1,773 — 7,243 Bankcard fees 14,488 5,525 5,115 (8,061 ) 17,067 Gains on sales of securities available for sale, net — — — 809 809 Other 339 339 871 11,557 13,106 Total Noninterest income $ 22,336 $ 49,180 $ 26,073 $ 9,793 $ 107,382

Commitments, Contingencies and

Commitments, Contingencies and Guarantees	3 Months Ended
	Mar. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments, Contingencies and Guarantees	10. Commitments, Contingencies and Guarantees In the normal course of business, the Company is party to financial instruments with off-balance-sheet risk in order to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These financial instruments include commitments to extend credit, commercial letters of credit, standby letters of credit, forward foreign exchange contracts and spot foreign exchange contracts. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the Consolidated Balance Sheets. The contractual or notional amount of those instruments reflects the extent of involvement the Company has in particular classes of financial instruments. Many of the commitments expire without being drawn upon; therefore, the total amount of these commitments does not necessarily represent the future cash requirements of the Company. The Company’s exposure to credit loss in the event of nonperformance by the counterparty to the financial instruments for commitments to extend credit, commercial letters of credit, and standby letters of credit is represented by the contract or notional amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The following table summarizes the Company’s off-balance sheet financial instruments (in thousands): Contract or Notional Amount March 31, December 31, 2020 2019 Commitments to extend credit for loans (excluding credit card loans) $ 7,254,024 $ 7,409,338 Commitments to extend credit under credit card loans 3,285,687 3,188,905 Commercial letters of credit 5,320 4,460 Standby letters of credit 301,416 299,933 Forward contracts 218,750 58,287 Spot foreign exchange contracts 4,375 1,980 Allowance for Credit Losses on Off-Balance Sheet Credit Exposures The Company estimates expected credit losses over the contractual period in which the Company is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancelable by the Company. The ACL on off-balance sheet credit exposures is adjusted as a provision for off-balance sheet reserve located in Other expense within Noninterest expense in the Company’s Consolidated Statements of Income. The estimate includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over its estimated life. The estimate is based on expected utilization rates by portfolio segment. Utilization rates are influenced by historical trends and current conditions. The expected utilization rates are applied to the total commitment to determine the expected amount to be funded. The allowance for off-balance sheet credit exposure is calculated by applying portfolio segment expected credit loss rates to the expected amount to be funded. The following categories of off-balance sheet credit exposures have been identified: Revolving Lines of Credit: includes commercial, construction, agriculture, personal, and home-equity. Risks inherent to revolving lines of credit often are related to the susceptibility of an individual or business experiencing unpredictable cash flow or financial troubles, thus leading to payment default. During these financial troubles, the borrower could have less than desirable assets collateralizing the revolving line of credit. The financial strain the borrower is experiencing could lead to drawing against the line without the ability to pay the line down. Non-Revolving Lines of Credit: includes commercial and personal. Lines that do not carry a revolving feature are generally associated with a specific expenditure or project, such as to purchase equipment or the construction of real estate. The predominate risk associated with non-revolving lines is the diversion of funds for other expenditures. If funds get diverted, the contributory value to collateral suffers. Letters of Credit: incudes standby letters of credit. Generally, a standby letter of credit is established to provide assurance to the beneficiary that the applicant will perform certain obligations arising out of a separate transaction between the beneficiary and applicant. These obligations might be the performance of a service or delivery of a product. If the obligations are not met, it gives the beneficiary, the right to draw on the letter of credit. As of March 31, 2020, the ACL for off-balance sheet credit exposures was $3.0 million and was recorded in the Other liabilities line of the Company’s Consolidated Balance Sheets.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	3 Months Ended
	Mar. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	11. Derivatives and Hedging Activities Risk Management Objective of Using Derivatives The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s loans and borrowings. The Company also has interest rate derivatives that result from a service provided to certain qualifying customers and, therefore, are not used to manage interest rate risk of the Company’s assets or liabilities. The Company has entered into an offsetting position for each of these derivative instruments with a matching instrument from another financial institution in order to minimize its net risk exposure resulting from such transactions. Fair Values of Derivative Instruments on the Consolidated Balance Sheets The table below presents the fair value of the Company’s derivative financial instruments as of March 31, 2020 and December 31, 2019. The Company’s derivative assets and derivative liabilities are located within Other assets and Other liabilities, respectively, on the Company’s Consolidated Balance Sheets. Derivative fair values are determined using valuation techniques including discounted cash flow analysis on the expected cash flows from each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves, foreign exchange rates, and implied volatilities. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. This table provides a summary of the fair value of the Company’s derivative assets and liabilities as of March 31, 2020 and December 31, 2019 ( in thousands Derivative Assets Derivative Liabilities March 31, December 31, March 31, December 31, Fair Value 2020 2019 2020 2019 Interest Rate Products: Derivatives not designated as hedging instruments $ 112,603 $ 47,458 $ 10,435 $ 5,997 Derivatives designated as hedging instruments 32,744 7,818 2 — Total $ 145,347 $ 55,276 $ 10,437 $ 5,997 Fair Value Hedges of Interest Rate Risk The Company is exposed to changes in the fair value of certain of its fixed-rate assets and liabilities due to changes in the benchmark interest rate, London Interbank Offered Rate (LIBOR). Interest rate swaps designated as fair value hedges involve making fixed rate payments to a counterparty in exchange for the Company receiving variable rate payments over the life of the agreements without the exchange of the underlying notional amount. As of March 31, 2020 and December 31, 2019, the Company had one interest rate swap that was designated as a fair value hedge of interest rate risk associated with the Company’s fixed rate loan assets. This swap had a notional amount of $5.2 million and $5.3 million as of March 31, 2020 and December 31, 2019, respectively. For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in earnings. Cash Flow Hedges of Interest Rate Risk The Company’s objective in using interest rate derivatives is to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps and floors as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. As of March 31, 2020 and December 31, 2019, the Company had two interest rate swaps that were designated as cash flow hedges of interest rate risk associated with the Company’s variable-rate subordinated debentures issued by Marquette Capital Trusts III and IV. These swaps had an aggregate notional amount of $51.5 million at both March 31, 2020 and December 31, 2019. Interest rate floors designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates fall below the strike rate on the contract in exchange for an upfront premium. As of March 31, 2020 and December 31, 2019, the Company had one interest rate floor with a notional amount of $750.0 million that was designated as a cash flow hedge of interest rate risk. For derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in AOCI and is subsequently reclassified into interest expense and interest income in the period during which the hedged forecasted transaction affects earnings. Amounts reported in AOCI related to interest rate swap derivatives will be reclassified to Interest expense as interest payments are received or paid on the Company’s derivatives. Amounts reported in AOCI related to interest rate floor derivatives will be reclassified to Interest income as interest payments are received or paid on the Company’s derivatives. The Company expects to reclassify $1.2 million from AOCI to Interest expense and $4.0 million from AOCI to Interest income during the next 12 months. As of March 31, 2020, the Company is hedging its exposure to the variability in future cash flows for forecasted transactions over a maximum period of 16.47 years. Non-designated Hedges The remainder of the Company’s derivatives are not designated in qualifying hedging relationships. Derivatives not designated as hedges are not speculative and result from a service the Company provides to certain customers. The Company executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously offset by interest rate swaps that the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are recognized directly in earnings. As of March 31, 2020, the Company had 146 interest rate swaps with an aggregate notional amount of $2.0 billion related to this program. As of December 31, 2019, the Company had 142 interest rate swaps with an aggregate notional amount of $1.9 billion. Effect of Derivative Instruments on the Consolidated Statements of Income and Accumulated Other Comprehensive Income This table provides a summary of the amount of gain or loss recognized in Other noninterest expense in the Consolidated Statements of Income related to the Company’s derivative assets and liabilities for the three months ended March 31, 2020 and March 31, 2019 (in thousands) Amount of Gain (Loss) Recognized For the Three Months Ended March 31, March 31, 2020 2019 Interest Rate Products Derivatives not designated as hedging instruments $ (259 ) $ (873 ) Total $ (259 ) $ (873 ) Interest Rate Products Derivatives designated as hedging instruments: Fair value adjustments on derivatives $ (203 ) $ (58 ) Fair value adjustments on hedged items 202 59 Total $ (1 ) $ 1 This table provides a summary of the effect of hedges on AOCI in the Consolidated Statements of Comprehensive Income related to the Company’s derivative assets and liabilities for the three months ended March 31, 2020 and March 31, 2019 (in thousands) For the Three Months Ended March 31, 2020 Derivatives in Cash Flow Hedging Relationships Gain (Loss) Recognized in OCI on Derivative Gain (Loss) Recognized in OCI Included Component Loss Recognized in OCI Excluded Component Loss Reclassified from AOCI into Earnings Loss Reclassified from AOCI into Earnings Included Component Loss Reclassified from AOCI into Earnings Excluded Component Interest rate floor $ 24,934 $ 29,296 $ (4,362 ) $ (636 ) $ — $ (636 ) Interest rate swaps (10,409 ) (10,409 ) — (132 ) (132 ) — Total $ 14,525 $ 18,887 $ (4,362 ) $ (768 ) $ (132 ) $ (636 ) For the Three Months Ended March 31, 2019 Derivatives in Cash Flow Hedging Relationships Loss Recognized in OCI on Derivative Loss Recognized in OCI Included Component Loss Recognized in OCI Excluded Component Gain Reclassified from AOCI into Earnings Gain Reclassified from AOCI into Earnings Included Component Gain Reclassified from AOCI into Earnings Excluded Component Interest rate swaps $ (2,088 ) $ (2,088 ) $ — $ 5 $ 5 $ — Total $ (2,088 ) $ (2,088 ) $ — $ 5 $ 5 $ — Credit-risk-related Contingent Features The Company has agreements with certain of its derivative counterparties that contain a provision that if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations. As of March 31, 2020, the termination value of derivatives in a net liability position, which includes accrued interest, related to these agreements was $257 thousand. The Company has minimum collateral posting thresholds with certain of its derivative counterparties. At March 31, 2020, the Company had posted $373 thousand of collateral. If the Company had breached any of these provisions at March 31, 2020, it could have been required to settle its obligations under the agreements at the termination value.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	12. Fair Value Measurements The following table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis as of March 31, 2020, and December 31, 2019, and indicates the fair value hierarchy of the valuation techniques utilized by the Company to determine such fair value. Fair values determined by Level 1 inputs utilize quoted prices in active markets for identical assets and liabilities that the Company has the ability to access. Fair values determined by Level 2 inputs utilize inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices for similar assets or liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability, such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability. In certain cases, the inputs used to measure fair value may fall into different levels of the hierarchy. In such cases, the fair value is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Assets and liabilities measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 (in thousands): Fair Value Measurement at March 31, 2020 Description March 31, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets U.S. Agencies $ 3,477 $ — $ 3,477 $ — Mortgage-backed 5 — 5 — State and political subdivisions 35,259 — 35,259 — Corporates 5,243 5,243 — — Trading – other 17,193 17,193 — — Trading securities 61,177 22,436 38,741 — U.S. Treasury 31,605 31,605 — — U.S. Agencies 100,616 — 100,616 — Mortgage-backed 4,234,649 — 4,234,649 — State and political subdivisions 3,093,692 — 3,093,692 — Corporates 178,889 178,889 — — Available for sale securities 7,639,451 210,494 7,428,957 — Company-owned life insurance 47,726 — 47,726 — Bank-owned life insurance 282,562 — 282,562 — Derivatives 145,347 — 145,347 — Total $ 8,176,263 $ 232,930 $ 7,943,333 $ — Liabilities Derivatives $ 10,437 $ — $ 10,437 $ — Securities sold not yet purchased 17,631 — 17,631 — Total $ 28,068 $ — $ 28,068 $ — Fair Value Measurement at December 31, 2019 Description December 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets U.S. Agencies $ 1,246 $ — $ 1,246 $ — Mortgage-backed 392 — 392 — State and political subdivisions 21,764 — 21,764 — Corporates 5,649 5,649 — — Trading – other 16,567 16,567 — — Trading securities 45,618 22,216 23,402 — U.S. Treasury 64,078 64,078 — — U.S. Agencies 93,021 — 93,021 — Mortgage-backed 4,071,794 — 4,071,794 — State and political subdivisions 3,029,917 — 3,029,917 — Corporates 188,552 188,552 — — Available for sale securities 7,447,362 252,630 7,194,732 — Company-owned life insurance 63,900 — 63,900 — Bank-owned life insurance 280,709 — 280,709 — Derivatives 55,276 — 55,276 — Total $ 7,892,865 $ 274,846 $ 7,618,019 $ — Liabilities Derivatives $ 5,997 $ — $ 5,997 $ — Securities sold not yet purchased 14,599 — 14,599 — Total $ 20,596 $ — $ 20,596 $ — Valuation methods for instruments measured at fair value on a recurring basis The following methods and assumptions were used to estimate the fair value of each class of financial instruments measured on a recurring basis: Trading Securities Fair values for trading securities (including financial futures), are based on quoted market prices where available. If quoted market prices are not available, fair values are based on quoted market prices for similar securities. Securities Available for Sale Fair values are based on quoted market prices or dealer quotes, if available. If a quoted market price is not available, fair value is estimated using quoted market prices for similar securities. Prices are provided by third-party pricing services and are based on observable market inputs. On an annual basis, the Company compares a sample of these prices to other independent sources for the same securities. Additionally, throughout the year, if securities are sold, comparisons are made between the pricing services prices and the market prices at which the securities were sold. Variances are analyzed, and, if appropriate, additional research is conducted with the third-party pricing services. Based on this research, the pricing services may affirm or revise their quoted price. No significant adjustments have been made to the prices provided by the pricing services. The pricing services also provide documentation on an ongoing basis that includes reference data, inputs and methodology by asset class, which is reviewed to ensure that security placement within the fair value hierarchy is appropriate. Company-owned Life Insurance Fair value is equal to the cash surrender value of the life insurance policies. Bank-owned Life Insurance Fair value is equal to the cash surrender value of the life insurance policies. Derivatives Fair values are determined using valuation techniques including discounted cash flow analysis on the expected cash flows from each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves, foreign exchange rates, and implied volatilities. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. Securities sold not yet purchased Fair values are based on quoted market prices or dealer quotes, if available. If a quoted market price is not available, fair value is estimated using quoted market prices for similar securities. Prices are provided by third-party pricing services and are based on observable market inputs. Assets measured at fair value on a non-recurring basis as of March 31, 2020 and December 31, 2019 (in thousands): Fair Value Measurement at March 31, 2020 Using Description March 31, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Losses Recognized During the Three Months Ended March 31 Collateral dependent assets $ 21,587 $ — $ — $ 21,587 $ (6,607 ) Other real estate owned 3 — — 3 — Total $ 21,590 $ — $ — $ 21,590 $ (6,607 ) Fair Value Measurement at December 31, 2019 Using Description December 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Gains Recognized During the Twelve Months Ended December 31 Impaired loans $ 5,139 $ — $ — $ 5,139 $ 3,973 Other real estate owned 55 — — 55 7 Total $ 5,194 $ — $ — $ 5,194 $ 3,980 Valuation methods for instruments measured at fair value on a non-recurring basis The following methods and assumptions were used to estimate the fair value of each class of financial instruments measured on a non-recurring basis: Collateral Dependent Assets/Impaired loans With the adoption of CECL, collateral dependent assets are assets evaluated as part of the ACL on an individual basis. Those assets for which there is an associated allowance are considered financial assets measured at fair value on a non-recurring basis. Prior to the adoption of CECL, loans identified as impaired were considered financial assets measured at fair value on a non-recurring basis. The valuation method for collateral dependent assets and impaired loans is the same. Adjustments are recorded on certain assets to reflect write-downs that are based on the external appraised value of the underlying collateral. The external appraisals are generally based on recent sales of comparable properties which are then adjusted for the unique characteristics of the property being valued. In the case of non-real estate collateral, reliance is placed on a variety of sources, including external estimates of value and judgments based on the experience and expertise of internal specialists within the Company’s property management group and the Company’s credit department. The valuation of the collateral dependent assets and impaired loans are reviewed on a quarterly basis. Because many of these inputs are not observable, the measurements are classified as Level 3. Other real estate owned Other real estate owned consists of loan collateral which has been repossessed through foreclosure. This collateral is comprised of commercial and residential real estate and other non-real estate property, including auto, recreational and marine vehicles. Other real estate owned is recorded as held for sale initially at the fair value of the collateral less estimated selling costs . The initial valuation of the foreclosed property is obtained through an appraisal process similar to the process described in the impaired loans paragraph above. Subsequent to foreclosure, valuations are reviewed quarterly and updated periodically, and the assets may be marked down further, reflecting a new cost basis. Fair value measurements may be based upon appraisals, third-party price opinions, or internally developed pricing methods and those measurements are classified as Level 3. Fair value disclosures require disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. The estimated fair value of the Company’s financial instruments at March 31, 2020 and December 31, 2019 are as follows (in thousands): Fair Value Measurement at March 31, 2020 Using Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Estimated Fair Value FINANCIAL ASSETS Cash and short-term investments $ 2,234,557 $ 1,449,807 $ 784,750 $ 2,234,557 Securities available for sale 7,639,451 210,494 7,428,957 7,639,451 Securities held to maturity (exclusive of allowance for credit losses) 1,114,160 — 1,146,909 1,146,909 Trading securities 61,177 22,436 38,741 61,177 Other securities 135,194 — 135,194 135,194 Loans (exclusive of allowance for credit losses) 13,959,295 — 14,291,643 14,291,643 Derivatives 145,347 — 145,347 145,347 FINANCIAL LIABILITIES Demand and savings deposits 20,190,500 20,190,500 — 20,190,500 Time deposits 985,020 — 992,339 992,339 Other borrowings 1,905,917 23,060 1,882,857 1,905,917 Long-term debt 121,582 — 137,078 137,078 Derivatives 10,437 — 10,437 10,437 OFF-BALANCE SHEET ARRANGEMENTS Commitments to extend credit for loans 1,463 Commercial letters of credit 13 Standby letters of credit 956 Fair Value Measurement at December 31, 2019 Using Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Estimated Fair Value FINANCIAL ASSETS Cash and short-term investments $ 3,276,794 $ 1,701,449 $ 1,575,345 $ — $ 3,276,794 Securities available for sale 7,447,362 252,630 7,194,732 — 7,447,362 Securities held to maturity 1,116,102 — 1,082,345 — 1,082,345 Trading securities 45,618 22,216 23,402 — 45,618 Other securities 108,420 — 108,420 — 108,420 Loans (exclusive of allowance for loan loss) 13,439,525 — 13,601,595 — 13,601,595 Derivatives 55,276 — 55,276 — 55,276 FINANCIAL LIABILITIES Demand and savings deposits 20,376,880 20,376,880 — — 20,376,880 Time deposits 1,226,364 — 1,226,646 — 1,226,646 Other borrowings 1,896,508 31,873 1,864,635 — 1,896,508 Long-term debt 97,490 — 97,831 — 97,831 Derivatives 5,997 — 5,997 — 5,997 OFF-BALANCE SHEET ARRANGEMENTS Commitments to extend credit for loans 5,908 Commercial letters of credit 113 Standby letters of credit 2,966 Cash and short-term investments The carrying amounts of cash and due from banks, federal funds sold and resell agreements are reasonable estimates of their fair values. Securities held to maturity Fair value of held-to-maturity securities are estimated by discounting the future cash flows using current market rates. Other securities Amount consists of FRB and FHLB stock held by the Company, PCM equity-method investments, and other miscellaneous investments. The carrying amount of the FRB and FHLB stock equals its fair value because the shares can only be redeemed by the FRB and FHLB at their carrying amount. For PCM non-marketable equity-method investments, the Company’s proportionate share of the income or loss is recognized on a one-quarter lag based on the valuation of the underlying investment(s). Other non-marketable securities are carried at cost, which approximates fair value. Loans Fair values are estimated for portfolios with similar financial characteristics. Loans are segregated by type, such as commercial, real estate, consumer, and credit card. Each loan category is further segmented into fixed and variable interest rate categories. The fair value of loans are estimated by discounting the future cash flows. The discount rates used are estimated using comparable market rates for similar types of instruments adjusted to be commensurate with the credit risk, overhead costs, and optionality of such instruments. Demand and savings deposits The fair value of demand deposits and savings accounts was the amount payable on demand at March 31, 2020 and December 31, 2019. Time deposits The fair value of fixed-maturity certificates of deposit is estimated by discounting the future cash flows using the rates that are currently offered for deposits of similar remaining maturities. Other borrowings The carrying amounts of federal funds purchased, repurchase agreements and other short-term debt are reasonable estimates of their fair value because of the short-term nature of their maturities. Long-term debt Rates currently available to the Company for debt with similar terms and remaining maturities are used to estimate fair value of existing debt. Other off-balance sheet instruments The fair value of loan commitments and letters of credit are determined based on the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreement and the present creditworthiness of the counterparties. Neither the fees earned during the year on these instruments nor their fair value at period-end are significant to the Company’s consolidated financial position.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Nature Of Operations	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. These estimates and assumptions also impact reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. A summary of the significant accounting policies to assist the reader in understanding the financial presentation is provided in the Notes to Consolidated Financial Statements in the Form 10-K.
Cash and cash equivalents	Cash and cash equivalents Cash and cash equivalents includes Cash and due from banks and amounts due from the Federal Reserve Bank (FRB). Cash on hand, cash items in the process of collection, and amounts due from correspondent banks are included in Cash and due from banks. Amounts due from the FRB are interest-bearing for all periods presented and are included in the Interest-bearing due from banks line on the Company’s Consolidated Balance Sheets. This table provides a summary of cash and cash equivalents as presented on the Consolidated Statements of Cash Flows as of March 31, 2020 and March 31, 2019 (in thousands) March 31, 2020 2019 Due from the FRB $ 1,078,701 $ 1,090,771 Cash and due from banks 340,553 399,387 Cash and cash equivalents at end of period $ 1,419,254 $ 1,490,158 Also included in the Interest-bearing due from banks, but not considered cash and cash equivalents, are interest-bearing accounts held at other financial institutions, which totaled $30.6 million and $22.7 million at March 31, 2020 and March 31, 2019, respectively.
Per Share Data	Per Share Data Basic net (loss) income per share is computed based on the weighted average number of shares of common stock outstanding during each period. Basic and diluted net loss per share were the same at March 31, 2020 as the impact of all potentially dilutive shares was anti-dilutive. Diluted net income per share includes the dilutive effect of 286,418 shares issuable upon the exercise of stock options, nonvested restricted shares, and nonvested restricted stock units granted by the Company and outstanding at March 31, 2019. Certain options, restricted stock and restricted stock units issued under employee benefits plans are excluded from the computation of diluted earnings per share because they were anti-dilutive. At March 31, 2020, all outstanding options, restricted stock and restricted stock units were excluded. At March 31, 2019, 123,384 stock options were excluded.
Derivatives	Derivatives The Company records all derivatives on the Consolidated Balance Sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Currently, four of the Company’s derivatives are designated in qualifying hedging relationships. However, the remainder of the Company’s derivatives are not designated in qualifying hedging relationships, as the derivatives are not used to manage risks within the Company’s assets or liabilities. All changes in fair value of the Company’s non-designated derivatives and fair value hedges are recognized directly in earnings. Changes in fair value of the Company’s cash flow hedges are recognized in accumulated other comprehensive income (AOCI) and are reclassified to earnings when the hedged transaction affects earnings.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Summary of Cash and Cash Equivalents	This table provides a summary of cash and cash equivalents as presented on the Consolidated Statements of Cash Flows as of March 31, 2020 and March 31, 2019 (in thousands) March 31, 2020 2019 Due from the FRB $ 1,078,701 $ 1,090,771 Cash and due from banks 340,553 399,387 Cash and cash equivalents at end of period $ 1,419,254 $ 1,490,158

