Document and Entity Information
Document and Entity Information - $ / shares | 3 Months Ended | ||
Mar. 31, 2020 | Apr. 27, 2020 | Dec. 31, 2019 | |
Entity Information [Line Items] | |||
Document Type | 10-Q | ||
Document Quarterly Report | true | ||
Document Period End Date | Mar. 31, 2020 | ||
Document Transition Report | false | ||
Entity File Number | 001-13221 | ||
Entity Registrant Name | Cullen/Frost Bankers, Inc. | ||
Entity Incorporation, State or Country Code | TX | ||
Entity Tax Identification Number | 74-1751768 | ||
Entity Address, Address Line One | 111 W. Houston Street, | ||
Entity Address, City or Town | San Antonio, | ||
Entity Address, State or Province | TX | ||
Entity Address, Postal Zip Code | 78205 | ||
City Area Code | (210) | ||
Local Phone Number | 220-4011 | ||
Title of 12(b) Security | Common Stock, $.01 Par Value | ||
Trading Symbol | CFR | ||
Security Exchange Name | NYSE | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
Entity Filer Category | Large Accelerated Filer | ||
Entity Small Business | false | ||
Entity Emerging Growth Company | false | ||
Entity Shell Company | false | ||
Entity Common Stock, Shares Outstanding | 62,553,394 | ||
Common stock, par value | $ 0.01 | $ 0.01 | |
Amendment Flag | false | ||
Document Fiscal Year Focus | 2020 | ||
Document Fiscal Period Focus | Q1 | ||
Entity Central Index Key | 0000039263 | ||
Current Fiscal Year End Date | --12-31 |
Consolidated Balance Sheets
Consolidated Balance Sheets - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Assets: | ||
Cash and due from banks | $ 572,129 | $ 581,857 |
Interest-bearing deposits | 3,246,731 | 2,849,950 |
Federal funds sold and resell agreements | 376,725 | 356,374 |
Total cash and cash equivalents | 4,195,585 | 3,788,181 |
Securities held to maturity, net of allowance for credit losses of $200 at March 31, 2020 | 1,984,149 | 2,030,005 |
Securities available for sale, at estimated fair value | 10,467,977 | 11,269,591 |
Trading account securities | 25,921 | 24,298 |
Loans, net of unearned discounts | 15,338,260 | 14,750,332 |
Less: Allowance for credit losses on loans | (263,881) | (132,167) |
Net loans | 15,074,379 | 14,618,165 |
Premises and equipment, net | 1,035,881 | 1,011,947 |
Goodwill | 654,952 | 654,952 |
Other intangible assets, net | 2,224 | 2,481 |
Cash surrender value of life insurance policies | 188,078 | 187,156 |
Accrued interest receivable and other assets | 518,159 | 440,652 |
Total assets | 34,147,305 | 34,027,428 |
Liabilities: | ||
Non-interest-bearing demand deposits | 11,202,208 | 10,873,629 |
Interest-bearing deposits | 16,938,659 | 16,765,935 |
Total deposits | 28,140,867 | 27,639,564 |
Federal funds purchased and repurchase agreements | 1,170,978 | 1,695,342 |
Junior subordinated deferrable interest debentures, net of unamortized issuance costs | 136,314 | 136,299 |
Subordinated notes, net of unamortized issuance costs | 98,904 | 98,865 |
Accrued interest payable and other liabilities | 773,576 | 545,690 |
Total liabilities | 30,320,639 | 30,115,760 |
Shareholders’ Equity: | ||
Preferred stock, par value $0.01 per share; 10,000,000 shares authorized; 6,000,000 Series A shares ($25 liquidation preference) issued at December 31, 2019 | 0 | 144,486 |
Common stock, par value $0.01 per share; 210,000,000 shares authorized; 64,236,306 shares issued at March 31, 2020 and December 31, 2019 | 642 | 642 |
Additional paid-in capital | 985,762 | 983,250 |
Retained earnings | 2,635,588 | 2,667,534 |
Accumulated other comprehensive income (loss), net of tax | 363,815 | 267,370 |
Treasury stock, at cost; 1,682,912 shares at March 31, 2020 and 1,567,302 shares at December 31, 2019 | (159,141) | (151,614) |
Total shareholders’ equity | 3,826,666 | 3,911,668 |
Total liabilities and shareholders’ equity | $ 34,147,305 | $ 34,027,428 |
Consolidated Balance Sheets (Pa
Consolidated Balance Sheets (Parenthetical) - USD ($) | Mar. 31, 2020 | Dec. 31, 2019 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ 200,000 | $ 0 |
Preferred stock, par value | $ 0 | $ 0.01 |
Preferred stock, shares authorized | 0 | 10,000,000 |
Preferred stock, shares issued | 0 | 6,000,000 |
Common stock, par value | $ 0.01 | $ 0.01 |
Common stock, shares authorized | 210,000,000 | 210,000,000 |
Common stock, shares issued | 64,236,306 | 64,236,306 |
Treasury stock, shares | 1,682,912 | 1,567,302 |
Series A Preferred Stock [Member] | ||
Preferred stock liquidation preference value | $ 0 | $ 25 |
Consolidated Statements of Inco
Consolidated Statements of Income - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Interest income: | ||
Loans, including fees | $ 172,137 | $ 185,272 |
Securities: | ||
Taxable | 26,030 | 24,679 |
Tax-exempt | 58,886 | 59,143 |
Interest-bearing deposits | 8,125 | 10,639 |
Federal funds sold and resell agreements | 802 | 1,588 |
Total interest income | 265,980 | 281,321 |
Interest expense: | ||
Deposits | 16,053 | 27,174 |
Federal funds purchased and repurchase agreements | 3,037 | 5,016 |
Junior subordinated deferrable interest debentures | 1,205 | 1,498 |
Other long-term borrowings | 1,164 | 1,164 |
Total interest expense | 21,459 | 34,852 |
Net interest income | 244,521 | 246,469 |
Credit loss expense | 175,197 | 11,003 |
Net interest income after credit loss expense | 69,324 | 235,466 |
Non-interest income: | ||
Trust and investment management fees | 34,473 | 31,697 |
Service charges on deposit accounts | 22,651 | 20,790 |
Insurance commissions and fees | 16,485 | 18,406 |
Interchange and debit card transaction fees | 3,255 | 3,280 |
Other charges, commissions and fees | 9,365 | 9,062 |
Net gain (loss) on securities transactions | 108,989 | 0 |
Other | 17,697 | 13,550 |
Total non-interest income | 212,915 | 96,785 |
Non-interest expense: | ||
Salaries and wages | 98,812 | 92,476 |
Employee benefits | 24,889 | 23,526 |
Net occupancy | 25,384 | 19,267 |
Technology, furniture and equipment | 25,240 | 21,664 |
Deposit insurance | 2,624 | 2,808 |
Intangible amortization | 257 | 325 |
Other | 46,957 | 41,734 |
Total non-interest expense | 224,163 | 201,800 |
Income before income taxes | 58,076 | 130,451 |
Income taxes | 3,323 | 13,955 |
Net income | 54,753 | 116,496 |
Preferred stock dividends | 2,016 | 2,016 |
Redemption of preferred stock | 5,514 | 0 |
Net income available to common shareholders | $ 47,223 | $ 114,480 |
Earnings per common share: | ||
Basic | $ 0.75 | $ 1.80 |
Diluted | $ 0.75 | $ 1.79 |
Consolidated Statements of Comp
Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Net income | $ 54,753 | $ 116,496 |
Other comprehensive income (loss), before tax: | ||
Change in net unrealized gain/loss on securities available for sale during the period | 230,118 | 198,146 |
Change in net unrealized gain on securities transferred to held to maturity | (377) | (344) |
Reclassification adjustment for net (gains) losses included in net income | (108,989) | 0 |
Total securities available for sale and transferred securities, before tax amount | 120,752 | 197,802 |
Defined-benefit post-retirement benefit plans: | ||
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) | 1,330 | 1,406 |
Total defined-benefit post-retirement benefit plans | 1,330 | 1,406 |
Other comprehensive income (loss), before tax | 122,082 | 199,208 |
Deferred tax expense (benefit) | 25,637 | 41,834 |
Other comprehensive income (loss), net of tax | 96,445 | 157,374 |
Comprehensive income (loss) | $ 151,198 | $ 273,870 |
Consolidated Statements of Chan
Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands | Total | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Treasury Stock [Member] |
Cumulative effect of accounting change | $ (14,672) | $ (14,672) | |||||
Total shareholders' equity at beginning of period, as adjusted | 3,354,245 | $ 144,486 | $ 642 | $ 967,304 | 2,425,330 | $ (63,600) | $ (119,917) |
Total shareholders’ equity at beginning of period at Dec. 31, 2018 | 3,368,917 | 144,486 | 642 | 967,304 | 2,440,002 | (63,600) | (119,917) |
Net income | 116,496 | 116,496 | |||||
Other comprehensive income (loss) | 157,374 | 157,374 | |||||
Stock option exercises/stock unit conversions (66,215 shares YTD in 2020 and 100,865 shares YTD in 2019) | 4,885 | (4,001) | 8,886 | ||||
Stock compensation expense recognized in earnings | 3,654 | 3,654 | |||||
Purchase of treasury stock (181,825 shares YTD in 2020 and 5,351 shares YTD in 2019) | (519) | (519) | |||||
Cash dividends – preferred stock (approximately $0.34 per share YTD in both 2020 and 2019) | (2,016) | (2,016) | |||||
Cash dividends – common stock ($0.71 per share YTD in 2020 and $0.67 per share YTD in 2019) | (42,602) | (42,602) | |||||
Total shareholders’ equity at end of period at Mar. 31, 2019 | 3,591,517 | 144,486 | 642 | 970,958 | 2,493,207 | 93,774 | (111,550) |
Cumulative effect of accounting change | (29,252) | (29,252) | |||||
Total shareholders' equity at beginning of period, as adjusted | 3,882,416 | 144,486 | 642 | 983,250 | 2,638,282 | 267,370 | (151,614) |
Total shareholders’ equity at beginning of period at Dec. 31, 2019 | 3,911,668 | 144,486 | 642 | 983,250 | 2,667,534 | 267,370 | (151,614) |
Net income | 54,753 | 54,753 | |||||
Other comprehensive income (loss) | 96,445 | 96,445 | |||||
Stock option exercises/stock unit conversions (66,215 shares YTD in 2020 and 100,865 shares YTD in 2019) | 1,463 | (4,983) | 6,446 | ||||
Stock compensation expense recognized in earnings | 2,512 | 2,512 | |||||
Preferred stock, redemption amount (6,000,000 shares) | (150,000) | (144,486) | (5,514) | ||||
Purchase of treasury stock (181,825 shares YTD in 2020 and 5,351 shares YTD in 2019) | (13,973) | (13,973) | |||||
Cash dividends – preferred stock (approximately $0.34 per share YTD in both 2020 and 2019) | (2,016) | (2,016) | |||||
Cash dividends – common stock ($0.71 per share YTD in 2020 and $0.67 per share YTD in 2019) | (44,934) | (44,934) | |||||
Total shareholders’ equity at end of period at Mar. 31, 2020 | $ 3,826,666 | $ 0 | $ 642 | $ 985,762 | $ 2,635,588 | $ 363,815 | $ (159,141) |
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] | ||
Stock option exercises/stock unit conversions (shares) | 66,215 | 100,865 |
Redemption of preferred stock (shares) | 6,000,000 | 0 |
Treasury stock, shares, acquired | 181,825 | 5,351 |
Approximate cash dividends declared on preferred stock, per share | $ 0.34 | $ 0.34 |
Cash dividends declared on common stock, per share | $ 0.71 | $ 0.67 |
Consolidated Statements of Cash
Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Operating Activities: | ||
Net income | $ 54,753 | $ 116,496 |
Adjustments to reconcile net income to net cash from operating activities: | ||
Credit loss expense | 175,197 | 11,003 |
Deferred tax expense (benefit) | (26,089) | (1,044) |
Accretion of loan discounts | (4,060) | (3,757) |
Securities premium amortization (discount accretion), net | 31,760 | 28,696 |
Net (gain) loss on securities transactions | (108,989) | 0 |
Depreciation and amortization | 15,518 | 12,752 |
Net (gain) loss on sale/write-down of assets/foreclosed assets | 397 | (4,437) |
Stock-based compensation | 2,512 | 3,654 |
Net tax benefit from stock-based compensation | 336 | 716 |
Earnings on life insurance policies | (922) | (898) |
Net change in: | ||
Trading account securities | (12,819) | 1,582 |
Lease right-of-use assets | 5,620 | 4,833 |
Accrued interest receivable and other assets | (81,100) | 32,634 |
Accrued interest payable and other liabilities | 196,814 | (56,098) |
Net cash from operating activities | 248,928 | 146,132 |
Investing Activities: | ||
Securities held-to-maturity - Purchases | (1,500) | 0 |
Securities held to maturity: Maturities, calls and principal repayments | 41,526 | 23,421 |
Securities available for sale: | ||
Purchases | (687,759) | (1,526,279) |
Sales | 1,111,102 | 944,903 |
Maturities, calls and principal repayments | 581,882 | 121,471 |
Proceeds from sale of loans | 0 | 12,699 |
Net change in loans | (622,514) | (322,308) |
Benefits received on life insurance policies | 0 | 0 |
Proceeds from sales of premises and equipment | 1 | 4,667 |
Purchases of premises and equipment | (31,749) | (44,039) |
Proceeds from sales of repossessed properties | 8 | 0 |
Net cash from investing activities | 390,997 | (785,465) |
Financing Activities: | ||
Net change in deposits | 501,303 | (854,341) |
Net change in short-term borrowings | (524,364) | (140,399) |
Redemption of preferred stock | (150,000) | 0 |
Proceeds from stock option exercises | 1,463 | 4,885 |
Purchase of treasury stock | (13,973) | (519) |
Cash dividends paid on preferred stock | (2,016) | (2,016) |
Cash dividends paid on common stock | (44,934) | (42,602) |
Net cash from financing activities | (232,521) | (1,034,992) |
Net change in cash and cash equivalents | 407,404 | (1,674,325) |
Cash and cash equivalents at beginning of period | 3,788,181 | 3,955,779 |
Cash and cash equivalents at end of period | $ 4,195,585 | $ 2,281,454 |
Significant Accounting Policies
Significant Accounting Policies | 3 Months Ended |
Mar. 31, 2020 | |
Accounting Policies [Abstract] | |
Significant Accounting Policies | Significant Accounting Policies Nature of Operations. Cullen/Frost Bankers, Inc. (“Cullen/Frost”) is a financial holding company and a bank holding company headquartered in San Antonio, Texas that provides, through its subsidiaries, a broad array of products and services throughout numerous Texas markets. The terms “Cullen/Frost,” “the Corporation,” “we,” “us” and “our” mean Cullen/Frost Bankers, Inc. and its subsidiaries, when appropriate. In addition to general commercial and consumer banking, other products and services offered include trust and investment management, insurance, brokerage, mutual funds, leasing, treasury management, capital markets advisory and item processing. Basis of Presentation. The consolidated financial statements in this Quarterly Report on Form 10-Q include the accounts of Cullen/Frost and all other entities in which Cullen/Frost has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation. The accounting and financial reporting policies we follow conform, in all material respects, to accounting principles generally accepted in the United States and to general practices within the financial services industry. The consolidated financial statements in this Quarterly Report on Form 10-Q have not been audited by an independent registered public accounting firm, but in the opinion of management, reflect all adjustments necessary for a fair presentation of our financial position and results of operations. All such adjustments were of a normal and recurring nature. The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q adopted by the Securities and Exchange Commission (“SEC”). Accordingly, the financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements and should be read in conjunction with our consolidated financial statements, and notes thereto, for the year ended December 31, 2019 , included in our Annual Report on Form 10-K filed with the SEC on February 4, 2020 (the “ 2019 Form 10-K”). Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period. Use of Estimates . The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The allowance for loan losses and the fair values of financial instruments and the status of contingencies are particularly subject to change. Cash Flow Reporting . Additional cash flow information was as follows: Three Months Ended 2020 2019 Cash paid for interest $ 23,168 $ 34,402 Cash paid for income taxes — — Significant non-cash transactions: Unsettled securities transactions 11,196 7,612 Right-of-use lease assets obtained in exchange for lessee operating lease liabilities 9,892 170,479 Accounting Changes, Reclassifications and Restatements. Certain items in prior financial statements have been reclassified to conform to the current presentation. In addition, on January 1, 2020, we adopted Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” as subsequently updated for certain clarifications, targeted relief and codification improvements. Accounting Standards Codification (“ASC”) Topic 326 (“ASC 326”) replaces the previous “incurred loss” model for measuring credit losses, which encompassed allowances for current known and inherent losses within the portfolio, with an “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. The new current expected credit loss (“CECL”) model requires the measurement of all expected credit losses for financial assets measured at amortized cost and certain off-balance-sheet credit exposures based on historical experience, current conditions, and reasonable and supportable forecasts. ASC 326 also requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASC 326 includes certain changes to the accounting for available-for-sale securities including the requirement to present credit losses as an allowance rather than as a direct write-down for available-for-sale securities management does not intend to sell or believes that it is more likely than not they will be required to sell. We adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Upon adoption, we recognized an after-tax cumulative effect reduction to retained earnings totaling $29.3 million , as detailed in the table below. Operating results for periods after January 1, 2020 are presented in accordance with ASC 326 while prior period amounts continue to be reported in accordance with previously applicable standards and the accounting policies described in our 2019 Form 10-K. The following table details the impact of the adoption of ASC 326 on the allowance for credit losses as of January 1, 2020. January 1, 2020 Pre-Adoption Allowance Impact of Adoption Post-Adoption Allowance Cumulative Effect on Retained Earnings Securities held to maturity: U.S. Treasury $ — $ — $ — $ — Residential mortgage-backed securities — — — — States and political subdivisions — 215 215 (170 ) Other — — — — Total $ — $ 215 $ 215 $ (170 ) Loans: Commercial and industrial $ 51,593 $ 21,263 $ 72,856 $ (16,798 ) Energy 37,382 (10,453 ) 26,929 8,258 Commercial real estate 31,037 (13,519 ) 17,518 10,680 Consumer real estate 4,113 2,392 6,505 (1,890 ) Consumer and other 8,042 (2,248 ) 5,794 1,776 Total $ 132,167 $ (2,565 ) $ 129,602 $ 2,026 Off-balance-sheet credit exposures $ 500 $ 39,377 $ 39,877 $ (31,108 ) In connection with the adoption of ASC 326, we revised certain accounting policies and implemented certain accounting policy elections. The revised accounting policies are described below. Securities : Securities are classified as held to maturity and carried at amortized cost when management has the positive intent and ability to hold them until maturity. Securities to be held for indefinite periods of time are classified as available for sale and carried at fair value, with the unrealized holding gains and losses (those for which no allowance for credit losses are recorded) reported as a component of other comprehensive income, net of tax. Securities held for resale in anticipation of short-term market movements are classified as trading and are carried at fair value, with changes in unrealized holding gains and losses included in income. Management determines the appropriate classification of securities at the time of purchase. Securities with limited marketability, such as stock in the Federal Reserve Bank and the Federal Home Loan Bank, are carried at cost. Interest income on securities includes amortization of purchase premiums and discounts. Premiums and discounts on securities are generally amortized using the interest method with a constant effective yield without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Premiums on callable securities are amortized to their earliest call date. A security is placed on non-accrual status if (i) principal or interest has been in default for a period of 90 days or more or (ii) full payment of principal and interest is not expected. Interest accrued but not received for a security placed on non-accrual status is reversed against interest income. Gains and losses on sales are recorded on the trade date and are derived from the amortized cost of the security sold. Allowance For Credit Losses - Held-to-Maturity Securities : The allowance for credit losses on held-to-maturity securities is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of held-to-maturity securities to present management's best estimate of the net amount expected to be collected. Held-to-maturity securities are charged-off against the allowance when deemed uncollectible by management. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management measures expected credit losses on held-to-maturity securities on a collective basis by major security type with each type sharing similar risk characteristics, and considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. Management has made the accounting policy election to exclude accrued interest receivable on held-to-maturity securities from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on held-to-maturity securities is presented in Note 2 - Securities. Allowance For Credit Losses - Available-for-Sale Securities : For available-for sale securities in an unrealized loss position, we first assess whether (i) we intend to sell, or (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis. If either case is affirmative, any previously recognized allowances are charged-off and the security's amortized cost is written down to fair value through income. If neither case is affirmative, the security is evaluated to determine whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and any adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on available-for-sale securities from the estimate of credit losses. Available-for-sale securities are charged-off against the allowance or, in the absence of any allowance, written down through income when deemed uncollectible by management or when either of the aforementioned criteria regarding intent or requirement to sell is met. Loans : Loans are reported at the principal balance outstanding net of unearned discounts. Interest income on loans is reported on the level-yield method and includes amortization of deferred loan fees and costs over the loan term. Net loan commitment fees or costs for commitment periods greater than one year are deferred and amortized into fee income or other expense on a straight-line basis over the commitment period. Income on direct financing leases is recognized on a basis that achieves a constant periodic rate of return on the outstanding investment. Further information regarding our accounting policies related to past due loans, non-accrual loans, collateral dependent loans and troubled-debt restructurings is presented in Note 3 - Loans. Allowance For Credit Losses - Loans : The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present management's best estimate of the net amount expected to be collected. Loans are charged-off against the allowance when deemed uncollectible by management. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on loans from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on loans is presented in Note 3 - Loans. Allowance For Credit Losses - Off-Balance-Sheet Credit Exposures : The allowance for credit losses on off-balance-sheet credit exposures is a liability account, calculated in accordance with ASC 326, representing expected credit losses over the contractual period for which we are exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if we have the unconditional right to cancel the obligation. The allowance is reported as a component of accrued interest payable and other liabilities in our consolidated balance sheets. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Further information regarding our policies and methodology used to estimate the allowance for credit losses on off-balance-sheet credit exposures is presented in Note 6 - Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies. As more fully discussed in our 2019 Form 10-K, we adopted certain accounting standard updates related to accounting for leases as of January 1, 2019 using a modified-retrospective transition approach and recognized right-of-use lease assets and related lease liabilities totaling $170.5 million and $174.4 million , respectively, as of that date. We also adopted an accounting standard update which shortened the amortization period for certain callable debt securities held at a premium as of January 1, 2019 using a modified retrospective transition adoption approach and recognized a cumulative effect reduction to retained earnings totaling $14.7 million . |
Securities
Securities | 3 Months Ended |
Mar. 31, 2020 | |
Investments, Debt and Equity Securities [Abstract] | |
Securities | Securities Securities - Held to Maturity. A summary of the amortized cost, fair value and allowance for credit losses related to securities held to maturity as of March 31, 2020 and December 31, 2019 is presented below. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Allowance for Credit Losses Net Carrying Amount March 31, 2020 Residential mortgage-backed securities $ 530,396 $ 37,234 $ — $ 567,630 $ — $ 530,396 States and political subdivisions 1,452,453 36,296 — 1,488,749 (200 ) 1,452,253 Other 1,500 — — 1,500 — 1,500 Total $ 1,984,349 $ 73,530 $ — $ 2,057,879 $ (200 ) $ 1,984,149 December 31, 2019 Residential mortgage-backed securities $ 530,861 $ 22 $ 9,365 $ 521,518 $ — $ 530,861 States and political subdivisions 1,497,644 28,909 896 1,525,657 — 1,497,644 Other 1,500 — — 1,500 — 1,500 Total $ 2,030,005 $ 28,931 $ 10,261 $ 2,048,675 $ — $ 2,030,005 All mortgage-backed securities included in the above table were issued by U.S. government agencies and corporations. The carrying value of held-to-maturity securities pledged to secure public funds, trust deposits, repurchase agreements and for other purposes, as required or permitted by law was $647.1 million and $561.4 million at March 31, 2020 and December 31, 2019 , respectively. Accrued interest receivable on held-to-maturity securities totaled $12.1 million and $21.1 million at March 31, 2020 and December 31, 2019 , respectively and is included in accrued interest receivable and other assets in the accompanying consolidated balance sheets. From time to time, we have reclassified certain securities from available for sale to held to maturity. During the fourth quarter of 2019, we reclassified securities with an aggregate fair value of $377.8 million and an aggregate net unrealized gain of $3.3 million ( $2.6 million , net of tax) on the date of the transfer. The net unamortized, unrealized gain remaining on transferred securities, including those transferred in 2019 and in years prior, included in accumulated other comprehensive income in the accompanying balance sheet totaled $4.4 million ( $3.5 million , net of tax) at March 31, 2020 and $4.8 million ( $3.8 million , net of tax) at December 31, 2019 . This amount will be amortized out of accumulated other comprehensive income over the remaining life of the underlying securities as an adjustment of the yield on those securities. The allowance for credit losses on held-to-maturity securities is a contra-asset valuation account that is deducted from the amortized cost basis of held-to-maturity securities to present the net amount expected to be collected. Management measures expected credit losses on held-to-maturity securities on a collective basis by major security type with each type sharing similar risk characteristics, and considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. With regard to U.S. Treasury and residential mortgage-backed securities issued by the U.S. government, or agencies thereof, it is expected that the securities will not be settled at prices less than the amortized cost bases of the securities as such securities are backed by the full faith and credit of and/or guaranteed by the U.S. government. Accordingly, no allowance for credit losses has been recorded for these securities. With regard to securities issued by States and political subdivisions and other held-to-maturity securities, management considers (i) issuer bond ratings, (ii) historical loss rates for given bond ratings, (iii) whether issuers continue to make timely principal and interest payments under the contractual terms of the securities, (iv) internal forecasts and (v) whether or not such securities are guaranteed by the Texas Permanent School Fund (“PSF”) or pre-refunded by the issuers. The following table summarizes Moody's and/or Standard & Poor's bond ratings for our portfolio of held-to-maturity securities issued by States and political subdivisions and other securities as of March 31, 2020: States and Political Subdivisions Not Guaranteed or Pre-Refunded Guaranteed by the Texas PSF Pre-Refunded Total Other Securities Aaa/AAA $ 131,760 $ 849,396 $ 284,678 $ 1,265,834 $ — Aa/AA 118,271 — — 118,271 — A 68,348 — — 68,348 — Not rated — — — — 1,500 Total $ 318,379 $ 849,396 $ 284,678 $ 1,452,453 $ 1,500 Historical loss rates associated with securities having similar grades as those in our portfolio have generally not been significant. Furthermore, as of March 31, 2020 , there were no past due principal or interest payments associated with these securities. The PSF is a sovereign wealth fund which serves to provide revenues for funding of public primary and secondary education in the State of Texas. Based upon (i) the PSF's AAA insurer financial strength rating, (ii) the PSF's substantial capitalization and excess guarantee capacity and (iii) a zero historical loss rate, no allowance for credit losses has been recorded for securities guaranteed by the PSF as there is no current expectation of credit losses related to these securities. Pre-refunded securities have been defeased by the issuer and are fully secured by cash and/or U.S. Treasury securities held in escrow for payment to holders when the underlying call dates of the securities are reached. Accordingly, no allowance for credit losses has been recorded for securities that have been defeased as there is no current expectation of credit losses related to these securities. The following table details activity in the allowance for credit losses on held-to-maturity securities during the three months ended March 31, 2020 . Beginning balance, prior to adoption of ASC 326 $ — Impact of adopting ASC 326 215 Credit loss expense (benefit) (15 ) Ending balance $ 200 Securities - Available for Sale. A summary of the amortized cost, fair value and allowance for credit losses related to securities available for sale as of March 31, 2020 and December 31, 2019 is presented below. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance for Credit Losses Estimated Fair Value March 31, 2020 U.S. Treasury $ 1,117,523 $ 49,741 $ — $ — $ 1,167,264 Residential mortgage-backed securities 2,009,523 80,423 — — 2,089,946 States and political subdivisions 6,785,079 382,976 189 — 7,167,866 Other 42,901 — — — 42,901 Total $ 9,955,026 $ 513,140 $ 189 $ — $ 10,467,977 December 31, 2019 U.S. Treasury $ 1,941,283 $ 18,934 $ 12,084 $ — $ 1,948,133 Residential mortgage-backed securities 2,176,275 32,608 1,289 — 2,207,594 States and political subdivisions 6,717,344 353,857 204 — 7,070,997 Other 42,867 — — — 42,867 Total $ 10,877,769 $ 405,399 $ 13,577 $ — $ 11,269,591 All mortgage-backed securities included in the above table were issued by U.S. government agencies and corporations. At March 31, 2020 , nearly all of the securities in our available for sale municipal bond portfolio were issued by the State of Texas or political subdivisions or agencies within the State of Texas, of which approximately 70.8% are either guaranteed by the PSF or have been pre-refunded. Securities with limited marketability, such as stock in the Federal Reserve Bank and the Federal Home Loan Bank, are carried at cost and are reported as other available for sale securities in the table above. The carrying value of available-for-sale securities pledged to secure public funds, trust deposits, repurchase agreements and for other purposes, as required or permitted by law was $2.6 billion and $3.4 billion at March 31, 2020 and December 31, 2019 , respectively. Accrued interest receivable on available-for-sale securities totaled $69.5 million and $115.9 million at March 31, 2020 and December 31, 2019 , respectively and is included in accrued interest receivable and other assets in the accompanying consolidated balance sheets. The table below summarizes, as of March 31, 2020 , securities available for sale in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by type of security and length of time in a continuous unrealized loss position. Less than 12 Months More than 12 Months Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses States and political subdivisions $ 67,949 $ 189 $ — $ — $ 67,949 $ 189 Total $ 67,949 $ 189 $ — $ — $ 67,949 $ 189 As of March 31, 2020 , no allowance for credit losses has been recognized on available for sale securities in an unrealized loss position as management does not believe any of the securities are impaired due to reasons of credit quality. This is based upon our analysis of the underlying risk characteristics, including credit ratings, and other qualitative factors (such as a PSF guarantee) related to our available for sale securities and in consideration of our historical credit loss experience and internal forecasts. The issuers of these securities continue to make timely principal and interest payments under the contractual terms of the securities. Furthermore, management does not have the intent to sell any of the securities classified as available for sale in the table above and believes that it is more likely than not that we will not have to sell any such securities before a recovery of cost. The unrealized losses are due to increases in market interest rates over the yields available at the time the underlying securities were purchased. The fair value is expected to recover as the securities approach their maturity date or repricing date or if market yields for such investments decline. Contractual Maturities. The following table summarizes the maturity distribution schedule of securities held to maturity and securities available for sale as of March 31, 2020 . Mortgage-backed securities are included in maturity categories based on their stated maturity date. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Other securities classified as available for sale include stock in the Federal Reserve Bank and the Federal Home Loan Bank, which have no maturity date. These securities have been included in the total column only. Within 1 Year 1 - 5 Years 5 - 10 Years After 10 Years Total Held To Maturity Amortized Cost Residential mortgage-backed securities $ — $ 332 $ 516,866 $ 13,198 $ 530,396 States and political subdivisions 25,324 170,386 496,235 760,508 1,452,453 Other — 1,500 — — 1,500 Total $ 25,324 $ 172,218 $ 1,013,101 $ 773,706 $ 1,984,349 Estimated Fair Value Residential mortgage-backed securities $ — $ 335 $ 553,409 $ 13,886 $ 567,630 States and political subdivisions 25,579 174,896 507,221 781,053 1,488,749 Other — 1,500 — — 1,500 Total $ 25,579 $ 176,731 $ 1,060,630 $ 794,939 $ 2,057,879 Available For Sale Amortized Cost U. S. Treasury $ 33,964 $ 1,083,559 $ — $ — $ 1,117,523 Residential mortgage-backed securities 236 68,185 5,859 1,935,243 2,009,523 States and political subdivisions 250,489 220,504 648,416 5,665,670 6,785,079 Other — — — — 42,901 Total $ 284,689 $ 1,372,248 $ 654,275 $ 7,600,913 $ 9,955,026 Estimated Fair Value U. S. Treasury $ 34,181 $ 1,133,083 $ — $ — $ 1,167,264 Residential mortgage-backed securities 249 70,834 6,379 2,012,484 2,089,946 States and political subdivisions 252,108 231,285 686,745 5,997,728 7,167,866 Other — — — — 42,901 Total $ 286,538 $ 1,435,202 $ 693,124 $ 8,010,212 $ 10,467,977 Sales of Securities. Sales of securities available for sale were as follows: Three Months Ended 2020 2019 Proceeds from sales $ 1,111,102 $ 944,903 Gross realized gains 108,989 — Gross realized losses — — Tax (expense) benefit of securities gains/losses 22,888 — Premiums and Discounts . Premium amortization and discount accretion included in interest income on securities was as follows: Three Months Ended 2020 2019 Premium amortization $ (32,345 ) $ (29,879 ) Discount accretion 585 1,183 Net (premium amortization) discount accretion $ (31,760 ) $ (28,696 ) Trading Account Securities. Trading account securities, at estimated fair value, were as follows: March 31, December 31, U.S. Treasury $ 24,491 $ 24,298 States and political subdivisions 1,430 — Total $ 25,921 $ 24,298 Net gains and losses on trading account securities were as follows: Three Months Ended 2020 2019 Net gain on sales transactions $ 470 $ 506 Net mark-to-market gains (losses) 115 4 Net gain (loss) on trading account securities $ 585 $ 510 |