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Summary of Loan Classes and Aging of Past Due Loans	This table provides a summary of loan classes and an aging of past due loans at March 31, 2020 and December 31, 2019 (in thousands): March 31, 2020 30-89 Days Past Due and Accruing Greater than 90 Days Past Due and Accruing Non- Accrual Loans Total Past Due Current Total Loans Loans Commercial and industrial $ 8,663 $ 34 $ 42,613 $ 51,310 $ 5,901,054 $ 5,952,364 Specialty lending — — 1,455 1,455 521,970 523,425 Commercial real estate 7,180 115 46,379 53,674 5,230,113 5,283,787 Consumer real estate 1,282 154 5,521 6,957 1,437,554 1,444,511 Consumer 124 23 184 331 146,390 146,721 Credit cards 2,175 1,885 808 4,868 368,739 373,607 Leases and other — — 69 69 225,226 225,295 Total loans $ 19,424 $ 2,211 $ 97,029 $ 118,664 $ 13,831,046 $ 13,949,710 December 31, 2019 30-89 Days Past Due and Accruing Greater than 90 Days Past Due and Accruing Non- Accrual Loans Total Past Due Current Total Loans Loans Commercial: Commercial $ 10,491 $ 250 $ 25,592 $ 36,333 $ 5,805,669 $ 5,842,002 Asset-based — — — — 292,231 292,231 Factoring — — — — 170,560 170,560 Commercial – credit card 760 52 24 836 181,402 182,238 Real estate: Real estate – construction 3,933 — 95 4,028 838,318 842,346 Real estate – commercial 3,365 36 24,030 27,431 4,301,293 4,328,724 Real estate – residential 485 — 2,748 3,233 930,043 933,276 Real estate – HELOC 544 — 2,798 3,342 474,809 478,151 Consumer: Consumer – credit card 1,835 1,681 803 4,319 222,423 226,742 Consumer – other 81 50 257 388 133,086 133,474 Leases — — — — 1,978 1,978 Total loans $ 21,494 $ 2,069 $ 56,347 $ 79,910 $ 13,351,812 $ 13,431,722
Summary of Amortized Cost of Nonaccrual Loans with No Related Allowance	The following table provides the amortized cost of nonaccrual loans with no related allowance for credit losses by loan class at March 31, 2020 (in thousands): March 31, 2020 Non- Accrual Loans Amortized Cost of Non-Accrual Loans with no related Allowance Loans Commercial and industrial $ 42,613 $ 22,102 Specialty lending 1,455 1,011 Commercial real estate 46,379 38,495 Consumer real estate 5,521 5,521 Consumer 184 184 Credit cards 808 808 Leases and other 69 69 Total loans $ 97,029 $ 68,190
Summary of Amortized Cost Balance of Each of Loan Classes Disaggregated by Collateral Type and Origination Year	The following table provides a summary of the amortized cost balance of each of the Company’s loan classes disaggregated by collateral type and origination year as of March 31, 2020 (in thousands): March 31, 2020 Amortized Cost - Revolving Loans Amortized Cost - Revolving Loans Converted to Term Loans Loan Segment and Type Amortized Cost Basis by Origination Year - Term Loans 2020 2019 2018 2017 2016 Prior Total Commercial and industrial: Equipment/Accounts Receivable/Inventory $ 955,311 $ 1,012,606 $ 660,657 $ 267,071 $ 235,386 $ 186,903 $ 2,429,565 $ 10,701 $ 5,758,200 Agriculture 967 12,068 3,946 6,332 4,556 1,949 148,744 — 178,562 Overdrafts — — — — — — 15,602 — 15,602 Total Commercial and industrial 956,278 1,024,674 664,603 273,403 239,942 188,852 2,593,911 10,701 5,952,364 Specialty lending: Asset-based lending 8,503 61,289 — — — — 286,844 — 356,636 Factoring — — — — — — 166,789 — 166,789 Total Specialty lending 8,503 61,289 — — — — 453,633 — 523,425 Commercial real estate: Owner-occupied 89,443 426,334 300,415 237,437 175,338 290,695 30,328 17,368 1,567,358 Non-owner-occupied 111,865 566,992 288,939 267,792 263,488 279,534 69,403 73,130 1,921,143 Farmland 22,470 75,807 54,607 52,831 92,875 77,722 50,267 177 426,756 5+ Multi-family 7,257 110,450 48,822 91,199 119,504 11,714 1,770 — 390,716 1-4 Family construction — — — — — — 40,463 — 40,463 General construction 7,750 4,807 5,857 936 548 2,957 910,394 4,102 937,351 Total Commercial real estate 238,785 1,184,390 698,640 650,195 651,753 662,622 1,102,625 94,777 5,283,787 Consumer real estate: HELOC 17,606 23,227 13,430 454 86 2,916 419,468 — 477,187 First lien: 1-4 family 119,235 358,923 110,014 126,240 111,528 118,687 1,412 — 946,039 Junior lien: 1-4 family 2,298 9,308 3,559 2,267 1,201 2,361 291 — 21,285 Total Consumer real estate 139,139 391,458 127,003 128,961 112,815 123,964 421,171 — 1,444,511 Consumer: Revolving line — — — — — 85 85,927 — 86,012 Auto 4,314 13,670 5,117 3,110 1,553 1,036 — — 28,800 Other 1,245 8,509 3,156 638 1,271 355 16,735 — 31,909 Total Consumer 5,559 22,179 8,273 3,748 2,824 1,476 102,662 — 146,721 Credit cards: Consumer — — — — — — 203,318 — 203,318 Commercial — — — — — — 170,289 — 170,289 Total Credit cards — — — — — — 373,607 — 373,607 Leases and other: Leases — 557 — 833 — 769 — — 2,159 Other 586 12,693 9,470 3,444 2,414 5,889 188,640 — 223,136 Total Leases and other 586 13,250 9,470 4,277 2,414 6,658 188,640 — 225,295 Total loans $ 1,348,850 $ 2,697,240 $ 1,507,989 $ 1,060,584 $ 1,009,748 $ 983,572 $ 5,236,249 $ 105,478 $ 13,949,710
Summary of Amortized Cost Balance by Collateral Type and Risk Rating	The following table provides a summary of the amortized cost balance by collateral type and risk rating as of March 31, 2020 (in thousands): March 31, 2020 Amortized Cost - Revolving Loans Amortized Cost - Revolving Loans Converted to Term Loans Risk by Collateral Amortized Cost Basis by Origination Year - Term Loans 2020 2019 2018 2017 2016 Prior Total Equipment/Accounts Receivable/Inventory Non-watch list $ 889,106 $ 970,210 $ 608,207 $ 249,951 $ 198,513 $ 182,297 $ 2,231,968 $ 6,191 $ 5,336,443 Watch 28,487 17,722 40,462 6,142 25,592 3,224 82,337 — 203,966 Special Mention 97 408 2,366 2,251 9,240 624 27,778 3,990 46,754 Substandard 37,621 24,127 9,622 2,947 2,041 719 87,157 520 164,754 Doubtful — 139 — 5,780 — 39 325 — 6,283 Total Equipment/Accounts Receivable/Inventory $ 955,311 $ 1,012,606 $ 660,657 $ 267,071 $ 235,386 $ 186,903 $ 2,429,565 $ 10,701 $ 5,758,200 Agriculture Non-watch list $ 832 $ 10,113 $ 3,374 $ 2,991 $ 3,982 $ 1,769 $ 102,899 $ — $ 125,960 Watch 135 161 532 144 503 45 12,223 — 13,743 Special Mention — 475 22 163 22 — 3,285 — 3,967 Substandard — 1,319 18 3,034 49 135 30,337 — 34,892 Doubtful — — — — — — — — — Total Agriculture $ 967 $ 12,068 $ 3,946 $ 6,332 $ 4,556 $ 1,949 $ 148,744 $ — $ 178,562 The following table provides a summary of the amortized cost balance by collateral type and risk rating as of March 31, 2020 (in thousands): March 31, 2020 Risk Asset-based lending Factoring In-margin $ 350,487 $ 23,160 Out-of-margin 6,149 143,629 Total $ 356,636 $ 166,789 March 31, 2020 Amortized Cost - Revolving Loans Amortized Cost - Revolving Loans Converted to Term Loans Risk by Collateral Amortized Cost Basis by Origination Year - Term Loans 2020 2019 2018 2017 2016 Prior Total Owner-occupied Non-watch list $ 84,399 $ 418,347 $ 252,193 $ 203,728 $ 166,497 $ 281,410 $ 18,351 $ 17,368 $ 1,442,293 Watch — 6,398 35,581 — — 502 — — 42,481 Special Mention — 990 6,327 1,722 2,100 1,987 43 — 13,169 Substandard 5,044 599 6,314 31,987 6,102 6,796 11,934 — 68,776 Doubtful — — — — 639 — — — 639 Total Owner-occupied $ 89,443 $ 426,334 $ 300,415 $ 237,437 $ 175,338 $ 290,695 $ 30,328 $ 17,368 $ 1,567,358 Non-owner-occupied Non-watch list $ 111,681 $ 566,241 $ 288,939 $ 260,214 $ 260,735 $ 273,040 $ 69,403 $ 73,130 $ 1,903,383 Watch — 300 — 7,578 1,983 5,105 — — 14,966 Special Mention — — — — — 1,329 — — 1,329 Substandard 184 451 — — 770 60 — — 1,465 Doubtful — — — — — — — — — Total Non-owner-occupied $ 111,865 $ 566,992 $ 288,939 $ 267,792 $ 263,488 $ 279,534 $ 69,403 $ 73,130 $ 1,921,143 Farmland Non-watch list $ 20,730 $ 56,685 $ 31,484 $ 38,394 $ 65,139 $ 34,394 $ 27,597 $ 177 $ 274,600 Watch 123 3,727 15,251 6,299 5,294 26,809 19,193 — 76,696 Special Mention — — 1,220 510 1,462 507 205 — 3,904 Substandard 1,617 15,395 6,652 7,628 20,980 16,012 3,272 — 71,556 Doubtful — — — — — — — — — Total Farmland $ 22,470 $ 75,807 $ 54,607 $ 52,831 $ 92,875 $ 77,722 $ 50,267 $ 177 $ 426,756 5+ Multi-family Non-watch list $ 7,257 $ 107,990 $ 48,822 $ 89,850 $ 111,374 $ 11,714 $ 1,770 $ — $ 378,777 Watch — — — 1,349 — — — — 1,349 Special Mention — 2,460 — — 6,269 — — — 8,729 Substandard — — — — 1,861 — — — 1,861 Doubtful — — — — — — — — — Total 5+ Multi-family $ 7,257 $ 110,450 $ 48,822 $ 91,199 $ 119,504 $ 11,714 $ 1,770 $ — $ 390,716 1-4 Family construction Non-watch list $ — $ — $ — $ — $ — $ — $ 40,463 $ — $ 40,463 Watch — — — — — — — — — Special Mention — — — — — — — — — Substandard — — — — — — — — — Doubtful — — — — — — — — — Total 1-4 Family construction $ — $ — $ — $ — $ — $ — $ 40,463 $ — $ 40,463 General construction Non-watch list $ 6,828 $ 4,713 $ 5,689 $ 936 $ 548 $ 2,957 $ 907,000 $ 4,102 $ 932,773 Watch 617 — — — — — — — 617 Special Mention 305 — — — — — — — 305 Substandard — — 168 — — — 3,394 — 3,562 Doubtful — 94 — — — — — — 94 Total General construction $ 7,750 $ 4,807 $ 5,857 $ 936 $ 548 $ 2,957 $ 910,394 $ 4,102 $ 937,351 March 31, 2020 Risk HELOC First lien: 1-4 family Junior lien: 1-4 family Performing $ 473,836 $ 943,957 $ 21,196 Nonperforming: 2020 — — — 2019 190 138 — 2018 130 78 49 2017 208 1,072 — 2016 144 472 24 Prior to 2016 2,679 322 16 Total $ 477,187 $ 946,039 $ 21,285 March 31, 2020 Risk Revolving line Auto Other Performing $ 85,888 $ 28,744 $ 31,905 Nonperforming: 2020 — — — 2019 — 55 — 2018 — — — 2017 124 — 4 2016 — — — Prior to 2016 — 1 — Total $ 86,012 $ 28,800 $ 31,909 The following table provides a summary of the amortized cost balance of consumer credit cards by risk rating as of March 31, 2020 (in thousands): March 31, 2020 Risk Consumer Transactor accounts $ 48,428 Revolver accounts (by FICO score): Less than 600 9,795 600-619 3,642 620-639 6,569 640-659 11,654 660-679 19,194 680-699 20,566 700-719 19,869 720-739 18,228 740-759 14,799 760-779 9,994 780-799 7,894 800-819 5,590 820-839 4,558 840+ 2,538 Total $ 203,318 The following table provides a summary of the amortized cost balance of commercial credit cards by risk rating as of March 31, 2020 (in thousands): March 31, 2020 Risk Commercial Current $ 157,772 Past Due 12,517 Total $ 170,289 March 31, 2020 Risk Leases Other Non-watch list $ 2,159 $ 222,234 Watch — 700 Special Mention — — Substandard — 202 Doubtful — — Total $ 2,159 $ 223,136
Credit Risk Profile by Risk Rating and Based on Payment Activity	This table provides an analysis of the credit risk profile of each loan class at December 31, 2019 (in thousands) Credit Exposure Credit Risk Profile by Risk Rating December 31, 2019 Commercial Asset-based Factoring Real estate – construction Real estate – commercial Non-watch list $ 5,380,205 $ 230,526 $ 127,310 $ 837,836 $ 4,078,673 Watch 257,040 — — 175 110,530 Special Mention 91,020 34,640 1,376 307 28,020 Substandard 113,737 27,065 41,874 4,028 111,501 Total $ 5,842,002 $ 292,231 $ 170,560 $ 842,346 $ 4,328,724 Credit Exposure Credit Risk Profile Based on Payment Activity December 31, 2019 Commercial – credit card Real estate – residential Real estate – HELOC Consumer – credit card Consumer – other Leases Performing $ 182,214 $ 926,312 $ 468,228 $ 225,939 $ 132,414 $ 1,978 Non-performing 24 6,964 9,923 803 1,060 — Total $ 182,238 $ 933,276 $ 478,151 $ 226,742 $ 133,474 $ 1,978
Rollforward of Allowance for Credit/Loan Losses by Portfolio Segment	This table provides a rollforward of the allowance for credit losses by portfolio segment for the three months ended March 31, 2020 (in thousands): Three Months Ended March 31, 2020 Commercial and industrial Specialty lending Commercial real estate Consumer real estate Consumer Credit cards Leases and other Total - Loans HTM Total Allowance for credit losses: Beginning balance $ 63,313 $ 2,545 $ 15,951 $ 2,623 $ 543 $ 15,739 $ 1,074 $ 101,788 $ — $ 101,788 ASU 2016-13 adjustment 3,677 148 926 152 31 914 62 5,910 3,120 9,030 Charge-offs (1,315 ) — (6,062 ) (13 ) (248 ) (2,126 ) — (9,764 ) — (9,764 ) Recoveries 1,476 — 21 14 97 484 — 2,092 — 2,092 Provision 55,381 856 24,559 1,401 704 3,812 1,172 87,885 115 88,000 Ending balance $ 122,532 $ 3,549 $ 35,395 $ 4,177 $ 1,127 $ 18,823 $ 2,308 $ 187,911 $ 3,235 $ 191,146 This table provides a rollforward of the allowance for loan losses by portfolio segment for the three months ended March 31, 2019 (in thousands): Three Months Ended March 31, 2019 Commercial Real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 80,888 $ 13,664 $ 9,071 $ 12 $ 103,635 Charge-offs (11,163 ) (114 ) (2,467 ) — (13,744 ) Recoveries 626 73 721 — 1,420 Provision 9,981 767 1,603 (1 ) 12,350 Ending balance $ 80,332 $ 14,390 $ 8,928 $ 11 $ 103,661 Ending balance: individually evaluated for impairment $ 5,547 $ 101 $ — $ — $ 5,648 Ending balance: collectively evaluated for impairment 74,785 14,289 8,928 11 98,013 Loans: Ending balance: loans $ 6,261,244 $ 5,928,139 $ 355,538 $ 4,811 $ 12,549,732 Ending balance: individually evaluated for impairment 37,493 21,197 349 — 59,039 Ending balance: collectively evaluated for impairment 6,223,751 5,906,942 355,189 4,811 12,490,693
Summary of Amortized Cost Balance of Financial Assets Considered Collateral Dependent	This table provides the amortized cost balance of financial assets considered collateral dependent as of March 31, 2020 (in thousands) March 31, 2020 Loan Segment and Type Amortized Cost of Collateral Dependent Assets Related Allowance for Credit Losses Amortized Cost of Collateral Dependent Assets with no related Allowance Commercial and industrial: Equipment/Accounts Receivable/Inventory $ 34,636 $ 6,607 $ 14,125 Agriculture 7,977 — 7,977 Total Commercial and industrial 42,613 6,607 22,102 Specialty lending: Asset-based lending 907 — 907 Factoring 548 41 104 Total Specialty lending 1,455 41 1,011 Commercial real estate: Owner-occupied 32,561 21 27,389 Non-owner-occupied 1,221 — 1,221 Farmland 9,316 — 9,316 5+ Multi-family — — — 1-4 Family construction — — — General construction 3,489 595 777 Total Commercial real estate 46,587 616 38,703 Consumer real estate: HELOC 3,351 — 3,351 First lien: 1-4 family 2,082 — 2,082 Junior lien: 1-4 family 268 81 175 Total Consumer real estate 5,701 81 5,608 Consumer: Revolving line 124 — 124 Auto 56 — 56 Other 4 — 4 Total Consumer 184 — 184 Leases and other: Leases — — — Other 69 — 69 Total Leases and other 69 — 69 Total loans $ 96,609 $ 7,345 $ 67,677
Analysis of Impaired Loans	The following disclosure is presented under previously applicable GAAP. This table provides an analysis of impaired loans by class at December 31, 2019 (in thousands): As of December 31, 2019 Unpaid Principal Balance Recorded Investment with No Allowance Recorded Investment with Allowance Total Recorded Investment Related Allowance Average Recorded Investment Commercial: Commercial $ 32,301 $ 20,986 $ 856 $ 21,842 $ 271 $ 31,271 Asset-based 948 948 — 948 — 190 Factoring 2,979 2,979 — 2,979 — 3,917 Commercial – credit card — — — — — — Real estate: Real estate – construction 97 95 — 95 — 19 Real estate – commercial 28,258 19,314 4,928 24,242 387 19,826 Real estate – residential 1,751 1,617 93 1,710 80 846 Real estate – HELOC — — — — — — Consumer: Consumer – credit card — — — — — — Consumer – other — — — — — 70 Leases — — — — — — Total $ 66,334 $ 45,939 $ 5,877 $ 51,816 $ 738 $ 56,139

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2020
Securities Available for Sale	This table provides detailed information about securities available for sale at March 31, 2020 and December 31, 2019 (in thousands): March 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury $ 30,549 $ 1,056 $ — $ 31,605 U.S. Agencies 94,195 6,421 — 100,616 Mortgage-backed 4,067,786 171,441 (4,578 ) 4,234,649 State and political subdivisions 2,980,676 114,292 (1,276 ) 3,093,692 Corporates 179,974 1,368 (2,453 ) 178,889 Total $ 7,353,180 $ 294,578 $ (8,307 ) $ 7,639,451 December 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury $ 63,835 $ 408 $ (165 ) $ 64,078 U.S. Agencies 89,867 3,154 — 93,021 Mortgage-backed 4,030,688 58,184 (17,078 ) 4,071,794 State and political subdivisions 2,954,276 78,867 (3,226 ) 3,029,917 Corporates 185,314 3,259 (21 ) 188,552 Total $ 7,323,980 $ 143,872 $ (20,490 ) $ 7,447,362
Gross Unrealized Losses and Fair Value of Investment Securities Available for Sale	The following table shows the Company’s available for sale investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2020 and December 31, 2019 (in thousands): Less than 12 months 12 months or more Total March 31, 2020 Count Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count Fair Value Unrealized Losses Description of Securities U.S. Treasury — $ — $ — — $ — $ — — $ — $ — U.S. Agencies 1 4,406 — — — — 1 4,406 — Mortgage-backed 36 159,593 (4,079 ) 10 34,227 (499 ) 46 193,820 (4,578 ) State and political subdivisions 184 127,235 (1,267 ) 4 1,158 (9 ) 188 128,393 (1,276 ) Corporates 63 96,594 (2,453 ) — — — 63 96,594 (2,453 ) Total 284 $ 387,828 $ (7,799 ) 14 $ 35,385 $ (508 ) 298 $ 423,213 $ (8,307 ) Less than 12 months 12 months or more Total December 31, 2019 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Description of Securities U.S. Treasury $ — $ — $ 19,863 $ (165 ) $ 19,863 $ (165 ) U.S. Agencies — — — — — — Mortgage-backed 947,415 (5,236 ) 517,824 (11,842 ) 1,465,239 (17,078 ) State and political subdivisions 361,440 (3,084 ) 27,501 (142 ) 388,941 (3,226 ) Corporates 13,685 (21 ) — — 13,685 (21 ) Total $ 1,322,540 $ (8,341 ) $ 565,188 $ (12,149 ) $ 1,887,728 $ (20,490 )
Gross Unrealized Losses and Fair Value of Investment Securities Held to Maturity	The following table shows the Company’s held to maturity investments’ gross unrealized losses and fair value, aggregated by length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2020 and December 31, 2019, respectively (in thousands): Less than 12 months 12 months or more Total March 31, 2020 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses State and political subdivisions $ 20,357 $ (384 ) $ 113,935 $ (3,436 ) $ 134,292 $ (3,820 ) Total $ 20,357 $ (384 ) $ 113,935 $ (3,436 ) $ 134,292 $ (3,820 ) Less than 12 months 12 months or more Total December 31, 2019 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses State and political subdivisions $ 471,544 $ (12,424 ) $ 546,572 $ (22,595 ) $ 1,018,116 $ (35,019 ) Total $ 471,544 $ (12,424 ) $ 546,572 $ (22,595 ) $ 1,018,116 $ (35,019 )
Schedule of Amortized Cost Basis by Credit Rating of Held to Maturity Investment	The following table shows the amortized cost basis by credit rating of the Company’s held to maturity investments at March 31, 2020 (in thousands): Amortized Cost Basis by Credit Rating - HTM Debt Securities March 31, 2020 AA A BBB BB B CCC-C Total State and political subdivisions: Competitive $ 8,998 $ 394,082 $ 597,984 $ 22,519 $ 685 $ 12,576 $ 1,036,844 Utilities — 57,349 19,967 — — — 77,316 Total state and political subdivisions $ 8,998 $ 451,431 $ 617,951 $ 22,519 $ 685 $ 12,576 $ 1,114,160
Schedule of Federal Reserve Bank Stock and Federal Home Loan Bank Stock and Other Securities	The table below provides detailed information for FRB stock and Federal Home Loan Bank (FHLB) stock and other securities at March 31, 2020 and December 31, 2019 (in thousands): Gross Gross Amortized Unrealized Unrealized Fair March 31, 2020 Cost Gains Losses Value FRB and FHLB stock $ 33,252 $ — $ — $ 33,252 Other securities – non-marketable 99,543 2,428 (29 ) 101,942 Total Other securities $ 132,795 $ 2,428 $ (29 ) $ 135,194 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2019 Cost Gains Losses Value FRB and FHLB stock $ 33,262 $ — $ — $ 33,262 Other securities – non-marketable 69,868 5,295 (5 ) 75,158 Total Other securities $ 103,130 $ 5,295 $ (5 ) $ 108,420
Available-for-sale Securities [Member]
Contractual Maturity Information	The following table presents contractual maturity information for securities available for sale at March 31, 2020 (in thousands): Amortized Fair Cost Value Due in 1 year or less $ 225,943 $ 226,438 Due after 1 year through 5 years 842,108 852,880 Due after 5 years through 10 years 580,312 594,772 Due after 10 years 1,637,031 1,730,712 Total 3,285,394 3,404,802 Mortgage-backed securities 4,067,786 4,234,649 Total securities available for sale $ 7,353,180 $ 7,639,451
Held-to-maturity Securities [Member]
Contractual Maturity Information	The following table shows the Company’s held to maturity investments’ amortized cost, fair value, and gross unrealized gains and losses at March 31, 2020 and December 31, 2019, respectively (in thousands): Gross Gross Amortized Unrealized Unrealized Fair March 31, 2020 Cost Gains Losses Value State and political subdivisions: Due in 1 year or less $ 14,151 $ 20 $ — $ 14,171 Due after 1 year through 5 years 93,532 2,785 (135 ) 96,182 Due after 5 years through 10 years 414,223 11,534 (760 ) 424,997 Due after 10 years 592,254 22,230 (2,925 ) 611,559 Total state and political subdivisions $ 1,114,160 $ 36,569 $ (3,820 ) $ 1,146,909 Allowance for credit losses (3,235 ) Total state and political subdivisions, net of allowance for credit losses $ 1,110,925 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2019 Cost Gains Losses Value State and political subdivisions: Due in 1 year or less $ 15,323 $ 5 $ (60 ) $ 15,268 Due after 1 year through 5 years 100,623 374 (699 ) 100,298 Due after 5 years through 10 years 394,591 389 (8,400 ) 386,580 Due after 10 years 605,565 494 (25,860 ) 580,199 Total state and political subdivisions $ 1,116,102 $ 1,262 $ (35,019 ) $ 1,082,345

Goodwill and Other Intangibles

Goodwill and Other Intangibles (Tables)	3 Months Ended
	Mar. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	Changes in the carrying amount of goodwill for the periods ended March 31, 2020 and December 31, 2019 by reportable segment are as follows (in thousands): Commercial Banking Institutional Banking Personal Banking Total Balances as of January 1, 2020 $ 59,419 $ 51,332 $ 70,116 $ 180,867 Balances as of March 31, 2020 $ 59,419 $ 51,332 $ 70,116 $ 180,867 Balances as of January 1, 2019 $ 59,419 $ 51,332 $ 70,116 $ 180,867 Balances as of December 31, 2019 $ 59,419 $ 51,332 $ 70,116 $ 180,867
Changes in Intangible Assets	The following table lists the finite-lived intangible assets that continue to be subject to amortization as of March 31, 2020 and December 31, 2019 (in thousands) As of March 31, 2020 Core Deposit Intangible Assets Customer Relationships Total Gross carrying amount $ 50,059 $ 89,928 $ 139,987 Accumulated amortization 47,607 66,541 114,148 Net carrying amount $ 2,452 $ 23,387 $ 25,839 As of December 31, 2019 Core Deposit Intangible Assets Customer Relationships Total Gross carrying amount $ 50,059 $ 89,952 $ 140,011 Accumulated amortization 47,140 65,274 112,414 Net carrying amount $ 2,919 $ 24,678 $ 27,597
Aggregate Amortization Expense Recognized	The following table has the aggregate amortization expense recognized in each period (in thousands) Three Months Ended March 31, 2020 2019 Aggregate amortization expense $ 1,734 $ 1,327
Estimated Amortization Expense of Intangible Assets	The following table lists estimated amortization expense of intangible assets in future periods (in thousands): For the nine months ending December 31, 2020 $ 4,678 For the year ending December 31, 2021 5,408 For the year ending December 31, 2022 4,468 For the year ending December 31, 2023 3,750 For the year ending December 31, 2024 2,965

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	3 Months Ended
	Mar. 31, 2020
Repurchase Agreements
Remaining Contractual Maturities Of Repurchase Agreements	The table below presents the remaining contractual maturities of repurchase agreements outstanding at March 31, 2020 and December 31, 2019, in addition to the various types of marketable securities that have been pledged as collateral for these borrowings (in thousands): As of March 31, 2020 Remaining Contractual Maturities of the Agreements Overnight 30-90 Days Over 90 Days Total Repurchase agreements, secured by: U.S. Agencies $ 1,664,427 $ 202,930 $ 500 $ 1,867,857 Total repurchase agreements $ 1,664,427 $ 202,930 $ 500 $ 1,867,857 As of December 31, 2019 Remaining Contractual Maturities of the Agreements 2-29 Days 30-90 Days Total Repurchase agreements, secured by: U.S. Agencies $ 1,753,870 $ 110,765 $ 1,864,635 Total repurchase agreements $ 1,753,870 $ 110,765 $ 1,864,635

Business Segment Reporting (Tab

Business Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Schedule of Segment Financial Results	Business Segment financial results for the three months ended March 31, 2020 and March 31, 2019 were as follows (in thousands): Three Months Ended March 31, 2020 Commercial Banking Institutional Banking Personal Banking Total Net interest income $ 106,948 $ 33,036 $ 33,957 $ 173,941 Provision for credit losses 82,220 275 5,505 88,000 Noninterest income 11,240 61,952 25,232 98,424 Noninterest expense 59,043 68,453 61,123 188,619 (Loss) income before taxes (23,075 ) 26,260 (7,439 ) (4,254 ) Income tax (benefit) expense (4,421 ) 5,032 (1,426 ) (815 ) Net (loss) income $ (18,654 ) $ 21,228 $ (6,013 ) $ (3,439 ) Average assets $ 11,609,000 $ 9,006,000 $ 5,425,000 $ 26,040,000 Three Months Ended March 31, 2019 Commercial Banking Institutional Banking Personal Banking Total Net interest income $ 99,814 $ 31,752 $ 32,302 $ 163,868 Provision for credit losses 10,329 286 1,735 12,350 Noninterest income 23,181 55,850 28,351 107,382 Noninterest expense 66,820 65,398 58,408 190,626 Income before taxes 45,846 21,918 510 68,274 Income tax expense 7,071 3,380 79 10,530 Net income $ 38,775 $ 18,538 $ 431 $ 57,744 Average assets $ 10,448,000 $ 7,013,000 $ 5,393,000 $ 22,854,000