Loans
Loans | 3 Months Ended |
Mar. 31, 2020 | |
Receivables [Abstract] | |
Loans | Loans Loans were as follows: March 31, Percentage of Total December 31, Percentage of Total Commercial and industrial $ 5,536,760 36.1 % $ 5,187,466 35.2 % Energy: Production 1,268,832 8.3 1,348,900 9.2 Service 185,210 1.2 192,996 1.3 Other 114,812 0.7 110,986 0.8 Total energy 1,568,854 10.2 1,652,882 11.2 Commercial real estate: Commercial mortgages 4,920,882 32.1 4,594,113 31.1 Construction 1,265,441 8.3 1,312,659 8.9 Land 286,876 1.9 289,467 2.0 Total commercial real estate 6,473,199 42.3 6,196,239 42.0 Consumer real estate: Home equity loans 389,844 2.5 375,596 2.6 Home equity lines of credit 350,330 2.3 354,671 2.4 Other 480,933 3.1 464,146 3.1 Total consumer real estate 1,221,107 7.9 1,194,413 8.1 Total real estate 7,694,306 50.2 7,390,652 50.1 Consumer and other 538,340 3.5 519,332 3.5 Total loans $ 15,338,260 100.0 % $ 14,750,332 100.0 % Concentrations of Credit. Most of our lending activity occurs within the State of Texas, including the four largest metropolitan areas of Austin, Dallas/Ft. Worth, Houston and San Antonio, as well as other markets. The majority of our loan portfolio consists of commercial and industrial and commercial real estate loans. As of March 31, 2020 , there were no concentrations of loans related to any single industry in excess of 10% of total loans other than energy loans, which totaled 10.2% of total loans. Unfunded commitments to extend credit and standby letters of credit issued to customers in the energy industry totaled $1.2 billion and $84.4 million , respectively, as of March 31, 2020 . Foreign Loans. We have U.S. dollar denominated loans and commitments to borrowers in Mexico. The outstanding balance of these loans and the unfunded amounts available under these commitments were not significant at March 31, 2020 or December 31, 2019 . Related Party Loans . In the ordinary course of business, we have granted loans to certain directors, executive officers and their affiliates (collectively referred to as “related parties”). Such loans totaled $326.1 million at March 31, 2020 and $298.5 million at December 31, 2019 . Accrued Interest Receivable. Accrued interest receivable on loans totaled $42.3 million and $45.5 million at March 31, 2020 and December 31, 2019 , respectively and is included in accrued interest receivable and other assets in the accompany consolidated balance sheets. Non-Accrual and Past Due Loans. Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Loans are placed on non-accrual status when, in management’s opinion, the borrower may be unable to meet payment obligations as they become due, as well as when required by regulatory provisions. In determining whether or not a borrower may be unable to meet payment obligations for each class of loans, we consider the borrower’s debt service capacity through the analysis of current financial information, if available, and/or current information with regards to our collateral position. Regulatory provisions would typically require the placement of a loan on non-accrual status if (i) principal or interest has been in default for a period of 90 days or more unless the loan is both well secured and in the process of collection or (ii) full payment of principal and interest is not expected. Loans may be placed on non-accrual status regardless of whether or not such loans are considered past due. When interest accrual is discontinued, all unpaid accrued interest is reversed against income. Interest income on non-accrual loans is recognized only to the extent that cash payments are received in excess of principal due. A loan may be returned to accrual status when all the principal and interest amounts contractually due are brought current and future principal and interest amounts contractually due are reasonably assured, which is typically evidenced by a sustained period (at least six months) of repayment performance by the borrower. Non-accrual loans, segregated by class of loans, were as follows: March 31, 2020 December 31, 2019 Total Non-Accrual Non-Accrual with No Credit Loss Allowance Total Non-Accrual Non-Accrual with No Credit Loss Allowance Commercial and industrial $ 23,913 $ 11,085 $ 26,038 $ 13,266 Energy 28,702 28,702 65,761 3,281 Commercial real estate: Buildings, land and other 8,224 5,922 8,912 6,558 Construction 3,774 683 665 665 Consumer real estate 2,094 2,094 922 922 Consumer and other 20 1 5 — Total $ 66,727 $ 48,487 $ 102,303 $ 24,692 The following table presents non-accrual loans as of March 31, 2020 by class and year of origination. 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Commercial and industrial $ — $ 3,187 $ 9,012 $ 2,448 $ 384 $ 146 $ 4,601 $ 4,135 $ 23,913 Energy — — — — — — 3,035 25,667 28,702 Commercial real estate: Buildings, land and other — 2,207 34 1,470 306 3,639 568 — 8,224 Construction — 3,774 — — — — — — 3,774 Consumer real estate — — — 211 350 628 844 61 2,094 Consumer and other — 1 — — — — 19 — 20 Total $ — $ 9,169 $ 9,046 $ 4,129 $ 1,040 $ 4,413 $ 9,067 $ 29,863 $ 66,727 Had non-accrual loans performed in accordance with their original contract terms, we would have recognized additional interest income, net of tax, of approximately $1.0 million for the three months ended March 31, 2020 , and approximately $1.0 million for the three months ended March 31, 2019 . An age analysis of past due loans (including both accruing and non-accruing loans), segregated by class of loans, as of March 31, 2020 was as follows: Loans 30-89 Days Past Due Loans 90 or More Days Past Due Total Past Due Loans Current Loans Total Loans Accruing Loans 90 or More Days Past Due Commercial and industrial $ 38,518 $ 24,217 $ 62,735 $ 5,474,025 $ 5,536,760 $ 8,343 Energy 23,913 25,667 49,580 1,519,274 1,568,854 — Commercial real estate: Buildings, land and other 39,359 3,472 42,831 5,164,927 5,207,758 817 Construction 4,701 127 4,828 1,260,613 1,265,441 127 Consumer real estate 9,542 3,230 12,772 1,208,335 1,221,107 1,572 Consumer and other 6,134 1,013 7,147 531,193 538,340 1,013 Total $ 122,167 $ 57,726 $ 179,893 $ 15,158,367 $ 15,338,260 $ 11,872 Troubled Debt Restructurings . Troubled debt restructurings during the three months ended March 31, 2020 and March 31, 2019 are set forth in the following table. Three Months Ended Three Months Ended Balance at Restructure Balance at Period-End Balance at Restructure Balance at Period-End Commercial and industrial $ 2,191 $ 2,198 $ 307 $ 293 Commercial real estate: Buildings, land and other — — 5,901 5,898 $ 2,191 $ 2,198 $ 6,208 $ 6,191 Loan modifications are typically related to extending amortization periods, converting loans to interest only for a limited period of time, deferral of interest payments, waiver of certain covenants, consolidating notes and/or reducing collateral or interest rates. The modifications during the reported periods did not significantly impact our determination of the allowance for credit losses on loans. Additional information related to restructured loans as of or for the three months ended March 31, 2020 and March 31, 2019 is set forth in the following table. March 31, 2020 March 31, 2019 Restructured loans past due in excess of 90 days at period-end: Number of loans 3 4 Dollar amount of loans $ 1,733 $ 2,367 Restructured loans on non-accrual status at period end 2,198 2,162 Charge-offs of restructured loans: Recognized in connection with restructuring — — Recognized on previously restructured loans 1,533 — Certain borrowers are currently unable to meet their contractual payment obligations because of the adverse effects of COVID-19. To help mitigate these effects, loan customers may apply for a deferral of payments, or portions thereof, for up to 90 days. In the absence of other intervening factors, such short-term modifications made on a good faith basis are not categorized as troubled debt restructurings, nor are loans granted payment deferrals related to COVID-19 reported as past due or placed on non-accrual status (provided the loans were not past due or on non-accrual status prior to the deferral). Credit Quality Indicators. As part of the on-going monitoring of the credit quality of our loan portfolio, management tracks certain credit quality indicators including trends related to (i) the weighted-average risk grade of commercial loans, (ii) the level of classified commercial loans, (iii) the delinquency status of consumer loans (iv) non-performing loans (see details above) and (vi) the general economic conditions in the State of Texas. We utilize a risk grading matrix to assign a risk grade to each of our commercial loans. Loans are graded on a scale of 1 to 14. A description of the general characteristics of the 14 risk grades is set forth in our 2019 Form 10-K. We monitor portfolio credit quality by the weighted-average risk grade of each class of commercial loan. Individual relationship managers, under the oversight of credit administration, review updated financial information for all pass grade loans to reassess the risk grade on at least an annual basis. When a loan has a risk grade of 9, it is still considered a pass grade loan; however, it is considered to be on management’s “watch list,” where a significant risk-modifying action is anticipated in the near term. When a loan has a risk grade of 10 or higher, a special assets officer monitors the loan on an on-going basis. The following tables present weighted-average risk grades for all commercial loans by class and year of origination/renewal as of March 31, 2020 . 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total W/A Risk Grade Commercial and industrial Risk grades 1-8 $ 765,088 $ 813,141 $ 433,145 $ 333,114 $ 168,744 $ 143,770 $ 2,362,308 $ 47,080 $ 5,066,390 6.14 Risk grade 9 15,539 34,847 51,906 14,167 7,700 10,993 127,148 6,267 268,567 9.00 Risk grade 10 21,815 10,918 13,042 7,237 6,670 3,377 74,625 679 138,363 10.00 Risk grade 11 45 5,853 2,276 3,149 922 661 17,664 8,957 39,527 11.00 Risk grade 12 — 536 7,179 1,432 384 146 2,520 2,512 14,709 12.00 Risk grade 13 — 2,651 1,833 1,016 — — 2,081 1,623 9,204 13.00 $ 802,487 $ 867,946 $ 509,381 $ 360,115 $ 184,420 $ 158,947 $ 2,586,346 $ 67,118 $ 5,536,760 6.44 W/A Risk grade 5.75 6.69 7.12 6.18 6.24 6.10 6.46 7.89 6.44 Energy Risk grades 1-8 $ 585,655 $ 95,004 $ 22,101 $ 11,048 $ 3,187 $ 5,514 $ 665,347 $ 9,642 $ 1,397,498 6.33 Risk grade 9 215 2,105 999 587 — — 25,658 46 29,610 9.00 Risk grade 10 — 669 — — — 47 10,250 — 10,966 10.00 Risk grade 11 62,509 325 941 300 8 770 36,105 1,120 102,078 11.00 Risk grade 12 — — — — — — 3,035 25,667 28,702 12.00 Risk grade 13 — — — — — — — — — 13.00 $ 648,379 $ 98,103 $ 24,041 $ 11,935 $ 3,195 $ 6,331 $ 740,395 $ 36,475 $ 1,568,854 6.81 W/A Risk grade 6.89 7.21 7.25 7.34 6.60 7.48 6.48 10.69 6.81 Commercial real estate: Buildings, land, other Risk grades 1-8 $ 503,028 $ 1,080,494 $ 780,270 $ 745,352 $ 518,981 $ 909,275 $ 83,274 $ 59,064 $ 4,679,738 6.89 Risk grade 9 1,872 89,718 41,520 79,696 55,037 59,672 400 264 328,179 9.00 Risk grade 10 — 14,619 500 20,394 26,200 58,297 632 — 120,642 10.00 Risk grade 11 249 11,275 1,789 31,201 8,235 16,135 100 1,991 70,975 11.00 Risk grade 12 — 2,207 34 1,470 306 3,389 505 — 7,911 12.00 Risk grade 13 — — — — — 250 63 — 313 13.00 $ 505,149 $ 1,198,313 $ 824,113 $ 878,113 $ 608,759 $ 1,047,018 $ 84,974 $ 61,319 $ 5,207,758 7.16 W/A Risk grade 6.97 7.19 7.08 7.32 7.37 7.04 7.03 6.84 7.16 Construction Risk grades 1-8 $ 115,476 $ 374,393 $ 456,568 $ 105,160 $ 1,196 $ 17,193 $ 144,922 $ — $ 1,214,908 7.15 Risk grade 9 406 14,003 3,500 2,919 6,984 — 127 — 27,939 9.00 Risk grade 10 12,991 2,744 — 917 — — — — 16,652 10.00 Risk grade 11 1,192 — — — — 976 — — 2,168 11.00 Risk grade 12 — 683 — — — — — — 683 12.00 Risk grade 13 — 3,091 — — — — — — 3,091 13.00 $ 130,065 $ 394,914 $ 460,068 $ 108,996 $ 8,180 $ 18,169 $ 145,049 $ — $ 1,265,441 7.25 W/A Risk grade 7.59 7.24 7.24 7.54 8.71 6.31 6.84 — 7.25 Total commercial real estate $ 635,214 $ 1,593,227 $ 1,284,181 $ 987,109 $ 616,939 $ 1,065,187 $ 230,023 $ 61,319 $ 6,473,199 7.18 W/A Risk grade 7.10 7.21 7.14 7.35 7.38 7.02 6.91 6.84 7.18 In the table above, energy loans include $62.5 million related to 2020 originations/renewals that have a risk grade of 11. Of this amount, $50.9 million related to the renewal of a loan that was first originated in 2017 and $11.5 million related to the renewal of a loan that was first originated in 2016. The following tables present weighted average risk grades for all commercial loans by class as of December 31, 2019 . Commercial and Industrial Energy Commercial Real Estate - Buildings, Land and Other Commercial Real Estate - Construction Total Commercial Real Estate W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans Risk grades 1-8 6.17 $ 4,788,857 5.90 $ 1,488,301 6.78 $ 4,523,271 7.25 $ 1,274,098 6.88 $ 5,797,369 Risk grade 9 9.00 247,212 9.00 32,163 9.00 163,714 9.00 21,509 9.00 185,223 Risk grade 10 10.00 71,472 10.00 51,898 10.00 103,626 10.00 15,243 10.00 118,869 Risk grade 11 11.00 53,887 11.00 14,760 11.00 84,057 11.00 1,144 11.00 85,201 Risk grade 12 12.00 18,189 12.00 45,514 12.00 8,529 12.00 665 12.00 9,194 Risk grade 13 13.00 7,849 13.00 20,246 13.00 383 13.00 — 13.00 383 Total 6.44 $ 5,187,466 6.39 $ 1,652,882 7.01 $ 4,883,580 7.31 $ 1,312,659 7.07 $ 6,196,239 Information about the payment status of consumer loans, segregated by portfolio segment and year of origination, as of March 31, 2020 was as follows: 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Consumer real estate: Past due 30-89 days $ — $ 623 $ 771 $ 1,490 $ 763 $ 3,575 $ 1,206 $ 1,114 $ 9,542 Past due 90 or more days — — 512 108 386 1,000 1,224 — 3,230 Total past due — 623 1,283 1,598 1,149 4,575 2,430 1,114 12,772 Current loans 65,082 217,726 142,566 122,282 93,385 180,883 367,149 19,262 1,208,335 Total $ 65,082 $ 218,349 $ 143,849 $ 123,880 $ 94,534 $ 185,458 $ 369,579 $ 20,376 $ 1,221,107 Consumer and other: Past due 30-89 days $ 1,414 $ 801 $ 263 $ 151 $ 102 $ 23 $ 3,380 $ — $ 6,134 Past due 90 or more days — 902 — — — — 111 — 1,013 Total past due 1,414 1,703 263 151 102 23 3,491 — 7,147 Current loans 19,780 44,825 14,699 4,329 2,762 1,490 420,517 22,791 531,193 Total $ 21,194 $ 46,528 $ 14,962 $ 4,480 $ 2,864 $ 1,513 $ 424,008 $ 22,791 $ 538,340 Revolving loans that converted to term during the three months ended March 31, 2020 were as follows: Commercial and industrial $ 11,346 Energy 15,353 Commercial real estate: Buildings, land and other 7,639 Construction — Consumer real estate 1,071 Consumer and other — Total $ 35,409 In assessing the general economic conditions in the State of Texas, management monitors and tracks the Texas Leading Index (“TLI”), which is produced by the Federal Reserve Bank of Dallas. The TLI, the components of which are more fully described in our 2019 Form 10-K, totaled 111.8 at March 31, 2020 (most recent date available) and 127.9 at December 31, 2019 . A higher TLI value implies more favorable economic conditions. Allowance For Credit Losses - Loans. The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present the net amount expected to be collected. The amount of the allowance represents management's best estimate of current expected credit losses on loans considering available information, from internal and external sources, relevant to assessing collectibility over the loans' contractual terms, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless (i) management has a reasonable expectation that a trouble debt restructuring will be executed with an individual borrower or (ii) such extension or renewal options are not unconditionally cancellable by us and, in such cases, the borrower is likely to meet applicable conditions and likely to request extension or renewal. Relevant available information includes historical credit loss experience, current conditions and reasonable and supportable forecasts. While historical credit loss experience provides the basis for the estimation of expected credit losses, adjustments to historical loss information may be made for differences in current portfolio-specific risk characteristics, environmental conditions or other relevant factors. The allowance for credit losses is measured on a collective basis for portfolios of loans when similar risk characteristics exist. Loans that do not share risk characteristics are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Expected credit losses for collateral dependent loans, including loans where the borrower is experiencing financial difficulty but foreclosure is not probable, are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. Credit loss expense related to loans reflects the totality of actions taken on all loans for a particular period including any necessary increases or decreases in the allowance related to changes in credit loss expectations associated with specific loans or pools of loans. Portions of the allowance may be allocated for specific credits; however, the entire allowance is available for any credit that, in management’s judgment, should be charged off. While management utilizes its best judgment and information available, the ultimate appropriateness of the allowance is dependent upon a variety of factors beyond our control, including the performance of our loan portfolio, the economy, changes in interest rates and the view of the regulatory authorities toward loan classifications. In calculating the allowance for credit losses, most loans are segmented into pools based upon similar characteristics and risk profiles. Common characteristics and risk profiles include the type/purpose of loan, underlying collateral, geographical similarity and historical/expected credit loss patterns. In developing these loan pools for the purposes of modeling expected credit losses, we also analyzed the degree of correlation in how loans within each portfolio respond when subjected to varying economic conditions and scenarios as well as other portfolio stress factors. For modeling purposes, our loan pools include (i) commercial and industrial and energy - non-revolving, (ii) commercial and industrial and energy - revolving, (iii) commercial real estate - owner occupied, (iv) commercial real estate - non-owner occupied, (v) commercial real estate - construction/land development, (vi) consumer real estate and (vii) consumer and other. We periodically reassess each pool to ensure the loans within the pool continue to share similar characteristics and risk profiles and to determine whether further segmentation is necessary. For each loan pool, we measure expected credit losses over the life of each loan utilizing a combination of models which measure (i) probability of default (“PD”), which is the likelihood that loan will stop performing/default, (ii) probability of attrition (“PA”), which is the likelihood that a loan will pay-off prior to maturity, (iii) loss given default (“LGD”), which is the expected loss rate for loans in default and (iv) exposure at default (“EAD”), which is the estimated outstanding principal balance of the loans upon default, including the expected funding of unfunded commitments outstanding as of the measurement date. For certain commercial loan portfolios, the PD is calculated using a transition matrix to determine the likelihood of a customer’s risk grade migrating from one specified range of risk grades to a different specified range. Expected credit losses are calculated as the product of PD (adjusted for attrition), LGD and EAD. This methodology builds on default probabilities already incorporated into our risk grading process by utilizing pool-specific historical loss rates to calculate expected credit losses. These pool-specific historical loss rates may be adjusted for current macroeconomic assumptions, as further discussed below, and other factors such as differences in underwriting standards, portfolio mix, or when historical asset terms do not reflect the contractual terms of the financial assets being evaluated as of the measurement date. Each time we measure expected credit losses, we assess the relevancy of historical loss information and consider any necessary adjustments to address any differences in asset-specific characteristics. Due to their short-term nature, expected credit losses for overdrafts included in consumer and other loans are based solely upon a weighting of recent historical charge-offs over a period of three years. The measurement of expected credit losses is impacted by loan/borrower attributes and certain macroeconomic variables. Significant loan/borrower attributes utilized in our modeling processes include, among other things, (i) origination date, (ii) maturity date, (iii) payment type, (iv) collateral type and amount, (v) current risk grade, (vi) current unpaid balance and commitment utilization rate, (vii) payment status/delinquency history and (viii) expected recoveries of previously charged-off amounts. Significant macroeconomic variables utilized in our modeling processes include, among other things, (i) Gross State Product for Texas and U.S. Gross Domestic Product, (ii) selected market interest rates including U.S. Treasury rates, bank prime rate, 30-year fixed mortgage rate, BBB corporate bond rate, among others, (iii) unemployment rates, (iv) commercial and residential property prices in Texas and the U.S. as a whole, (v) West Texas Intermediate crude oil price and (vi) total stock market index. PD and PA were estimated by analyzing internally-sourced data related to historical performance of each loan pool over a complete economic cycle. PD and PA are adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a reasonable and supportable forecast period. We have determined that we are reasonably able to forecast the macroeconomic variables used in our modeling processes with an acceptable degree of confidence for a total of two years with the last twelve months of the forecast period encompassing a reversion process whereby the forecasted macroeconomic variables are reverted to their historical mean utilizing a rational, systematic basis. The macroeconomic variables utilized as inputs in our modeling processes were subjected to a variety of analysis procedures and were selected primarily based on statistical relevancy and correlation to our historical credit losses. By reverting these modeling inputs to their historical mean and considering loan/borrower specific attributes, our models will yield a measurement of expected credit losses that reflects our average historical loss rates for periods subsequent to the twelve-month reversion period. The LGD is based on historical recovery averages for each loan pool, adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a two-year forecast period, with the final twelve months of the forecast period encompassing a reversion process, which management considers to be both reasonable and supportable. This same forecast/reversion period is used for all macroeconomic variables used in all of our models. EAD is estimated using a linear regression model that estimates the average percentage of the loan balance that remains at the time of a default event. Management qualitatively adjusts model results for risk factors that are not considered within our modeling processes but are nonetheless relevant in assessing the expected credit losses within our loan pools. These qualitative factor (“Q-Factor”) adjustments may increase or decrease management's estimate of expected credit losses by a calculated percentage or amount based upon the estimated level of risk. The various risks that may be considered in making Q-Factor adjustments include, among other things, the impact of (i) changes in lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries, (ii) actual and expected changes in international, national, regional, and local economic and business conditions and developments that affect the collectibility of the loan pools, (iii) changes in the nature and volume of the loan pools and in the terms of the underlying loans, (iv) changes in the experience, ability, and depth of our lending management and staff, (v) changes in volume and severity of past due financial assets, the volume of non-accrual assets, and the volume and severity of adversely classified or graded assets, (vi) changes in the quality of our credit review function, (vii) changes in the value of the underlying collateral for loans that are non-collateral dependent, (viii) the existence, growth, and effect of any concentrations of credit and (ix) other external factors such as the regulatory, legal and technological environments; competition; and events such as natural disasters or health pandemics. In some cases, management may determine that an individual loan exhibits unique risk characteristics which differentiate the loan from other loans within our loan pools. In such cases, the loans are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Specific allocations of the allowance for credit losses are determined by analyzing the borrower’s ability to repay amounts owed, collateral deficiencies, the relative risk grade of the loan and economic conditions affecting the borrower’s industry, among other things. A loan is considered to be collateral dependent when, based upon management's assessment, the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In such cases, expected credit losses are based on the fair value of the collateral at the measurement date, adjusted for estimated selling costs if satisfaction of the loan depends on the sale of the collateral. We reevaluate the fair value of collateral supporting collateral dependent loans on a quarterly basis. The fair value of real estate collateral supporting collateral dependent loans is evaluated by our internal appraisal services using a methodology that is consistent with the Uniform Standards of Professional Appraisal Practice. The fair value of collateral supporting collateral dependent construction loans is based on an “as is” valuation. The following table presents details of the allowance for credit losses on loans segregated by loan portfolio segment as of March 31, 2020 , calculated in accordance with the CECL methodology described above. Commercial and Industrial Energy Commercial Real Estate Consumer Real Estate Consumer and Other Total Modeled expected credit losses $ 69,446 $ 15,425 $ 34,941 $ 6,974 $ 6,950 $ 133,736 Q-Factor adjustments 13,501 87,776 13,974 1,196 1,070 117,517 Specific allocations 9,205 — 3,404 — 19 12,628 Total $ 92,152 $ 103,201 $ 52,319 $ 8,170 $ 8,039 $ 263,881 The following table presents details of the allowance for credit losses on loans segregated by loan portfolio segment as of December 31, 2019 , calculated in accordance with our prior incurred loss methodology described in our 2019 Form 10-K. Commercial and Industrial Energy Commercial Real Estate Consumer Real Estate Consumer and Other Total December 31, 2019 Historical valuation allowances $ 29,015 $ 7,873 $ 21,947 $ 2,690 $ 7,562 $ 69,087 Specific valuation allowances 7,849 20,246 383 — 5 28,483 General valuation allowances 9,840 5,196 4,201 904 (409 ) 19,732 Macroeconomic valuation allowances 4,889 4,067 4,506 519 884 14,865 Total $ 51,593 $ 37,382 $ 31,037 $ 4,113 $ 8,042 $ 132,167 The following table details activity in the allowance for credit losses on loans by portfolio segment for the three months ended March 31, 2020 and 2019 . Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. Commercial and Industrial Energy Commercial Real Estate Consumer Real Estate Consumer and Other Total March 31, 2020 Beginning balance $ 51,593 $ 37,382 $ 31,037 $ 4,113 $ 8,042 $ 132,167 Impact of adopting ASC 326 21,263 (10,453 ) (13,519 ) 2,392 (2,248 ) (2,565 ) Credit loss expense 21,950 110,006 34,761 1,570 4,638 172,925 Charge-offs (4,369 ) (33,800 ) (73 ) (285 ) (5,005 ) (43,532 ) Recoveries 1,715 66 113 380 2,612 4,886 Net charge-offs (2,654 ) (33,734 ) 40 95 (2,393 ) (38,646 ) Ending balance $ 92,152 $ 103,201 $ 52,319 $ 8,170 $ 8,039 $ 263,881 March 31, 2019 Beginning balance $ 48,580 $ 29,052 $ 38,777 $ 6,103 $ 9,620 $ 132,132 Credit loss expense 11,929 (3,756 ) (2,352 ) 1,247 3,935 11,003 Charge-offs (2,688 ) — (60 ) (1,778 ) (5,697 ) (10,223 ) Recoveries 750 47 90 89 2,462 3,438 Net charge-offs (1,938 ) 47 30 (1,689 ) (3,235 ) (6,785 ) Ending balance $ 58,571 $ 25,343 $ 36,455 $ 5,661 $ 10,320 $ 136,350 The following table presents loans that were evaluated for expected credit losses on an individual basis and the related specific allocations, by loan portfolio segment as of March 31, 2020 and December 31, 2019 . March 31, 2020 December 31, 2019 Loan Balance Specific Allocations Loan Balance Specific Allocations Commercial and industrial $ 21,925 $ 9,205 $ 24,360 $ 7,849 Energy 28,330 — 65,244 20,246 Commercial real estate 11,669 3,404 9,274 383 Consumer real estate 1,423 — 570 — Consumer and other 20 19 5 5 Total $ 63,367 $ 12,628 $ 99,453 $ 28,483 |