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue From Contract With Customer [Abstract]
Summary of Disaggregation of Revenue According to Revenue Stream and Business Segment	The following table depicts the disaggregation of revenue according to revenue stream and Business Segment for the three months ended March 31, 2020 and March 31, 2019. As stated in Note 8, “Business Segment Reporting,” for comparability purposes, amounts in all periods are based on methodologies in effect at March 31, 2020 and previously reported results have been reclassified in this Form 10-Q to conform to the Company’s current organizational structure. Disaggregated revenue is as follows (in thousands): Three Months Ended March 31, 2020 NONINTEREST INCOME Commercial Banking Institutional Banking Personal Banking Revenue (Expense) out of Scope of ASC 606 Total Trust and securities processing $ — $ 31,262 $ 15,738 $ — $ 47,000 Trading and investment banking — 656 — 1,067 1,723 Service charges on deposit accounts 6,892 15,607 2,539 43 25,081 Insurance fees and commissions — — 259 — 259 Brokerage fees 59 7,590 2,211 — 9,860 Bankcard fees 14,988 4,724 4,990 (8,157 ) 16,545 Gains on sales of securities available for sale, net — — — 1,227 1,227 Other 400 438 713 (4,822 ) (3,271 ) Total Noninterest income $ 22,339 $ 60,277 $ 26,450 $ (10,642 ) $ 98,424 Three Months Ended March 31, 2019 NONINTEREST INCOME Commercial Banking Institutional Banking Personal Banking Revenue (Expense) out of Scope of ASC 606 Total Trust and securities processing $ — $ 26,689 $ 15,268 $ — $ 41,957 Trading and investment banking — 128 — 5,453 5,581 Service charges on deposit accounts 7,461 11,077 2,708 35 21,281 Insurance fees and commissions — — 338 — 338 Brokerage fees 48 5,422 1,773 — 7,243 Bankcard fees 14,488 5,525 5,115 (8,061 ) 17,067 Gains on sales of securities available for sale, net — — — 809 809 Other 339 339 871 11,557 13,106 Total Noninterest income $ 22,336 $ 49,180 $ 26,073 $ 9,793 $ 107,382

Commitments, Contingencies an_2

Commitments, Contingencies and Guarantees (Tables)	3 Months Ended
	Mar. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Notional Amount of Off-Balance Sheet Financial Instruments	The following table summarizes the Company’s off-balance sheet financial instruments (in thousands): Contract or Notional Amount March 31, December 31, 2020 2019 Commitments to extend credit for loans (excluding credit card loans) $ 7,254,024 $ 7,409,338 Commitments to extend credit under credit card loans 3,285,687 3,188,905 Commercial letters of credit 5,320 4,460 Standby letters of credit 301,416 299,933 Forward contracts 218,750 58,287 Spot foreign exchange contracts 4,375 1,980

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Fair Value of Derivative Assets and Liabilities	This table provides a summary of the fair value of the Company’s derivative assets and liabilities as of March 31, 2020 and December 31, 2019 ( in thousands Derivative Assets Derivative Liabilities March 31, December 31, March 31, December 31, Fair Value 2020 2019 2020 2019 Interest Rate Products: Derivatives not designated as hedging instruments $ 112,603 $ 47,458 $ 10,435 $ 5,997 Derivatives designated as hedging instruments 32,744 7,818 2 — Total $ 145,347 $ 55,276 $ 10,437 $ 5,997
Summary of Amount of Gain (Loss) Recognized in Other Non-Interest Expense in Consolidated Statements of Income Related to Derivative Assets and Liabilities	This table provides a summary of the amount of gain or loss recognized in Other noninterest expense in the Consolidated Statements of Income related to the Company’s derivative assets and liabilities for the three months ended March 31, 2020 and March 31, 2019 (in thousands) Amount of Gain (Loss) Recognized For the Three Months Ended March 31, March 31, 2020 2019 Interest Rate Products Derivatives not designated as hedging instruments $ (259 ) $ (873 ) Total $ (259 ) $ (873 ) Interest Rate Products Derivatives designated as hedging instruments: Fair value adjustments on derivatives $ (203 ) $ (58 ) Fair value adjustments on hedged items 202 59 Total $ (1 ) $ 1
Summary of Effect of Hedges on AOCI in Consolidated Statements of Comprehensive Income Related to Company's Derivative Assets and Liabilities	This table provides a summary of the effect of hedges on AOCI in the Consolidated Statements of Comprehensive Income related to the Company’s derivative assets and liabilities for the three months ended March 31, 2020 and March 31, 2019 (in thousands) For the Three Months Ended March 31, 2020 Derivatives in Cash Flow Hedging Relationships Gain (Loss) Recognized in OCI on Derivative Gain (Loss) Recognized in OCI Included Component Loss Recognized in OCI Excluded Component Loss Reclassified from AOCI into Earnings Loss Reclassified from AOCI into Earnings Included Component Loss Reclassified from AOCI into Earnings Excluded Component Interest rate floor $ 24,934 $ 29,296 $ (4,362 ) $ (636 ) $ — $ (636 ) Interest rate swaps (10,409 ) (10,409 ) — (132 ) (132 ) — Total $ 14,525 $ 18,887 $ (4,362 ) $ (768 ) $ (132 ) $ (636 ) For the Three Months Ended March 31, 2019 Derivatives in Cash Flow Hedging Relationships Loss Recognized in OCI on Derivative Loss Recognized in OCI Included Component Loss Recognized in OCI Excluded Component Gain Reclassified from AOCI into Earnings Gain Reclassified from AOCI into Earnings Included Component Gain Reclassified from AOCI into Earnings Excluded Component Interest rate swaps $ (2,088 ) $ (2,088 ) $ — $ 5 $ 5 $ — Total $ (2,088 ) $ (2,088 ) $ — $ 5 $ 5 $ —

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 (in thousands): Fair Value Measurement at March 31, 2020 Description March 31, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets U.S. Agencies $ 3,477 $ — $ 3,477 $ — Mortgage-backed 5 — 5 — State and political subdivisions 35,259 — 35,259 — Corporates 5,243 5,243 — — Trading – other 17,193 17,193 — — Trading securities 61,177 22,436 38,741 — U.S. Treasury 31,605 31,605 — — U.S. Agencies 100,616 — 100,616 — Mortgage-backed 4,234,649 — 4,234,649 — State and political subdivisions 3,093,692 — 3,093,692 — Corporates 178,889 178,889 — — Available for sale securities 7,639,451 210,494 7,428,957 — Company-owned life insurance 47,726 — 47,726 — Bank-owned life insurance 282,562 — 282,562 — Derivatives 145,347 — 145,347 — Total $ 8,176,263 $ 232,930 $ 7,943,333 $ — Liabilities Derivatives $ 10,437 $ — $ 10,437 $ — Securities sold not yet purchased 17,631 — 17,631 — Total $ 28,068 $ — $ 28,068 $ — Fair Value Measurement at December 31, 2019 Description December 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets U.S. Agencies $ 1,246 $ — $ 1,246 $ — Mortgage-backed 392 — 392 — State and political subdivisions 21,764 — 21,764 — Corporates 5,649 5,649 — — Trading – other 16,567 16,567 — — Trading securities 45,618 22,216 23,402 — U.S. Treasury 64,078 64,078 — — U.S. Agencies 93,021 — 93,021 — Mortgage-backed 4,071,794 — 4,071,794 — State and political subdivisions 3,029,917 — 3,029,917 — Corporates 188,552 188,552 — — Available for sale securities 7,447,362 252,630 7,194,732 — Company-owned life insurance 63,900 — 63,900 — Bank-owned life insurance 280,709 — 280,709 — Derivatives 55,276 — 55,276 — Total $ 7,892,865 $ 274,846 $ 7,618,019 $ — Liabilities Derivatives $ 5,997 $ — $ 5,997 $ — Securities sold not yet purchased 14,599 — 14,599 — Total $ 20,596 $ — $ 20,596 $ —
Assets Measured at Fair Value on Non-Recurring Basis	Assets measured at fair value on a non-recurring basis as of March 31, 2020 and December 31, 2019 (in thousands): Fair Value Measurement at March 31, 2020 Using Description March 31, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Losses Recognized During the Three Months Ended March 31 Collateral dependent assets $ 21,587 $ — $ — $ 21,587 $ (6,607 ) Other real estate owned 3 — — 3 — Total $ 21,590 $ — $ — $ 21,590 $ (6,607 ) Fair Value Measurement at December 31, 2019 Using Description December 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Gains Recognized During the Twelve Months Ended December 31 Impaired loans $ 5,139 $ — $ — $ 5,139 $ 3,973 Other real estate owned 55 — — 55 7 Total $ 5,194 $ — $ — $ 5,194 $ 3,980
Estimated Fair Value of Financial Instruments	The estimated fair value of the Company’s financial instruments at March 31, 2020 and December 31, 2019 are as follows Fair Value Measurement at March 31, 2020 Using Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Estimated Fair Value FINANCIAL ASSETS Cash and short-term investments $ 2,234,557 $ 1,449,807 $ 784,750 $ 2,234,557 Securities available for sale 7,639,451 210,494 7,428,957 7,639,451 Securities held to maturity (exclusive of allowance for credit losses) 1,114,160 — 1,146,909 1,146,909 Trading securities 61,177 22,436 38,741 61,177 Other securities 135,194 — 135,194 135,194 Loans (exclusive of allowance for credit losses) 13,959,295 — 14,291,643 14,291,643 Derivatives 145,347 — 145,347 145,347 FINANCIAL LIABILITIES Demand and savings deposits 20,190,500 20,190,500 — 20,190,500 Time deposits 985,020 — 992,339 992,339 Other borrowings 1,905,917 23,060 1,882,857 1,905,917 Long-term debt 121,582 — 137,078 137,078 Derivatives 10,437 — 10,437 10,437 OFF-BALANCE SHEET ARRANGEMENTS Commitments to extend credit for loans 1,463 Commercial letters of credit 13 Standby letters of credit 956 Fair Value Measurement at December 31, 2019 Using Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Estimated Fair Value FINANCIAL ASSETS Cash and short-term investments $ 3,276,794 $ 1,701,449 $ 1,575,345 $ — $ 3,276,794 Securities available for sale 7,447,362 252,630 7,194,732 — 7,447,362 Securities held to maturity 1,116,102 — 1,082,345 — 1,082,345 Trading securities 45,618 22,216 23,402 — 45,618 Other securities 108,420 — 108,420 — 108,420 Loans (exclusive of allowance for loan loss) 13,439,525 — 13,601,595 — 13,601,595 Derivatives 55,276 — 55,276 — 55,276 FINANCIAL LIABILITIES Demand and savings deposits 20,376,880 20,376,880 — — 20,376,880 Time deposits 1,226,364 — 1,226,646 — 1,226,646 Other borrowings 1,896,508 31,873 1,864,635 — 1,896,508 Long-term debt 97,490 — 97,831 — 97,831 Derivatives 5,997 — 5,997 — 5,997 OFF-BALANCE SHEET ARRANGEMENTS Commitments to extend credit for loans 5,908 Commercial letters of credit 113 Standby letters of credit 2,966

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Summary of Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Accounting Policies [Abstract]
Due from the FRB	$ 1,078,701		$ 1,090,771
Cash and due from banks	340,553	$ 472,958	399,387
Cash and cash equivalents at end of period	$ 1,419,254		$ 1,490,158

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2020
Accounting Policies [Abstract]
Interest bearing amounts held at other financial institutions	$ 22.7	$ 30.6
Dilutive effect of common stock issuable upon exercise of options	286,418
Anti-dilutive shares	123,384

New Accounting Pronouncements -

New Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Jan. 01, 2019
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset			$ 58,200
Lease liability			$ 63,000
ASU Nos. 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment, increase in allowance for credit losses		$ 9,000
Reduction to retained earnings, net of deferred tax balances	[1]	$ 7,039
[1]	Related to the adoption of ASU No. 2016-13. See Note 3, “New Accounting Pronouncements,” for further detail.

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Summary of Loan Classes and Aging of Past Due Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 118,664	$ 79,910
Non- Accrual Loans	97,029	56,347
Current	13,831,046	13,351,812
Total Loans	13,949,710
Total Loans	13,949,710	13,431,722	$ 12,549,732
30-89 Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	19,424	21,494
Greater than 90 days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,211	2,069
Commercial and Industrial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	51,310
Non- Accrual Loans	42,613
Current	5,901,054
Total Loans	5,952,364
Commercial and Industrial Portfolio [Member] | 30-89 Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	8,663
Commercial and Industrial Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	34
Specialty Lending Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,455
Non- Accrual Loans	1,455
Current	521,970
Total Loans	523,425
Specialty Lending Portfolio [Member] | Asset-based [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	356,636
Specialty Lending Portfolio [Member] | Factoring [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	166,789
Commercial Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	53,674
Non- Accrual Loans	46,379
Current	5,230,113
Total Loans	5,283,787
Commercial Real Estate Portfolio [Member] | 30-89 Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	7,180
Commercial Real Estate Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	115
Consumer Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	6,957
Non- Accrual Loans	5,521
Current	1,437,554
Total Loans	1,444,511
Consumer Real Estate Portfolio [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	477,187
Consumer Real Estate Portfolio [Member] | 30-89 Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,282
Consumer Real Estate Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	154
Consumer Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	331
Non- Accrual Loans	184
Current	146,390
Total Loans	146,721
Total Loans			355,538
Consumer Portfolio [Member] | Consumer Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		4,319
Non- Accrual Loans		803
Current		222,423
Total Loans		226,742
Consumer Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		388
Non- Accrual Loans		257
Current		133,086
Total Loans		133,474
Consumer Portfolio [Member] | 30-89 Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	124
Consumer Portfolio [Member] | 30-89 Days Past Due and Accruing [Member] | Consumer Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		1,835
Consumer Portfolio [Member] | 30-89 Days Past Due and Accruing [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		81
Consumer Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	23
Consumer Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member] | Consumer Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		1,681
Consumer Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		50
Credit Cards Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	4,868
Non- Accrual Loans	808
Current	368,739
Total Loans	373,607
Credit Cards Portfolio [Member] | Commercial Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	12,517
Current	157,772
Total Loans	170,289
Credit Cards Portfolio [Member] | Consumer Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	203,318
Credit Cards Portfolio [Member] | 30-89 Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,175
Credit Cards Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,885
Leases and Other Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	69
Non- Accrual Loans	69
Current	225,226
Total Loans	225,295
Leases and Other Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 223,136
Commercial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans			6,261,244
Commercial Portfolio [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		36,333
Non- Accrual Loans		25,592
Current		5,805,669
Total Loans		5,842,002
Commercial Portfolio [Member] | Asset-based [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		292,231
Total Loans		292,231
Commercial Portfolio [Member] | Factoring [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		170,560
Total Loans		170,560
Commercial Portfolio [Member] | Commercial Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		836
Non- Accrual Loans		24
Current		181,402
Total Loans		182,238
Commercial Portfolio [Member] | 30-89 Days Past Due and Accruing [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		10,491
Commercial Portfolio [Member] | 30-89 Days Past Due and Accruing [Member] | Commercial Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		760
Commercial Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		250
Commercial Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member] | Commercial Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		52
Leases Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		1,978
Total Loans		1,978	4,811
Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans			$ 5,928,139
Real Estate Portfolio [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		4,028
Non- Accrual Loans		95
Current		838,318
Total Loans		842,346
Real Estate Portfolio [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		27,431
Non- Accrual Loans		24,030
Current		4,301,293
Total Loans		4,328,724
Real Estate Portfolio [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		3,233
Non- Accrual Loans		2,748
Current		930,043
Total Loans		933,276
Real Estate Portfolio [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		3,342
Non- Accrual Loans		2,798
Current		474,809
Total Loans		478,151
Real Estate Portfolio [Member] | 30-89 Days Past Due and Accruing [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		3,933
Real Estate Portfolio [Member] | 30-89 Days Past Due and Accruing [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		3,365
Real Estate Portfolio [Member] | 30-89 Days Past Due and Accruing [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		485
Real Estate Portfolio [Member] | 30-89 Days Past Due and Accruing [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		544
Real Estate Portfolio [Member] | Greater than 90 days Past Due and Accruing [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		$ 36

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Proceeds from sales of loans held for sale	$ 75,667,000	$ 21,258,000
Non- Accrual Loans	97,029,000		$ 56,347,000
Restructured loans	14,300,000		19,800,000
Total Past Due	118,664,000		79,910,000
Non accrual loans with no related allowance for credit losses	68,190,000
Accrued interest on loans	$ 44,100,000
Number of reasonable and supportable forecast period	1 year
Outstanding commitments to lend to borrowers with loan modifications classified as TDR's	$ 0	$ 0
Number of Contracts	0	0
Default payment of troubled restructuring, commercial real estate loan	$ 0	$ 0
Loan modifications not identified as TDR, due to effects of COVID-19	$ 7,000
Minimum [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of reasonable and supportable forecast period	1 year
Maximum [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of reasonable and supportable forecast period	3 years
Greater than 90 days Past Due and Accruing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Past Due	$ 2,211,000		$ 2,069,000
Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Proceeds from sales of loans held for sale	$ 75,700,000	$ 21,300,000

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Summary of Amortized Cost of Nonaccrual Loans with No Related Allowance (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable Nonaccrual Status [Line Items]
Non- Accrual Loans	$ 97,029	$ 56,347
Amortized Cost of Non-Accrual Loans with no related Allowance	68,190
Commercial and Industrial Portfolio [Member]
Financing Receivable Nonaccrual Status [Line Items]
Non- Accrual Loans	42,613
Amortized Cost of Non-Accrual Loans with no related Allowance	22,102
Specialty Lending Portfolio [Member]
Financing Receivable Nonaccrual Status [Line Items]
Non- Accrual Loans	1,455
Amortized Cost of Non-Accrual Loans with no related Allowance	1,011
Commercial Real Estate Portfolio [Member]
Financing Receivable Nonaccrual Status [Line Items]
Non- Accrual Loans	46,379
Amortized Cost of Non-Accrual Loans with no related Allowance	38,495
Consumer Real Estate Portfolio [Member]
Financing Receivable Nonaccrual Status [Line Items]
Non- Accrual Loans	5,521
Amortized Cost of Non-Accrual Loans with no related Allowance	5,521
Consumer Portfolio [Member]
Financing Receivable Nonaccrual Status [Line Items]
Non- Accrual Loans	184
Amortized Cost of Non-Accrual Loans with no related Allowance	184
Credit Cards Portfolio [Member]
Financing Receivable Nonaccrual Status [Line Items]
Non- Accrual Loans	808
Amortized Cost of Non-Accrual Loans with no related Allowance	808
Leases and Other Portfolio [Member]
Financing Receivable Nonaccrual Status [Line Items]
Non- Accrual Loans	69
Amortized Cost of Non-Accrual Loans with no related Allowance	$ 69

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Summary of Amortized Cost Balance of Each of Loan Classes Disaggregated by Collateral Type and Origination Year (Detail) $ in Thousands	Mar. 31, 2020USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	$ 1,348,850
Amortized Cost Basis by Origination Year 2019	2,697,240
Amortized Cost Basis by Origination Year 2018	1,507,989
Amortized Cost Basis by Origination Year 2017	1,060,584
Amortized Cost Basis by Origination Year 2016	1,009,748
Amortized Cost Basis by Origination Year Prior to 2016	983,572
Amortized Cost - Revolving Loans	5,236,249
Amortized Cost - Revolving Loans Converted to Term Loans	105,478
Total Loans	13,949,710
Commercial and Industrial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	956,278
Amortized Cost Basis by Origination Year 2019	1,024,674
Amortized Cost Basis by Origination Year 2018	664,603
Amortized Cost Basis by Origination Year 2017	273,403
Amortized Cost Basis by Origination Year 2016	239,942
Amortized Cost Basis by Origination Year Prior to 2016	188,852
Amortized Cost - Revolving Loans	2,593,911
Amortized Cost - Revolving Loans Converted to Term Loans	10,701
Total Loans	5,952,364
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	955,311
Amortized Cost Basis by Origination Year 2019	1,012,606
Amortized Cost Basis by Origination Year 2018	660,657
Amortized Cost Basis by Origination Year 2017	267,071
Amortized Cost Basis by Origination Year 2016	235,386
Amortized Cost Basis by Origination Year Prior to 2016	186,903
Amortized Cost - Revolving Loans	2,429,565
Amortized Cost - Revolving Loans Converted to Term Loans	10,701
Total Loans	5,758,200
Commercial and Industrial Portfolio [Member] | Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	967
Amortized Cost Basis by Origination Year 2019	12,068
Amortized Cost Basis by Origination Year 2018	3,946
Amortized Cost Basis by Origination Year 2017	6,332
Amortized Cost Basis by Origination Year 2016	4,556
Amortized Cost Basis by Origination Year Prior to 2016	1,949
Amortized Cost - Revolving Loans	148,744
Total Loans	178,562
Commercial and Industrial Portfolio [Member] | Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	15,602
Total Loans	15,602
Specialty Lending Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	8,503
Amortized Cost Basis by Origination Year 2019	61,289
Amortized Cost - Revolving Loans	453,633
Total Loans	523,425
Specialty Lending Portfolio [Member] | Asset-based Lending [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	8,503
Amortized Cost Basis by Origination Year 2019	61,289
Amortized Cost - Revolving Loans	286,844
Total Loans	356,636
Specialty Lending Portfolio [Member] | Factoring [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	166,789
Total Loans	166,789
Commercial Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	238,785
Amortized Cost Basis by Origination Year 2019	1,184,390
Amortized Cost Basis by Origination Year 2018	698,640
Amortized Cost Basis by Origination Year 2017	650,195
Amortized Cost Basis by Origination Year 2016	651,753
Amortized Cost Basis by Origination Year Prior to 2016	662,622
Amortized Cost - Revolving Loans	1,102,625
Amortized Cost - Revolving Loans Converted to Term Loans	94,777
Total Loans	5,283,787
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	89,443
Amortized Cost Basis by Origination Year 2019	426,334
Amortized Cost Basis by Origination Year 2018	300,415
Amortized Cost Basis by Origination Year 2017	237,437
Amortized Cost Basis by Origination Year 2016	175,338
Amortized Cost Basis by Origination Year Prior to 2016	290,695
Amortized Cost - Revolving Loans	30,328
Amortized Cost - Revolving Loans Converted to Term Loans	17,368
Total Loans	1,567,358
Commercial Real Estate Portfolio [Member] | Non-owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	111,865
Amortized Cost Basis by Origination Year 2019	566,992
Amortized Cost Basis by Origination Year 2018	288,939
Amortized Cost Basis by Origination Year 2017	267,792
Amortized Cost Basis by Origination Year 2016	263,488
Amortized Cost Basis by Origination Year Prior to 2016	279,534
Amortized Cost - Revolving Loans	69,403
Amortized Cost - Revolving Loans Converted to Term Loans	73,130
Total Loans	1,921,143
Commercial Real Estate Portfolio [Member] | Farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	22,470
Amortized Cost Basis by Origination Year 2019	75,807
Amortized Cost Basis by Origination Year 2018	54,607
Amortized Cost Basis by Origination Year 2017	52,831
Amortized Cost Basis by Origination Year 2016	92,875
Amortized Cost Basis by Origination Year Prior to 2016	77,722
Amortized Cost - Revolving Loans	50,267
Amortized Cost - Revolving Loans Converted to Term Loans	177
Total Loans	426,756
Commercial Real Estate Portfolio [Member] | 5+ Multi-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	7,257
Amortized Cost Basis by Origination Year 2019	110,450
Amortized Cost Basis by Origination Year 2018	48,822
Amortized Cost Basis by Origination Year 2017	91,199
Amortized Cost Basis by Origination Year 2016	119,504
Amortized Cost Basis by Origination Year Prior to 2016	11,714
Amortized Cost - Revolving Loans	1,770
Total Loans	390,716
Commercial Real Estate Portfolio [Member] | 1-4 Family Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	40,463
Total Loans	40,463
Commercial Real Estate Portfolio [Member] | General Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	7,750
Amortized Cost Basis by Origination Year 2019	4,807
Amortized Cost Basis by Origination Year 2018	5,857
Amortized Cost Basis by Origination Year 2017	936
Amortized Cost Basis by Origination Year 2016	548
Amortized Cost Basis by Origination Year Prior to 2016	2,957
Amortized Cost - Revolving Loans	910,394
Amortized Cost - Revolving Loans Converted to Term Loans	4,102
Total Loans	937,351
Consumer Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	139,139
Amortized Cost Basis by Origination Year 2019	391,458
Amortized Cost Basis by Origination Year 2018	127,003
Amortized Cost Basis by Origination Year 2017	128,961
Amortized Cost Basis by Origination Year 2016	112,815
Amortized Cost Basis by Origination Year Prior to 2016	123,964
Amortized Cost - Revolving Loans	421,171
Total Loans	1,444,511
Consumer Real Estate Portfolio [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	17,606
Amortized Cost Basis by Origination Year 2019	23,227
Amortized Cost Basis by Origination Year 2018	13,430
Amortized Cost Basis by Origination Year 2017	454
Amortized Cost Basis by Origination Year 2016	86
Amortized Cost Basis by Origination Year Prior to 2016	2,916
Amortized Cost - Revolving Loans	419,468
Total Loans	477,187
Consumer Real Estate Portfolio [Member] | First Lien: 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	119,235
Amortized Cost Basis by Origination Year 2019	358,923
Amortized Cost Basis by Origination Year 2018	110,014
Amortized Cost Basis by Origination Year 2017	126,240
Amortized Cost Basis by Origination Year 2016	111,528
Amortized Cost Basis by Origination Year Prior to 2016	118,687
Amortized Cost - Revolving Loans	1,412
Total Loans	946,039
Consumer Real Estate Portfolio [Member] | Junior Lien: 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	2,298
Amortized Cost Basis by Origination Year 2019	9,308
Amortized Cost Basis by Origination Year 2018	3,559
Amortized Cost Basis by Origination Year 2017	2,267
Amortized Cost Basis by Origination Year 2016	1,201
Amortized Cost Basis by Origination Year Prior to 2016	2,361
Amortized Cost - Revolving Loans	291
Total Loans	21,285
Consumer Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	5,559
Amortized Cost Basis by Origination Year 2019	22,179
Amortized Cost Basis by Origination Year 2018	8,273
Amortized Cost Basis by Origination Year 2017	3,748
Amortized Cost Basis by Origination Year 2016	2,824
Amortized Cost Basis by Origination Year Prior to 2016	1,476
Amortized Cost - Revolving Loans	102,662
Total Loans	146,721
Consumer Portfolio [Member] | Revolving Line [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year Prior to 2016	85
Amortized Cost - Revolving Loans	85,927
Total Loans	86,012
Consumer Portfolio [Member] | Auto [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	4,314
Amortized Cost Basis by Origination Year 2019	13,670
Amortized Cost Basis by Origination Year 2018	5,117
Amortized Cost Basis by Origination Year 2017	3,110
Amortized Cost Basis by Origination Year 2016	1,553
Amortized Cost Basis by Origination Year Prior to 2016	1,036
Total Loans	28,800
Consumer Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	1,245
Amortized Cost Basis by Origination Year 2019	8,509
Amortized Cost Basis by Origination Year 2018	3,156
Amortized Cost Basis by Origination Year 2017	638
Amortized Cost Basis by Origination Year 2016	1,271
Amortized Cost Basis by Origination Year Prior to 2016	355
Amortized Cost - Revolving Loans	16,735
Total Loans	31,909
Credit Cards Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	373,607
Total Loans	373,607
Credit Cards Portfolio [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	203,318
Total Loans	203,318
Credit Cards Portfolio [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	170,289
Total Loans	170,289
Leases and Other Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	586
Amortized Cost Basis by Origination Year 2019	13,250
Amortized Cost Basis by Origination Year 2018	9,470
Amortized Cost Basis by Origination Year 2017	4,277
Amortized Cost Basis by Origination Year 2016	2,414
Amortized Cost Basis by Origination Year Prior to 2016	6,658
Amortized Cost - Revolving Loans	188,640
Total Loans	225,295
Leases and Other Portfolio [Member] | Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	557
Amortized Cost Basis by Origination Year 2017	833
Amortized Cost Basis by Origination Year Prior to 2016	769
Total Loans	2,159
Leases and Other Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	586
Amortized Cost Basis by Origination Year 2019	12,693
Amortized Cost Basis by Origination Year 2018	9,470
Amortized Cost Basis by Origination Year 2017	3,444
Amortized Cost Basis by Origination Year 2016	2,414
Amortized Cost Basis by Origination Year Prior to 2016	5,889
Amortized Cost - Revolving Loans	188,640
Total Loans	$ 223,136