Goodwill and Other Intangible A
Goodwill and Other Intangible Assets | 3 Months Ended |
Mar. 31, 2020 | |
Goodwill and Intangible Assets Disclosure [Abstract] | |
Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets Goodwill and other intangible assets are presented in the table below. As of March 31, 2020 , we evaluated recent potential triggering events that might be indicators that our goodwill was impaired. The events include the economic disruption and uncertainty surrounding the COVID-19 pandemic and the circumstances surrounding recent volatility in the market price of crude oil. Based on our evaluation, we concluded that our goodwill was not more than likely impaired as of that date. March 31, December 31, Goodwill $ 654,952 $ 654,952 Other intangible assets: Core deposits $ 1,832 $ 2,043 Customer relationships 392 438 $ 2,224 $ 2,481 The estimated aggregate future amortization expense for intangible assets remaining as of March 31, 2020 is as follows: Remainder of 2020 $ 661 2021 697 2022 481 2023 282 2024 87 Thereafter 16 $ 2,224 |
Deposits
Deposits | 3 Months Ended |
Mar. 31, 2020 | |
Banking and Thrift [Abstract] | |
Deposits | Deposits Deposits were as follows: March 31, Percentage of Total December 31, Percentage of Total Non-interest-bearing demand deposits: Commercial and individual $ 10,524,338 37.4 % $ 10,212,265 36.9 % Correspondent banks 221,761 0.8 246,181 0.9 Public funds 456,109 1.6 415,183 1.5 Total non-interest-bearing demand deposits 11,202,208 39.8 10,873,629 39.3 Interest-bearing deposits: Private accounts: Savings and interest checking 7,240,821 25.7 7,147,327 25.9 Money market accounts 7,995,061 28.4 7,888,433 28.5 Time accounts of $100,000 or more 773,373 2.8 736,481 2.7 Time accounts under $100,000 347,349 1.2 347,418 1.2 Total private accounts 16,356,604 58.1 16,119,659 58.3 Public funds: Savings and interest checking 479,629 1.7 548,399 2.0 Money market accounts 78,899 0.3 73,180 0.3 Time accounts of $100,000 or more 23,502 0.1 24,672 0.1 Time accounts under $100,000 25 — 25 — Total public funds 582,055 2.1 646,276 2.4 Total interest-bearing deposits 16,938,659 60.2 16,765,935 60.7 Total deposits $ 28,140,867 100.0 % $ 27,639,564 100.0 % The following table presents additional information about our deposits: March 31, December 31, Deposits from the Certificate of Deposit Account Registry Service (CDARS) deposits $ 364 $ 361 Deposits from foreign sources (primarily Mexico) 787,331 805,828 Deposits not covered by deposit insurance 13,592,104 13,115,796 |
Commitments and Contingencies
Commitments and Contingencies | 3 Months Ended |
Mar. 31, 2020 | |
Commitments and Contingencies Disclosure [Abstract] | |
Commitments and Contingencies | Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies Financial Instruments with Off-Balance-Sheet Risk . In the normal course of business, we enter into various transactions, which, in accordance with generally accepted accounting principles are not included in our consolidated balance sheets. We enter into these transactions to meet the financing needs of our customers. As more fully discussed in our 2019 Form 10-K, these transactions include commitments to extend credit and standby letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. We minimize our exposure to loss under these commitments by subjecting them to credit approval and monitoring procedures. Financial instruments with off-balance-sheet risk were as follows: March 31, December 31, Commitments to extend credit $ 9,204,873 $ 9,306,043 Standby letters of credit 268,202 260,587 Deferred standby letter of credit fees 1,773 1,276 Allowance For Credit Losses - Off-Balance-Sheet Credit Exposures. The allowance for credit losses on off-balance-sheet credit exposures is a liability account, calculated in accordance with ASC 326, representing expected credit losses over the contractual period for which we are exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if we have the unconditional right to cancel the obligation. Off-balance-sheet credit exposures primarily consist of amounts available under outstanding lines of credit and letters of credit detailed in the table above. For the period of exposure, the estimate of expected credit losses considers both the likelihood that funding will occur and the amount expected to be funded over the estimated remaining life of the commitment or other off-balance-sheet exposure. The likelihood and expected amount of funding are based on historical utilization rates. The amount of the allowance represents management's best estimate of expected credit losses on commitments expected to be funded over the contractual life of the commitment. Estimating credit losses on amounts expected to be funded uses the same methodology as described for loans in Note 3 - Loans as if such commitments were funded. The following table details activity in the allowance for credit losses on off-balance-sheet commitments. Three Months Ended 2020 2019 Beginning balance, prior to adoption of ASC 326 $ 500 $ 500 Impact of adopting ASC 326 39,377 — Credit loss expense 2,287 — Ending balance $ 42,164 $ 500 Lease Commitments . We lease certain office facilities and office equipment under operating leases. The components of total lease expense were as follows: Three Months Ended 2020 2019 Amortization of lease right-of-use assets $ 7,874 $ 5,796 Short-term lease expense 561 1,079 Non-lease components (including taxes, insurance, common maintenance, etc.) 2,927 1,733 Total $ 11,362 $ 8,608 Right-of-use lease assets totaled $302.0 million at March 31, 2020 and $297.7 million at December 31, 2019 and are reported as a component of premises and equipment on our accompanying consolidated balance sheets. The related lease liabilities totaled $331.5 million at March 31, 2020 and $323.7 million at December 31, 2019 and are reported as a component of accrued interest payable and other liabilities in the accompanying consolidated balance sheets. Lease payments under operating leases that were applied to our operating lease liability totaled $7.7 million and $6.0 million during the three months March 31, 2020 and 2019 , respectively. There has been no significant change in our expected future minimum lease payments since December 31, 2019 . See the 2019 Form 10-K for information regarding these commitments. Litigation. We are subject to various claims and legal actions that have arisen in the course of conducting business. Management does not expect the ultimate disposition of these matters to have a material adverse impact on our financial statements. |
Capital and Regulatory Matters
Capital and Regulatory Matters | 3 Months Ended |
Mar. 31, 2020 | |
Banking and Thrift [Abstract] | |
Capital and Regulatory Matters | Capital and Regulatory Matters Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weighting and other factors. Cullen/Frost’s and Frost Bank’s Common Equity Tier 1 capital includes common stock and related paid-in capital, net of treasury stock, and retained earnings. In connection with the adoption of the Basel III Capital Rules, we elected to opt-out of the requirement to include most components of accumulated other comprehensive income in Common Equity Tier 1. We also elected to exclude, for a five-year transitional period, the effects of credit loss accounting under CECL from Common Equity Tier 1, as further discussed below. Common Equity Tier 1 for both Cullen/Frost and Frost Bank is reduced by goodwill and other intangible assets, net of associated deferred tax liabilities. Frost Bank's Common Equity Tier 1 is also reduced by its equity investment in its financial subsidiary, Frost Insurance Agency (“FIA”). Tier 1 capital includes Common Equity Tier 1 capital and additional Tier 1 capital. Cullen/Frost and Frost Bank did not have any additional Tier 1 capital beyond Common Equity Tier 1 at March 31, 2020 . For Cullen/Frost, additional Tier 1 capital at December 31, 2019 included $144.5 million of 5.375% non-cumulative perpetual preferred stock. This preferred stock was redeemed during the first quarter of 2020 , as further discussed below. Frost Bank did not have any additional Tier 1 capital beyond Common Equity Tier 1 at December 31, 2019 . Total capital includes Tier 1 capital and Tier 2 capital. Tier 2 capital for both Cullen/Frost and Frost Bank includes a permissible portion of the allowances for credit losses on securities, loans and off-balance-sheet credit exposures. Tier 2 capital for Cullen/Frost also includes $100.0 million of qualified subordinated debt and $133.0 million of trust preferred securities at both March 31, 2020 and December 31, 2019 . As discussed in Note 1 - Significant Accounting Policies, in connection with the adoption of ASC 326, we recognized an after-tax cumulative effect reduction to retained earnings totaling $29.3 million . In February 2019, the federal bank regulatory agencies issued a final rule (the “2019 CECL Rule”) that revised certain capital regulations to account for changes to credit loss accounting under U.S. GAAP. The 2019 CECL Rule included a transition option that allows banking organizations to phase in, over a three-year period, the day-one adverse effects of CECL on their regulatory capital ratios (three-year transition option). In March 2020, the federal bank regulatory agencies issued an interim final rule that maintains the three-year transition option of the 2019 CECL Rule and also provides banking organizations that were required under U.S. GAAP (as of January 2020) to implement CECL before the end of 2020 the option to delay for two years an estimate of the effect of CECL on regulatory capital, relative to the incurred loss methodology’s effect on regulatory capital, followed by a three-year transition period (five-year transition option). We elected to adopt the five-year transition option. Accordingly, a CECL transitional amount totaling $63.4 million has been added back to CET1 as of March 31, 2020 . The CECL transitional amount includes $29.3 million related to cumulative effect of adopting CECL and $34.1 million related to the estimated incremental effect of CECL during the three months ended March 31, 2020 . The following tables present actual and required capital ratios as of March 31, 2020 and December 31, 2019 for Cullen/Frost and Frost Bank under the Basel III Capital Rules. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. See the 2019 Form 10-K for a more detailed discussion of the Basel III Capital Rules. After a review of risk-weight classifications during the first quarter of 2019, risk-weightings for certain loans were reclassified. Amounts reported as of December 31, 2019 have been revised to reflect these reclassifications. Actual Minimum Capital Required - Basel III Required to be Capital Ratio Capital Ratio Capital Ratio March 31, 2020 Common Equity Tier 1 to Risk-Weighted Assets Cullen/Frost $ 2,884,385 12.02 % $ 1,679,810 7.00 % $ 1,559,824 6.50 % Frost Bank 2,924,082 12.21 1,676,269 7.00 1,556,535 6.50 Tier 1 Capital to Risk-Weighted Assets Cullen/Frost 2,884,385 12.02 2,039,770 8.50 1,919,783 8.00 Frost Bank 2,924,082 12.21 2,035,469 8.50 1,915,736 8.00 Total Capital to Risk-Weighted Assets Cullen/Frost 3,352,464 13.97 2,519,715 10.50 2,399,729 10.00 Frost Bank 3,159,161 13.19 2,514,403 10.50 2,394,670 10.00 Leverage Ratio Cullen/Frost 2,884,385 8.84 1,305,429 4.00 1,631,786 5.00 Frost Bank 2,924,082 8.97 1,304,257 4.00 1,630,322 5.00 December 31, 2019 Common Equity Tier 1 to Risk-Weighted Assets Cullen/Frost $ 2,857,250 12.36 % $ 1,617,886 7.00 % $ 1,502,323 6.50 % Frost Bank 2,958,326 12.82 1,615,206 7.00 1,499,834 6.50 Tier 1 Capital to Risk-Weighted Assets Cullen/Frost 3,001,736 12.99 1,964,576 8.50 1,849,013 8.00 Frost Bank 2,958,326 12.82 1,961,322 8.50 1,845,950 8.00 Total Capital to Risk-Weighted Assets Cullen/Frost 3,367,403 14.57 2,426,829 10.50 2,311,266 10.00 Frost Bank 3,090,993 13.40 2,422,809 10.50 2,307,438 10.00 Leverage Ratio Cullen/Frost 3,001,736 9.28 1,293,188 4.00 1,616,485 5.00 Frost Bank 2,958,326 9.15 1,292,743 4.00 1,615,929 5.00 As of March 31, 2020 , capital levels at Cullen/Frost and Frost Bank exceed all capital adequacy requirements under the fully phased-in Basel III Capital Rules. Based on the ratios presented above, capital levels as of March 31, 2020 at Cullen/Frost and Frost Bank exceed the minimum levels necessary to be considered “well capitalized.” Cullen/Frost and Frost Bank are subject to the regulatory capital requirements administered by the Federal Reserve Board and, for Frost Bank, the Federal Deposit Insurance Corporation (“FDIC”). Regulatory authorities can initiate certain mandatory actions if Cullen/Frost or Frost Bank fail to meet the minimum capital requirements, which could have a direct material effect on our financial statements. Management believes, as of March 31, 2020 , that Cullen/Frost and Frost Bank meet all capital adequacy requirements to which they are subject. Preferred Stock. On March 16, 2020 , we redeemed all 6,000,000 shares of our 5.375% Non-Cumulative Perpetual Preferred Stock, Series A, (“Series A Preferred Stock”) at a redemption price of $25 per share, or an aggregate redemption of $150.0 million . When issued, the net proceeds of the Series A Preferred Stock totaled $144.5 million after deducting $5.5 million of issuance costs including the underwriting discount and professional service fees, among other things. Upon redemption, these issuance costs were reclassified to retained earnings and reported as a reduction of net income available to common shareholders. Stock Repurchase Plans. From time to time, our board of directors has authorized stock repurchase plans. In general, stock repurchase plans allow us to proactively manage our capital position and return excess capital to shareholders. Shares purchased under such plans also provide us with shares of common stock necessary to satisfy obligations related to stock compensation awards. On July 24, 2019 , our board of directors authorized a $100.0 million stock repurchase program, allowing us to repurchase shares of our common stock over a one -year period from time to time at various prices in the open market or through private transactions. Under this plan, we repurchased 177,834 shares at a total cost of $13.7 million during the first quarter of 2020 and 202,724 shares at a total cost of $17.2 million during the third quarter of 2019 . Under the Basel III Capital Rules, Cullen/Frost may not repurchase or redeem any of its subordinated notes and, in some cases, its common stock without the prior approval of the Federal Reserve Board. Dividend Restrictions . In the ordinary course of business, Cullen/Frost is dependent upon dividends from Frost Bank to provide funds for the payment of dividends to shareholders and to provide for other cash requirements, including to repurchase its common stock. Banking regulations may limit the amount of dividends that may be paid. Approval by regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of Frost Bank to fall below specified minimum levels. Approval is also required if dividends declared exceed the net profits for that year combined with the retained net profits for the preceding two years. Under the foregoing dividend restrictions and while maintaining its “well capitalized” status, at March 31, 2020 , Frost Bank could pay aggregate dividends of up to $395.9 million to Cullen/Frost without prior regulatory approval. Under the terms of the junior subordinated deferrable interest debentures that Cullen/Frost has issued to Cullen/Frost Capital Trust II and WNB Capital Trust I, Cullen/Frost has the right at any time during the term of the debentures to defer the payment of interest at any time or from time to time for an extension period not exceeding 20 consecutive quarterly periods with respect to each extension period. In the event that we have elected to defer interest on the debentures, we may not, with certain exceptions, declare or pay any dividends or distributions on our capital stock or purchase or acquire any of our capital stock. |
Derivative Financial Instrument
Derivative Financial Instruments | 3 Months Ended |
Mar. 31, 2020 | |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
Derivative Financial Instruments | Derivative Financial Instruments The fair value of derivative positions outstanding is included in accrued interest receivable and other assets and accrued interest payable and other liabilities in the accompanying consolidated balance sheets and in the net change in each of these financial statement line items in the accompanying consolidated statements of cash flows. Interest Rate Derivatives. We utilize interest rate swaps, caps and floors to mitigate exposure to interest rate risk and to facilitate the needs of our customers. Our objectives for utilizing these derivative instruments are described in our 2019 Form 10-K. The notional amounts and estimated fair values of interest rate derivative contracts are presented in the following table. The fair values of interest rate derivative contracts are estimated utilizing internal valuation models with observable market data inputs, or as determined by the Chicago Mercantile Exchange (“CME”) for centrally cleared derivative contracts. CME rules legally characterize variation margin payments for centrally cleared derivatives as settlements of the derivatives' exposure rather than collateral. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. Variation margin, as determined by the CME, is settled daily. As a result, derivative contracts that clear through the CME have an estimated fair value of zero as of March 31, 2020 and December 31, 2019 . March 31, 2020 December 31, 2019 Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Derivatives designated as hedges of fair value: Financial institution counterparties: Loan/lease interest rate swaps – assets $ — $ — $ 2,545 $ 6 Loan/lease interest rate swaps – liabilities 4,732 (219 ) 6,000 (138 ) Non-hedging interest rate derivatives: Financial institution counterparties: Loan/lease interest rate swaps – assets — — 122,788 67 Loan/lease interest rate swaps – liabilities 1,191,926 (37,403 ) 1,002,860 (19,483 ) Loan/lease interest rate caps – assets 155,597 682 107,835 266 Customer counterparties: Loan/lease interest rate swaps – assets 1,191,926 97,232 1,002,860 43,857 Loan/lease interest rate swaps – liabilities — — 122,788 (310 ) Loan/lease interest rate caps – liabilities 155,597 (682 ) 107,835 (266 ) The weighted-average rates paid and received for interest rate swaps outstanding at March 31, 2020 were as follows: Weighted-Average Interest Rate Paid Interest Rate Received Interest rate swaps: Fair value hedge loan/lease interest rate swaps 3.54 % 1.26 % Non-hedging interest rate swaps – financial institution counterparties 4.05 2.93 Non-hedging interest rate swaps – customer counterparties 2.93 4.05 The weighted-average strike rate for outstanding interest rate caps was 2.86% at March 31, 2020 . Commodity Derivatives. We enter into commodity swaps and option contracts that are not designated as hedging instruments primarily to accommodate the business needs of our customers. Upon the origination of a commodity swap or option contract with a customer, we simultaneously enter into an offsetting contract with a third party financial institution to mitigate the exposure to fluctuations in commodity prices. The notional amounts and estimated fair values of non-hedging commodity swap and option derivative positions outstanding are presented in the following table. We obtain dealer quotations and use internal valuation models with observable market data inputs to value our commodity derivative positions. March 31, 2020 December 31, 2019 Notional Units Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Financial institution counterparties: Oil – assets Barrels 2,639 $ 61,479 1,214 $ 2,796 Oil – liabilities Barrels 576 (634 ) 2,148 (6,916 ) Natural gas – assets MMBTUs 5,807 2,455 8,295 2,131 Natural gas – liabilities MMBTUs 4,313 (346 ) 2,689 (70 ) Customer counterparties: Oil – assets Barrels 576 645 2,172 7,208 Oil – liabilities Barrels 2,639 (61,087 ) 1,190 (2,652 ) Natural gas – assets MMBTUs 4,313 397 2,689 83 Natural gas – liabilities MMBTUs 5,807 (2,392 ) 8,295 (2,039 ) Foreign Currency Derivatives . We enter into foreign currency forward contracts that are not designated as hedging instruments primarily to accommodate the business needs of our customers. Upon the origination of a foreign currency denominated transaction with a customer, we simultaneously enter into an offsetting contract with a third party financial institution to negate the exposure to fluctuations in foreign currency exchange rates. We also utilize foreign currency forward contracts that are not designated as hedging instruments to mitigate the economic effect of fluctuations in foreign currency exchange rates on foreign currency holdings and certain short-term, non-U.S. dollar denominated loans. The notional amounts and fair values of open foreign currency forward contracts were as follows: March 31, 2020 December 31, 2019 Notional Currency Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Financial institution counterparties: Forward contracts – liabilities CAD 2,821 $ (16 ) 4,593 $ (33 ) Customer counterparties: Forward contracts – assets CAD 2,814 24 4,583 45 Gains, Losses and Derivative Cash Flows . For fair value hedges, the changes in the fair value of both the derivative hedging instrument and the hedged item are included in other non-interest income or other non-interest expense. The extent that such changes in fair value do not offset represents hedge ineffectiveness. Net cash flows from interest rate swaps on commercial loans/leases designated as hedging instruments in effective hedges of fair value are included in interest income on loans. For non-hedging derivative instruments, gains and losses due to changes in fair value and all cash flows are included in other non-interest income and other non-interest expense. Amounts included in the consolidated statements of income related to interest rate derivatives designated as hedges of fair value were as follows: Three Months Ended 2020 2019 Commercial loan/lease interest rate swaps: Amount of gain (loss) included in interest income on loans $ (8 ) $ 26 Amount of (gain) loss included in other non-interest expense 1 — As stated above, we enter into non-hedge related derivative positions primarily to accommodate the business needs of our customers. Upon the origination of a derivative contract with a customer, we simultaneously enter into an offsetting derivative contract with a third party financial institution. We recognize immediate income based upon the difference in the bid/ask spread of the underlying transactions with our customers and the third party. Because we act only as an intermediary for our customer, subsequent changes in the fair value of the underlying derivative contracts for the most part offset each other and do not significantly impact our results of operations. During the three months ended March 31, 2020 , we sold certain non-hedge related, short-term put options on U.S. Treasury securities with an aggregate notional amount of $500 million and realized gains totaling approximately $6.0 million in connection with the sales. The put options were not exercised and expired in March 2020. Amounts included in the consolidated statements of income related to non-hedge related derivative instruments are presented in the table below. Three Months Ended 2020 2019 Non-hedging interest rate derivatives: Other non-interest income $ 2,039 $ 586 Other non-interest expense — — Non-hedging commodity derivatives: Other non-interest income 139 103 Non-hedging foreign currency derivatives: Other non-interest income 7 17 Non-hedging put options: Other non-interest income 5,980 — Counterparty Credit Risk. Our credit exposure relating to interest rate swaps, commodity swaps/options and foreign currency forward contracts with bank customers was approximately $96.8 million at March 31, 2020 . This credit exposure is partly mitigated as transactions with customers are generally secured by the collateral, if any, securing the underlying transaction being hedged. Our credit exposure, net of collateral pledged, relating to interest rate swaps, commodity swaps/options and foreign currency forward contracts with upstream financial institution counterparties was approximately $22.6 million at March 31, 2020 . This amount was primarily related to initial margin payments to the CME and excess collateral we posted to counterparties. Collateral levels for upstream financial institution counterparties are monitored and adjusted as necessary. See Note 9 – Balance Sheet Offsetting and Repurchase Agreements for additional information regarding our credit exposure with upstream financial institution counterparties. At March 31, 2020 , we had $41.6 million in cash collateral related to derivative contracts on deposit with other financial institution counterparties. |
Balance Sheet Offsetting
Balance Sheet Offsetting | 3 Months Ended |
Mar. 31, 2020 | |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
Balance Sheet Offsetting | Balance Sheet Offsetting and Repurchase Agreements Balance Sheet Offsetting. Certain financial instruments, including resell and repurchase agreements and derivatives, may be eligible for offset in the consolidated balance sheet and/or subject to master netting arrangements or similar agreements. Our derivative transactions with upstream financial institution counterparties are generally executed under International Swaps and Derivative Association (“ISDA”) master agreements which include “right of set-off” provisions. In such cases there is generally a legally enforceable right to offset recognized amounts and there may be an intention to settle such amounts on a net basis. Nonetheless, we do not generally offset such financial instruments for financial reporting purposes. Information about financial instruments that are eligible for offset in the consolidated balance sheet as of March 31, 2020 is presented in the following tables. Gross Amount Recognized Gross Amount Offset Net Amount Recognized March 31, 2020 Financial assets: Derivatives: Loan/lease interest rate swaps and caps $ 682 $ — $ 682 Commodity swaps and options 63,934 — 63,934 Foreign currency forward contracts — — — Total derivatives 64,616 — 64,616 Resell agreements 20,000 — 20,000 Total $ 84,616 $ — $ 84,616 Financial liabilities: Derivatives: Loan/lease interest rate swaps $ 37,622 $ — $ 37,622 Commodity swaps and options 980 — 980 Foreign currency forward contracts 16 — 16 Total derivatives 38,618 — 38,618 Repurchase agreements 1,146,478 — 1,146,478 Total $ 1,185,096 $ — $ 1,185,096 Gross Amounts Not Offset Net Amount Recognized Financial Instruments Collateral Net Amount March 31, 2020 Financial assets: Derivatives: Counterparty A $ 10 $ (10 ) $ — $ — Counterparty B 10,483 (10,483 ) — — Other counterparties 54,123 (8,728 ) (45,090 ) 305 Total derivatives 64,616 (19,221 ) (45,090 ) 305 Resell agreements 20,000 — (20,000 ) — Total $ 84,616 $ (19,221 ) $ (65,090 ) $ 305 Financial liabilities: Derivatives: Counterparty A $ 7,606 $ (10 ) $ (7,580 ) $ 16 Counterparty B 11,111 (10,483 ) (580 ) 48 Counterparty C 146 — (146 ) — Other counterparties 19,755 (8,728 ) (11,027 ) — Total derivatives 38,618 (19,221 ) (19,333 ) 64 Repurchase agreements 1,146,478 — (1,146,478 ) — Total $ 1,185,096 $ (19,221 ) $ (1,165,811 ) $ 64 Information about financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2019 is presented in the following tables. Gross Amount Recognized Gross Amount Offset Net Amount Recognized December 31, 2019 Financial assets: Derivatives: Loan/lease interest rate swaps and caps $ 339 $ — $ 339 Commodity swaps and options 4,927 — 4,927 Total derivatives 5,266 — 5,266 Resell agreements 31,299 — 31,299 Total $ 36,565 $ — $ 36,565 Financial liabilities: Derivatives: Loan/lease interest rate swaps $ 19,621 $ — $ 19,621 Commodity swaps and options 6,986 — 6,986 Foreign currency forward contracts 33 — 33 Total derivatives 26,640 — 26,640 Repurchase agreements 1,668,142 — 1,668,142 Total $ 1,694,782 $ — $ 1,694,782 Gross Amounts Not Offset Net Amount Recognized Financial Instruments Collateral Net Amount December 31, 2019 Financial assets: Derivatives: Counterparty A $ 39 $ (39 ) $ — $ — Counterparty B 1,650 (1,650 ) — — Counterparty C 1 (1 ) — — Other counterparties 3,576 (3,546 ) — 30 Total derivatives 5,266 (5,236 ) — 30 Resell agreements 31,299 — (31,299 ) — Total $ 36,565 $ (5,236 ) $ (31,299 ) $ 30 Financial liabilities: Derivatives: Counterparty A $ 5,192 $ (39 ) $ (5,153 ) $ — Counterparty B 7,424 (1,650 ) (5,774 ) — Counterparty C 135 (1 ) (134 ) — Other counterparties 13,889 (3,546 ) (10,343 ) — Total derivatives 26,640 (5,236 ) (21,404 ) — Repurchase agreements 1,668,142 — (1,668,142 ) — Total $ 1,694,782 $ (5,236 ) $ (1,689,546 ) $ — Repurchase Agreements. We utilize securities sold under agreements to repurchase to facilitate the needs of our customers and to facilitate secured short-term funding needs. Securities sold under agreements to repurchase are stated at the amount of cash received in connection with the transaction. We monitor collateral levels on a continuous basis. We 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 our safekeeping agents. The remaining contractual maturity of repurchase agreements in the consolidated balance sheets as of March 31, 2020 and December 31, 2019 is presented in the following tables. Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater than 90 Days Total March 31, 2020 Repurchase agreements: Residential mortgage-backed securities $ 1,146,478 $ — $ — $ — $ 1,146,478 Total borrowings $ 1,146,478 $ — $ — $ — $ 1,146,478 Gross amount of recognized liabilities for repurchase agreements $ 1,146,478 Amounts related to agreements not included in offsetting disclosures above $ — December 31, 2019 Repurchase agreements: U.S. Treasury $ 435,904 $ — $ — $ — $ 435,904 Residential mortgage-backed securities 1,232,238 — — — 1,232,238 Total borrowings $ 1,668,142 $ — $ — $ — $ 1,668,142 Gross amount of recognized liabilities for repurchase agreements $ 1,668,142 Amounts related to agreements not included in offsetting disclosures above $ — |
Stock-Based Compensation
Stock-Based Compensation | 3 Months Ended |
Mar. 31, 2020 | |
Share-based Payment Arrangement [Abstract] | |
Stock-Based Compensation | Stock-Based Compensation A combined summary of activity in our active stock plans is presented in the table. Performance stock units outstanding are presented assuming attainment of the maximum payout rate as set forth by the performance criteria. As of March 31, 2020 , there were 1,115,490 shares remaining available for grant for future stock-based compensation awards. Director Deferred Stock Units Outstanding Non-Vested Stock Awards/Stock Units Outstanding Performance Stock Units Outstanding Stock Options Outstanding Number of Units Weighted- Average Fair Value at Grant Number of Shares/Units Weighted- Average Fair Value at Grant Number of Units Weighted- Average Fair Value at Grant Number of Shares Weighted- Average Exercise Price Balance, January 1, 2020 55,370 $ 74.76 440,647 $ 90.22 177,288 $ 83.48 1,980,866 $ 64.60 Authorized — — — — — — — — Granted — — 458 65.43 — — — — Exercised/vested — — — — (41,755 ) 69.70 (24,460 ) 59.81 Forfeited/expired — — (1,438 ) 88.69 (6,894 ) 81.33 (2,000 ) 72.02 Balance, March 31, 2020 55,370 $ 74.76 439,667 $ 90.20 128,639 $ 88.07 1,954,406 $ 64.65 Shares issued in connection with stock compensation awards are issued from available treasury shares. If no treasury shares are available, new shares are issued from available authorized shares. Shares issued in connection with stock compensation awards along with other related information were as follows: Three Months Ended 2020 2019 New shares issued from available authorized shares — — Issued from available treasury stock 66,215 100,865 Total 66,215 100,865 Proceeds from stock option exercises $ 1,463 $ 4,885 Stock-based compensation expense is recognized ratably over the requisite service period for all awards. For most stock option awards, the service period generally matches the vesting period. For stock options granted to certain executive officers and for non-vested stock units granted to all participants, the service period does not extend past the date the participant reaches 65 years of age. Deferred stock units granted to non-employee directors generally have immediate vesting and the related expense is fully recognized on the date of grant. For performance stock units, the service period generally matches the three-year performance period specified by the award, however, the service period does not extend past the date the participant reaches 65 years of age. Expense recognized each period is dependent upon our estimate of the number of shares that will ultimately be issued. Stock-based compensation expense and the related income tax benefit is presented in the following table. Three Months Ended 2020 2019 Stock options $ — $ 382 Non-vested stock awards/stock units 2,264 2,135 Performance stock units 248 1,137 Total $ 2,512 $ 3,654 Income tax benefit $ 465 $ 584 Unrecognized stock-based compensation expense at March 31, 2020 is presented in the table below. Unrecognized stock-based compensation expense related to performance stock units is presented assuming attainment of the maximum payout rate as set forth by the performance criteria. Non-vested stock awards/stock units $ 16,524 Performance stock units 5,536 Total $ 22,060 |