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses - Summary of Amortized Cost Balance by Collateral Type and Risk Rating (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	$ 1,348,850
Amortized Cost Basis by Origination Year 2019	2,697,240
Amortized Cost Basis by Origination Year 2018	1,507,989
Amortized Cost Basis by Origination Year 2017	1,060,584
Amortized Cost Basis by Origination Year 2016	1,009,748
Amortized Cost Basis by Origination Year Prior to 2016	983,572
Amortized Cost - Revolving Loans	5,236,249
Amortized Cost - Revolving Loans Converted to Term Loans	105,478
Total Loans	13,949,710
Current	13,831,046	$ 13,351,812
Total Past Due	118,664	79,910
Commercial and Industrial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	956,278
Amortized Cost Basis by Origination Year 2019	1,024,674
Amortized Cost Basis by Origination Year 2018	664,603
Amortized Cost Basis by Origination Year 2017	273,403
Amortized Cost Basis by Origination Year 2016	239,942
Amortized Cost Basis by Origination Year Prior to 2016	188,852
Amortized Cost - Revolving Loans	2,593,911
Amortized Cost - Revolving Loans Converted to Term Loans	10,701
Total Loans	5,952,364
Current	5,901,054
Total Past Due	51,310
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	955,311
Amortized Cost Basis by Origination Year 2019	1,012,606
Amortized Cost Basis by Origination Year 2018	660,657
Amortized Cost Basis by Origination Year 2017	267,071
Amortized Cost Basis by Origination Year 2016	235,386
Amortized Cost Basis by Origination Year Prior to 2016	186,903
Amortized Cost - Revolving Loans	2,429,565
Amortized Cost - Revolving Loans Converted to Term Loans	10,701
Total Loans	5,758,200
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	889,106
Amortized Cost Basis by Origination Year 2019	970,210
Amortized Cost Basis by Origination Year 2018	608,207
Amortized Cost Basis by Origination Year 2017	249,951
Amortized Cost Basis by Origination Year 2016	198,513
Amortized Cost Basis by Origination Year Prior to 2016	182,297
Amortized Cost - Revolving Loans	2,231,968
Amortized Cost - Revolving Loans Converted to Term Loans	6,191
Total Loans	5,336,443
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member] | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	28,487
Amortized Cost Basis by Origination Year 2019	17,722
Amortized Cost Basis by Origination Year 2018	40,462
Amortized Cost Basis by Origination Year 2017	6,142
Amortized Cost Basis by Origination Year 2016	25,592
Amortized Cost Basis by Origination Year Prior to 2016	3,224
Amortized Cost - Revolving Loans	82,337
Total Loans	203,966
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	97
Amortized Cost Basis by Origination Year 2019	408
Amortized Cost Basis by Origination Year 2018	2,366
Amortized Cost Basis by Origination Year 2017	2,251
Amortized Cost Basis by Origination Year 2016	9,240
Amortized Cost Basis by Origination Year Prior to 2016	624
Amortized Cost - Revolving Loans	27,778
Amortized Cost - Revolving Loans Converted to Term Loans	3,990
Total Loans	46,754
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	37,621
Amortized Cost Basis by Origination Year 2019	24,127
Amortized Cost Basis by Origination Year 2018	9,622
Amortized Cost Basis by Origination Year 2017	2,947
Amortized Cost Basis by Origination Year 2016	2,041
Amortized Cost Basis by Origination Year Prior to 2016	719
Amortized Cost - Revolving Loans	87,157
Amortized Cost - Revolving Loans Converted to Term Loans	520
Total Loans	164,754
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	139
Amortized Cost Basis by Origination Year 2017	5,780
Amortized Cost Basis by Origination Year Prior to 2016	39
Amortized Cost - Revolving Loans	325
Total Loans	6,283
Commercial and Industrial Portfolio [Member] | Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	967
Amortized Cost Basis by Origination Year 2019	12,068
Amortized Cost Basis by Origination Year 2018	3,946
Amortized Cost Basis by Origination Year 2017	6,332
Amortized Cost Basis by Origination Year 2016	4,556
Amortized Cost Basis by Origination Year Prior to 2016	1,949
Amortized Cost - Revolving Loans	148,744
Total Loans	178,562
Commercial and Industrial Portfolio [Member] | Agriculture [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	832
Amortized Cost Basis by Origination Year 2019	10,113
Amortized Cost Basis by Origination Year 2018	3,374
Amortized Cost Basis by Origination Year 2017	2,991
Amortized Cost Basis by Origination Year 2016	3,982
Amortized Cost Basis by Origination Year Prior to 2016	1,769
Amortized Cost - Revolving Loans	102,899
Total Loans	125,960
Commercial and Industrial Portfolio [Member] | Agriculture [Member] | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	135
Amortized Cost Basis by Origination Year 2019	161
Amortized Cost Basis by Origination Year 2018	532
Amortized Cost Basis by Origination Year 2017	144
Amortized Cost Basis by Origination Year 2016	503
Amortized Cost Basis by Origination Year Prior to 2016	45
Amortized Cost - Revolving Loans	12,223
Total Loans	13,743
Commercial and Industrial Portfolio [Member] | Agriculture [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	475
Amortized Cost Basis by Origination Year 2018	22
Amortized Cost Basis by Origination Year 2017	163
Amortized Cost Basis by Origination Year 2016	22
Amortized Cost - Revolving Loans	3,285
Total Loans	3,967
Commercial and Industrial Portfolio [Member] | Agriculture [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	1,319
Amortized Cost Basis by Origination Year 2018	18
Amortized Cost Basis by Origination Year 2017	3,034
Amortized Cost Basis by Origination Year 2016	49
Amortized Cost Basis by Origination Year Prior to 2016	135
Amortized Cost - Revolving Loans	30,337
Total Loans	34,892
Specialty Lending Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	8,503
Amortized Cost Basis by Origination Year 2019	61,289
Amortized Cost - Revolving Loans	453,633
Total Loans	523,425
Current	521,970
Total Past Due	1,455
Specialty Lending Portfolio [Member] | Asset-based Lending [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	8,503
Amortized Cost Basis by Origination Year 2019	61,289
Amortized Cost - Revolving Loans	286,844
Total Loans	356,636
Specialty Lending Portfolio [Member] | Asset-based Lending [Member] | In-margin [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	350,487
Specialty Lending Portfolio [Member] | Asset-based Lending [Member] | Out-of-margin [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	6,149
Specialty Lending Portfolio [Member] | Factoring [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	166,789
Total Loans	166,789
Specialty Lending Portfolio [Member] | Factoring [Member] | In-margin [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	23,160
Specialty Lending Portfolio [Member] | Factoring [Member] | Out-of-margin [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	143,629
Commercial Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	238,785
Amortized Cost Basis by Origination Year 2019	1,184,390
Amortized Cost Basis by Origination Year 2018	698,640
Amortized Cost Basis by Origination Year 2017	650,195
Amortized Cost Basis by Origination Year 2016	651,753
Amortized Cost Basis by Origination Year Prior to 2016	662,622
Amortized Cost - Revolving Loans	1,102,625
Amortized Cost - Revolving Loans Converted to Term Loans	94,777
Total Loans	5,283,787
Current	5,230,113
Total Past Due	53,674
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	89,443
Amortized Cost Basis by Origination Year 2019	426,334
Amortized Cost Basis by Origination Year 2018	300,415
Amortized Cost Basis by Origination Year 2017	237,437
Amortized Cost Basis by Origination Year 2016	175,338
Amortized Cost Basis by Origination Year Prior to 2016	290,695
Amortized Cost - Revolving Loans	30,328
Amortized Cost - Revolving Loans Converted to Term Loans	17,368
Total Loans	1,567,358
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	84,399
Amortized Cost Basis by Origination Year 2019	418,347
Amortized Cost Basis by Origination Year 2018	252,193
Amortized Cost Basis by Origination Year 2017	203,728
Amortized Cost Basis by Origination Year 2016	166,497
Amortized Cost Basis by Origination Year Prior to 2016	281,410
Amortized Cost - Revolving Loans	18,351
Amortized Cost - Revolving Loans Converted to Term Loans	17,368
Total Loans	1,442,293
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member] | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	6,398
Amortized Cost Basis by Origination Year 2018	35,581
Amortized Cost Basis by Origination Year Prior to 2016	502
Total Loans	42,481
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	990
Amortized Cost Basis by Origination Year 2018	6,327
Amortized Cost Basis by Origination Year 2017	1,722
Amortized Cost Basis by Origination Year 2016	2,100
Amortized Cost Basis by Origination Year Prior to 2016	1,987
Amortized Cost - Revolving Loans	43
Total Loans	13,169
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	5,044
Amortized Cost Basis by Origination Year 2019	599
Amortized Cost Basis by Origination Year 2018	6,314
Amortized Cost Basis by Origination Year 2017	31,987
Amortized Cost Basis by Origination Year 2016	6,102
Amortized Cost Basis by Origination Year Prior to 2016	6,796
Amortized Cost - Revolving Loans	11,934
Total Loans	68,776
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2016	639
Total Loans	639
Commercial Real Estate Portfolio [Member] | Non-owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	111,865
Amortized Cost Basis by Origination Year 2019	566,992
Amortized Cost Basis by Origination Year 2018	288,939
Amortized Cost Basis by Origination Year 2017	267,792
Amortized Cost Basis by Origination Year 2016	263,488
Amortized Cost Basis by Origination Year Prior to 2016	279,534
Amortized Cost - Revolving Loans	69,403
Amortized Cost - Revolving Loans Converted to Term Loans	73,130
Total Loans	1,921,143
Commercial Real Estate Portfolio [Member] | Non-owner-occupied [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	111,681
Amortized Cost Basis by Origination Year 2019	566,241
Amortized Cost Basis by Origination Year 2018	288,939
Amortized Cost Basis by Origination Year 2017	260,214
Amortized Cost Basis by Origination Year 2016	260,735
Amortized Cost Basis by Origination Year Prior to 2016	273,040
Amortized Cost - Revolving Loans	69,403
Amortized Cost - Revolving Loans Converted to Term Loans	73,130
Total Loans	1,903,383
Commercial Real Estate Portfolio [Member] | Non-owner-occupied [Member] | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	300
Amortized Cost Basis by Origination Year 2017	7,578
Amortized Cost Basis by Origination Year 2016	1,983
Amortized Cost Basis by Origination Year Prior to 2016	5,105
Total Loans	14,966
Commercial Real Estate Portfolio [Member] | Non-owner-occupied [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year Prior to 2016	1,329
Total Loans	1,329
Commercial Real Estate Portfolio [Member] | Non-owner-occupied [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	184
Amortized Cost Basis by Origination Year 2019	451
Amortized Cost Basis by Origination Year 2016	770
Amortized Cost Basis by Origination Year Prior to 2016	60
Total Loans	1,465
Commercial Real Estate Portfolio [Member] | Farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	22,470
Amortized Cost Basis by Origination Year 2019	75,807
Amortized Cost Basis by Origination Year 2018	54,607
Amortized Cost Basis by Origination Year 2017	52,831
Amortized Cost Basis by Origination Year 2016	92,875
Amortized Cost Basis by Origination Year Prior to 2016	77,722
Amortized Cost - Revolving Loans	50,267
Amortized Cost - Revolving Loans Converted to Term Loans	177
Total Loans	426,756
Commercial Real Estate Portfolio [Member] | Farmland [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	20,730
Amortized Cost Basis by Origination Year 2019	56,685
Amortized Cost Basis by Origination Year 2018	31,484
Amortized Cost Basis by Origination Year 2017	38,394
Amortized Cost Basis by Origination Year 2016	65,139
Amortized Cost Basis by Origination Year Prior to 2016	34,394
Amortized Cost - Revolving Loans	27,597
Amortized Cost - Revolving Loans Converted to Term Loans	177
Total Loans	274,600
Commercial Real Estate Portfolio [Member] | Farmland [Member] | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	123
Amortized Cost Basis by Origination Year 2019	3,727
Amortized Cost Basis by Origination Year 2018	15,251
Amortized Cost Basis by Origination Year 2017	6,299
Amortized Cost Basis by Origination Year 2016	5,294
Amortized Cost Basis by Origination Year Prior to 2016	26,809
Amortized Cost - Revolving Loans	19,193
Total Loans	76,696
Commercial Real Estate Portfolio [Member] | Farmland [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2018	1,220
Amortized Cost Basis by Origination Year 2017	510
Amortized Cost Basis by Origination Year 2016	1,462
Amortized Cost Basis by Origination Year Prior to 2016	507
Amortized Cost - Revolving Loans	205
Total Loans	3,904
Commercial Real Estate Portfolio [Member] | Farmland [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	1,617
Amortized Cost Basis by Origination Year 2019	15,395
Amortized Cost Basis by Origination Year 2018	6,652
Amortized Cost Basis by Origination Year 2017	7,628
Amortized Cost Basis by Origination Year 2016	20,980
Amortized Cost Basis by Origination Year Prior to 2016	16,012
Amortized Cost - Revolving Loans	3,272
Total Loans	71,556
Commercial Real Estate Portfolio [Member] | 5+ Multi-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	7,257
Amortized Cost Basis by Origination Year 2019	110,450
Amortized Cost Basis by Origination Year 2018	48,822
Amortized Cost Basis by Origination Year 2017	91,199
Amortized Cost Basis by Origination Year 2016	119,504
Amortized Cost Basis by Origination Year Prior to 2016	11,714
Amortized Cost - Revolving Loans	1,770
Total Loans	390,716
Commercial Real Estate Portfolio [Member] | 5+ Multi-family [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	7,257
Amortized Cost Basis by Origination Year 2019	107,990
Amortized Cost Basis by Origination Year 2018	48,822
Amortized Cost Basis by Origination Year 2017	89,850
Amortized Cost Basis by Origination Year 2016	111,374
Amortized Cost Basis by Origination Year Prior to 2016	11,714
Amortized Cost - Revolving Loans	1,770
Total Loans	378,777
Commercial Real Estate Portfolio [Member] | 5+ Multi-family [Member] | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2017	1,349
Total Loans	1,349
Commercial Real Estate Portfolio [Member] | 5+ Multi-family [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	2,460
Amortized Cost Basis by Origination Year 2016	6,269
Total Loans	8,729
Commercial Real Estate Portfolio [Member] | 5+ Multi-family [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2016	1,861
Total Loans	1,861
Commercial Real Estate Portfolio [Member] | 1-4 Family Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	40,463
Total Loans	40,463
Commercial Real Estate Portfolio [Member] | 1-4 Family Construction [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	40,463
Total Loans	40,463
Commercial Real Estate Portfolio [Member] | General Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	7,750
Amortized Cost Basis by Origination Year 2019	4,807
Amortized Cost Basis by Origination Year 2018	5,857
Amortized Cost Basis by Origination Year 2017	936
Amortized Cost Basis by Origination Year 2016	548
Amortized Cost Basis by Origination Year Prior to 2016	2,957
Amortized Cost - Revolving Loans	910,394
Amortized Cost - Revolving Loans Converted to Term Loans	4,102
Total Loans	937,351
Commercial Real Estate Portfolio [Member] | General Construction [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	6,828
Amortized Cost Basis by Origination Year 2019	4,713
Amortized Cost Basis by Origination Year 2018	5,689
Amortized Cost Basis by Origination Year 2017	936
Amortized Cost Basis by Origination Year 2016	548
Amortized Cost Basis by Origination Year Prior to 2016	2,957
Amortized Cost - Revolving Loans	907,000
Amortized Cost - Revolving Loans Converted to Term Loans	4,102
Total Loans	932,773
Commercial Real Estate Portfolio [Member] | General Construction [Member] | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	617
Total Loans	617
Commercial Real Estate Portfolio [Member] | General Construction [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	305
Total Loans	305
Commercial Real Estate Portfolio [Member] | General Construction [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2018	168
Amortized Cost - Revolving Loans	3,394
Total Loans	3,562
Commercial Real Estate Portfolio [Member] | General Construction [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	94
Total Loans	94
Consumer Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	139,139
Amortized Cost Basis by Origination Year 2019	391,458
Amortized Cost Basis by Origination Year 2018	127,003
Amortized Cost Basis by Origination Year 2017	128,961
Amortized Cost Basis by Origination Year 2016	112,815
Amortized Cost Basis by Origination Year Prior to 2016	123,964
Amortized Cost - Revolving Loans	421,171
Total Loans	1,444,511
Current	1,437,554
Total Past Due	6,957
Consumer Real Estate Portfolio [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	17,606
Amortized Cost Basis by Origination Year 2019	23,227
Amortized Cost Basis by Origination Year 2018	13,430
Amortized Cost Basis by Origination Year 2017	454
Amortized Cost Basis by Origination Year 2016	86
Amortized Cost Basis by Origination Year Prior to 2016	2,916
Amortized Cost - Revolving Loans	419,468
Total Loans	477,187
Consumer Real Estate Portfolio [Member] | HELOC [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	473,836
Consumer Real Estate Portfolio [Member] | HELOC [Member] | Non-performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	190
Amortized Cost Basis by Origination Year 2018	130
Amortized Cost Basis by Origination Year 2017	208
Amortized Cost Basis by Origination Year 2016	144
Amortized Cost Basis by Origination Year Prior to 2016	2,679
Consumer Real Estate Portfolio [Member] | First Lien: 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	119,235
Amortized Cost Basis by Origination Year 2019	358,923
Amortized Cost Basis by Origination Year 2018	110,014
Amortized Cost Basis by Origination Year 2017	126,240
Amortized Cost Basis by Origination Year 2016	111,528
Amortized Cost Basis by Origination Year Prior to 2016	118,687
Amortized Cost - Revolving Loans	1,412
Total Loans	946,039
Consumer Real Estate Portfolio [Member] | First Lien: 1-4 Family [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	943,957
Consumer Real Estate Portfolio [Member] | First Lien: 1-4 Family [Member] | Non-performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	138
Amortized Cost Basis by Origination Year 2018	78
Amortized Cost Basis by Origination Year 2017	1,072
Amortized Cost Basis by Origination Year 2016	472
Amortized Cost Basis by Origination Year Prior to 2016	322
Consumer Real Estate Portfolio [Member] | Junior Lien: 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	2,298
Amortized Cost Basis by Origination Year 2019	9,308
Amortized Cost Basis by Origination Year 2018	3,559
Amortized Cost Basis by Origination Year 2017	2,267
Amortized Cost Basis by Origination Year 2016	1,201
Amortized Cost Basis by Origination Year Prior to 2016	2,361
Amortized Cost - Revolving Loans	291
Total Loans	21,285
Consumer Real Estate Portfolio [Member] | Junior Lien: 1-4 Family [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	21,196
Consumer Real Estate Portfolio [Member] | Junior Lien: 1-4 Family [Member] | Non-performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2018	49
Amortized Cost Basis by Origination Year 2016	24
Amortized Cost Basis by Origination Year Prior to 2016	16
Consumer Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	5,559
Amortized Cost Basis by Origination Year 2019	22,179
Amortized Cost Basis by Origination Year 2018	8,273
Amortized Cost Basis by Origination Year 2017	3,748
Amortized Cost Basis by Origination Year 2016	2,824
Amortized Cost Basis by Origination Year Prior to 2016	1,476
Amortized Cost - Revolving Loans	102,662
Total Loans	146,721
Current	146,390
Total Past Due	331
Consumer Portfolio [Member] | Revolving Line [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year Prior to 2016	85
Amortized Cost - Revolving Loans	85,927
Total Loans	86,012
Consumer Portfolio [Member] | Revolving Line [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	85,888
Consumer Portfolio [Member] | Revolving Line [Member] | Non-performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2017	124
Consumer Portfolio [Member] | Auto [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	4,314
Amortized Cost Basis by Origination Year 2019	13,670
Amortized Cost Basis by Origination Year 2018	5,117
Amortized Cost Basis by Origination Year 2017	3,110
Amortized Cost Basis by Origination Year 2016	1,553
Amortized Cost Basis by Origination Year Prior to 2016	1,036
Total Loans	28,800
Consumer Portfolio [Member] | Auto [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	28,744
Consumer Portfolio [Member] | Auto [Member] | Non-performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	55
Amortized Cost Basis by Origination Year Prior to 2016	1
Consumer Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	1,245
Amortized Cost Basis by Origination Year 2019	8,509
Amortized Cost Basis by Origination Year 2018	3,156
Amortized Cost Basis by Origination Year 2017	638
Amortized Cost Basis by Origination Year 2016	1,271
Amortized Cost Basis by Origination Year Prior to 2016	355
Amortized Cost - Revolving Loans	16,735
Total Loans	31,909
Consumer Portfolio [Member] | Other [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	31,905
Consumer Portfolio [Member] | Other [Member] | Non-performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2017	4
Consumer Portfolio [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		222,423
Total Past Due		4,319
Consumer Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		133,086
Total Past Due		$ 388
Credit Cards Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	373,607
Total Loans	373,607
Current	368,739
Total Past Due	4,868
Credit Cards Portfolio [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	203,318
Total Loans	203,318
Credit Cards Portfolio [Member] | Consumer [Member] | Transactor Accounts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	48,428
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, Less than 600 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	9,795
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 600-619 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	3,642
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 620-639 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	6,569
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 640-659 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	11,654
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 660-679 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	19,194
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 680-699 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	20,566
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 700-719 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	19,869
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 720-739 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	18,228
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 740-759 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	14,799
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 760-779 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	9,994
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 780-799 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	7,894
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 800-819 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	5,590
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 820-839 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	4,558
Credit Cards Portfolio [Member] | Consumer [Member] | Revolver Accounts | FICO Score, 840+ [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,538
Credit Cards Portfolio [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost - Revolving Loans	170,289
Total Loans	170,289
Current	157,772
Total Past Due	12,517
Leases and Other Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	586
Amortized Cost Basis by Origination Year 2019	13,250
Amortized Cost Basis by Origination Year 2018	9,470
Amortized Cost Basis by Origination Year 2017	4,277
Amortized Cost Basis by Origination Year 2016	2,414
Amortized Cost Basis by Origination Year Prior to 2016	6,658
Amortized Cost - Revolving Loans	188,640
Total Loans	225,295
Current	225,226
Total Past Due	69
Leases and Other Portfolio [Member] | Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2019	557
Amortized Cost Basis by Origination Year 2017	833
Amortized Cost Basis by Origination Year Prior to 2016	769
Total Loans	2,159
Leases and Other Portfolio [Member] | Leases [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,159
Leases and Other Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost Basis by Origination Year 2020	586
Amortized Cost Basis by Origination Year 2019	12,693
Amortized Cost Basis by Origination Year 2018	9,470
Amortized Cost Basis by Origination Year 2017	3,444
Amortized Cost Basis by Origination Year 2016	2,414
Amortized Cost Basis by Origination Year Prior to 2016	5,889
Amortized Cost - Revolving Loans	188,640
Total Loans	223,136
Leases and Other Portfolio [Member] | Other [Member] | Non-watch List [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	222,234
Leases and Other Portfolio [Member] | Other [Member] | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	700
Leases and Other Portfolio [Member] | Other [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 202

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses - Credit Risk Profile by Risk Rating (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	$ 13,949,710	$ 13,431,722	$ 12,549,732
Commercial [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		5,842,002
Commercial [Member] | Originated and Non-PCI Loans [Member] | Non-watch List [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		5,380,205
Commercial [Member] | Originated and Non-PCI Loans [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		257,040
Commercial [Member] | Originated and Non-PCI Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		91,020
Commercial [Member] | Originated and Non-PCI Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		113,737
Asset-based [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		292,231
Asset-based [Member] | Originated and Non-PCI Loans [Member] | Non-watch List [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		230,526
Asset-based [Member] | Originated and Non-PCI Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		34,640
Asset-based [Member] | Originated and Non-PCI Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		27,065
Factoring [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		170,560
Factoring [Member] | Originated and Non-PCI Loans [Member] | Non-watch List [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		127,310
Factoring [Member] | Originated and Non-PCI Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		1,376
Factoring [Member] | Originated and Non-PCI Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		41,874
Real estate - construction [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		842,346
Real estate - construction [Member] | Originated and Non-PCI Loans [Member] | Non-watch List [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		837,836
Real estate - construction [Member] | Originated and Non-PCI Loans [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		175
Real estate - construction [Member] | Originated and Non-PCI Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		307
Real estate - construction [Member] | Originated and Non-PCI Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		4,028
Real estate - commercial [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		4,328,724
Real estate - commercial [Member] | Originated and Non-PCI Loans [Member] | Non-watch List [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		4,078,673
Real estate - commercial [Member] | Originated and Non-PCI Loans [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		110,530
Real estate - commercial [Member] | Originated and Non-PCI Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		28,020
Real estate - commercial [Member] | Originated and Non-PCI Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		$ 111,501

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses - Credit Risk Profile Based on Payment Activity (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	$ 13,949,710	$ 13,431,722	$ 12,549,732
Leases Portfolio [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		1,978	$ 4,811
Originated and Non-PCI Loans [Member] | Leases Portfolio [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		1,978
Originated and Non-PCI Loans [Member] | Performing [Member] | Leases Portfolio [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		1,978
Commercial Credit Card [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		182,238
Commercial Credit Card [Member] | Originated and Non-PCI Loans [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		182,214
Commercial Credit Card [Member] | Originated and Non-PCI Loans [Member] | Non-performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		24
Real Estate Residential [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		933,276
Real Estate Residential [Member] | Originated and Non-PCI Loans [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		926,312
Real Estate Residential [Member] | Originated and Non-PCI Loans [Member] | Non-performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		6,964
Real Estate HELOC [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		478,151
Real Estate HELOC [Member] | Originated and Non-PCI Loans [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		468,228
Real Estate HELOC [Member] | Originated and Non-PCI Loans [Member] | Non-performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		9,923
Consumer Credit Card [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		226,742
Consumer Credit Card [Member] | Originated and Non-PCI Loans [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		225,939
Consumer Credit Card [Member] | Originated and Non-PCI Loans [Member] | Non-performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		803
Consumer Other [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		133,474
Consumer Other [Member] | Originated and Non-PCI Loans [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		132,414
Consumer Other [Member] | Originated and Non-PCI Loans [Member] | Non-performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity		$ 1,060

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Rollforward of Allowance for Credit/Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020		Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 101,788
Charge-offs	(9,764)
Recoveries	2,092
Provision	88,000
Ending balance	191,146
Beginning balance	101,788	[1]	$ 103,635
Charge-offs			(13,744)
Recoveries			1,420
Provision			12,350
Ending balance	187,911	[1]	103,661
Ending balance: individually evaluated for impairment			5,648
Ending balance: collectively evaluated for impairment			98,013
Ending balance: loans	13,949,710		12,549,732
Ending balance: individually evaluated for impairment			59,039
Ending balance: collectively evaluated for impairment			12,490,693
ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	9,030
Commercial and Industrial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	63,313
Charge-offs	(1,315)
Recoveries	1,476
Provision	55,381
Ending balance	122,532
Commercial and Industrial Portfolio [Member] | ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	3,677
Specialty Lending Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	2,545
Provision	856
Ending balance	3,549
Specialty Lending Portfolio [Member] | ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	148
Commercial Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	15,951
Charge-offs	(6,062)
Recoveries	21
Provision	24,559
Ending balance	35,395
Commercial Real Estate Portfolio [Member] | ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	926
Consumer Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	2,623
Charge-offs	(13)
Recoveries	14
Provision	1,401
Ending balance	4,177
Consumer Real Estate Portfolio [Member] | ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	152
Consumer Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	543
Charge-offs	(248)
Recoveries	97
Provision	704
Ending balance	1,127
Beginning balance			9,071
Charge-offs			(2,467)
Recoveries			721
Provision			1,603
Ending balance			8,928
Ending balance: collectively evaluated for impairment			8,928
Ending balance: loans			355,538
Ending balance: individually evaluated for impairment			349
Ending balance: collectively evaluated for impairment			355,189
Consumer Portfolio [Member] | ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	31
Credit Cards Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	15,739
Charge-offs	(2,126)
Recoveries	484
Provision	3,812
Ending balance	18,823
Credit Cards Portfolio [Member] | ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	914
Leases and Other Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	1,074
Provision	1,172
Ending balance	2,308
Leases and Other Portfolio [Member] | ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	62
Total - Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	101,788
Charge-offs	(9,764)
Recoveries	2,092
Provision	87,885
Ending balance	187,911
Total - Loans [Member] | ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	5,910
HTM [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision	115
Ending balance	3,235
HTM [Member] | ASU Nos. 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
ASU 2016-13 adjustment	$ 3,120
Commercial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance			80,888
Charge-offs			(11,163)
Recoveries			626
Provision			9,981
Ending balance			80,332
Ending balance: individually evaluated for impairment			5,547
Ending balance: collectively evaluated for impairment			74,785
Ending balance: loans			6,261,244
Ending balance: individually evaluated for impairment			37,493
Ending balance: collectively evaluated for impairment			6,223,751
Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance			13,664
Charge-offs			(114)
Recoveries			73
Provision			767
Ending balance			14,390
Ending balance: individually evaluated for impairment			101
Ending balance: collectively evaluated for impairment			14,289
Ending balance: loans			5,928,139
Ending balance: individually evaluated for impairment			21,197
Ending balance: collectively evaluated for impairment			5,906,942
Leases Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance			12
Provision			(1)
Ending balance			11
Ending balance: collectively evaluated for impairment			11
Ending balance: loans			4,811
Ending balance: collectively evaluated for impairment			$ 4,811
[1]	As of December 31, 2019, this line represents the Allowance for loan losses. See further discussion of this change in Note 3, “New Accounting Pronouncements.”