Earnings Per Common Share
Earnings Per Common Share | 3 Months Ended |
Mar. 31, 2020 | |
Earnings Per Share [Abstract] | |
Earnings Per Common Share | Earnings Per Common Share Earnings per common share is computed using the two-class method as more fully described in our 2019 Form 10-K. The following table presents a reconciliation of net income available to common shareholders, net earnings allocated to common stock and the number of shares used in the calculation of basic and diluted earnings per common share. Three Months Ended 2020 2019 Net income $ 54,753 $ 116,496 Less: Preferred stock dividends 2,016 2,016 Redemption of preferred stock 5,514 — Net income available to common shareholders 47,223 114,480 Less: Earnings allocated to participating securities 445 980 Net earnings allocated to common stock $ 46,778 $ 113,500 Distributed earnings allocated to common stock $ 44,512 $ 42,238 Undistributed earnings allocated to common stock 2,266 71,262 Net earnings allocated to common stock $ 46,778 $ 113,500 Weighted-average shares outstanding for basic earnings per common share 62,642,682 63,009,060 Dilutive effect of stock compensation 407,154 818,896 Weighted-average shares outstanding for diluted earnings per common share 63,049,836 63,827,956 |
Defined Benefit Plans
Defined Benefit Plans | 3 Months Ended |
Mar. 31, 2020 | |
Retirement Benefits [Abstract] | |
Defined Benefit Plans | Defined Benefit Plans The components of the combined net periodic expense (benefit) for our defined benefit pension plans are presented in the table below. Three Months Ended 2020 2019 Expected return on plan assets, net of expenses $ (3,072 ) $ (2,693 ) Interest cost on projected benefit obligation 1,252 1,618 Net amortization and deferral 1,330 1,406 Net periodic expense (benefit) $ (490 ) $ 331 Our non-qualified defined benefit pension plan is not funded. No contributions to the qualified defined benefit pension plan were made during the three months ended March 31, 2020 . We do not expect to make any contributions to the qualified defined benefit plan during the remainder of 2020 . |
Income Taxes
Income Taxes | 3 Months Ended |
Mar. 31, 2020 | |
Income Tax Disclosure [Abstract] | |
Income Taxes | Income Taxes Income tax expense was as follows: Three Months Ended 2020 2019 Current income tax expense (benefit) $ 29,412 $ 14,999 Deferred income tax expense (benefit) (26,089 ) (1,044 ) Income tax expense, as reported $ 3,323 $ 13,955 Effective tax rate 5.7 % 10.7 % We had a net deferred tax liability totaling $67.6 million at March 31, 2020 and $75.8 million at December 31, 2019 . No valuation allowance for deferred tax assets was recorded at March 31, 2020 as management believes it is more likely than not that all of the deferred tax assets will be realized against deferred tax liabilities and projected future taxable income. The effective income tax rates differed from the U.S. statutory federal income tax rates of 21% during the comparable periods primarily due to the effect of tax-exempt income from loans, securities and life insurance policies and the income tax effects associated with stock-based compensation. There were no unrecognized tax benefits during any of the reported periods. Interest and/or penalties related to income taxes are reported as a component of income tax expense. Such amounts were not significant during the reported periods. We file income tax returns in the U.S. federal jurisdiction. We are no longer subject to U.S. federal income tax examinations by tax authorities for years before 2016. |
Other Comprehensive Income (Los
Other Comprehensive Income (Loss) | 3 Months Ended |
Mar. 31, 2020 | |
Equity [Abstract] | |
Other Comprehensive Income (Loss) | Other Comprehensive Income (Loss) The before and after tax amounts allocated to each component of other comprehensive income (loss) are presented in the following table. Reclassification adjustments related to securities available for sale are included in net gain (loss) on securities transactions in the accompanying consolidated statements of income. Reclassification adjustments related to defined-benefit post-retirement benefit plans are included in the computation of net periodic pension expense (see Note 12 – Defined Benefit Plans). Three Months Ended Three Months Ended Before Tax Amount Tax Expense, (Benefit) Net of Tax Amount Before Tax Amount Tax Expense, (Benefit) Net of Tax Amount Securities available for sale and transferred securities: Change in net unrealized gain/loss during the period $ 230,118 $ 48,325 $ 181,793 $ 198,146 $ 41,611 $ 156,535 Change in net unrealized gain on securities transferred to held to maturity (377 ) (79 ) (298 ) (344 ) (72 ) (272 ) Reclassification adjustment for net (gains) losses included in net income (108,989 ) (22,888 ) (86,101 ) — — — Total securities available for sale and transferred securities 120,752 25,358 95,394 197,802 41,539 156,263 Defined-benefit post-retirement benefit plans: Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) 1,330 279 1,051 1,406 295 1,111 Total defined-benefit post-retirement benefit plans 1,330 279 1,051 1,406 295 1,111 Total other comprehensive income (loss) $ 122,082 $ 25,637 $ 96,445 $ 199,208 $ 41,834 $ 157,374 Activity in accumulated other comprehensive income (loss), net of tax, was as follows: Securities Available For Sale Defined Benefit Plans Accumulated Other Comprehensive Income Balance January 1, 2020 $ 313,304 $ (45,934 ) $ 267,370 Other comprehensive income (loss) before reclassifications 181,495 — 181,495 Reclassification of amounts included in net income (86,101 ) 1,051 (85,050 ) Net other comprehensive income (loss) during period 95,394 1,051 96,445 Balance at March 31, 2020 $ 408,698 $ (44,883 ) $ 363,815 Balance January 1, 2019 $ (16,103 ) $ (47,497 ) $ (63,600 ) Other comprehensive income (loss) before reclassifications 156,263 — 156,263 Reclassification of amounts included in net income — 1,111 1,111 Net other comprehensive income (loss) during period 156,263 1,111 157,374 Balance at March 31, 2019 $ 140,160 $ (46,386 ) $ 93,774 |
Operating Segments
Operating Segments | 3 Months Ended |
Mar. 31, 2020 | |
Segment Reporting [Abstract] | |
Operating Segments | Operating Segments We are managed under a matrix organizational structure whereby our two primary operating segments, Banking and Frost Wealth Advisors, overlap a regional reporting structure. See our 2019 Form 10-K for additional information regarding our operating segments. Summarized operating results by segment were as follows: Banking Frost Wealth Advisors Non-Banks Consolidated Revenues from (expenses to) external customers: Three months ended: March 31, 2020 $ 419,429 $ 40,607 $ (2,600 ) $ 457,436 March 31, 2019 308,613 37,351 (2,710 ) 343,254 Net income (loss): Three months ended: March 31, 2020 $ 52,024 $ 5,587 $ (2,858 ) $ 54,753 March 31, 2019 112,917 6,400 (2,821 ) 116,496 |
Fair Value Measurements
Fair Value Measurements | 3 Months Ended |
Mar. 31, 2020 | |
Fair Value Disclosures [Abstract] | |
Fair Value Measurements | Fair Value Measurements The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, we utilize valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 820 establishes a three-level fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. See our 2019 Form 10-K for additional information regarding the fair value hierarchy and a description of our valuation techniques. Financial Assets and Financial Liabilities. The table below summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 , segregated by the level of the valuation inputs within the fair value hierarchy of ASC Topic 820 utilized to measure fair value. Level 1 Level 2 Level 3 Total Fair March 31, 2020 Securities available for sale: U.S. Treasury $ 1,167,264 $ — $ — $ 1,167,264 Residential mortgage-backed securities — 2,089,946 — 2,089,946 States and political subdivisions — 7,167,866 — 7,167,866 Other — 42,901 — 42,901 Trading account securities: U.S. Treasury 24,491 — — 24,491 States and political subdivisions — 1,430 — 1,430 Derivative assets: Interest rate swaps, caps and floors — 97,914 — 97,914 Commodity swaps and options — 64,976 — 64,976 Foreign currency forward contracts 24 — — 24 Derivative liabilities: Interest rate swaps, caps and floors — 38,304 — 38,304 Commodity swaps and options — 64,459 — 64,459 Foreign currency forward contracts 16 — — 16 December 31, 2019 Securities available for sale: U.S. Treasury $ 1,948,133 $ — $ — $ 1,948,133 Residential mortgage-backed securities — 2,207,594 — 2,207,594 States and political subdivisions — 7,070,997 — 7,070,997 Other — 42,867 — 42,867 Trading account securities: U.S. Treasury 24,298 — — 24,298 Derivative assets: Interest rate swaps, caps and floors — 44,196 — 44,196 Commodity swaps and options — 12,218 — 12,218 Foreign currency forward contracts 45 — — 45 Derivative liabilities: Interest rate swaps, caps and floors — 20,197 — 20,197 Commodity swaps and options — 11,677 — 11,677 Foreign currency forward contracts 33 — — 33 Certain financial assets and financial liabilities are measured at fair value on a nonrecurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances. Financial assets measured at fair value on a non-recurring basis during the reported periods include certain collateral dependent loans reported at the fair value of the underlying collateral if repayment is expected solely from the collateral. The following table presents collateral dependent loans that were remeasured and reported at fair value through a specific allocation of the allowance for credit losses on loans based upon the fair value of the underlying collateral during the reported periods. Three Months Ended Three Months Ended Level 2 Level 3 Level 2 Level 3 Carrying value before allocations $ 1,919 $ 3,867 $ 11,487 $ 37,525 Specific allocations 70 (244 ) (256 ) (3,441 ) Fair value $ 1,989 $ 3,623 $ 11,231 $ 34,084 Non-Financial Assets and Non-Financial Liabilities. We do not have any non-financial assets or non-financial liabilities measured at fair value on a recurring basis. Non-financial assets measured at fair value on a non-recurring basis during the reported periods may include certain foreclosed assets which, upon initial recognition, were remeasured and reported at fair value through a charge-off to the allowance for loan losses and certain foreclosed assets which, subsequent to their initial recognition, were remeasured at fair value through a write-down included in other non-interest expense. The following table presents foreclosed assets that were remeasured and reported at fair value during the reported periods: Three Months Ended 2020 2019 Foreclosed assets remeasured subsequent to initial recognition: Carrying value of foreclosed assets prior to remeasurement $ 328 $ — Write-downs included in other non-interest expense (231 ) — Fair value $ 97 $ — Financial Instruments Reported at Amortized Cost. The estimated fair values of financial instruments that are reported at amortized cost in our consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows: March 31, 2020 December 31, 2019 Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Financial assets: Level 2 inputs: Cash and cash equivalents $ 4,195,585 $ 4,195,585 $ 3,788,181 $ 3,788,181 Securities held to maturity 1,984,149 2,057,879 2,030,005 2,048,675 Cash surrender value of life insurance policies 188,078 188,078 187,156 187,156 Accrued interest receivable 123,995 123,995 183,850 183,850 Level 3 inputs: Loans, net 15,074,379 15,246,193 14,618,165 14,654,615 Financial liabilities: Level 2 inputs: Deposits 28,140,867 28,150,786 27,639,564 27,641,255 Federal funds purchased and repurchase agreements 1,170,978 1,170,978 1,695,342 1,695,342 Junior subordinated deferrable interest debentures 136,314 137,115 136,299 137,115 Subordinated notes payable and other borrowings 98,904 102,250 98,865 89,077 Accrued interest payable 10,684 10,684 12,393 12,393 Under ASC Topic 825, entities may choose to measure eligible financial instruments at fair value at specified election dates. The fair value measurement option (i) may be applied instrument by instrument, with certain exceptions, (ii) is generally irrevocable and (iii) is applied only to entire instruments and not to portions of instruments. Unrealized gains and losses on items for which the fair value measurement option has been elected must be reported in earnings at each subsequent reporting date. During the reported periods, we had no financial instruments measured at fair value under the fair value measurement option. |
Accounting Standards Updates
Accounting Standards Updates | 3 Months Ended |
Mar. 31, 2020 | |
Accounting Changes and Error Corrections [Abstract] | |
Accounting Standards Updates | Accounting Standards Updates Information about certain recently issued accounting standards updates is presented below. Also refer to Note 20 - Accounting Standards Updates in our 2019 Form 10-K for additional information related to previously issued accounting standards updates. ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 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 and requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. We adopted ASU 2016-13, as subsequently updated for certain clarifications, targeted relief and codification improvements, as of January 1, 2020. See Note 1 - Significant Accounting Policies for additional information. ASU 2020-4, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” ASU 2020-4 provides optional expedients and exceptions for accounting related to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. ASU 2020-04 applies only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform and do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. ASU 2020-4 was effective upon issuance and generally can be applied through December 31, 2022. The adoption of ASU 2020-4 did not significantly impact our financial statements. |
Significant Accounting Polici_2
Significant Accounting Policies (Policies) | 3 Months Ended |
Mar. 31, 2020 | |
Accounting Policies [Abstract] | |
Nature of Operations | Nature of Operations. Cullen/Frost Bankers, Inc. (“Cullen/Frost”) is a financial holding company and a bank holding company headquartered in San Antonio, Texas that provides, through its subsidiaries, a broad array of products and services throughout numerous Texas markets. The terms “Cullen/Frost,” “the Corporation,” “we,” “us” and “our” mean Cullen/Frost Bankers, Inc. and its subsidiaries, when appropriate. In addition to general commercial and consumer banking, other products and services offered include trust and investment management, insurance, brokerage, mutual funds, leasing, treasury management, capital markets advisory and item processing. |
Basis of Presentation | Basis of Presentation. The consolidated financial statements in this Quarterly Report on Form 10-Q include the accounts of Cullen/Frost and all other entities in which Cullen/Frost has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation. The accounting and financial reporting policies we follow conform, in all material respects, to accounting principles generally accepted in the United States and to general practices within the financial services industry. The consolidated financial statements in this Quarterly Report on Form 10-Q have not been audited by an independent registered public accounting firm, but in the opinion of management, reflect all adjustments necessary for a fair presentation of our financial position and results of operations. All such adjustments were of a normal and recurring nature. The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q adopted by the Securities and Exchange Commission (“SEC”). Accordingly, the financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements and should be read in conjunction with our consolidated financial statements, and notes thereto, for the year ended December 31, 2019 , included in our Annual Report on Form 10-K filed with the SEC on February 4, 2020 (the “ 2019 Form 10-K”). Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period. |
Use of Estimates | Use of Estimates . The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The allowance for loan losses and the fair values of financial instruments and the status of contingencies are particularly subject to change. |
Reclassification, Policy [Policy Text Block] | Certain items in prior financial statements have been reclassified to conform to the current presentation. |
New Accounting Pronouncements, Policy [Policy Text Block] | In addition, on January 1, 2020, we adopted Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” as subsequently updated for certain clarifications, targeted relief and codification improvements. Accounting Standards Codification (“ASC”) Topic 326 (“ASC 326”) replaces the previous “incurred loss” model for measuring credit losses, which encompassed allowances for current known and inherent losses within the portfolio, with an “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. The new current expected credit loss (“CECL”) model requires the measurement of all expected credit losses for financial assets measured at amortized cost and certain off-balance-sheet credit exposures based on historical experience, current conditions, and reasonable and supportable forecasts. ASC 326 also requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASC 326 includes certain changes to the accounting for available-for-sale securities including the requirement to present credit losses as an allowance rather than as a direct write-down for available-for-sale securities management does not intend to sell or believes that it is more likely than not they will be required to sell. We adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Upon adoption, we recognized an after-tax cumulative effect reduction to retained earnings totaling $29.3 million , as detailed in the table below. Operating results for periods after January 1, 2020 are presented in accordance with ASC 326 while prior period amounts continue to be reported in accordance with previously applicable standards and the accounting policies described in our 2019 Form 10-K. |
Marketable Securities, Policy [Policy Text Block] | Securities : Securities are classified as held to maturity and carried at amortized cost when management has the positive intent and ability to hold them until maturity. Securities to be held for indefinite periods of time are classified as available for sale and carried at fair value, with the unrealized holding gains and losses (those for which no allowance for credit losses are recorded) reported as a component of other comprehensive income, net of tax. Securities held for resale in anticipation of short-term market movements are classified as trading and are carried at fair value, with changes in unrealized holding gains and losses included in income. Management determines the appropriate classification of securities at the time of purchase. Securities with limited marketability, such as stock in the Federal Reserve Bank and the Federal Home Loan Bank, are carried at cost. Interest income on securities includes amortization of purchase premiums and discounts. Premiums and discounts on securities are generally amortized using the interest method with a constant effective yield without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Premiums on callable securities are amortized to their earliest call date. A security is placed on non-accrual status if (i) principal or interest has been in default for a period of 90 days or more or (ii) full payment of principal and interest is not expected. Interest accrued but not received for a security placed on non-accrual status is reversed against interest income. Gains and losses on sales are recorded on the trade date and are derived from the amortized cost of the security sold. |
Credit Loss, Financial Instrument [Policy Text Block] | Allowance For Credit Losses - Held-to-Maturity Securities : The allowance for credit losses on held-to-maturity securities is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of held-to-maturity securities to present management's best estimate of the net amount expected to be collected. Held-to-maturity securities are charged-off against the allowance when deemed uncollectible by management. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management measures expected credit losses on held-to-maturity securities on a collective basis by major security type with each type sharing similar risk characteristics, and considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. Management has made the accounting policy election to exclude accrued interest receivable on held-to-maturity securities from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on held-to-maturity securities is presented in Note 2 - Securities. Allowance For Credit Losses - Available-for-Sale Securities : For available-for sale securities in an unrealized loss position, we first assess whether (i) we intend to sell, or (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis. If either case is affirmative, any previously recognized allowances are charged-off and the security's amortized cost is written down to fair value through income. If neither case is affirmative, the security is evaluated to determine whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and any adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on available-for-sale securities from the estimate of credit losses. Available-for-sale securities are charged-off against the allowance or, in the absence of any allowance, written down through income when deemed uncollectible by management or when either of the aforementioned criteria regarding intent or requirement to sell is met. |
Financing Receivable [Policy Text Block] | Loans : Loans are reported at the principal balance outstanding net of unearned discounts. Interest income on loans is reported on the level-yield method and includes amortization of deferred loan fees and costs over the loan term. Net loan commitment fees or costs for commitment periods greater than one year are deferred and amortized into fee income or other expense on a straight-line basis over the commitment period. Income on direct financing leases is recognized on a basis that achieves a constant periodic rate of return on the outstanding investment. Further information regarding our accounting policies related to past due loans, non-accrual loans, collateral dependent loans and troubled-debt restructurings is presented in Note 3 - Loans. |
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] | Allowance For Credit Losses - Loans : The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present management's best estimate of the net amount expected to be collected. Loans are charged-off against the allowance when deemed uncollectible by management. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on loans from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on loans is presented in Note 3 - Loans. Allowance For Credit Losses - Loans. The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present the net amount expected to be collected. The amount of the allowance represents management's best estimate of current expected credit losses on loans considering available information, from internal and external sources, relevant to assessing collectibility over the loans' contractual terms, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless (i) management has a reasonable expectation that a trouble debt restructuring will be executed with an individual borrower or (ii) such extension or renewal options are not unconditionally cancellable by us and, in such cases, the borrower is likely to meet applicable conditions and likely to request extension or renewal. Relevant available information includes historical credit loss experience, current conditions and reasonable and supportable forecasts. While historical credit loss experience provides the basis for the estimation of expected credit losses, adjustments to historical loss information may be made for differences in current portfolio-specific risk characteristics, environmental conditions or other relevant factors. The allowance for credit losses is measured on a collective basis for portfolios of loans when similar risk characteristics exist. Loans that do not share risk characteristics are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Expected credit losses for collateral dependent loans, including loans where the borrower is experiencing financial difficulty but foreclosure is not probable, are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. Credit loss expense related to loans reflects the totality of actions taken on all loans for a particular period including any necessary increases or decreases in the allowance related to changes in credit loss expectations associated with specific loans or pools of loans. Portions of the allowance may be allocated for specific credits; however, the entire allowance is available for any credit that, in management’s judgment, should be charged off. While management utilizes its best judgment and information available, the ultimate appropriateness of the allowance is dependent upon a variety of factors beyond our control, including the performance of our loan portfolio, the economy, changes in interest rates and the view of the regulatory authorities toward loan classifications. In calculating the allowance for credit losses, most loans are segmented into pools based upon similar characteristics and risk profiles. Common characteristics and risk profiles include the type/purpose of loan, underlying collateral, geographical similarity and historical/expected credit loss patterns. In developing these loan pools for the purposes of modeling expected credit losses, we also analyzed the degree of correlation in how loans within each portfolio respond when subjected to varying economic conditions and scenarios as well as other portfolio stress factors. For modeling purposes, our loan pools include (i) commercial and industrial and energy - non-revolving, (ii) commercial and industrial and energy - revolving, (iii) commercial real estate - owner occupied, (iv) commercial real estate - non-owner occupied, (v) commercial real estate - construction/land development, (vi) consumer real estate and (vii) consumer and other. We periodically reassess each pool to ensure the loans within the pool continue to share similar characteristics and risk profiles and to determine whether further segmentation is necessary. For each loan pool, we measure expected credit losses over the life of each loan utilizing a combination of models which measure (i) probability of default (“PD”), which is the likelihood that loan will stop performing/default, (ii) probability of attrition (“PA”), which is the likelihood that a loan will pay-off prior to maturity, (iii) loss given default (“LGD”), which is the expected loss rate for loans in default and (iv) exposure at default (“EAD”), which is the estimated outstanding principal balance of the loans upon default, including the expected funding of unfunded commitments outstanding as of the measurement date. For certain commercial loan portfolios, the PD is calculated using a transition matrix to determine the likelihood of a customer’s risk grade migrating from one specified range of risk grades to a different specified range. Expected credit losses are calculated as the product of PD (adjusted for attrition), LGD and EAD. This methodology builds on default probabilities already incorporated into our risk grading process by utilizing pool-specific historical loss rates to calculate expected credit losses. These pool-specific historical loss rates may be adjusted for current macroeconomic assumptions, as further discussed below, and other factors such as differences in underwriting standards, portfolio mix, or when historical asset terms do not reflect the contractual terms of the financial assets being evaluated as of the measurement date. Each time we measure expected credit losses, we assess the relevancy of historical loss information and consider any necessary adjustments to address any differences in asset-specific characteristics. Due to their short-term nature, expected credit losses for overdrafts included in consumer and other loans are based solely upon a weighting of recent historical charge-offs over a period of three years. The measurement of expected credit losses is impacted by loan/borrower attributes and certain macroeconomic variables. Significant loan/borrower attributes utilized in our modeling processes include, among other things, (i) origination date, (ii) maturity date, (iii) payment type, (iv) collateral type and amount, (v) current risk grade, (vi) current unpaid balance and commitment utilization rate, (vii) payment status/delinquency history and (viii) expected recoveries of previously charged-off amounts. Significant macroeconomic variables utilized in our modeling processes include, among other things, (i) Gross State Product for Texas and U.S. Gross Domestic Product, (ii) selected market interest rates including U.S. Treasury rates, bank prime rate, 30-year fixed mortgage rate, BBB corporate bond rate, among others, (iii) unemployment rates, (iv) commercial and residential property prices in Texas and the U.S. as a whole, (v) West Texas Intermediate crude oil price and (vi) total stock market index. PD and PA were estimated by analyzing internally-sourced data related to historical performance of each loan pool over a complete economic cycle. PD and PA are adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a reasonable and supportable forecast period. We have determined that we are reasonably able to forecast the macroeconomic variables used in our modeling processes with an acceptable degree of confidence for a total of two years with the last twelve months of the forecast period encompassing a reversion process whereby the forecasted macroeconomic variables are reverted to their historical mean utilizing a rational, systematic basis. The macroeconomic variables utilized as inputs in our modeling processes were subjected to a variety of analysis procedures and were selected primarily based on statistical relevancy and correlation to our historical credit losses. By reverting these modeling inputs to their historical mean and considering loan/borrower specific attributes, our models will yield a measurement of expected credit losses that reflects our average historical loss rates for periods subsequent to the twelve-month reversion period. The LGD is based on historical recovery averages for each loan pool, adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a two-year forecast period, with the final twelve months of the forecast period encompassing a reversion process, which management considers to be both reasonable and supportable. This same forecast/reversion period is used for all macroeconomic variables used in all of our models. EAD is estimated using a linear regression model that estimates the average percentage of the loan balance that remains at the time of a default event. Management qualitatively adjusts model results for risk factors that are not considered within our modeling processes but are nonetheless relevant in assessing the expected credit losses within our loan pools. These qualitative factor (“Q-Factor”) adjustments may increase or decrease management's estimate of expected credit losses by a calculated percentage or amount based upon the estimated level of risk. The various risks that may be considered in making Q-Factor adjustments include, among other things, the impact of (i) changes in lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries, (ii) actual and expected changes in international, national, regional, and local economic and business conditions and developments that affect the collectibility of the loan pools, (iii) changes in the nature and volume of the loan pools and in the terms of the underlying loans, (iv) changes in the experience, ability, and depth of our lending management and staff, (v) changes in volume and severity of past due financial assets, the volume of non-accrual assets, and the volume and severity of adversely classified or graded assets, (vi) changes in the quality of our credit review function, (vii) changes in the value of the underlying collateral for loans that are non-collateral dependent, (viii) the existence, growth, and effect of any concentrations of credit and (ix) other external factors such as the regulatory, legal and technological environments; competition; and events such as natural disasters or health pandemics. In some cases, management may determine that an individual loan exhibits unique risk characteristics which differentiate the loan from other loans within our loan pools. In such cases, the loans are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Specific allocations of the allowance for credit losses are determined by analyzing the borrower’s ability to repay amounts owed, collateral deficiencies, the relative risk grade of the loan and economic conditions affecting the borrower’s industry, among other things. A loan is considered to be collateral dependent when, based upon management's assessment, the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In such cases, expected credit losses are based on the fair value of the collateral at the measurement date, adjusted for estimated selling costs if satisfaction of the loan depends on the sale of the collateral. We reevaluate the fair value of collateral supporting collateral dependent loans on a quarterly basis. The fair value of real estate collateral supporting collateral dependent loans is evaluated by our internal appraisal services using a methodology that is consistent with the Uniform Standards of Professional Appraisal Practice. The fair value of collateral supporting collateral dependent construction loans is based on an “as is” valuation. |
Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block] | Allowance For Credit Losses - Off-Balance-Sheet Credit Exposures : The allowance for credit losses on off-balance-sheet credit exposures is a liability account, calculated in accordance with ASC 326, representing expected credit losses over the contractual period for which we are exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if we have the unconditional right to cancel the obligation. The allowance is reported as a component of accrued interest payable and other liabilities in our consolidated balance sheets. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Further information regarding our policies and methodology used to estimate the allowance for credit losses on off-balance-sheet credit exposures is presented in Note 6 - Off-Balance-Sheet Arrangements, Commitments, Guarantees and Contingencies. |
Loans Loans - Allowance For Cre
Loans Loans - Allowance For Credit Losses (Policies) | 3 Months Ended |
Mar. 31, 2020 | |
Accounting Policies [Abstract] | |
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] | Allowance For Credit Losses - Loans : The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present management's best estimate of the net amount expected to be collected. Loans are charged-off against the allowance when deemed uncollectible by management. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Adjustments to the allowance are reported in our income statement as a component of credit loss expense. Management has made the accounting policy election to exclude accrued interest receivable on loans from the estimate of credit losses. Further information regarding our policies and methodology used to estimate the allowance for credit losses on loans is presented in Note 3 - Loans. Allowance For Credit Losses - Loans. The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326, that is deducted from the amortized cost basis of loans to present the net amount expected to be collected. The amount of the allowance represents management's best estimate of current expected credit losses on loans considering available information, from internal and external sources, relevant to assessing collectibility over the loans' contractual terms, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless (i) management has a reasonable expectation that a trouble debt restructuring will be executed with an individual borrower or (ii) such extension or renewal options are not unconditionally cancellable by us and, in such cases, the borrower is likely to meet applicable conditions and likely to request extension or renewal. Relevant available information includes historical credit loss experience, current conditions and reasonable and supportable forecasts. While historical credit loss experience provides the basis for the estimation of expected credit losses, adjustments to historical loss information may be made for differences in current portfolio-specific risk characteristics, environmental conditions or other relevant factors. The allowance for credit losses is measured on a collective basis for portfolios of loans when similar risk characteristics exist. Loans that do not share risk characteristics are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Expected credit losses for collateral dependent loans, including loans where the borrower is experiencing financial difficulty but foreclosure is not probable, are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. Credit loss expense related to loans reflects the totality of actions taken on all loans for a particular period including any necessary increases or decreases in the allowance related to changes in credit loss expectations associated with specific loans or pools of loans. Portions of the allowance may be allocated for specific credits; however, the entire allowance is available for any credit that, in management’s judgment, should be charged off. While management utilizes its best judgment and information available, the ultimate appropriateness of the allowance is dependent upon a variety of factors beyond our control, including the performance of our loan portfolio, the economy, changes in interest rates and the view of the regulatory authorities toward loan classifications. In calculating the allowance for credit losses, most loans are segmented into pools based upon similar characteristics and risk profiles. Common characteristics and risk profiles include the type/purpose of loan, underlying collateral, geographical similarity and historical/expected credit loss patterns. In developing these loan pools for the purposes of modeling expected credit losses, we also analyzed the degree of correlation in how loans within each portfolio respond when subjected to varying economic conditions and scenarios as well as other portfolio stress factors. For modeling purposes, our loan pools include (i) commercial and industrial and energy - non-revolving, (ii) commercial and industrial and energy - revolving, (iii) commercial real estate - owner occupied, (iv) commercial real estate - non-owner occupied, (v) commercial real estate - construction/land development, (vi) consumer real estate and (vii) consumer and other. We periodically reassess each pool to ensure the loans within the pool continue to share similar characteristics and risk profiles and to determine whether further segmentation is necessary. For each loan pool, we measure expected credit losses over the life of each loan utilizing a combination of models which measure (i) probability of default (“PD”), which is the likelihood that loan will stop performing/default, (ii) probability of attrition (“PA”), which is the likelihood that a loan will pay-off prior to maturity, (iii) loss given default (“LGD”), which is the expected loss rate for loans in default and (iv) exposure at default (“EAD”), which is the estimated outstanding principal balance of the loans upon default, including the expected funding of unfunded commitments outstanding as of the measurement date. For certain commercial loan portfolios, the PD is calculated using a transition matrix to determine the likelihood of a customer’s risk grade migrating from one specified range of risk grades to a different specified range. Expected credit losses are calculated as the product of PD (adjusted for attrition), LGD and EAD. This methodology builds on default probabilities already incorporated into our risk grading process by utilizing pool-specific historical loss rates to calculate expected credit losses. These pool-specific historical loss rates may be adjusted for current macroeconomic assumptions, as further discussed below, and other factors such as differences in underwriting standards, portfolio mix, or when historical asset terms do not reflect the contractual terms of the financial assets being evaluated as of the measurement date. Each time we measure expected credit losses, we assess the relevancy of historical loss information and consider any necessary adjustments to address any differences in asset-specific characteristics. Due to their short-term nature, expected credit losses for overdrafts included in consumer and other loans are based solely upon a weighting of recent historical charge-offs over a period of three years. The measurement of expected credit losses is impacted by loan/borrower attributes and certain macroeconomic variables. Significant loan/borrower attributes utilized in our modeling processes include, among other things, (i) origination date, (ii) maturity date, (iii) payment type, (iv) collateral type and amount, (v) current risk grade, (vi) current unpaid balance and commitment utilization rate, (vii) payment status/delinquency history and (viii) expected recoveries of previously charged-off amounts. Significant macroeconomic variables utilized in our modeling processes include, among other things, (i) Gross State Product for Texas and U.S. Gross Domestic Product, (ii) selected market interest rates including U.S. Treasury rates, bank prime rate, 30-year fixed mortgage rate, BBB corporate bond rate, among others, (iii) unemployment rates, (iv) commercial and residential property prices in Texas and the U.S. as a whole, (v) West Texas Intermediate crude oil price and (vi) total stock market index. PD and PA were estimated by analyzing internally-sourced data related to historical performance of each loan pool over a complete economic cycle. PD and PA are adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a reasonable and supportable forecast period. We have determined that we are reasonably able to forecast the macroeconomic variables used in our modeling processes with an acceptable degree of confidence for a total of two years with the last twelve months of the forecast period encompassing a reversion process whereby the forecasted macroeconomic variables are reverted to their historical mean utilizing a rational, systematic basis. The macroeconomic variables utilized as inputs in our modeling processes were subjected to a variety of analysis procedures and were selected primarily based on statistical relevancy and correlation to our historical credit losses. By reverting these modeling inputs to their historical mean and considering loan/borrower specific attributes, our models will yield a measurement of expected credit losses that reflects our average historical loss rates for periods subsequent to the twelve-month reversion period. The LGD is based on historical recovery averages for each loan pool, adjusted to reflect the current impact of certain macroeconomic variables as well as their expected changes over a two-year forecast period, with the final twelve months of the forecast period encompassing a reversion process, which management considers to be both reasonable and supportable. This same forecast/reversion period is used for all macroeconomic variables used in all of our models. EAD is estimated using a linear regression model that estimates the average percentage of the loan balance that remains at the time of a default event. Management qualitatively adjusts model results for risk factors that are not considered within our modeling processes but are nonetheless relevant in assessing the expected credit losses within our loan pools. These qualitative factor (“Q-Factor”) adjustments may increase or decrease management's estimate of expected credit losses by a calculated percentage or amount based upon the estimated level of risk. The various risks that may be considered in making Q-Factor adjustments include, among other things, the impact of (i) changes in lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries, (ii) actual and expected changes in international, national, regional, and local economic and business conditions and developments that affect the collectibility of the loan pools, (iii) changes in the nature and volume of the loan pools and in the terms of the underlying loans, (iv) changes in the experience, ability, and depth of our lending management and staff, (v) changes in volume and severity of past due financial assets, the volume of non-accrual assets, and the volume and severity of adversely classified or graded assets, (vi) changes in the quality of our credit review function, (vii) changes in the value of the underlying collateral for loans that are non-collateral dependent, (viii) the existence, growth, and effect of any concentrations of credit and (ix) other external factors such as the regulatory, legal and technological environments; competition; and events such as natural disasters or health pandemics. In some cases, management may determine that an individual loan exhibits unique risk characteristics which differentiate the loan from other loans within our loan pools. In such cases, the loans are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Specific allocations of the allowance for credit losses are determined by analyzing the borrower’s ability to repay amounts owed, collateral deficiencies, the relative risk grade of the loan and economic conditions affecting the borrower’s industry, among other things. A loan is considered to be collateral dependent when, based upon management's assessment, the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In such cases, expected credit losses are based on the fair value of the collateral at the measurement date, adjusted for estimated selling costs if satisfaction of the loan depends on the sale of the collateral. We reevaluate the fair value of collateral supporting collateral dependent loans on a quarterly basis. The fair value of real estate collateral supporting collateral dependent loans is evaluated by our internal appraisal services using a methodology that is consistent with the Uniform Standards of Professional Appraisal Practice. The fair value of collateral supporting collateral dependent construction loans is based on an “as is” valuation. |
Significant Accounting Polici_3
Significant Accounting Policies (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Accounting Policies [Abstract] | |
Additional Cash Flow Information | Additional cash flow information was as follows: Three Months Ended 2020 2019 Cash paid for interest $ 23,168 $ 34,402 Cash paid for income taxes — — Significant non-cash transactions: Unsettled securities transactions 11,196 7,612 Right-of-use lease assets obtained in exchange for lessee operating lease liabilities 9,892 170,479 |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] | The following table details the impact of the adoption of ASC 326 on the allowance for credit losses as of January 1, 2020. January 1, 2020 Pre-Adoption Allowance Impact of Adoption Post-Adoption Allowance Cumulative Effect on Retained Earnings Securities held to maturity: U.S. Treasury $ — $ — $ — $ — Residential mortgage-backed securities — — — — States and political subdivisions — 215 215 (170 ) Other — — — — Total $ — $ 215 $ 215 $ (170 ) Loans: Commercial and industrial $ 51,593 $ 21,263 $ 72,856 $ (16,798 ) Energy 37,382 (10,453 ) 26,929 8,258 Commercial real estate 31,037 (13,519 ) 17,518 10,680 Consumer real estate 4,113 2,392 6,505 (1,890 ) Consumer and other 8,042 (2,248 ) 5,794 1,776 Total $ 132,167 $ (2,565 ) $ 129,602 $ 2,026 Off-balance-sheet credit exposures $ 500 $ 39,377 $ 39,877 $ (31,108 ) |
Securities (Tables)
Securities (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Investments, Debt and Equity Securities [Abstract] | |
Debt Securities, Held-to-maturity [Table Text Block] | A summary of the amortized cost, fair value and allowance for credit losses related to securities held to maturity as of March 31, 2020 and December 31, 2019 is presented below. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Allowance for Credit Losses Net Carrying Amount March 31, 2020 Residential mortgage-backed securities $ 530,396 $ 37,234 $ — $ 567,630 $ — $ 530,396 States and political subdivisions 1,452,453 36,296 — 1,488,749 (200 ) 1,452,253 Other 1,500 — — 1,500 — 1,500 Total $ 1,984,349 $ 73,530 $ — $ 2,057,879 $ (200 ) $ 1,984,149 December 31, 2019 Residential mortgage-backed securities $ 530,861 $ 22 $ 9,365 $ 521,518 $ — $ 530,861 States and political subdivisions 1,497,644 28,909 896 1,525,657 — 1,497,644 Other 1,500 — — 1,500 — 1,500 Total $ 2,030,005 $ 28,931 $ 10,261 $ 2,048,675 $ — $ 2,030,005 |
Moody's and Standard & Poor's Bond Ratings [Table Text Block] | The following table summarizes Moody's and/or Standard & Poor's bond ratings for our portfolio of held-to-maturity securities issued by States and political subdivisions and other securities as of March 31, 2020: States and Political Subdivisions Not Guaranteed or Pre-Refunded Guaranteed by the Texas PSF Pre-Refunded Total Other Securities Aaa/AAA $ 131,760 $ 849,396 $ 284,678 $ 1,265,834 $ — Aa/AA 118,271 — — 118,271 — A 68,348 — — 68,348 — Not rated — — — — 1,500 Total $ 318,379 $ 849,396 $ 284,678 $ 1,452,453 $ 1,500 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Table Text Block] | The following table details activity in the allowance for credit losses on held-to-maturity securities during the three months ended March 31, 2020 . Beginning balance, prior to adoption of ASC 326 $ — Impact of adopting ASC 326 215 Credit loss expense (benefit) (15 ) Ending balance $ 200 |
Amortized Cost, Estimated Fair Value and Allowance for Credit Losses of Securities Available for Sale | A summary of the amortized cost, fair value and allowance for credit losses related to securities available for sale as of March 31, 2020 and December 31, 2019 is presented below. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance for Credit Losses Estimated Fair Value March 31, 2020 U.S. Treasury $ 1,117,523 $ 49,741 $ — $ — $ 1,167,264 Residential mortgage-backed securities 2,009,523 80,423 — — 2,089,946 States and political subdivisions 6,785,079 382,976 189 — 7,167,866 Other 42,901 — — — 42,901 Total $ 9,955,026 $ 513,140 $ 189 $ — $ 10,467,977 December 31, 2019 U.S. Treasury $ 1,941,283 $ 18,934 $ 12,084 $ — $ 1,948,133 Residential mortgage-backed securities 2,176,275 32,608 1,289 — 2,207,594 States and political subdivisions 6,717,344 353,857 204 — 7,070,997 Other 42,867 — — — 42,867 Total $ 10,877,769 $ 405,399 $ 13,577 $ — $ 11,269,591 |
Securities, with Unrealized Losses Segregated by Length of Impairment | The table below summarizes, as of March 31, 2020 , securities available for sale in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by type of security and length of time in a continuous unrealized loss position. Less than 12 Months More than 12 Months Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses States and political subdivisions $ 67,949 $ 189 $ — $ — $ 67,949 $ 189 Total $ 67,949 $ 189 $ — $ — $ 67,949 $ 189 |
Amortized Cost and Estimated Fair Value of Securities, Excluding Trading Securities, Presented by Contractual Maturity | The following table summarizes the maturity distribution schedule of securities held to maturity and securities available for sale as of March 31, 2020 . Mortgage-backed securities are included in maturity categories based on their stated maturity date. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Other securities classified as available for sale include stock in the Federal Reserve Bank and the Federal Home Loan Bank, which have no maturity date. These securities have been included in the total column only. Within 1 Year 1 - 5 Years 5 - 10 Years After 10 Years Total Held To Maturity Amortized Cost Residential mortgage-backed securities $ — $ 332 $ 516,866 $ 13,198 $ 530,396 States and political subdivisions 25,324 170,386 496,235 760,508 1,452,453 Other — 1,500 — — 1,500 Total $ 25,324 $ 172,218 $ 1,013,101 $ 773,706 $ 1,984,349 Estimated Fair Value Residential mortgage-backed securities $ — $ 335 $ 553,409 $ 13,886 $ 567,630 States and political subdivisions 25,579 174,896 507,221 781,053 1,488,749 Other — 1,500 — — 1,500 Total $ 25,579 $ 176,731 $ 1,060,630 $ 794,939 $ 2,057,879 Available For Sale Amortized Cost U. S. Treasury $ 33,964 $ 1,083,559 $ — $ — $ 1,117,523 Residential mortgage-backed securities 236 68,185 5,859 1,935,243 2,009,523 States and political subdivisions 250,489 220,504 648,416 5,665,670 6,785,079 Other — — — — 42,901 Total $ 284,689 $ 1,372,248 $ 654,275 $ 7,600,913 $ 9,955,026 Estimated Fair Value U. S. Treasury $ 34,181 $ 1,133,083 $ — $ — $ 1,167,264 Residential mortgage-backed securities 249 70,834 6,379 2,012,484 2,089,946 States and political subdivisions 252,108 231,285 686,745 5,997,728 7,167,866 Other — — — — 42,901 Total $ 286,538 $ 1,435,202 $ 693,124 $ 8,010,212 $ 10,467,977 |
Sales of Securities Available for Sale | Sales of securities available for sale were as follows: Three Months Ended 2020 2019 Proceeds from sales $ 1,111,102 $ 944,903 Gross realized gains 108,989 — Gross realized losses — — Tax (expense) benefit of securities gains/losses 22,888 — |
Premium Amortization and Discount Accretion Included in Income on Securities [Table Text Block] | Premium amortization and discount accretion included in interest income on securities was as follows: Three Months Ended 2020 2019 Premium amortization $ (32,345 ) $ (29,879 ) Discount accretion 585 1,183 Net (premium amortization) discount accretion $ (31,760 ) $ (28,696 ) |
Trading Account Securities, at Estimated Fair Value | Trading account securities, at estimated fair value, were as follows: March 31, December 31, U.S. Treasury $ 24,491 $ 24,298 States and political subdivisions 1,430 — Total $ 25,921 $ 24,298 |
Net Gains and Losses on Trading Account Securities | Net gains and losses on trading account securities were as follows: Three Months Ended 2020 2019 Net gain on sales transactions $ 470 $ 506 Net mark-to-market gains (losses) 115 4 Net gain (loss) on trading account securities $ 585 $ 510 |
Loans (Tables)
Loans (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Receivables [Abstract] | |
Loans | Loans were as follows: March 31, Percentage of Total December 31, Percentage of Total Commercial and industrial $ 5,536,760 36.1 % $ 5,187,466 35.2 % Energy: Production 1,268,832 8.3 1,348,900 9.2 Service 185,210 1.2 192,996 1.3 Other 114,812 0.7 110,986 0.8 Total energy 1,568,854 10.2 1,652,882 11.2 Commercial real estate: Commercial mortgages 4,920,882 32.1 4,594,113 31.1 Construction 1,265,441 8.3 1,312,659 8.9 Land 286,876 1.9 289,467 2.0 Total commercial real estate 6,473,199 42.3 6,196,239 42.0 Consumer real estate: Home equity loans 389,844 2.5 375,596 2.6 Home equity lines of credit 350,330 2.3 354,671 2.4 Other 480,933 3.1 464,146 3.1 Total consumer real estate 1,221,107 7.9 1,194,413 8.1 Total real estate 7,694,306 50.2 7,390,652 50.1 Consumer and other 538,340 3.5 519,332 3.5 Total loans $ 15,338,260 100.0 % $ 14,750,332 100.0 % |
Non-Accrual Loans, Segregated by Class of Loans | Non-accrual loans, segregated by class of loans, were as follows: March 31, 2020 December 31, 2019 Total Non-Accrual Non-Accrual with No Credit Loss Allowance Total Non-Accrual Non-Accrual with No Credit Loss Allowance Commercial and industrial $ 23,913 $ 11,085 $ 26,038 $ 13,266 Energy 28,702 28,702 65,761 3,281 Commercial real estate: Buildings, land and other 8,224 5,922 8,912 6,558 Construction 3,774 683 665 665 Consumer real estate 2,094 2,094 922 922 Consumer and other 20 1 5 — Total $ 66,727 $ 48,487 $ 102,303 $ 24,692 |
Financing Receivable, Non-Accrual Loans, Segregated by Class of Loan and Year of Origination | The following table presents non-accrual loans as of March 31, 2020 by class and year of origination. 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Commercial and industrial $ — $ 3,187 $ 9,012 $ 2,448 $ 384 $ 146 $ 4,601 $ 4,135 $ 23,913 Energy — — — — — — 3,035 25,667 28,702 Commercial real estate: Buildings, land and other — 2,207 34 1,470 306 3,639 568 — 8,224 Construction — 3,774 — — — — — — 3,774 Consumer real estate — — — 211 350 628 844 61 2,094 Consumer and other — 1 — — — — 19 — 20 Total $ — $ 9,169 $ 9,046 $ 4,129 $ 1,040 $ 4,413 $ 9,067 $ 29,863 $ 66,727 |
Age Analysis of Past Due Loans, Segregated by Class of Loans | An age analysis of past due loans (including both accruing and non-accruing loans), segregated by class of loans, as of March 31, 2020 was as follows: Loans 30-89 Days Past Due Loans 90 or More Days Past Due Total Past Due Loans Current Loans Total Loans Accruing Loans 90 or More Days Past Due Commercial and industrial $ 38,518 $ 24,217 $ 62,735 $ 5,474,025 $ 5,536,760 $ 8,343 Energy 23,913 25,667 49,580 1,519,274 1,568,854 — Commercial real estate: Buildings, land and other 39,359 3,472 42,831 5,164,927 5,207,758 817 Construction 4,701 127 4,828 1,260,613 1,265,441 127 Consumer real estate 9,542 3,230 12,772 1,208,335 1,221,107 1,572 Consumer and other 6,134 1,013 7,147 531,193 538,340 1,013 Total $ 122,167 $ 57,726 $ 179,893 $ 15,158,367 $ 15,338,260 $ 11,872 |
Troubled Debt Restructurings | Troubled debt restructurings during the three months ended March 31, 2020 and March 31, 2019 are set forth in the following table. Three Months Ended Three Months Ended Balance at Restructure Balance at Period-End Balance at Restructure Balance at Period-End Commercial and industrial $ 2,191 $ 2,198 $ 307 $ 293 Commercial real estate: Buildings, land and other — — 5,901 5,898 $ 2,191 $ 2,198 $ 6,208 $ 6,191 |
Restructured Loans Past Due in Excess of 90 Days on Financing Receivables | Additional information related to restructured loans as of or for the three months ended March 31, 2020 and March 31, 2019 is set forth in the following table. March 31, 2020 March 31, 2019 Restructured loans past due in excess of 90 days at period-end: Number of loans 3 4 Dollar amount of loans $ 1,733 $ 2,367 Restructured loans on non-accrual status at period end 2,198 2,162 Charge-offs of restructured loans: Recognized in connection with restructuring — — Recognized on previously restructured loans 1,533 — |
Weighted Average Risk Grades for All Commercial Loans by Class and Year of Origination | The following tables present weighted-average risk grades for all commercial loans by class and year of origination/renewal as of March 31, 2020 . 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total W/A Risk Grade Commercial and industrial Risk grades 1-8 $ 765,088 $ 813,141 $ 433,145 $ 333,114 $ 168,744 $ 143,770 $ 2,362,308 $ 47,080 $ 5,066,390 6.14 Risk grade 9 15,539 34,847 51,906 14,167 7,700 10,993 127,148 6,267 268,567 9.00 Risk grade 10 21,815 10,918 13,042 7,237 6,670 3,377 74,625 679 138,363 10.00 Risk grade 11 45 5,853 2,276 3,149 922 661 17,664 8,957 39,527 11.00 Risk grade 12 — 536 7,179 1,432 384 146 2,520 2,512 14,709 12.00 Risk grade 13 — 2,651 1,833 1,016 — — 2,081 1,623 9,204 13.00 $ 802,487 $ 867,946 $ 509,381 $ 360,115 $ 184,420 $ 158,947 $ 2,586,346 $ 67,118 $ 5,536,760 6.44 W/A Risk grade 5.75 6.69 7.12 6.18 6.24 6.10 6.46 7.89 6.44 Energy Risk grades 1-8 $ 585,655 $ 95,004 $ 22,101 $ 11,048 $ 3,187 $ 5,514 $ 665,347 $ 9,642 $ 1,397,498 6.33 Risk grade 9 215 2,105 999 587 — — 25,658 46 29,610 9.00 Risk grade 10 — 669 — — — 47 10,250 — 10,966 10.00 Risk grade 11 62,509 325 941 300 8 770 36,105 1,120 102,078 11.00 Risk grade 12 — — — — — — 3,035 25,667 28,702 12.00 Risk grade 13 — — — — — — — — — 13.00 $ 648,379 $ 98,103 $ 24,041 $ 11,935 $ 3,195 $ 6,331 $ 740,395 $ 36,475 $ 1,568,854 6.81 W/A Risk grade 6.89 7.21 7.25 7.34 6.60 7.48 6.48 10.69 6.81 Commercial real estate: Buildings, land, other Risk grades 1-8 $ 503,028 $ 1,080,494 $ 780,270 $ 745,352 $ 518,981 $ 909,275 $ 83,274 $ 59,064 $ 4,679,738 6.89 Risk grade 9 1,872 89,718 41,520 79,696 55,037 59,672 400 264 328,179 9.00 Risk grade 10 — 14,619 500 20,394 26,200 58,297 632 — 120,642 10.00 Risk grade 11 249 11,275 1,789 31,201 8,235 16,135 100 1,991 70,975 11.00 Risk grade 12 — 2,207 34 1,470 306 3,389 505 — 7,911 12.00 Risk grade 13 — — — — — 250 63 — 313 13.00 $ 505,149 $ 1,198,313 $ 824,113 $ 878,113 $ 608,759 $ 1,047,018 $ 84,974 $ 61,319 $ 5,207,758 7.16 W/A Risk grade 6.97 7.19 7.08 7.32 7.37 7.04 7.03 6.84 7.16 Construction Risk grades 1-8 $ 115,476 $ 374,393 $ 456,568 $ 105,160 $ 1,196 $ 17,193 $ 144,922 $ — $ 1,214,908 7.15 Risk grade 9 406 14,003 3,500 2,919 6,984 — 127 — 27,939 9.00 Risk grade 10 12,991 2,744 — 917 — — — — 16,652 10.00 Risk grade 11 1,192 — — — — 976 — — 2,168 11.00 Risk grade 12 — 683 — — — — — — 683 12.00 Risk grade 13 — 3,091 — — — — — — 3,091 13.00 $ 130,065 $ 394,914 $ 460,068 $ 108,996 $ 8,180 $ 18,169 $ 145,049 $ — $ 1,265,441 7.25 W/A Risk grade 7.59 7.24 7.24 7.54 8.71 6.31 6.84 — 7.25 Total commercial real estate $ 635,214 $ 1,593,227 $ 1,284,181 $ 987,109 $ 616,939 $ 1,065,187 $ 230,023 $ 61,319 $ 6,473,199 7.18 W/A Risk grade 7.10 7.21 7.14 7.35 7.38 7.02 6.91 6.84 7.18 |
Weighted Average Risk Grades for All Commercial Loans by Class | The following tables present weighted average risk grades for all commercial loans by class as of December 31, 2019 . Commercial and Industrial Energy Commercial Real Estate - Buildings, Land and Other Commercial Real Estate - Construction Total Commercial Real Estate W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans W/A Risk Grade Loans Risk grades 1-8 6.17 $ 4,788,857 5.90 $ 1,488,301 6.78 $ 4,523,271 7.25 $ 1,274,098 6.88 $ 5,797,369 Risk grade 9 9.00 247,212 9.00 32,163 9.00 163,714 9.00 21,509 9.00 185,223 Risk grade 10 10.00 71,472 10.00 51,898 10.00 103,626 10.00 15,243 10.00 118,869 Risk grade 11 11.00 53,887 11.00 14,760 11.00 84,057 11.00 1,144 11.00 85,201 Risk grade 12 12.00 18,189 12.00 45,514 12.00 8,529 12.00 665 12.00 9,194 Risk grade 13 13.00 7,849 13.00 20,246 13.00 383 13.00 — 13.00 383 Total 6.44 $ 5,187,466 6.39 $ 1,652,882 7.01 $ 4,883,580 7.31 $ 1,312,659 7.07 $ 6,196,239 |
Age analysis of Past Due Consumer Loans by Class and Year of Origination | , segregated by portfolio segment and year of origination, as of March 31, 2020 was as follows: 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Total Consumer real estate: Past due 30-89 days $ — $ 623 $ 771 $ 1,490 $ 763 $ 3,575 $ 1,206 $ 1,114 $ 9,542 Past due 90 or more days — — 512 108 386 1,000 1,224 — 3,230 Total past due — 623 1,283 1,598 1,149 4,575 2,430 1,114 12,772 Current loans 65,082 217,726 142,566 122,282 93,385 180,883 367,149 19,262 1,208,335 Total $ 65,082 $ 218,349 $ 143,849 $ 123,880 $ 94,534 $ 185,458 $ 369,579 $ 20,376 $ 1,221,107 Consumer and other: Past due 30-89 days $ 1,414 $ 801 $ 263 $ 151 $ 102 $ 23 $ 3,380 $ — $ 6,134 Past due 90 or more days — 902 — — — — 111 — 1,013 Total past due 1,414 1,703 263 151 102 23 3,491 — 7,147 Current loans 19,780 44,825 14,699 4,329 2,762 1,490 420,517 22,791 531,193 Total $ 21,194 $ 46,528 $ 14,962 $ 4,480 $ 2,864 $ 1,513 $ 424,008 $ 22,791 $ 538,340 |
Revolving Loans Converted to Term [Table Text Block] | Revolving loans that converted to term during the three months ended March 31, 2020 were as follows: Commercial and industrial $ 11,346 Energy 15,353 Commercial real estate: Buildings, land and other 7,639 Construction — Consumer real estate 1,071 Consumer and other — Total $ 35,409 |