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses - Summary of Amortized Cost Balance of Financial Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	$ 13,949,710
Related Allowance for Credit Losses	191,146	$ 101,788
Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	96,609
Related Allowance for Credit Losses	7,345
Amortized Cost of Collateral Dependent Assets with no related Allowance	67,677
Commercial and Industrial Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	5,952,364
Related Allowance for Credit Losses	122,532	63,313
Commercial and Industrial Portfolio [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	42,613
Related Allowance for Credit Losses	6,607
Amortized Cost of Collateral Dependent Assets with no related Allowance	22,102
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	5,758,200
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	34,636
Related Allowance for Credit Losses	6,607
Amortized Cost of Collateral Dependent Assets with no related Allowance	14,125
Commercial and Industrial Portfolio [Member] | Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	178,562
Commercial and Industrial Portfolio [Member] | Agriculture [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	7,977
Amortized Cost of Collateral Dependent Assets with no related Allowance	7,977
Specialty Lending Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	523,425
Related Allowance for Credit Losses	3,549	2,545
Specialty Lending Portfolio [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	1,455
Related Allowance for Credit Losses	41
Amortized Cost of Collateral Dependent Assets with no related Allowance	1,011
Specialty Lending Portfolio [Member] | Asset-based Lending [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	356,636
Specialty Lending Portfolio [Member] | Asset-based Lending [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	907
Amortized Cost of Collateral Dependent Assets with no related Allowance	907
Specialty Lending Portfolio [Member] | Factoring [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	166,789
Specialty Lending Portfolio [Member] | Factoring [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	548
Related Allowance for Credit Losses	41
Amortized Cost of Collateral Dependent Assets with no related Allowance	104
Commercial Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	5,283,787
Related Allowance for Credit Losses	35,395	15,951
Commercial Real Estate Portfolio [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	46,587
Related Allowance for Credit Losses	616
Amortized Cost of Collateral Dependent Assets with no related Allowance	38,703
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	1,567,358
Commercial Real Estate Portfolio [Member] | Owner-occupied [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	32,561
Related Allowance for Credit Losses	21
Amortized Cost of Collateral Dependent Assets with no related Allowance	27,389
Commercial Real Estate Portfolio [Member] | Non-owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	1,921,143
Commercial Real Estate Portfolio [Member] | Non-owner-occupied [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	1,221
Amortized Cost of Collateral Dependent Assets with no related Allowance	1,221
Commercial Real Estate Portfolio [Member] | Farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	426,756
Commercial Real Estate Portfolio [Member] | Farmland [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	9,316
Amortized Cost of Collateral Dependent Assets with no related Allowance	9,316
Commercial Real Estate Portfolio [Member] | 5+ Multi-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	390,716
Commercial Real Estate Portfolio [Member] | 1-4 Family Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	40,463
Commercial Real Estate Portfolio [Member] | General Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	937,351
Commercial Real Estate Portfolio [Member] | General Construction [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	3,489
Related Allowance for Credit Losses	595
Amortized Cost of Collateral Dependent Assets with no related Allowance	777
Consumer Real Estate Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	1,444,511
Related Allowance for Credit Losses	4,177	2,623
Consumer Real Estate Portfolio [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	5,701
Related Allowance for Credit Losses	81
Amortized Cost of Collateral Dependent Assets with no related Allowance	5,608
Consumer Real Estate Portfolio [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	477,187
Consumer Real Estate Portfolio [Member] | HELOC [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	3,351
Amortized Cost of Collateral Dependent Assets with no related Allowance	3,351
Consumer Real Estate Portfolio [Member] | First Lien: 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	946,039
Consumer Real Estate Portfolio [Member] | First Lien: 1-4 Family [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	2,082
Amortized Cost of Collateral Dependent Assets with no related Allowance	2,082
Consumer Real Estate Portfolio [Member] | Junior Lien: 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	21,285
Consumer Real Estate Portfolio [Member] | Junior Lien: 1-4 Family [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	268
Related Allowance for Credit Losses	81
Amortized Cost of Collateral Dependent Assets with no related Allowance	175
Consumer Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	146,721
Related Allowance for Credit Losses	1,127	543
Consumer Portfolio [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	184
Amortized Cost of Collateral Dependent Assets with no related Allowance	184
Consumer Portfolio [Member] | Revolving Line [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	86,012
Consumer Portfolio [Member] | Revolving Line [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	124
Amortized Cost of Collateral Dependent Assets with no related Allowance	124
Consumer Portfolio [Member] | Auto [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	28,800
Consumer Portfolio [Member] | Auto [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	56
Amortized Cost of Collateral Dependent Assets with no related Allowance	56
Consumer Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	31,909
Consumer Portfolio [Member] | Other [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	4
Amortized Cost of Collateral Dependent Assets with no related Allowance	4
Leases and Other Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	225,295
Related Allowance for Credit Losses	2,308	$ 1,074
Leases and Other Portfolio [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	69
Amortized Cost of Collateral Dependent Assets with no related Allowance	69
Leases and Other Portfolio [Member] | Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	2,159
Leases and Other Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	223,136
Leases and Other Portfolio [Member] | Other [Member] | Collateral Dependent Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost of Collateral Dependent Assets	69
Amortized Cost of Collateral Dependent Assets with no related Allowance	$ 69

Loans and Allowance for Cred_12

Loans and Allowance for Credit Losses - Analysis of Impaired Loans by Class (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 66,334
Recorded Investment with No Allowance	45,939
Recorded Investment with Allowance	5,877
Total Recorded Investment	51,816
Related Allowance	738
Average Recorded Investment	56,139
Commercial Portfolio [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	32,301
Recorded Investment with No Allowance	20,986
Recorded Investment with Allowance	856
Total Recorded Investment	21,842
Related Allowance	271
Average Recorded Investment	31,271
Commercial Portfolio [Member] | Asset-based [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	948
Recorded Investment with No Allowance	948
Total Recorded Investment	948
Average Recorded Investment	190
Commercial Portfolio [Member] | Factoring [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	2,979
Recorded Investment with No Allowance	2,979
Total Recorded Investment	2,979
Average Recorded Investment	3,917
Real Estate Portfolio [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	97
Recorded Investment with No Allowance	95
Total Recorded Investment	95
Average Recorded Investment	19
Real Estate Portfolio [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	28,258
Recorded Investment with No Allowance	19,314
Recorded Investment with Allowance	4,928
Total Recorded Investment	24,242
Related Allowance	387
Average Recorded Investment	19,826
Real Estate Portfolio [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	1,751
Recorded Investment with No Allowance	1,617
Recorded Investment with Allowance	93
Total Recorded Investment	1,710
Related Allowance	80
Average Recorded Investment	846
Consumer Portfolio [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	$ 70

Securities - Securities Availab

Securities - Securities Available for Sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 7,353,180	$ 7,323,980
Gross Unrealized Gains	294,578	143,872
Gross Unrealized Losses	(8,307)	(20,490)
Fair Value	7,639,451	7,447,362
U.S. Treasury [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	30,549	63,835
Gross Unrealized Gains	1,056	408
Gross Unrealized Losses		(165)
Fair Value	31,605	64,078
U.S. Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	94,195	89,867
Gross Unrealized Gains	6,421	3,154
Fair Value	100,616	93,021
Mortgage-backed [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,067,786	4,030,688
Gross Unrealized Gains	171,441	58,184
Gross Unrealized Losses	(4,578)	(17,078)
Fair Value	4,234,649	4,071,794
State and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,980,676	2,954,276
Gross Unrealized Gains	114,292	78,867
Gross Unrealized Losses	(1,276)	(3,226)
Fair Value	3,093,692	3,029,917
Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	179,974	185,314
Gross Unrealized Gains	1,368	3,259
Gross Unrealized Losses	(2,453)	(21)
Fair Value	$ 178,889	$ 188,552

Securities - Summary of Contrac

Securities - Summary of Contractual Maturity Information for Securities Available for Sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investments Debt And Equity Securities [Abstract]
Due in 1 year or less, Amortized Cost	$ 225,943
Due after 1 year through 5 years, Amortized Cost	842,108
Due after 5 years through 10 years, Amortized Cost	580,312
Due after 10 years, Amortized Cost	1,637,031
Total, Amortized Cost	3,285,394
Mortgage-backed securities, Amortized Cost	4,067,786
Amortized Cost	7,353,180	$ 7,323,980
Due in 1 year or less, Fair Value	226,438
Due after 1 year through 5 years, Fair Value	852,880
Due after 5 years through 10 years, Fair Value	594,772
Due after 10 years, Fair Value	1,730,712
Total, Fair Value	3,404,802
Mortgage-backed securities, Fair Value	4,234,649
Total securities available for sale, Fair Value	$ 7,639,451	$ 7,447,362

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Schedule of Trading Securities and Other Trading Assets [Line Items]
Proceeds from sales of securities available for sale	$ 84,439,000	$ 53,329,000
Gross realized gains from securities	1,200,000	809,000
Gross realized losses from securities	0	0
Accrued interest on securities available for sale	32,500,000
ACL related to AFS Securities	0
Sales of securities held to maturity	0	0
Accrued interest on securities held to maturity	6,500,000
Unrealized gains on trading securities	150,000	$ 52,000
Securities sold not yet purchased	17,600,000		$ 14,600,000
Other Non-marketable Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Fair value of securities including alternative investment securities	5,600,000		7,000,000
Collateral Dependent Assets [Member] | U.S. Government and Other Public Deposit [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Pledged securities for deposits	6,000,000,000		5,800,000,000
Collateral Dependent Assets [Member] | Federal Reserve Discount Window [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Pledged securities for deposits	$ 979,200,000		$ 481,200,000

Securities - Gross Unrealized L

Securities - Gross Unrealized Losses and Fair Value of Investment Securities Available for Sale (Detail) $ in Thousands	Mar. 31, 2020USD ($)Security	Dec. 31, 2018USD ($)
Gain (Loss) on Investments [Line Items]
Less than 12 months, Count | Security	284
Less than 12 months, Fair Value	$ 387,828	$ 1,322,540
Less than 12 months, Unrealized Losses	$ (7,799)	(8,341)
12 months or more, Count | Security	14
12 months or more, Fair Value	$ 35,385	565,188
12 months or more, Unrealized Losses	$ (508)	(12,149)
Total Count | Security	298
Total Fair Value	$ 423,213	1,887,728
Total Unrealized Losses	$ (8,307)	(20,490)
U.S. Treasury [Member]
Gain (Loss) on Investments [Line Items]
12 months or more, Fair Value		19,863
12 months or more, Unrealized Losses		(165)
Total Fair Value		19,863
Total Unrealized Losses		(165)
U.S. Agencies [Member]
Gain (Loss) on Investments [Line Items]
Less than 12 months, Count | Security	1
Less than 12 months, Fair Value	$ 4,406
Total Count | Security	1
Total Fair Value	$ 4,406
Mortgage-backed [Member]
Gain (Loss) on Investments [Line Items]
Less than 12 months, Count | Security	36
Less than 12 months, Fair Value	$ 159,593	947,415
Less than 12 months, Unrealized Losses	$ (4,079)	(5,236)
12 months or more, Count | Security	10
12 months or more, Fair Value	$ 34,227	517,824
12 months or more, Unrealized Losses	$ (499)	(11,842)
Total Count | Security	46
Total Fair Value	$ 193,820	1,465,239
Total Unrealized Losses	$ (4,578)	(17,078)
State and political subdivisions [Member]
Gain (Loss) on Investments [Line Items]
Less than 12 months, Count | Security	184
Less than 12 months, Fair Value	$ 127,235	361,440
Less than 12 months, Unrealized Losses	$ (1,267)	(3,084)
12 months or more, Count | Security	4
12 months or more, Fair Value	$ 1,158	27,501
12 months or more, Unrealized Losses	$ (9)	(142)
Total Count | Security	188
Total Fair Value	$ 128,393	388,941
Total Unrealized Losses	$ (1,276)	(3,226)
Corporates [Member]
Gain (Loss) on Investments [Line Items]
Less than 12 months, Count | Security	63
Less than 12 months, Fair Value	$ 96,594	13,685
Less than 12 months, Unrealized Losses	$ (2,453)	(21)
Total Count | Security	63
Total Fair Value	$ 96,594	13,685
Total Unrealized Losses	$ (2,453)	$ (21)

Securities - Contractual Maturi

Securities - Contractual Maturity Information for Securities Held to Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investments Debt And Equity Securities [Abstract]
Due in 1 year or less, Amortized Cost	$ 14,151	$ 15,323
Due after 1 year through 5 years, Amortized Cost	93,532	100,623
Due after 5 years through 10 years, Amortized Cost	414,223	394,591
Due after 10 years, Amortized Cost	592,254	605,565
Total state and political subdivisions, Amortized Cost	1,114,160	1,116,102
Held to maturity securities, allowance for credit losses	3,235	0
Total state and political subdivisions, net of allowance for credit losses	1,110,925	1,116,102
Due in 1 year or less, Gross Unrealized Gains	20	5
Due after 1 year through 5 years, Gross Unrealized Gains	2,785	374
Due after 5 years through 10 years, Gross Unrealized Gains	11,534	389
Due after 10 years, Gross Unrealized Gains	22,230	494
Total state and political subdivisions, Gross Unrealized Gains	36,569	1,262
Due in 1 year or less, Gross Unrealized Losses		(60)
Due after 1 year through 5 years, Gross Unrealized Losses	(135)	(699)
Due after 5 years through 10 years, Gross Unrealized Losses	(760)	(8,400)
Due after 10 years, Gross Unrealized Losses	(2,925)	(25,860)
Total state and political subdivisions, Gross Unrealized Losses	(3,820)	(35,019)
Due in 1 year or less, Fair Value	14,171	15,268
Due after 1 year through 5 years, Fair Value	96,182	100,298
Due after 5 years through 10 years, Fair Value	424,997	386,580
Due after 10 years, Fair Value	611,559	580,199
Total state and political subdivisions, Fair Value	$ 1,146,909	$ 1,082,345

Securities - Gross Unrealized_2

Securities - Gross Unrealized Losses and Fair Value of Investment Securities Held to Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Schedule Of Held To Maturity Securities [Line Items]
Less than 12 months, Fair Value	$ 20,357	$ 471,544
Less than 12 months,Unrealized Losses	(384)	(12,424)
12 months or more, Fair Value	113,935	546,572
12 months or more, Unrealized Losses	(3,436)	(22,595)
Total Fair Value	134,292	1,018,116
Total Unrealized Losses	(3,820)	(35,019)
State and political subdivisions [Member]
Schedule Of Held To Maturity Securities [Line Items]
Less than 12 months, Fair Value	20,357	471,544
Less than 12 months,Unrealized Losses	(384)	(12,424)
12 months or more, Fair Value	113,935	546,572
12 months or more, Unrealized Losses	(3,436)	(22,595)
Total Fair Value	134,292	1,018,116
Total Unrealized Losses	$ (3,820)	$ (35,019)

Securities - Schedule of Amorti

Securities - Schedule of Amortized Cost Basis by Credit Rating of Held to Maturity Investment (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	$ 1,114,160	$ 1,116,102
Competitive [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	1,036,844
Utilities [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	77,316
Credit Rating, AA [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	8,998
Credit Rating, AA [Member] | Competitive [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	8,998
Credit Rating, A [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	451,431
Credit Rating, A [Member] | Competitive [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	394,082
Credit Rating, A [Member] | Utilities [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	57,349
Credit Rating, BBB [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	617,951
Credit Rating, BBB [Member] | Competitive [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	597,984
Credit Rating, BBB [Member] | Utilities [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	19,967
Credit Rating, BB [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	22,519
Credit Rating, BB [Member] | Competitive [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	22,519
Credit Rating, B [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	685
Credit Rating, B [Member] | Competitive [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	685
Credit Rating, CCC-C [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	12,576
Credit Rating, CCC-C [Member] | Competitive [Member]
Debt Securities Held To Maturity Credit Quality Indicator [Line Items]
Held to maturity securities	$ 12,576