Financing Receivable, Allowance for Credit Loss By Loan Class Calculated in Accordance With CECL Methodology | The following table presents details of the allowance for credit losses on loans segregated by loan portfolio segment as of March 31, 2020 , calculated in accordance with the CECL methodology described above. Commercial and Industrial Energy Commercial Real Estate Consumer Real Estate Consumer and Other Total Modeled expected credit losses $ 69,446 $ 15,425 $ 34,941 $ 6,974 $ 6,950 $ 133,736 Q-Factor adjustments 13,501 87,776 13,974 1,196 1,070 117,517 Specific allocations 9,205 — 3,404 — 19 12,628 Total $ 92,152 $ 103,201 $ 52,319 $ 8,170 $ 8,039 $ 263,881 |
Allowance for Credit Losses By Loan Class in Accordance With Methodology Used Prior to CECL | The following table presents details of the allowance for credit losses on loans segregated by loan portfolio segment as of December 31, 2019 , calculated in accordance with our prior incurred loss methodology described in our 2019 Form 10-K. Commercial and Industrial Energy Commercial Real Estate Consumer Real Estate Consumer and Other Total December 31, 2019 Historical valuation allowances $ 29,015 $ 7,873 $ 21,947 $ 2,690 $ 7,562 $ 69,087 Specific valuation allowances 7,849 20,246 383 — 5 28,483 General valuation allowances 9,840 5,196 4,201 904 (409 ) 19,732 Macroeconomic valuation allowances 4,889 4,067 4,506 519 884 14,865 Total $ 51,593 $ 37,382 $ 31,037 $ 4,113 $ 8,042 $ 132,167 |
Activity in Allowance for Loan Losses by Portfolio Segment | The following table details activity in the allowance for credit losses on loans by portfolio segment for the three months ended March 31, 2020 and 2019 . Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. Commercial and Industrial Energy Commercial Real Estate Consumer Real Estate Consumer and Other Total March 31, 2020 Beginning balance $ 51,593 $ 37,382 $ 31,037 $ 4,113 $ 8,042 $ 132,167 Impact of adopting ASC 326 21,263 (10,453 ) (13,519 ) 2,392 (2,248 ) (2,565 ) Credit loss expense 21,950 110,006 34,761 1,570 4,638 172,925 Charge-offs (4,369 ) (33,800 ) (73 ) (285 ) (5,005 ) (43,532 ) Recoveries 1,715 66 113 380 2,612 4,886 Net charge-offs (2,654 ) (33,734 ) 40 95 (2,393 ) (38,646 ) Ending balance $ 92,152 $ 103,201 $ 52,319 $ 8,170 $ 8,039 $ 263,881 March 31, 2019 Beginning balance $ 48,580 $ 29,052 $ 38,777 $ 6,103 $ 9,620 $ 132,132 Credit loss expense 11,929 (3,756 ) (2,352 ) 1,247 3,935 11,003 Charge-offs (2,688 ) — (60 ) (1,778 ) (5,697 ) (10,223 ) Recoveries 750 47 90 89 2,462 3,438 Net charge-offs (1,938 ) 47 30 (1,689 ) (3,235 ) (6,785 ) Ending balance $ 58,571 $ 25,343 $ 36,455 $ 5,661 $ 10,320 $ 136,350 |
Investment in Loans Related to Allowance for Loan Losses by Portfolio Segment Disaggregated Based on Impairment Methodology | The following table presents loans that were evaluated for expected credit losses on an individual basis and the related specific allocations, by loan portfolio segment as of March 31, 2020 and December 31, 2019 . March 31, 2020 December 31, 2019 Loan Balance Specific Allocations Loan Balance Specific Allocations Commercial and industrial $ 21,925 $ 9,205 $ 24,360 $ 7,849 Energy 28,330 — 65,244 20,246 Commercial real estate 11,669 3,404 9,274 383 Consumer real estate 1,423 — 570 — Consumer and other 20 19 5 5 Total $ 63,367 $ 12,628 $ 99,453 $ 28,483 |
Goodwill and Other Intangible_2
Goodwill and Other Intangible Assets (Tables) | 3 Months Ended | |||||||
Mar. 31, 2020 | ||||||||
Goodwill and Intangible Assets Disclosure [Abstract] | ||||||||
Schedule of Goodwill | <div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Goodwill is presented in the table below.</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="8" rowspan="1"></td></tr><tr><td style="width:63%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:16%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:16%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">March 31, 2020</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">December 31, 2019</font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Goodwill</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">654,952</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">654,952</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div></div></div> | |||||||
Schedule of Other Intangible Assets | <div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Other intangible assets are presented in the table below.</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="8" rowspan="1"></td></tr><tr><td style="width:63%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:16%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:16%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Other intangible assets:</font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Core deposits</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">1,832</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2,043</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Customer relationship</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">392</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">438</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2,224</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2,481</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div></div></div> | |||||||
Estimated Aggregate Future Amortization Expense for Intangible Assets | The estimated aggregate future amortization expense for intangible assets remaining as of March 31, 2020 is as follows: Remainder of 2020 $ 661 2021 697 2022 481 2023 282 2024 87 Thereafter 16 $ 2,224 |
Deposits (Tables)
Deposits (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Banking and Thrift [Abstract] | |
Schedule of Deposits | Deposits were as follows: March 31, Percentage of Total December 31, Percentage of Total Non-interest-bearing demand deposits: Commercial and individual $ 10,524,338 37.4 % $ 10,212,265 36.9 % Correspondent banks 221,761 0.8 246,181 0.9 Public funds 456,109 1.6 415,183 1.5 Total non-interest-bearing demand deposits 11,202,208 39.8 10,873,629 39.3 Interest-bearing deposits: Private accounts: Savings and interest checking 7,240,821 25.7 7,147,327 25.9 Money market accounts 7,995,061 28.4 7,888,433 28.5 Time accounts of $100,000 or more 773,373 2.8 736,481 2.7 Time accounts under $100,000 347,349 1.2 347,418 1.2 Total private accounts 16,356,604 58.1 16,119,659 58.3 Public funds: Savings and interest checking 479,629 1.7 548,399 2.0 Money market accounts 78,899 0.3 73,180 0.3 Time accounts of $100,000 or more 23,502 0.1 24,672 0.1 Time accounts under $100,000 25 — 25 — Total public funds 582,055 2.1 646,276 2.4 Total interest-bearing deposits 16,938,659 60.2 16,765,935 60.7 Total deposits $ 28,140,867 100.0 % $ 27,639,564 100.0 % |
Additional Information About Corporation's Deposits | The following table presents additional information about our deposits: March 31, December 31, Deposits from the Certificate of Deposit Account Registry Service (CDARS) deposits $ 364 $ 361 Deposits from foreign sources (primarily Mexico) 787,331 805,828 Deposits not covered by deposit insurance 13,592,104 13,115,796 |
Commitments and Contingencies (
Commitments and Contingencies (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Commitments and Contingencies Disclosure [Abstract] | |
Financial Instruments with Off-Balance-Sheet Risk | Financial instruments with off-balance-sheet risk were as follows: March 31, December 31, Commitments to extend credit $ 9,204,873 $ 9,306,043 Standby letters of credit 268,202 260,587 Deferred standby letter of credit fees 1,773 1,276 |
Commitments, Off-Balance-Sheet, Allowance for Credit Losses [Table Text Block] | The following table details activity in the allowance for credit losses on off-balance-sheet commitments. Three Months Ended 2020 2019 Beginning balance, prior to adoption of ASC 326 $ 500 $ 500 Impact of adopting ASC 326 39,377 — Credit loss expense 2,287 — Ending balance $ 42,164 $ 500 |
Lease Commitments, Components of Lease Expense [Table Text Block] | We lease certain office facilities and office equipment under operating leases. The components of total lease expense were as follows: Three Months Ended 2020 2019 Amortization of lease right-of-use assets $ 7,874 $ 5,796 Short-term lease expense 561 1,079 Non-lease components (including taxes, insurance, common maintenance, etc.) 2,927 1,733 Total $ 11,362 $ 8,608 |
Capital and Regulatory Matters
Capital and Regulatory Matters (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Banking and Thrift [Abstract] | |
Actual and Required Capital Ratios | The following tables present actual and required capital ratios as of March 31, 2020 and December 31, 2019 for Cullen/Frost and Frost Bank under the Basel III Capital Rules. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. See the 2019 Form 10-K for a more detailed discussion of the Basel III Capital Rules. After a review of risk-weight classifications during the first quarter of 2019, risk-weightings for certain loans were reclassified. Amounts reported as of December 31, 2019 have been revised to reflect these reclassifications. Actual Minimum Capital Required - Basel III Required to be Capital Ratio Capital Ratio Capital Ratio March 31, 2020 Common Equity Tier 1 to Risk-Weighted Assets Cullen/Frost $ 2,884,385 12.02 % $ 1,679,810 7.00 % $ 1,559,824 6.50 % Frost Bank 2,924,082 12.21 1,676,269 7.00 1,556,535 6.50 Tier 1 Capital to Risk-Weighted Assets Cullen/Frost 2,884,385 12.02 2,039,770 8.50 1,919,783 8.00 Frost Bank 2,924,082 12.21 2,035,469 8.50 1,915,736 8.00 Total Capital to Risk-Weighted Assets Cullen/Frost 3,352,464 13.97 2,519,715 10.50 2,399,729 10.00 Frost Bank 3,159,161 13.19 2,514,403 10.50 2,394,670 10.00 Leverage Ratio Cullen/Frost 2,884,385 8.84 1,305,429 4.00 1,631,786 5.00 Frost Bank 2,924,082 8.97 1,304,257 4.00 1,630,322 5.00 December 31, 2019 Common Equity Tier 1 to Risk-Weighted Assets Cullen/Frost $ 2,857,250 12.36 % $ 1,617,886 7.00 % $ 1,502,323 6.50 % Frost Bank 2,958,326 12.82 1,615,206 7.00 1,499,834 6.50 Tier 1 Capital to Risk-Weighted Assets Cullen/Frost 3,001,736 12.99 1,964,576 8.50 1,849,013 8.00 Frost Bank 2,958,326 12.82 1,961,322 8.50 1,845,950 8.00 Total Capital to Risk-Weighted Assets Cullen/Frost 3,367,403 14.57 2,426,829 10.50 2,311,266 10.00 Frost Bank 3,090,993 13.40 2,422,809 10.50 2,307,438 10.00 Leverage Ratio Cullen/Frost 3,001,736 9.28 1,293,188 4.00 1,616,485 5.00 Frost Bank 2,958,326 9.15 1,292,743 4.00 1,615,929 5.00 |
Derivative Financial Instrume_2
Derivative Financial Instruments (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
Schedule of Notional Amounts and Estimated Fair Values of Interest Rate Derivative Contracts Outstanding | The notional amounts and estimated fair values of interest rate derivative contracts are presented in the following table. The fair values of interest rate derivative contracts are estimated utilizing internal valuation models with observable market data inputs, or as determined by the Chicago Mercantile Exchange (“CME”) for centrally cleared derivative contracts. CME rules legally characterize variation margin payments for centrally cleared derivatives as settlements of the derivatives' exposure rather than collateral. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. Variation margin, as determined by the CME, is settled daily. As a result, derivative contracts that clear through the CME have an estimated fair value of zero as of March 31, 2020 and December 31, 2019 . March 31, 2020 December 31, 2019 Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Derivatives designated as hedges of fair value: Financial institution counterparties: Loan/lease interest rate swaps – assets $ — $ — $ 2,545 $ 6 Loan/lease interest rate swaps – liabilities 4,732 (219 ) 6,000 (138 ) Non-hedging interest rate derivatives: Financial institution counterparties: Loan/lease interest rate swaps – assets — — 122,788 67 Loan/lease interest rate swaps – liabilities 1,191,926 (37,403 ) 1,002,860 (19,483 ) Loan/lease interest rate caps – assets 155,597 682 107,835 266 Customer counterparties: Loan/lease interest rate swaps – assets 1,191,926 97,232 1,002,860 43,857 Loan/lease interest rate swaps – liabilities — — 122,788 (310 ) Loan/lease interest rate caps – liabilities 155,597 (682 ) 107,835 (266 ) |
Schedule of Weighted-Average Rates Paid and Received for Interest Rate Swaps Outstanding | The weighted-average rates paid and received for interest rate swaps outstanding at March 31, 2020 were as follows: Weighted-Average Interest Rate Paid Interest Rate Received Interest rate swaps: Fair value hedge loan/lease interest rate swaps 3.54 % 1.26 % Non-hedging interest rate swaps – financial institution counterparties 4.05 2.93 Non-hedging interest rate swaps – customer counterparties 2.93 4.05 |
Schedule of Notional Amounts and Estimated Fair Values of Commodity Derivative Positions | The notional amounts and estimated fair values of non-hedging commodity swap and option derivative positions outstanding are presented in the following table. We obtain dealer quotations and use internal valuation models with observable market data inputs to value our commodity derivative positions. March 31, 2020 December 31, 2019 Notional Units Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Financial institution counterparties: Oil – assets Barrels 2,639 $ 61,479 1,214 $ 2,796 Oil – liabilities Barrels 576 (634 ) 2,148 (6,916 ) Natural gas – assets MMBTUs 5,807 2,455 8,295 2,131 Natural gas – liabilities MMBTUs 4,313 (346 ) 2,689 (70 ) Customer counterparties: Oil – assets Barrels 576 645 2,172 7,208 Oil – liabilities Barrels 2,639 (61,087 ) 1,190 (2,652 ) Natural gas – assets MMBTUs 4,313 397 2,689 83 Natural gas – liabilities MMBTUs 5,807 (2,392 ) 8,295 (2,039 ) |
Notional Amounts and Fair Values of Open Foreign Currency Forward Contracts | The notional amounts and fair values of open foreign currency forward contracts were as follows: March 31, 2020 December 31, 2019 Notional Currency Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Financial institution counterparties: Forward contracts – liabilities CAD 2,821 $ (16 ) 4,593 $ (33 ) Customer counterparties: Forward contracts – assets CAD 2,814 24 4,583 45 |
Schedule of Amounts Related to Interest Rate Derivatives Designated as Hedges of Fair Value | Amounts included in the consolidated statements of income related to interest rate derivatives designated as hedges of fair value were as follows: Three Months Ended 2020 2019 Commercial loan/lease interest rate swaps: Amount of gain (loss) included in interest income on loans $ (8 ) $ 26 Amount of (gain) loss included in other non-interest expense 1 — |
Schedule of Amounts Related to Non-Hedging Interest Rate and Commodity Derivatives | Amounts included in the consolidated statements of income related to non-hedge related derivative instruments are presented in the table below. Three Months Ended 2020 2019 Non-hedging interest rate derivatives: Other non-interest income $ 2,039 $ 586 Other non-interest expense — — Non-hedging commodity derivatives: Other non-interest income 139 103 Non-hedging foreign currency derivatives: Other non-interest income 7 17 Non-hedging put options: Other non-interest income 5,980 — |
Balance Sheet Offsetting (Table
Balance Sheet Offsetting (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
Financial Instruments Eligible for Offset Consolidated Balance Sheet | Information about financial instruments that are eligible for offset in the consolidated balance sheet as of March 31, 2020 is presented in the following tables. Gross Amount Recognized Gross Amount Offset Net Amount Recognized March 31, 2020 Financial assets: Derivatives: Loan/lease interest rate swaps and caps $ 682 $ — $ 682 Commodity swaps and options 63,934 — 63,934 Foreign currency forward contracts — — — Total derivatives 64,616 — 64,616 Resell agreements 20,000 — 20,000 Total $ 84,616 $ — $ 84,616 Financial liabilities: Derivatives: Loan/lease interest rate swaps $ 37,622 $ — $ 37,622 Commodity swaps and options 980 — 980 Foreign currency forward contracts 16 — 16 Total derivatives 38,618 — 38,618 Repurchase agreements 1,146,478 — 1,146,478 Total $ 1,185,096 $ — $ 1,185,096 Information about financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2019 is presented in the following tables. Gross Amount Recognized Gross Amount Offset Net Amount Recognized December 31, 2019 Financial assets: Derivatives: Loan/lease interest rate swaps and caps $ 339 $ — $ 339 Commodity swaps and options 4,927 — 4,927 Total derivatives 5,266 — 5,266 Resell agreements 31,299 — 31,299 Total $ 36,565 $ — $ 36,565 Financial liabilities: Derivatives: Loan/lease interest rate swaps $ 19,621 $ — $ 19,621 Commodity swaps and options 6,986 — 6,986 Foreign currency forward contracts 33 — 33 Total derivatives 26,640 — 26,640 Repurchase agreements 1,668,142 — 1,668,142 Total $ 1,694,782 $ — $ 1,694,782 |
Financial Instruments Derivative Assets Liabilities and Resell Agreements Net of Amount Not Offset | Gross Amounts Not Offset Net Amount Recognized Financial Instruments Collateral Net Amount December 31, 2019 Financial assets: Derivatives: Counterparty A $ 39 $ (39 ) $ — $ — Counterparty B 1,650 (1,650 ) — — Counterparty C 1 (1 ) — — Other counterparties 3,576 (3,546 ) — 30 Total derivatives 5,266 (5,236 ) — 30 Resell agreements 31,299 — (31,299 ) — Total $ 36,565 $ (5,236 ) $ (31,299 ) $ 30 Financial liabilities: Derivatives: Counterparty A $ 5,192 $ (39 ) $ (5,153 ) $ — Counterparty B 7,424 (1,650 ) (5,774 ) — Counterparty C 135 (1 ) (134 ) — Other counterparties 13,889 (3,546 ) (10,343 ) — Total derivatives 26,640 (5,236 ) (21,404 ) — Repurchase agreements 1,668,142 — (1,668,142 ) — Total $ 1,694,782 $ (5,236 ) $ (1,689,546 ) $ — Gross Amounts Not Offset Net Amount Recognized Financial Instruments Collateral Net Amount March 31, 2020 Financial assets: Derivatives: Counterparty A $ 10 $ (10 ) $ — $ — Counterparty B 10,483 (10,483 ) — — Other counterparties 54,123 (8,728 ) (45,090 ) 305 Total derivatives 64,616 (19,221 ) (45,090 ) 305 Resell agreements 20,000 — (20,000 ) — Total $ 84,616 $ (19,221 ) $ (65,090 ) $ 305 Financial liabilities: Derivatives: Counterparty A $ 7,606 $ (10 ) $ (7,580 ) $ 16 Counterparty B 11,111 (10,483 ) (580 ) 48 Counterparty C 146 — (146 ) — Other counterparties 19,755 (8,728 ) (11,027 ) — Total derivatives 38,618 (19,221 ) (19,333 ) 64 Repurchase agreements 1,146,478 — (1,146,478 ) — Total $ 1,185,096 $ (19,221 ) $ (1,165,811 ) $ 64 |
Remaining Contractual Maturity of the Securities Sold Under Agreement [Table Text Block] | The remaining contractual maturity of repurchase agreements in the consolidated balance sheets as of March 31, 2020 and December 31, 2019 is presented in the following tables. Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater than 90 Days Total March 31, 2020 Repurchase agreements: Residential mortgage-backed securities $ 1,146,478 $ — $ — $ — $ 1,146,478 Total borrowings $ 1,146,478 $ — $ — $ — $ 1,146,478 Gross amount of recognized liabilities for repurchase agreements $ 1,146,478 Amounts related to agreements not included in offsetting disclosures above $ — December 31, 2019 Repurchase agreements: U.S. Treasury $ 435,904 $ — $ — $ — $ 435,904 Residential mortgage-backed securities 1,232,238 — — — 1,232,238 Total borrowings $ 1,668,142 $ — $ — $ — $ 1,668,142 Gross amount of recognized liabilities for repurchase agreements $ 1,668,142 Amounts related to agreements not included in offsetting disclosures above $ — |
Stock-Based Compensation (Table
Stock-Based Compensation (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Share-based Payment Arrangement [Abstract] | |
Summary of Activity in Corporation's Active Stock Plans | A combined summary of activity in our active stock plans is presented in the table. Performance stock units outstanding are presented assuming attainment of the maximum payout rate as set forth by the performance criteria. As of March 31, 2020 , there were 1,115,490 shares remaining available for grant for future stock-based compensation awards. Director Deferred Stock Units Outstanding Non-Vested Stock Awards/Stock Units Outstanding Performance Stock Units Outstanding Stock Options Outstanding Number of Units Weighted- Average Fair Value at Grant Number of Shares/Units Weighted- Average Fair Value at Grant Number of Units Weighted- Average Fair Value at Grant Number of Shares Weighted- Average Exercise Price Balance, January 1, 2020 55,370 $ 74.76 440,647 $ 90.22 177,288 $ 83.48 1,980,866 $ 64.60 Authorized — — — — — — — — Granted — — 458 65.43 — — — — Exercised/vested — — — — (41,755 ) 69.70 (24,460 ) 59.81 Forfeited/expired — — (1,438 ) 88.69 (6,894 ) 81.33 (2,000 ) 72.02 Balance, March 31, 2020 55,370 $ 74.76 439,667 $ 90.20 128,639 $ 88.07 1,954,406 $ 64.65 |
Shares Issued in Connection with Stock Compensation Awards | Shares issued in connection with stock compensation awards along with other related information were as follows: Three Months Ended 2020 2019 New shares issued from available authorized shares — — Issued from available treasury stock 66,215 100,865 Total 66,215 100,865 Proceeds from stock option exercises $ 1,463 $ 4,885 |
Share-based Payment Arrangement, Cost by Plan [Table Text Block] | Stock-based compensation expense and the related income tax benefit is presented in the following table. Three Months Ended 2020 2019 Stock options $ — $ 382 Non-vested stock awards/stock units 2,264 2,135 Performance stock units 248 1,137 Total $ 2,512 $ 3,654 Income tax benefit $ 465 $ 584 |
Unrecognized Stock-Based Compensation Expense | Unrecognized stock-based compensation expense at March 31, 2020 is presented in the table below. Unrecognized stock-based compensation expense related to performance stock units is presented assuming attainment of the maximum payout rate as set forth by the performance criteria. Non-vested stock awards/stock units $ 16,524 Performance stock units 5,536 Total $ 22,060 |
Earnings Per Common Share (Tabl
Earnings Per Common Share (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Earnings Per Share [Abstract] | |
Basic and Diluted Earnings Per Common Share | The following table presents a reconciliation of net income available to common shareholders, net earnings allocated to common stock and the number of shares used in the calculation of basic and diluted earnings per common share. Three Months Ended 2020 2019 Net income $ 54,753 $ 116,496 Less: Preferred stock dividends 2,016 2,016 Redemption of preferred stock 5,514 — Net income available to common shareholders 47,223 114,480 Less: Earnings allocated to participating securities 445 980 Net earnings allocated to common stock $ 46,778 $ 113,500 Distributed earnings allocated to common stock $ 44,512 $ 42,238 Undistributed earnings allocated to common stock 2,266 71,262 Net earnings allocated to common stock $ 46,778 $ 113,500 Weighted-average shares outstanding for basic earnings per common share 62,642,682 63,009,060 Dilutive effect of stock compensation 407,154 818,896 Weighted-average shares outstanding for diluted earnings per common share 63,049,836 63,827,956 |
Defined Benefit Plans (Tables)
Defined Benefit Plans (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Retirement Benefits [Abstract] | |
Net Periodic Cost (Benefit) | The components of the combined net periodic expense (benefit) for our defined benefit pension plans are presented in the table below. Three Months Ended 2020 2019 Expected return on plan assets, net of expenses $ (3,072 ) $ (2,693 ) Interest cost on projected benefit obligation 1,252 1,618 Net amortization and deferral 1,330 1,406 Net periodic expense (benefit) $ (490 ) $ 331 |
Income Taxes (Tables)
Income Taxes (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Income Tax Disclosure [Abstract] | |
Income Tax Expense | Income tax expense was as follows: Three Months Ended 2020 2019 Current income tax expense (benefit) $ 29,412 $ 14,999 Deferred income tax expense (benefit) (26,089 ) (1,044 ) Income tax expense, as reported $ 3,323 $ 13,955 Effective tax rate 5.7 % 10.7 % |
Other Comprehensive Income (L_2
Other Comprehensive Income (Loss) (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Equity [Abstract] | |
Component of Other Comprehensive Income (Loss) | The before and after tax amounts allocated to each component of other comprehensive income (loss) are presented in the following table. Reclassification adjustments related to securities available for sale are included in net gain (loss) on securities transactions in the accompanying consolidated statements of income. Reclassification adjustments related to defined-benefit post-retirement benefit plans are included in the computation of net periodic pension expense (see Note 12 – Defined Benefit Plans). Three Months Ended Three Months Ended Before Tax Amount Tax Expense, (Benefit) Net of Tax Amount Before Tax Amount Tax Expense, (Benefit) Net of Tax Amount Securities available for sale and transferred securities: Change in net unrealized gain/loss during the period $ 230,118 $ 48,325 $ 181,793 $ 198,146 $ 41,611 $ 156,535 Change in net unrealized gain on securities transferred to held to maturity (377 ) (79 ) (298 ) (344 ) (72 ) (272 ) Reclassification adjustment for net (gains) losses included in net income (108,989 ) (22,888 ) (86,101 ) — — — Total securities available for sale and transferred securities 120,752 25,358 95,394 197,802 41,539 156,263 Defined-benefit post-retirement benefit plans: Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) 1,330 279 1,051 1,406 295 1,111 Total defined-benefit post-retirement benefit plans 1,330 279 1,051 1,406 295 1,111 Total other comprehensive income (loss) $ 122,082 $ 25,637 $ 96,445 $ 199,208 $ 41,834 $ 157,374 |
Schedule of Accumulated Other Comprehensive Income, Net of Tax | Activity in accumulated other comprehensive income (loss), net of tax, was as follows: Securities Available For Sale Defined Benefit Plans Accumulated Other Comprehensive Income Balance January 1, 2020 $ 313,304 $ (45,934 ) $ 267,370 Other comprehensive income (loss) before reclassifications 181,495 — 181,495 Reclassification of amounts included in net income (86,101 ) 1,051 (85,050 ) Net other comprehensive income (loss) during period 95,394 1,051 96,445 Balance at March 31, 2020 $ 408,698 $ (44,883 ) $ 363,815 Balance January 1, 2019 $ (16,103 ) $ (47,497 ) $ (63,600 ) Other comprehensive income (loss) before reclassifications 156,263 — 156,263 Reclassification of amounts included in net income — 1,111 1,111 Net other comprehensive income (loss) during period 156,263 1,111 157,374 Balance at March 31, 2019 $ 140,160 $ (46,386 ) $ 93,774 |
Operating Segments (Tables)
Operating Segments (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Segment Reporting [Abstract] | |
Summary of Operating Results by Segment | Summarized operating results by segment were as follows: Banking Frost Wealth Advisors Non-Banks Consolidated Revenues from (expenses to) external customers: Three months ended: March 31, 2020 $ 419,429 $ 40,607 $ (2,600 ) $ 457,436 March 31, 2019 308,613 37,351 (2,710 ) 343,254 Net income (loss): Three months ended: March 31, 2020 $ 52,024 $ 5,587 $ (2,858 ) $ 54,753 March 31, 2019 112,917 6,400 (2,821 ) 116,496 |
Fair Value Measurements (Tables
Fair Value Measurements (Tables) | 3 Months Ended |
Mar. 31, 2020 | |
Fair Value Disclosures [Abstract] | |
Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis | The table below summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 , segregated by the level of the valuation inputs within the fair value hierarchy of ASC Topic 820 utilized to measure fair value. Level 1 Level 2 Level 3 Total Fair March 31, 2020 Securities available for sale: U.S. Treasury $ 1,167,264 $ — $ — $ 1,167,264 Residential mortgage-backed securities — 2,089,946 — 2,089,946 States and political subdivisions — 7,167,866 — 7,167,866 Other — 42,901 — 42,901 Trading account securities: U.S. Treasury 24,491 — — 24,491 States and political subdivisions — 1,430 — 1,430 Derivative assets: Interest rate swaps, caps and floors — 97,914 — 97,914 Commodity swaps and options — 64,976 — 64,976 Foreign currency forward contracts 24 — — 24 Derivative liabilities: Interest rate swaps, caps and floors — 38,304 — 38,304 Commodity swaps and options — 64,459 — 64,459 Foreign currency forward contracts 16 — — 16 December 31, 2019 Securities available for sale: U.S. Treasury $ 1,948,133 $ — $ — $ 1,948,133 Residential mortgage-backed securities — 2,207,594 — 2,207,594 States and political subdivisions — 7,070,997 — 7,070,997 Other — 42,867 — 42,867 Trading account securities: U.S. Treasury 24,298 — — 24,298 Derivative assets: Interest rate swaps, caps and floors — 44,196 — 44,196 Commodity swaps and options — 12,218 — 12,218 Foreign currency forward contracts 45 — — 45 Derivative liabilities: Interest rate swaps, caps and floors — 20,197 — 20,197 Commodity swaps and options — 11,677 — 11,677 Foreign currency forward contracts 33 — — 33 |
Impaired Loans Remeasured And Reported At Fair Value Specific Valuation Allowance Allocation Method Of Underlying Collateral [Table Text Block] | The following table presents collateral dependent loans that were remeasured and reported at fair value through a specific allocation of the allowance for credit losses on loans based upon the fair value of the underlying collateral during the reported periods. Three Months Ended Three Months Ended Level 2 Level 3 Level 2 Level 3 Carrying value before allocations $ 1,919 $ 3,867 $ 11,487 $ 37,525 Specific allocations 70 (244 ) (256 ) (3,441 ) Fair value $ 1,989 $ 3,623 $ 11,231 $ 34,084 |
Foreclosed Assets Remeasured and Reported at Fair Value | The following table presents foreclosed assets that were remeasured and reported at fair value during the reported periods: Three Months Ended 2020 2019 Foreclosed assets remeasured subsequent to initial recognition: Carrying value of foreclosed assets prior to remeasurement $ 328 $ — Write-downs included in other non-interest expense (231 ) — Fair value $ 97 $ — |
Estimated Fair Values of Financial Instruments | The estimated fair values of financial instruments that are reported at amortized cost in our consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows: March 31, 2020 December 31, 2019 Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Financial assets: Level 2 inputs: Cash and cash equivalents $ 4,195,585 $ 4,195,585 $ 3,788,181 $ 3,788,181 Securities held to maturity 1,984,149 2,057,879 2,030,005 2,048,675 Cash surrender value of life insurance policies 188,078 188,078 187,156 187,156 Accrued interest receivable 123,995 123,995 183,850 183,850 Level 3 inputs: Loans, net 15,074,379 15,246,193 14,618,165 14,654,615 Financial liabilities: Level 2 inputs: Deposits 28,140,867 28,150,786 27,639,564 27,641,255 Federal funds purchased and repurchase agreements 1,170,978 1,170,978 1,695,342 1,695,342 Junior subordinated deferrable interest debentures 136,314 137,115 136,299 137,115 Subordinated notes payable and other borrowings 98,904 102,250 98,865 89,077 Accrued interest payable 10,684 10,684 12,393 12,393 |
Significant Accounting Polici_4
Significant Accounting Policies - Additional Cash Flow Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Accounting Policies [Abstract] | ||
Cash paid for interest | $ 23,168 | $ 34,402 |
Cash paid for income taxes | 0 | 0 |
Unsettled securities transactions | 11,196 | 7,612 |
Right-of-use lease assets obtained in exchange for lessee operating lease liabilities | $ 9,892 | $ 170,479 |
Significant Accounting Polici_5
Significant Accounting Policies Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands | Jan. 01, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018 |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | $ (29,300) | ||||
Cumulative effect of new accounting principle in period of adoption | $ (29,252) | $ (14,672) | |||
Debt Securities, Threshold Period Past Due | 90 days | ||||
Operating Lease, Right-of-Use Asset | $ 302,000 | 297,700 | $ 170,500 | ||
Operating Lease, Liability | $ 331,500 | 323,700 | 174,400 | ||
Retained Earnings [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative effect of new accounting principle in period of adoption | $ (29,252) | $ (14,700) | $ (14,672) |
Significant Accounting Polici_6
Significant Accounting Policies Significant Accounting Policies - Impact of Adoption of New Accounting Standard Related to CECL (Details) - USD ($) $ in Thousands | Jan. 01, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018 |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ (200) | $ 0 | |||
Financing Receivable, Allowance for Credit Loss | 263,881 | 132,167 | |||
Off-Balance Sheet, Credit Loss, Liability | 42,164 | 500 | $ 500 | $ 500 | |
Cumulative Effect on Retained Earnings, Net of Tax | $ (29,300) | ||||
Commercial Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 92,152 | 51,593 | 58,571 | 48,580 | |
Commercial and Industrial Total Energy Loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 103,201 | 37,382 | 25,343 | 29,052 | |
Commercial Real Estate Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 52,319 | 31,037 | 36,455 | 38,777 | |
Total consumer real estate loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 8,170 | 4,113 | 5,661 | 6,103 | |
Consumer Loan [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 8,039 | 8,042 | 10,320 | 9,620 | |
Loans Receivable [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 263,881 | 132,167 | $ 136,350 | $ 132,132 | |
Residential Mortgage Backed Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 | |||
US States and Political Subdivisions Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | (200) | 0 | |||
Other Investments [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 | |||
Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ 200 | $ 0 | |||
Pre-Adoption Allowance [Member] | Commercial Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 51,593 | ||||
Pre-Adoption Allowance [Member] | Commercial and Industrial Total Energy Loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 37,382 | ||||
Pre-Adoption Allowance [Member] | Commercial Real Estate Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 31,037 | ||||
Pre-Adoption Allowance [Member] | Total consumer real estate loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 4,113 | ||||
Pre-Adoption Allowance [Member] | Consumer Loan [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 8,042 | ||||
Pre-Adoption Allowance [Member] | Loans Receivable [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 132,167 | ||||
Pre-Adoption Allowance [Member] | US Treasury Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Pre-Adoption Allowance [Member] | Residential Mortgage Backed Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Pre-Adoption Allowance [Member] | US States and Political Subdivisions Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Pre-Adoption Allowance [Member] | Other Investments [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Pre-Adoption Allowance [Member] | Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Pre-Adoption Allowance [Member] | Commitments to Extend Credit [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Off-Balance Sheet, Credit Loss, Liability | 500 | ||||
Impact of Adoption [Member] | Commercial Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 21,263 | ||||
Impact of Adoption [Member] | Commercial and Industrial Total Energy Loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | (10,453) | ||||
Impact of Adoption [Member] | Commercial Real Estate Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | (13,519) | ||||
Impact of Adoption [Member] | Total consumer real estate loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 2,392 | ||||
Impact of Adoption [Member] | Consumer Loan [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | (2,248) | ||||
Impact of Adoption [Member] | Loans Receivable [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | (2,565) | ||||
Impact of Adoption [Member] | US Treasury Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Impact of Adoption [Member] | Residential Mortgage Backed Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Impact of Adoption [Member] | US States and Political Subdivisions Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 215 | ||||
Impact of Adoption [Member] | Other Investments [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Impact of Adoption [Member] | Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 215 | ||||
Impact of Adoption [Member] | Commitments to Extend Credit [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Off-Balance Sheet, Credit Loss, Liability | 39,377 | ||||
Post-Adoption Allowance [Member] | Commercial Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 72,856 | ||||
Post-Adoption Allowance [Member] | Commercial and Industrial Total Energy Loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 26,929 | ||||
Post-Adoption Allowance [Member] | Commercial Real Estate Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 17,518 | ||||
Post-Adoption Allowance [Member] | Total consumer real estate loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 6,505 | ||||
Post-Adoption Allowance [Member] | Consumer Loan [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 5,794 | ||||
Post-Adoption Allowance [Member] | Loans Receivable [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Financing Receivable, Allowance for Credit Loss | 129,602 | ||||
Post-Adoption Allowance [Member] | US Treasury Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Post-Adoption Allowance [Member] | Residential Mortgage Backed Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Post-Adoption Allowance [Member] | US States and Political Subdivisions Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 215 | ||||
Post-Adoption Allowance [Member] | Other Investments [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | ||||
Post-Adoption Allowance [Member] | Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 215 | ||||
Post-Adoption Allowance [Member] | Commitments to Extend Credit [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Off-Balance Sheet, Credit Loss, Liability | 39,877 | ||||
Retained Earnings [Member] | Commercial Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | (16,798) | ||||
Retained Earnings [Member] | Commercial and Industrial Total Energy Loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | 8,258 | ||||
Retained Earnings [Member] | Commercial Real Estate Portfolio Segment [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | 10,680 | ||||
Retained Earnings [Member] | Total consumer real estate loans [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | (1,890) | ||||
Retained Earnings [Member] | Consumer Loan [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | 1,776 | ||||
Retained Earnings [Member] | Loans Receivable [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | 2,026 | ||||
Retained Earnings [Member] | US Treasury Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | 0 | ||||
Retained Earnings [Member] | Residential Mortgage Backed Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | 0 | ||||
Retained Earnings [Member] | US States and Political Subdivisions Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | (170) | ||||
Retained Earnings [Member] | Other Investments [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | 0 | ||||
Retained Earnings [Member] | Debt Securities [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | (170) | ||||
Retained Earnings [Member] | Commitments to Extend Credit [Member] | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative Effect on Retained Earnings, Net of Tax | $ (31,108) |
Securities - Additional Informa
Securities - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Dec. 31, 2019 | |
Schedule Of Marketable Securities [Line Items] | ||
Securities available for sale, estimated fair value | $ 10,467,977 | $ 11,269,591 |
Net unamortized unrealized gain on transferred securities included in accumulated other comprehensive income Pre Tax | 4,400 | 4,800 |
Net unamortized unrealized gain on transferred securities included in accumulated other comprehensive income, net of tax | $ 3,500 | 3,800 |
Percent Municipal Bond Portfolio Issued By Political Subdivision Or Agencies Within State Of Texas Guaranteed By Texas Permanent School Fund Or Have Been Pre-Refunded | 70.80% | |
Held-to-maturity Securities [Member] | ||
Schedule Of Marketable Securities [Line Items] | ||
Carry value of securities pledged | $ 647,100 | 561,400 |
Accrued interest receivable | 12,100 | 21,100 |
Reclassified To Held To Maturity [Member] | ||
Schedule Of Marketable Securities [Line Items] | ||
Securities available for sale, estimated fair value | 377,800 | |
Available for sale securities reclassified to held to maturity, unrealized gain | 3,300 | |
Available for sale securities reclassified to held to maturity, unrealized gain net of tax | 2,600 | |
Available-for-sale Securities [Member] | ||
Schedule Of Marketable Securities [Line Items] | ||
Carry value of securities pledged | 2,600,000 | 3,400,000 |
Accrued interest receivable | $ 69,500 | $ 115,900 |
Securities Securities - Amortiz
Securities Securities - Amortized Cost, Allowance for Credit Losses and Estimated Fair Value of Securities Held to Maturity (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Schedule of Investments [Line Items] | ||
Held to Maturity, Amortized Cost | $ 1,984,349 | $ 2,030,005 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 73,530 | 28,931 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 10,261 |
Debt Securities, Held-to-maturity, Fair Value | 2,057,879 | 2,048,675 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | (200) | 0 |
Debt Securities, Held-to-Maturity Net Carrying Amount | 1,984,149 | 2,030,005 |
Residential Mortgage Backed Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Held to Maturity, Amortized Cost | 530,396 | 530,861 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 37,234 | 22 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 9,365 |
Debt Securities, Held-to-maturity, Fair Value | 567,630 | 521,518 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 |
Debt Securities, Held-to-Maturity Net Carrying Amount | 530,396 | 530,861 |
US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Held to Maturity, Amortized Cost | 1,452,453 | 1,497,644 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 36,296 | 28,909 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 896 |
Debt Securities, Held-to-maturity, Fair Value | 1,488,749 | 1,525,657 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | (200) | 0 |
Debt Securities, Held-to-Maturity Net Carrying Amount | 1,452,253 | 1,497,644 |
Other Investments [Member] | ||
Schedule of Investments [Line Items] | ||
Held to Maturity, Amortized Cost | 1,500 | 1,500 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 0 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 0 |
Debt Securities, Held-to-maturity, Fair Value | 1,500 | 1,500 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 |
Debt Securities, Held-to-Maturity Net Carrying Amount | $ 1,500 | $ 1,500 |
Securities Securities - Moody's
Securities Securities - Moody's and/or Standard & Poor's Bond Rating (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | $ 1,984,349 | $ 2,030,005 |
US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 1,452,453 | 1,497,644 |
Other Investments [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 1,500 | $ 1,500 |
Aaa/AAA [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 1,265,834 | |
Aaa/AAA [Member] | Other Investments [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
Aa/AA [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 118,271 | |
Aa/AA [Member] | Other Investments [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
A [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 68,348 | |
A [Member] | Other Investments [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
Not rated [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
Not rated [Member] | Other Investments [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 1,500 | |
Not Guaranteed or Pre-Refunded [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 318,379 | |
Not Guaranteed or Pre-Refunded [Member] | Aaa/AAA [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 131,760 | |
Not Guaranteed or Pre-Refunded [Member] | Aa/AA [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 118,271 | |
Not Guaranteed or Pre-Refunded [Member] | A [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 68,348 | |
Not Guaranteed or Pre-Refunded [Member] | Not rated [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
Guaranteed by the Texas PSF [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 849,396 | |
Guaranteed by the Texas PSF [Member] | Aaa/AAA [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 849,396 | |
Guaranteed by the Texas PSF [Member] | Aa/AA [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
Guaranteed by the Texas PSF [Member] | A [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
Guaranteed by the Texas PSF [Member] | Not rated [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
Pre-Refunded [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 284,678 | |
Pre-Refunded [Member] | Aaa/AAA [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 284,678 | |
Pre-Refunded [Member] | Aa/AA [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
Pre-Refunded [Member] | A [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | 0 | |
Pre-Refunded [Member] | Not rated [Member] | US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Held-to-maturity Securities [Line Items] | ||
Debt Securities, Held-to-maturity | $ 0 |
Securities Securities - Allowan
Securities Securities - Allowance for Credit Losses on Held to Maturity Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | ||
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019 | |
Schedule of Held-to-maturity Securities [Line Items] | |||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ (200) | $ 0 | |
Impact of adopting ASC 326 | 39,377 | $ 0 | |
Debt Securities [Member] | |||
Schedule of Held-to-maturity Securities [Line Items] | |||
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 200 | $ 0 | |
Impact of adopting ASC 326 | 215 | ||
Credit loss expense (benefit) | $ (15) |
Securities Securities - Amort_2
Securities Securities - Amortized Cost, Allowance for Credit Losses and Estimated Fair Value of Securities Available for Sale (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | $ 9,955,026 | $ 10,877,769 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 513,140 | 405,399 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 189 | 13,577 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 |
Securities available for sale, estimated fair value | 10,467,977 | 11,269,591 |
US Treasury Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | 1,117,523 | 1,941,283 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 49,741 | 18,934 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 12,084 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 |
Securities available for sale, estimated fair value | 1,167,264 | 1,948,133 |
Residential Mortgage Backed Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | 2,009,523 | 2,176,275 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 80,423 | 32,608 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 1,289 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 |
Securities available for sale, estimated fair value | 2,089,946 | 2,207,594 |
US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | 6,785,079 | 6,717,344 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 382,976 | 353,857 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 189 | 204 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 |
Securities available for sale, estimated fair value | 7,167,866 | 7,070,997 |
Other Investments [Member] | ||
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Amortized Cost Basis | 42,901 | 42,867 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 0 | 0 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 0 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0 |
Securities available for sale, estimated fair value | $ 42,901 | $ 42,867 |
Securities - Securities Availab
Securities - Securities Available for Sale, with Unrealized Losses Segregated by Length of Impairment (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Schedule of Available-for-Sale Securities [Line Items] | ||
Available for Sale, Less than 12 Months, Estimated Fair Value | $ 67,949 | |
Available for Sale, Less than 12 Months, Unrealized Losses | 189 | |
Available for Sale, More than 12 Months, Estimated Fair Value | 0 | |
Available for Sale, More than 12 Months, Unrealized Losses | 0 | |
Available for Sale, Total Estimated Fair Value | 67,949 | |
Available-for-sale Securities, Gross Unrealized Loss, before Tax | 189 | $ 13,577 |
States and political subdivisions [Member] | ||
Schedule of Available-for-Sale Securities [Line Items] | ||
Available for Sale, Less than 12 Months, Estimated Fair Value | 67,949 | |
Available for Sale, Less than 12 Months, Unrealized Losses | 189 | |
Available for Sale, More than 12 Months, Estimated Fair Value | 0 | |
Available for Sale, More than 12 Months, Unrealized Losses | 0 | |
Available for Sale, Total Estimated Fair Value | 67,949 | |
Available-for-sale Securities, Gross Unrealized Loss, before Tax | $ 189 | $ 204 |
Securities - Amortized Cost and
Securities - Amortized Cost and Estimated Fair Value of Securities, Excluding Trading Securities, Presented by Contractual Maturity (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Schedule of Investments [Line Items] | ||
Held to Maturity, Due in one year or less, Amortized Cost | $ 25,324 | |
Held to Maturity, Due after one year through five years, Amortized Cost | 172,218 | |
Held to Maturity, Due after five years through ten years, Amortized Cost | 1,013,101 | |
Held to Maturity, Due after ten years, Amortized Cost | 773,706 | |
Held to Maturity, Amortized Cost | 1,984,349 | $ 2,030,005 |
Held to Maturity, Due in one year or less, Estimated Fair Value | 25,579 | |
Held to Maturity, Due after one year through five years, Estimated Fair Value | 176,731 | |
Held to Maturity, Due after five years through ten years, Estimated Fair Value | 1,060,630 | |
Held to Maturity, Due after ten years, Estimated Fair Value | 794,939 | |
Held to Maturity, Estimated Fair Value | 2,057,879 | 2,048,675 |
Available-for-sale Securities, Due in one year or less, Amortized Cost | 284,689 | |
Available for Sale, Due after one year through five years, Amortized Cost | 1,372,248 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 654,275 | |
Available for Sale, Due after ten years, Amortized Cost | 7,600,913 | |
Available for Sale, Amortized Cost | 9,955,026 | 10,877,769 |
Available for Sale, Due in one year or less, Estimated Fair Value | 286,538 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 1,435,202 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 693,124 | |
Available for Sale, Due after ten years, Estimated Fair Value | 8,010,212 | |
Securities available for sale, estimated fair value | 10,467,977 | 11,269,591 |
US Treasury Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Available-for-sale Securities, Due in one year or less, Amortized Cost | 33,964 | |
Available for Sale, Due after one year through five years, Amortized Cost | 1,083,559 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 0 | |
Available for Sale, Due after ten years, Amortized Cost | 0 | |
Available for Sale, Amortized Cost | 1,117,523 | 1,941,283 |
Available for Sale, Due in one year or less, Estimated Fair Value | 34,181 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 1,133,083 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 0 | |
Available for Sale, Due after ten years, Estimated Fair Value | 0 | |
Securities available for sale, estimated fair value | 1,167,264 | 1,948,133 |
Residential Mortgage Backed Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Held to Maturity, Due in one year or less, Amortized Cost | 0 | |
Held to Maturity, Due after one year through five years, Amortized Cost | 332 | |
Held to Maturity, Due after five years through ten years, Amortized Cost | 516,866 | |
Held to Maturity, Due after ten years, Amortized Cost | 13,198 | |
Held to Maturity, Amortized Cost | 530,396 | 530,861 |
Held to Maturity, Due in one year or less, Estimated Fair Value | 0 | |
Held to Maturity, Due after one year through five years, Estimated Fair Value | 335 | |
Held to Maturity, Due after five years through ten years, Estimated Fair Value | 553,409 | |
Held to Maturity, Due after ten years, Estimated Fair Value | 13,886 | |
Held to Maturity, Estimated Fair Value | 567,630 | 521,518 |
Available-for-sale Securities, Due in one year or less, Amortized Cost | 236 | |
Available for Sale, Due after one year through five years, Amortized Cost | 68,185 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 5,859 | |
Available for Sale, Due after ten years, Amortized Cost | 1,935,243 | |
Available for Sale, Amortized Cost | 2,009,523 | 2,176,275 |
Available for Sale, Due in one year or less, Estimated Fair Value | 249 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 70,834 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 6,379 | |
Available for Sale, Due after ten years, Estimated Fair Value | 2,012,484 | |
Securities available for sale, estimated fair value | 2,089,946 | 2,207,594 |
US States and Political Subdivisions Debt Securities [Member] | ||
Schedule of Investments [Line Items] | ||
Held to Maturity, Due in one year or less, Amortized Cost | 25,324 | |
Held to Maturity, Due after one year through five years, Amortized Cost | 170,386 | |
Held to Maturity, Due after five years through ten years, Amortized Cost | 496,235 | |
Held to Maturity, Due after ten years, Amortized Cost | 760,508 | |
Held to Maturity, Amortized Cost | 1,452,453 | 1,497,644 |
Held to Maturity, Due in one year or less, Estimated Fair Value | 25,579 | |
Held to Maturity, Due after one year through five years, Estimated Fair Value | 174,896 | |
Held to Maturity, Due after five years through ten years, Estimated Fair Value | 507,221 | |
Held to Maturity, Due after ten years, Estimated Fair Value | 781,053 | |
Held to Maturity, Estimated Fair Value | 1,488,749 | 1,525,657 |
Available-for-sale Securities, Due in one year or less, Amortized Cost | 250,489 | |
Available for Sale, Due after one year through five years, Amortized Cost | 220,504 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 648,416 | |
Available for Sale, Due after ten years, Amortized Cost | 5,665,670 | |
Available for Sale, Amortized Cost | 6,785,079 | 6,717,344 |
Available for Sale, Due in one year or less, Estimated Fair Value | 252,108 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 231,285 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 686,745 | |
Available for Sale, Due after ten years, Estimated Fair Value | 5,997,728 | |
Securities available for sale, estimated fair value | 7,167,866 | 7,070,997 |
Other Investments [Member] | ||
Schedule of Investments [Line Items] | ||
Held to Maturity, Due in one year or less, Amortized Cost | 0 | |
Held to Maturity, Due after one year through five years, Amortized Cost | 1,500 | |
Held to Maturity, Due after five years through ten years, Amortized Cost | 0 | |
Held to Maturity, Due after ten years, Amortized Cost | 0 | |
Held to Maturity, Amortized Cost | 1,500 | 1,500 |
Held to Maturity, Due in one year or less, Estimated Fair Value | 0 | |
Held to Maturity, Due after one year through five years, Estimated Fair Value | 1,500 | |
Held to Maturity, Due after five years through ten years, Estimated Fair Value | 0 | |
Held to Maturity, Due after ten years, Estimated Fair Value | 0 | |
Held to Maturity, Estimated Fair Value | 1,500 | 1,500 |
Available-for-sale Securities, Due in one year or less, Amortized Cost | 0 | |
Available for Sale, Due after one year through five years, Amortized Cost | 0 | |
Available for Sale, Due after five years through ten years, Amortized Cost | 0 | |
Available for Sale, Due after ten years, Amortized Cost | 0 | |
Available for Sale, Amortized Cost | 42,901 | 42,867 |
Available for Sale, Due in one year or less, Estimated Fair Value | 0 | |
Available for Sale, Due after one year through five years, Estimated Fair Value | 0 | |
Available for Sale, Due after five years through ten years, Estimated Fair Value | 0 | |
Available for Sale, Due after ten years, Estimated Fair Value | 0 | |
Securities available for sale, estimated fair value | $ 42,901 | $ 42,867 |
Securities - Sales of Securitie
Securities - Sales of Securities Available for Sale (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Investments, Debt and Equity Securities [Abstract] | ||
Proceeds from sales | $ 1,111,102 | $ 944,903 |
Gross realized gains | 108,989 | 0 |
Gross realized losses | 0 | 0 |
Tax (expense)benefit of securities gains/losses | $ 22,888 | $ 0 |
Securities Securities - Premium
Securities Securities - Premium Amortization and Discount Accretion Included in Income on Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Investments, Debt and Equity Securities [Abstract] | ||
Premium amortization | $ (32,345) | $ (29,879) |
Discount accretion | 585 | 1,183 |
Net (premium amortization) discount accretion | $ (31,760) | $ (28,696) |
Securities - Trading Account Se
Securities - Trading Account Securities, at Estimated Fair Value (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Debt and Equity Securities, FV-NI [Line Items] | ||
Trading account securities | $ 25,921 | $ 24,298 |
U.S. Treasury [Member] | ||
Debt and Equity Securities, FV-NI [Line Items] | ||
Trading account securities | 24,491 | 24,298 |
States and political subdivisions [Member] | ||
Debt and Equity Securities, FV-NI [Line Items] | ||
Trading account securities | $ 1,430 | $ 0 |
Securities - Net Gains and Loss
Securities - Net Gains and Losses on Trading Account Securities (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Investments, Debt and Equity Securities [Abstract] | ||
Net gain on sales transactions | $ 470 | $ 506 |
Net mark-to-market gains (losses) | 115 | 4 |
Net gain (loss) on trading account securities | $ 585 | $ 510 |
Loans - Additional Information
Loans - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | ||
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019 | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
Concentration of loans in a single industry in excess of ten percent | 0.00% | ||
Maximum percentage loan related to single industry | 10.00% | ||
Loans and Leases Receivable, Related Parties | $ 326,100 | $ 298,500 | |
Financing Receivable, Threshold Period Past Due | 90 days | ||
Loans and Leases Receivable, Net of Deferred Income | $ 15,338,260 | $ 14,750,332 | |
Texas Leading Index economic condition indicator | 111.8 | 127.9 | |
Non Accrual Loans [Member] | |||
Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
Additional interest that would have been recognized on non-accrual loans, net of tax | $ 1,000 | $ 1,000 | |
Commercial and Industrial Total Energy Loans [Member] | |||
Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
Percentage of total energy loans to total loans | 10.20% | 11.20% | |
Loans and Leases Receivable, Net of Deferred Income | $ 1,568,854 | $ 1,652,882 | |
Commitments to Extend Credit [Member] | Commercial and industrial, Energy [Member] | |||
Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
Unfunded balances | 1,200,000 | ||
Standby Letters of Credit [Member] | Commercial and industrial, Energy [Member] | |||
Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
Unfunded balances | 84,400 | ||
Loans Receivable [Member] | |||
Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
Interest Receivable | 42,300 | 45,500 | |
Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | |||
Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
Loans and Leases Receivable, Net of Deferred Income | 102,078 | $ 14,760 | |
2020 [Member] | Commercial and Industrial Total Energy Loans [Member] | |||
Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
Loans and Leases Receivable, Net of Deferred Income | 648,379 | ||
2020 [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | |||
Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
Loans and Leases Receivable, Net of Deferred Income | 62,509 | ||
Loans and Leases Receivable, Net of Deferred Income First Originated in 2017 | 50,900 | ||
Loans and Leases Receivable, Net of Deferred Income First Originated in 2016 | $ 11,500 |
Loans - Loans (Detail)
Loans - Loans (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 15,338,260 | $ 14,750,332 |
Total loans percentage | 100.00% | 100.00% |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 5,536,760 | $ 5,187,466 |
Total commercial and industrial percentage of total loans | 36.10% | 35.20% |
Energy Production [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 1,268,832 | $ 1,348,900 |
Percentage of energy production loans to total loans | 8.30% | 9.20% |
Energy Service [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 185,210 | $ 192,996 |
Percentage of energy service loans to total loans | 1.20% | 1.30% |
Energy Other [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 114,812 | $ 110,986 |
Percentage of other energy loans to total loans | 0.70% | 0.80% |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 1,568,854 | $ 1,652,882 |
Percentage of total energy loans to total loans | 10.20% | 11.20% |
Commercial mortgage [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 4,920,882 | $ 4,594,113 |
Commercial mortgages percentage of total loans | 32.10% | 31.10% |
Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 1,265,441 | $ 1,312,659 |
Construction percentage of total loans | 8.30% | 8.90% |
Commercial land loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 286,876 | $ 289,467 |
Land percentage of total loans | 1.90% | 2.00% |
Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 6,473,199 | $ 6,196,239 |
Total commercial real estate percentage of total loans | 42.30% | 42.00% |
Home Equity Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 389,844 | $ 375,596 |
Home equity loans percentage of total loans | 2.50% | 2.60% |
Home Equity Line of Credit [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 350,330 | $ 354,671 |
Home equity lines of credit percentage of total loans | 2.30% | 2.40% |
Other consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 480,933 | $ 464,146 |
Other percentage of total loans | 3.10% | 3.10% |
Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 1,221,107 | $ 1,194,413 |
Total consumer real estate percentage of total loans | 7.90% | 8.10% |
Real Estate Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 7,694,306 | $ 7,390,652 |
Total real estate percentage of total loans | 50.20% | 50.10% |
Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans, net of unearned discounts | $ 538,340 | $ 519,332 |
Total consumer and other percentage of total loans | 3.50% | 3.50% |
Loans - Non-Accrual Loans, Segr
Loans - Non-Accrual Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | $ 66,727 | $ 102,303 |
Non-accrual with no credit loss allowance | 48,487 | 24,692 |
Commercial Portfolio Segment [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 23,913 | 26,038 |
Non-accrual with no credit loss allowance | 11,085 | 13,266 |
Commercial and Industrial Total Energy Loans [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 28,702 | 65,761 |
Non-accrual with no credit loss allowance | 28,702 | 3,281 |
Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 8,224 | 8,912 |
Non-accrual with no credit loss allowance | 5,922 | 6,558 |
Construction Loans [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 3,774 | 665 |
Non-accrual with no credit loss allowance | 683 | 665 |
Total consumer real estate loans [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 2,094 | 922 |
Non-accrual with no credit loss allowance | 2,094 | 922 |
Consumer Loan [Member] | ||
Non Accrual Loans Segregated By Class Of Loans [Line Items] | ||
Non-accrual loans | 20 | 5 |
Non-accrual with no credit loss allowance | $ 1 | $ 0 |
Loans Loans - Non-Accrual Loans
Loans Loans - Non-Accrual Loans, Segregated by Class of Loans and Year of Origination (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | $ 66,727 | $ 102,303 |
Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 23,913 | 26,038 |
Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 28,702 | 65,761 |
Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 8,224 | 8,912 |
Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 3,774 | 665 |
Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 2,094 | 922 |
Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 20 | $ 5 |
Revolving Credit Facility [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 9,067 | |
Revolving Credit Facility [Member] | Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 4,601 | |
Revolving Credit Facility [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 3,035 | |