Securities - Schedule of Federa

Securities - Schedule of Federal Reserve Bank Stock and Federal Home Loan Bank Stock and Other Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Schedule of Other Securities [Line Items]
Fair Value	$ 135,194	$ 108,420
Federal Reserve Bank Stock and Other Securities [Member]
Schedule of Other Securities [Line Items]
Amortized Cost	132,795	103,130
Gross Unrealized Gains	2,428	5,295
Gross Unrealized Losses	(29)	(5)
Fair Value	135,194	108,420
FRB and FHLB stock [Member] | Federal Reserve Bank Stock and Other Securities [Member]
Schedule of Other Securities [Line Items]
Amortized Cost	33,252	33,262
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	33,252	33,262
Other securities - non-marketable [Member] | Federal Reserve Bank Stock and Other Securities [Member]
Schedule of Other Securities [Line Items]
Amortized Cost	99,543	69,868
Gross Unrealized Gains	2,428	5,295
Gross Unrealized Losses	(29)	(5)
Fair Value	$ 101,942	$ 75,158

Goodwill and Other Intangible_2

Goodwill and Other Intangibles - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill And Other Intangible Assets [Line Items]
Goodwill	$ 180,867	$ 180,867	$ 180,867
Commercial Banking [Member]
Goodwill And Other Intangible Assets [Line Items]
Goodwill	59,419	59,419	59,419
Institutional Banking [Member]
Goodwill And Other Intangible Assets [Line Items]
Goodwill	51,332	51,332	51,332
Personal Banking [Member]
Goodwill And Other Intangible Assets [Line Items]
Goodwill	$ 70,116	$ 70,116	$ 70,116

Goodwill and Other Intangible_3

Goodwill and Other Intangibles - Changes In Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 139,987	$ 140,011
Accumulated amortization	114,148	112,414
Net carrying amount	25,839	27,597
Core Deposit Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	50,059	50,059
Accumulated amortization	47,607	47,140
Net carrying amount	2,452	2,919
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	89,928	89,952
Accumulated amortization	66,541	65,274
Net carrying amount	$ 23,387	$ 24,678

Goodwill and Other Intangible_4

Goodwill and Other Intangibles - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)Acquisition
Corporate Trust Business [Member]
Finite Lived Intangible Assets [Line Items]
Number of business acquired | Acquisition		2
Corporate Trust Business One [Member]
Finite Lived Intangible Assets [Line Items]
Post-closing purchase adjustment	$ 24
Customer Relationship [Member] | Corporate Trust Business [Member]
Finite Lived Intangible Assets [Line Items]
Aggregate intangibles acquired		$ 18,100

Goodwill and Other Intangible_5

Goodwill and Other Intangibles - Aggregate Amortization Expense Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Aggregate amortization expense	$ 1,734	$ 1,327

Goodwill and Other Intangible_6

Goodwill and Other Intangibles - Estimated Amortization Expense of Intangible Assets (Detail) $ in Thousands	Mar. 31, 2020USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
For the nine months ending December 31, 2020	$ 4,678
For the year ending December 31, 2021	5,408
For the year ending December 31, 2022	4,468
For the year ending December 31, 2023	3,750
For the year ending December 31, 2024	$ 2,965

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase - Remaining Contractual Maturities Of Repurchase Agreements (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements	$ 1,867,857	$ 1,864,635
Overnight [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements	1,664,427
30 to 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements	202,930	110,765
Over 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements	500
2 to 29 days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements		1,753,870
U.S. Agencies [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements	1,867,857	1,864,635
U.S. Agencies [Member] | Overnight [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements	1,664,427
U.S. Agencies [Member] | 30 to 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements	202,930	110,765
U.S. Agencies [Member] | Over 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements	$ 500
U.S. Agencies [Member] | 2 to 29 days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreements		$ 1,753,870

Business Segment Reporting - Ad

Business Segment Reporting - Additional Information (Detail) - Segment	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting [Abstract]
Number of reportable segments	3	4

Business Segment Reporting - Sc

Business Segment Reporting - Schedule of Segment Financial Results (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Net interest income		$ 173,941	$ 163,868
Provision for credit losses	[1]	88,000	12,350
Noninterest income		98,424	107,382
Noninterest expense		188,619	190,626
(Loss) income before income taxes		(4,254)	68,274
Income tax (benefit) expense		(815)	10,530
NET (LOSS) INCOME		(3,439)	57,744
Average assets		26,040,000	22,854,000
Commercial Banking [Member]
Segment Reporting Information [Line Items]
Net interest income		106,948	99,814
Provision for credit losses		82,220	10,329
Noninterest income		11,240	23,181
Noninterest expense		59,043	66,820
(Loss) income before income taxes		(23,075)	45,846
Income tax (benefit) expense		(4,421)	7,071
NET (LOSS) INCOME		(18,654)	38,775
Average assets		11,609,000	10,448,000
Institutional Banking [Member]
Segment Reporting Information [Line Items]
Net interest income		33,036	31,752
Provision for credit losses		275	286
Noninterest income		61,952	55,850
Noninterest expense		68,453	65,398
(Loss) income before income taxes		26,260	21,918
Income tax (benefit) expense		5,032	3,380
NET (LOSS) INCOME		21,228	18,538
Average assets		9,006,000	7,013,000
Personal Banking [Member]
Segment Reporting Information [Line Items]
Net interest income		33,957	32,302
Provision for credit losses		5,505	1,735
Noninterest income		25,232	28,351
Noninterest expense		61,123	58,408
(Loss) income before income taxes		(7,439)	510
Income tax (benefit) expense		(1,426)	79
NET (LOSS) INCOME		(6,013)	431
Average assets		$ 5,425,000	$ 5,393,000
[1]	For the three months ended March 31, 2019, this line represents the Provision for loan losses. See further discussion of this change in Note 3, “New Accounting Pronouncements.

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Detail) - ASC 606 [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Disaggregation Of Revenue [Line Items]
Total receivables of revenue recognized	$ 55.6		$ 58
Bankcard Fees [Member]
Disaggregation Of Revenue [Line Items]
Bankcard expenses	$ 8.4	$ 8.3

Revenue Recognition - Summary o

Revenue Recognition - Summary of Disaggregation of Revenue According to Revenue Stream and Business Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation Of Revenue [Line Items]
Revenue (Expense) out of Scope of ASC 606	$ (10,642)	$ 9,793
Noninterest income	98,424	107,382
Trust and Securities Processing [Member]
Disaggregation Of Revenue [Line Items]
Noninterest income	47,000	41,957
Trading And Investment Banking
Disaggregation Of Revenue [Line Items]
Revenue (Expense) out of Scope of ASC 606	1,067	5,453
Noninterest income	1,723	5,581
Service Charges On Deposit Accounts [Member]
Disaggregation Of Revenue [Line Items]
Revenue (Expense) out of Scope of ASC 606	43	35
Noninterest income	25,081	21,281
Insurance Fees and Commissions [Member]
Disaggregation Of Revenue [Line Items]
Noninterest income	259	338
Brokerage Fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest income	9,860	7,243
Bankcard Fees [Member]
Disaggregation Of Revenue [Line Items]
Revenue (Expense) out of Scope of ASC 606	(8,157)	(8,061)
Noninterest income	16,545	17,067
Gains On Sales Of Securities Available For Sale, Net [Member]
Disaggregation Of Revenue [Line Items]
Revenue (Expense) out of Scope of ASC 606	1,227	809
Noninterest income	1,227	809
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue (Expense) out of Scope of ASC 606	(4,822)	11,557
Noninterest income	(3,271)	13,106
Commercial Banking [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	22,339	22,336
Noninterest income	11,240	23,181
Commercial Banking [Member] | Service Charges On Deposit Accounts [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	6,892	7,461
Commercial Banking [Member] | Brokerage Fees [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	59	48
Commercial Banking [Member] | Bankcard Fees [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	14,988	14,488
Commercial Banking [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	400	339
Institutional Banking [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	60,277	49,180
Noninterest income	61,952	55,850
Institutional Banking [Member] | Trust and Securities Processing [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	31,262	26,689
Institutional Banking [Member] | Trading And Investment Banking
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	656	128
Institutional Banking [Member] | Service Charges On Deposit Accounts [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	15,607	11,077
Institutional Banking [Member] | Brokerage Fees [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	7,590	5,422
Institutional Banking [Member] | Bankcard Fees [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	4,724	5,525
Institutional Banking [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	438	339
Personal Banking [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	26,450	26,073
Noninterest income	25,232	28,351
Personal Banking [Member] | Trust and Securities Processing [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	15,738	15,268
Personal Banking [Member] | Service Charges On Deposit Accounts [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	2,539	2,708
Personal Banking [Member] | Insurance Fees and Commissions [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	259	338
Personal Banking [Member] | Brokerage Fees [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	2,211	1,773
Personal Banking [Member] | Bankcard Fees [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	4,990	5,115
Personal Banking [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue Scope of ASC 606	$ 713	$ 871

Commitments, Contingencies an_3

Commitments, Contingencies and Guarantees - Notional Amount of Off-Balance Sheet Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Commitments to extend credit for loans (excluding credit card loans) [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	$ 7,254,024	$ 7,409,338
Commitments to extend credit under credit card loans [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	3,285,687	3,188,905
Commercial letters of credit [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	5,320	4,460
Standby letters of credit [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	301,416	299,933
Forward contracts [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	218,750	58,287
Spot foreign exchange contracts [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	$ 4,375	$ 1,980

Commitments, Contingencies an_4

Commitments, Contingencies and Guarantees - Additional Information (Detail) $ in Millions	Mar. 31, 2020USD ($)
Other Liabilities [Member]
Commitments and Contingencies Disclosure [Line Items]
ACL for off-balance sheet credit exposures	$ 3

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Summary of Fair Value of Derivative Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	$ 145,347	$ 55,276
Derivative Liabilities, Fair Value	10,437	5,997
Derivatives not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	112,603	47,458
Derivative Liabilities, Fair Value	10,435	5,997
Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	32,744	$ 7,818
Derivative Liabilities, Fair Value	$ 2

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020USD ($)Derivative	Dec. 31, 2019USD ($)Derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Termination value of derivatives in net liability position	$ 257,000
Collateral posted for derivative instruments	$ 373,000
Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate hedging exposure to variability in future cash flows for forecasted transactions, maximum period	16 years 5 months 19 days
Interest Rate Swap [Member] | Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 5,200,000	$ 5,300,000
Number of interest rate swaps | Derivative	1	1
Interest Rate Swap [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 51,500,000	$ 51,500,000
Number of interest rate swaps | Derivative	2	2
Interest Rate Swap [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Reclassification from AOCI to interest	$ 1,200,000
Interest Rate Swap [Member] | Derivatives not Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 2,000,000,000	$ 1,900,000,000
Number of interest rate swaps | Derivative	146	142
Interest Rate Floor [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 750,000,000	$ 750,000,000
Number of interest rate swaps | Derivative	1	1
Interest Rate Floor [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member] | Reduction To Interest Income [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Reclassification from AOCI to interest	$ 4,000,000

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities - Summary of Amount of Gain (Loss) Recognized in Other Non-Interest Expense in Consolidated Statements of Income Related to Derivative Assets and Liabilities (Detail) - Interest Rate Swap [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivatives not Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized	$ (259)	$ (873)
Derivatives Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized	(1)	1
Derivatives Designated as Hedging Instruments [Member] | Fair value adjustments on derivatives [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized	(203)	(58)
Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized	$ 202	$ 59

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities - Summary of Effect of Hedges on AOCI in Consolidated Statements of Comprehensive Income Related to Company's Derivative Assets and Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gains and losses on derivative hedges	$ 14,525	$ (2,088)
Gain (Loss) Reclassified from AOCI into Earnings	(768)	5
Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gains and losses on derivative hedges	14,525	(2,088)
Gain (Loss) Recognized in OCI Included Component	18,887	(2,088)
Loss Recognized in OCI Excluded Component	(4,362)
Gain (Loss) Reclassified from AOCI into Earnings	(768)	5
Gain (Loss) Reclassified from AOCI into Earnings Included Component	(132)	5
Gain (Loss) Reclassified from AOCI into Earnings Excluded Component	(636)
Derivatives Designated as Hedging Instruments [Member] | Interest Rate Floor [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gains and losses on derivative hedges	24,934
Gain (Loss) Recognized in OCI Included Component	29,296
Loss Recognized in OCI Excluded Component	(4,362)
Gain (Loss) Reclassified from AOCI into Earnings	(636)
Gain (Loss) Reclassified from AOCI into Earnings Excluded Component	(636)
Derivatives Designated as Hedging Instruments [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gains and losses on derivative hedges	(10,409)	(2,088)
Gain (Loss) Recognized in OCI Included Component	(10,409)	(2,088)
Gain (Loss) Reclassified from AOCI into Earnings	(132)	5
Gain (Loss) Reclassified from AOCI into Earnings Included Component	$ (132)	$ 5

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	$ 61,177	$ 45,618
Available for sale securities	7,639,451	7,447,362
Derivative Assets, Fair Value	145,347	55,276
Derivative Liabilities, Fair Value	10,437	5,997
Securities sold not yet purchased	17,600	14,600
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	22,436	22,216
Available for sale securities	210,494	252,630
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	38,741	23,402
Available for sale securities	7,428,957	7,194,732
U.S. Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	100,616	93,021
Mortgage-backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	4,234,649	4,071,794
State and political subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	3,093,692	3,029,917
Corporates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	178,889	188,552
U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	31,605	64,078
Fair Value Measurement, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	61,177	45,618
Available for sale securities	7,639,451	7,447,362
Company-owned life insurance	47,726	63,900
Bank-owned life insurance	282,562	280,709
Derivative Assets, Fair Value	145,347	55,276
Total	8,176,263	7,892,865
Derivative Liabilities, Fair Value	10,437	5,997
Securities sold not yet purchased	17,631	14,599
Total	28,068	20,596
Fair Value Measurement, Recurring [Member] | Trading - other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	17,193	16,567
Fair Value Measurement, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	22,436	22,216
Available for sale securities	210,494	252,630
Total	232,930	274,846
Fair Value Measurement, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Trading - other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	17,193	16,567
Fair Value Measurement, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	38,741	23,402
Available for sale securities	7,428,957	7,194,732
Company-owned life insurance	47,726	63,900
Bank-owned life insurance	282,562	280,709
Derivative Assets, Fair Value	145,347	55,276
Total	7,943,333	7,618,019
Derivative Liabilities, Fair Value	10,437	5,997
Securities sold not yet purchased	17,631	14,599
Total	28,068	20,596
Fair Value Measurement, Recurring [Member] | U.S. Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	3,477	1,246
Available for sale securities	100,616	93,021
Fair Value Measurement, Recurring [Member] | U.S. Agencies [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	3,477	1,246
Available for sale securities	100,616	93,021
Fair Value Measurement, Recurring [Member] | Mortgage-backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	5	392
Available for sale securities	4,234,649	4,071,794
Fair Value Measurement, Recurring [Member] | Mortgage-backed [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	5	392
Available for sale securities	4,234,649	4,071,794
Fair Value Measurement, Recurring [Member] | State and political subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	35,259	21,764
Available for sale securities	3,093,692	3,029,917
Fair Value Measurement, Recurring [Member] | State and political subdivisions [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	35,259	21,764
Available for sale securities	3,093,692	3,029,917
Fair Value Measurement, Recurring [Member] | Corporates [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	5,243	5,649
Available for sale securities	178,889	188,552
Fair Value Measurement, Recurring [Member] | Corporates [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	5,243	5,649
Available for sale securities	178,889	188,552
Fair Value Measurement, Recurring [Member] | U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	31,605	64,078
Fair Value Measurement, Recurring [Member] | U.S. Treasury [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	$ 31,605	$ 64,078

Fair Value Measurements - Ass_2

Fair Value Measurements - Assets Measured at Fair Value on Non-Recurring Basis (Detail) - Fair Value, Measurements, Non-Recurring [Member] - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 21,590	$ 5,194
Total Gains (Losses) Recognized	(6,607)	3,980
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	21,590	5,194
Impaired loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value		5,139
Total Gains (Losses) Recognized		3,973
Impaired loans [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value		5,139
Collateral dependent assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	21,587
Total Gains (Losses) Recognized	(6,607)
Collateral dependent assets [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	21,587
Other real estate owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	3	55
Total Gains (Losses) Recognized		7
Other real estate owned [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 3	$ 55

Fair Value Measurements - Estim

Fair Value Measurements - Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and short-term investments	$ 2,234,557	$ 3,276,794
Available for sale securities	7,639,451	7,447,362
Securities held to maturity (exclusive of allowance for credit losses)	1,114,160	1,116,102
Trading securities	61,177	45,618
Other securities	135,194	108,420
Loans (exclusive of allowance for credit/loan losses)	13,959,295	13,439,525
Derivatives	145,347	55,276
Demand and savings deposits	20,190,500	20,376,880
Time deposits	985,020	1,226,364
Other borrowings	1,905,917	1,896,508
Long-term debt	121,582	97,490
Derivatives	10,437	5,997
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and short-term investments	2,234,557	3,276,794
Available for sale securities	7,639,451	7,447,362
Securities held to maturity (exclusive of allowance for credit losses)	1,146,909	1,082,345
Trading securities	61,177	45,618
Other securities	135,194	108,420
Loans (exclusive of allowance for credit/loan losses)	14,291,643	13,601,595
Derivatives	145,347	55,276
Demand and savings deposits	20,190,500	20,376,880
Time deposits	992,339	1,226,646
Other borrowings	1,905,917	1,896,508
Long-term debt	137,078	97,831
Derivatives	10,437	5,997
Commitments to extend credit for loans	1,463	5,908
Commercial letters of credit	13	113
Standby letters of credit	956	2,966
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and short-term investments	1,449,807	1,701,449
Available for sale securities	210,494	252,630
Trading securities	22,436	22,216
Demand and savings deposits	20,190,500	20,376,880
Other borrowings	23,060	31,873
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and short-term investments	784,750	1,575,345
Available for sale securities	7,428,957	7,194,732
Securities held to maturity (exclusive of allowance for credit losses)	1,146,909	1,082,345
Trading securities	38,741	23,402
Other securities	135,194	108,420
Loans (exclusive of allowance for credit/loan losses)	14,291,643	13,601,595
Derivatives	145,347	55,276
Time deposits	992,339	1,226,646
Other borrowings	1,882,857	1,864,635
Long-term debt	137,078	97,831
Derivatives	$ 10,437	$ 5,997