Revolving Credit Facility [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 568 | |
Revolving Credit Facility [Member] | Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
Revolving Credit Facility [Member] | Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 844 | |
Revolving Credit Facility [Member] | Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 19 | |
Revolving Loans Converted to Term [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 29,863 | |
Revolving Loans Converted to Term [Member] | Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 4,135 | |
Revolving Loans Converted to Term [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 25,667 | |
Revolving Loans Converted to Term [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
Revolving Loans Converted to Term [Member] | Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
Revolving Loans Converted to Term [Member] | Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 61 | |
Revolving Loans Converted to Term [Member] | Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2020 [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2020 [Member] | Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2020 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2020 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2020 [Member] | Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2020 [Member] | Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2020 [Member] | Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2019 [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 9,169 | |
2019 [Member] | Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 3,187 | |
2019 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2019 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 2,207 | |
2019 [Member] | Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 3,774 | |
2019 [Member] | Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2019 [Member] | Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 1 | |
2018 [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 9,046 | |
2018 [Member] | Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 9,012 | |
2018 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2018 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 34 | |
2018 [Member] | Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2018 [Member] | Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2018 [Member] | Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2017 [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 4,129 | |
2017 [Member] | Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 2,448 | |
2017 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2017 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 1,470 | |
2017 [Member] | Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2017 [Member] | Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 211 | |
2017 [Member] | Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2016 [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 1,040 | |
2016 [Member] | Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 384 | |
2016 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2016 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 306 | |
2016 [Member] | Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
2016 [Member] | Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 350 | |
2016 [Member] | Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
Prior Years [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 4,413 | |
Prior Years [Member] | Commercial Portfolio Segment [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 146 | |
Prior Years [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
Prior Years [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 3,639 | |
Prior Years [Member] | Construction Loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 0 | |
Prior Years [Member] | Total consumer real estate loans [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | 628 | |
Prior Years [Member] | Consumer Loan [Member] | ||
Loans and Leases Receivable Disclosure [Line Items] | ||
Non-accrual loans | $ 0 |
Loans - Age Analysis of Past Du
Loans - Age Analysis of Past Due Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | $ 179,893 | |
Current Loans | 15,158,367 | |
Total loans | 15,338,260 | $ 14,750,332 |
Accruing Loans 90 or More Days Past Due | 11,872 | |
Commercial Portfolio Segment [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 62,735 | |
Current Loans | 5,474,025 | |
Total loans | 5,536,760 | 5,187,466 |
Accruing Loans 90 or More Days Past Due | 8,343 | |
Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 49,580 | |
Current Loans | 1,519,274 | |
Total loans | 1,568,854 | 1,652,882 |
Accruing Loans 90 or More Days Past Due | 0 | |
Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 42,831 | |
Current Loans | 5,164,927 | |
Total loans | 5,207,758 | 4,883,580 |
Accruing Loans 90 or More Days Past Due | 817 | |
Construction Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 4,828 | |
Current Loans | 1,260,613 | |
Total loans | 1,265,441 | 1,312,659 |
Accruing Loans 90 or More Days Past Due | 127 | |
Total consumer real estate loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 12,772 | |
Current Loans | 1,208,335 | |
Total loans | 1,221,107 | 1,194,413 |
Accruing Loans 90 or More Days Past Due | 1,572 | |
Consumer Loan [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 7,147 | |
Current Loans | 531,193 | |
Total loans | 538,340 | $ 519,332 |
Accruing Loans 90 or More Days Past Due | 1,013 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 122,167 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 38,518 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 23,913 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 39,359 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Construction Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 4,701 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 9,542 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 6,134 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 57,726 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 24,217 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 25,667 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 3,472 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 127 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | 3,230 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Financing Receivable, Past Due [Line Items] | ||
Total Past Due Loans | $ 1,013 |
Loans - Troubled Debt Restructu
Loans - Troubled Debt Restructurings (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Financing Receivable, Troubled Debt Restructuring [Line Items] | ||
Balance at time of restructuring | $ 2,191 | $ 6,208 |
Balance at period end | 2,198 | 6,191 |
Commercial Portfolio Segment [Member] | ||
Financing Receivable, Troubled Debt Restructuring [Line Items] | ||
Balance at time of restructuring | 2,191 | 307 |
Balance at period end | 2,198 | 293 |
Commercial real estate, Buildings, land and other [Member] | ||
Financing Receivable, Troubled Debt Restructuring [Line Items] | ||
Balance at time of restructuring | 0 | 5,901 |
Balance at period end | $ 0 | $ 5,898 |
Loans Loans - Restructured Loan
Loans Loans - Restructured Loans Past Due in Excess of 90 Days on Financing Receivables (Details) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020USD ($)Item | Mar. 31, 2019USD ($)Item | |
Financing Receivable, Troubled Debt Restructuring [Line Items] | ||
Number Of Restructured Loans Past Due In Excess of 90 Days At Period-End | Item | 3 | 4 |
Dollar amount of previously restructured loans past due | $ 1,733 | $ 2,367 |
Restructured loans on non-accrual status at period end | 2,198 | 2,162 |
Charge-offs of restructured loans recognized in connection with restructuring | 0 | 0 |
Charge-offs of restructured loans recognized on previously restructured loans | $ 1,533 | $ 0 |
Loans Loans - Weighted Average
Loans Loans - Weighted Average Risk Grade for All Commercial Loans by Class and Year of Origination (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |
Mar. 31, 2020USD ($)Grade | Dec. 31, 2019USD ($)Grade | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 15,338,260 | $ 14,750,332 |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 5,536,760 | $ 5,187,466 |
Weighted Average Risk Grade For Loans | Grade | 6.44 | 6.44 |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 1,568,854 | $ 1,652,882 |
Weighted Average Risk Grade For Loans | Grade | 6.81 | 6.39 |
Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 5,207,758 | $ 4,883,580 |
Weighted Average Risk Grade For Loans | Grade | 7.16 | 7.01 |
Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 1,265,441 | $ 1,312,659 |
Weighted Average Risk Grade For Loans | Grade | 7.25 | 7.31 |
Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 6,473,199 | $ 6,196,239 |
Weighted Average Risk Grade For Loans | Grade | 7.18 | 7.07 |
Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 5,066,390 | $ 4,788,857 |
Weighted Average Risk Grade For Loans | Grade | 6.14 | 6.17 |
Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 1,397,498 | $ 1,488,301 |
Weighted Average Risk Grade For Loans | Grade | 6.33 | 5.90 |
Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 4,679,738 | $ 4,523,271 |
Weighted Average Risk Grade For Loans | Grade | 6.89 | 6.78 |
Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 1,214,908 | $ 1,274,098 |
Weighted Average Risk Grade For Loans | Grade | 7.15 | 7.25 |
Risk Grade One To Eight [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 5,797,369 | |
Weighted Average Risk Grade For Loans | Grade | 6.88 | |
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 268,567 | $ 247,212 |
Weighted Average Risk Grade For Loans | Grade | 9 | 9 |
Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 29,610 | $ 32,163 |
Weighted Average Risk Grade For Loans | Grade | 9 | 9 |
Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 328,179 | $ 163,714 |
Weighted Average Risk Grade For Loans | Grade | 9 | 9 |
Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 27,939 | $ 21,509 |
Weighted Average Risk Grade For Loans | Grade | 9 | 9 |
Risk Grade Nine [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 185,223 | |
Weighted Average Risk Grade For Loans | Grade | 9 | |
Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 138,363 | $ 71,472 |
Weighted Average Risk Grade For Loans | Grade | 10 | 10 |
Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 10,966 | $ 51,898 |
Weighted Average Risk Grade For Loans | Grade | 10 | 10 |
Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 120,642 | $ 103,626 |
Weighted Average Risk Grade For Loans | Grade | 10 | 10 |
Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 16,652 | $ 15,243 |
Weighted Average Risk Grade For Loans | Grade | 10 | 10 |
Risk Grade Ten [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 118,869 | |
Weighted Average Risk Grade For Loans | Grade | 10 | |
Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 39,527 | $ 53,887 |
Weighted Average Risk Grade For Loans | Grade | 11 | 11 |
Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 102,078 | $ 14,760 |
Weighted Average Risk Grade For Loans | Grade | 11 | 11 |
Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 70,975 | $ 84,057 |
Weighted Average Risk Grade For Loans | Grade | 11 | 11 |
Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 2,168 | $ 1,144 |
Weighted Average Risk Grade For Loans | Grade | 11 | 11 |
Risk Grade Eleven [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 85,201 | |
Weighted Average Risk Grade For Loans | Grade | 11 | |
Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 14,709 | $ 18,189 |
Weighted Average Risk Grade For Loans | Grade | 12 | 12 |
Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 28,702 | $ 45,514 |
Weighted Average Risk Grade For Loans | Grade | 12 | 12 |
Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 7,911 | $ 8,529 |
Weighted Average Risk Grade For Loans | Grade | 12 | 12 |
Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 683 | $ 665 |
Weighted Average Risk Grade For Loans | Grade | 12 | 12 |
Risk Grade Twelve [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 9,194 | |
Weighted Average Risk Grade For Loans | Grade | 12 | |
Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 9,204 | $ 7,849 |
Weighted Average Risk Grade For Loans | Grade | 13 | 13 |
Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 0 | $ 20,246 |
Weighted Average Risk Grade For Loans | Grade | 13 | 13 |
Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 313 | $ 383 |
Weighted Average Risk Grade For Loans | Grade | 13 | 13 |
Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 3,091 | $ 0 |
Weighted Average Risk Grade For Loans | Grade | 13 | 13 |
Risk Grade Thirteen [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 383 | |
Weighted Average Risk Grade For Loans | Grade | 13 | |
Revolving Credit Facility [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 2,586,346 | |
Weighted Average Risk Grade For Loans | Grade | 6.46 | |
Revolving Credit Facility [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 740,395 | |
Weighted Average Risk Grade For Loans | Grade | 6.48 | |
Revolving Credit Facility [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 84,974 | |
Weighted Average Risk Grade For Loans | Grade | 7.03 | |
Revolving Credit Facility [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 145,049 | |
Weighted Average Risk Grade For Loans | Grade | 6.84 | |
Revolving Credit Facility [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 230,023 | |
Weighted Average Risk Grade For Loans | Grade | 6.91 | |
Revolving Credit Facility [Member] | Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 2,362,308 | |
Revolving Credit Facility [Member] | Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 665,347 | |
Revolving Credit Facility [Member] | Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 83,274 | |
Revolving Credit Facility [Member] | Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 144,922 | |
Revolving Credit Facility [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 127,148 | |
Revolving Credit Facility [Member] | Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 25,658 | |
Revolving Credit Facility [Member] | Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 400 | |
Revolving Credit Facility [Member] | Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 127 | |
Revolving Credit Facility [Member] | Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 74,625 | |
Revolving Credit Facility [Member] | Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 10,250 | |
Revolving Credit Facility [Member] | Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 632 | |
Revolving Credit Facility [Member] | Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Credit Facility [Member] | Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 17,664 | |
Revolving Credit Facility [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 36,105 | |
Revolving Credit Facility [Member] | Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 100 | |
Revolving Credit Facility [Member] | Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Credit Facility [Member] | Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 2,520 | |
Revolving Credit Facility [Member] | Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 3,035 | |
Revolving Credit Facility [Member] | Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 505 | |
Revolving Credit Facility [Member] | Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Credit Facility [Member] | Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 2,081 | |
Revolving Credit Facility [Member] | Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Credit Facility [Member] | Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 63 | |
Revolving Credit Facility [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 67,118 | |
Weighted Average Risk Grade For Loans | Grade | 7.89 | |
Revolving Loans Converted to Term [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 36,475 | |
Weighted Average Risk Grade For Loans | Grade | 10.69 | |
Revolving Loans Converted to Term [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 61,319 | |
Weighted Average Risk Grade For Loans | Grade | 6.84 | |
Revolving Loans Converted to Term [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 0 | |
Weighted Average Risk Grade For Loans | Grade | 0 | |
Revolving Loans Converted to Term [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 61,319 | |
Weighted Average Risk Grade For Loans | Grade | 6.84 | |
Revolving Loans Converted to Term [Member] | Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 47,080 | |
Revolving Loans Converted to Term [Member] | Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 9,642 | |
Revolving Loans Converted to Term [Member] | Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 59,064 | |
Revolving Loans Converted to Term [Member] | Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 6,267 | |
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 46 | |
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 264 | |
Revolving Loans Converted to Term [Member] | Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 679 | |
Revolving Loans Converted to Term [Member] | Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 8,957 | |
Revolving Loans Converted to Term [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,120 | |
Revolving Loans Converted to Term [Member] | Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,991 | |
Revolving Loans Converted to Term [Member] | Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 2,512 | |
Revolving Loans Converted to Term [Member] | Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 25,667 | |
Revolving Loans Converted to Term [Member] | Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,623 | |
Revolving Loans Converted to Term [Member] | Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Revolving Loans Converted to Term [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 802,487 | |
Weighted Average Risk Grade For Loans | Grade | 5.75 | |
2020 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 648,379 | |
Weighted Average Risk Grade For Loans | Grade | 6.89 | |
2020 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 505,149 | |
Weighted Average Risk Grade For Loans | Grade | 6.97 | |
2020 [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 130,065 | |
Weighted Average Risk Grade For Loans | Grade | 7.59 | |
2020 [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 635,214 | |
Weighted Average Risk Grade For Loans | Grade | 7.10 | |
2020 [Member] | Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 765,088 | |
2020 [Member] | Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 585,655 | |
2020 [Member] | Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 503,028 | |
2020 [Member] | Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 115,476 | |
2020 [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 15,539 | |
2020 [Member] | Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 215 | |
2020 [Member] | Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,872 | |
2020 [Member] | Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 406 | |
2020 [Member] | Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 21,815 | |
2020 [Member] | Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 12,991 | |
2020 [Member] | Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 45 | |
2020 [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 62,509 | |
2020 [Member] | Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 249 | |
2020 [Member] | Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,192 | |
2020 [Member] | Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2020 [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2019 [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 867,946 | |
Weighted Average Risk Grade For Loans | Grade | 6.69 | |
2019 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 98,103 | |
Weighted Average Risk Grade For Loans | Grade | 7.21 | |
2019 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 1,198,313 | |
Weighted Average Risk Grade For Loans | Grade | 7.19 | |
2019 [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 394,914 | |
Weighted Average Risk Grade For Loans | Grade | 7.24 | |
2019 [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 1,593,227 | |
Weighted Average Risk Grade For Loans | Grade | 7.21 | |
2019 [Member] | Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 813,141 | |
2019 [Member] | Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 95,004 | |
2019 [Member] | Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,080,494 | |
2019 [Member] | Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 374,393 | |
2019 [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 34,847 | |
2019 [Member] | Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 2,105 | |
2019 [Member] | Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 89,718 | |
2019 [Member] | Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 14,003 | |
2019 [Member] | Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 10,918 | |
2019 [Member] | Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 669 | |
2019 [Member] | Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 14,619 | |
2019 [Member] | Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 2,744 | |
2019 [Member] | Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 5,853 | |
2019 [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 325 | |
2019 [Member] | Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 11,275 | |
2019 [Member] | Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2019 [Member] | Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 536 | |
2019 [Member] | Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2019 [Member] | Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 2,207 | |
2019 [Member] | Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 683 | |
2019 [Member] | Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 2,651 | |
2019 [Member] | Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2019 [Member] | Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2019 [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 3,091 | |
2018 [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 509,381 | |
Weighted Average Risk Grade For Loans | Grade | 7.12 | |
2018 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 24,041 | |
Weighted Average Risk Grade For Loans | Grade | 7.25 | |
2018 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 824,113 | |
Weighted Average Risk Grade For Loans | Grade | 7.08 | |
2018 [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 460,068 | |
Weighted Average Risk Grade For Loans | Grade | 7.24 | |
2018 [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 1,284,181 | |
Weighted Average Risk Grade For Loans | Grade | 7.14 | |
2018 [Member] | Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 433,145 | |
2018 [Member] | Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 22,101 | |
2018 [Member] | Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 780,270 | |
2018 [Member] | Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 456,568 | |
2018 [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 51,906 | |
2018 [Member] | Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 999 | |
2018 [Member] | Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 41,520 | |
2018 [Member] | Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 3,500 | |
2018 [Member] | Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 13,042 | |
2018 [Member] | Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2018 [Member] | Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 500 | |
2018 [Member] | Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2018 [Member] | Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 2,276 | |
2018 [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 941 | |
2018 [Member] | Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,789 | |
2018 [Member] | Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2018 [Member] | Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 7,179 | |
2018 [Member] | Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2018 [Member] | Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 34 | |
2018 [Member] | Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2018 [Member] | Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,833 | |
2018 [Member] | Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2018 [Member] | Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2018 [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2017 [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 360,115 | |
Weighted Average Risk Grade For Loans | Grade | 6.18 | |
2017 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 11,935 | |
Weighted Average Risk Grade For Loans | Grade | 7.34 | |
2017 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 878,113 | |
Weighted Average Risk Grade For Loans | Grade | 7.32 | |
2017 [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 108,996 | |
Weighted Average Risk Grade For Loans | Grade | 7.54 | |
2017 [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 987,109 | |
Weighted Average Risk Grade For Loans | Grade | 7.35 | |
2017 [Member] | Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 333,114 | |
2017 [Member] | Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 11,048 | |
2017 [Member] | Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 745,352 | |
2017 [Member] | Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 105,160 | |
2017 [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 14,167 | |
2017 [Member] | Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 587 | |
2017 [Member] | Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 79,696 | |
2017 [Member] | Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 2,919 | |
2017 [Member] | Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 7,237 | |
2017 [Member] | Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2017 [Member] | Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 20,394 | |
2017 [Member] | Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 917 | |
2017 [Member] | Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 3,149 | |
2017 [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 300 | |
2017 [Member] | Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 31,201 | |
2017 [Member] | Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2017 [Member] | Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,432 | |
2017 [Member] | Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2017 [Member] | Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,470 | |
2017 [Member] | Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2017 [Member] | Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,016 | |
2017 [Member] | Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2017 [Member] | Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2017 [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 184,420 | |
Weighted Average Risk Grade For Loans | Grade | 6.24 | |
2016 [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 3,195 | |
Weighted Average Risk Grade For Loans | Grade | 6.60 | |
2016 [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 608,759 | |
Weighted Average Risk Grade For Loans | Grade | 7.37 | |
2016 [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 8,180 | |
Weighted Average Risk Grade For Loans | Grade | 8.71 | |
2016 [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 616,939 | |
Weighted Average Risk Grade For Loans | Grade | 7.38 | |
2016 [Member] | Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 168,744 | |
2016 [Member] | Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 3,187 | |
2016 [Member] | Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 518,981 | |
2016 [Member] | Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,196 | |
2016 [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 7,700 | |
2016 [Member] | Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 55,037 | |
2016 [Member] | Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 6,984 | |
2016 [Member] | Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 6,670 | |
2016 [Member] | Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 26,200 | |
2016 [Member] | Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 922 | |
2016 [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 8 | |
2016 [Member] | Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 8,235 | |
2016 [Member] | Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 384 | |
2016 [Member] | Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 306 | |
2016 [Member] | Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
2016 [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Prior Years [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 158,947 | |
Weighted Average Risk Grade For Loans | Grade | 6.10 | |
Prior Years [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 6,331 | |
Weighted Average Risk Grade For Loans | Grade | 7.48 | |
Prior Years [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 1,047,018 | |
Weighted Average Risk Grade For Loans | Grade | 7.04 | |
Prior Years [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 18,169 | |
Weighted Average Risk Grade For Loans | Grade | 6.31 | |
Prior Years [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 1,065,187 | |
Weighted Average Risk Grade For Loans | Grade | 7.02 | |
Prior Years [Member] | Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 143,770 | |
Prior Years [Member] | Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 5,514 | |
Prior Years [Member] | Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 909,275 | |
Prior Years [Member] | Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 17,193 | |
Prior Years [Member] | Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 10,993 | |
Prior Years [Member] | Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Prior Years [Member] | Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 59,672 | |
Prior Years [Member] | Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Prior Years [Member] | Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 3,377 | |
Prior Years [Member] | Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 47 | |
Prior Years [Member] | Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 58,297 | |
Prior Years [Member] | Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Prior Years [Member] | Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 661 | |
Prior Years [Member] | Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 770 | |
Prior Years [Member] | Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 16,135 | |
Prior Years [Member] | Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 976 | |
Prior Years [Member] | Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 146 | |
Prior Years [Member] | Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Prior Years [Member] | Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 3,389 | |
Prior Years [Member] | Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Prior Years [Member] | Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Prior Years [Member] | Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 0 | |
Prior Years [Member] | Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 250 | |
Prior Years [Member] | Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 0 |
Loans - Weighted Average Risk G
Loans - Weighted Average Risk Grades for All Commercial Loans by Class (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended |
Mar. 31, 2020USD ($)Grade | Dec. 31, 2019USD ($)Grade | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 15,338,260 | $ 14,750,332 |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.44 | 6.44 |
Loans and Leases Receivable, Net of Deferred Income | $ 5,536,760 | $ 5,187,466 |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.81 | 6.39 |
Loans and Leases Receivable, Net of Deferred Income | $ 1,568,854 | $ 1,652,882 |
Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.16 | 7.01 |
Loans and Leases Receivable, Net of Deferred Income | $ 5,207,758 | $ 4,883,580 |
Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.25 | 7.31 |
Loans and Leases Receivable, Net of Deferred Income | $ 1,265,441 | $ 1,312,659 |
Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.18 | 7.07 |
Loans and Leases Receivable, Net of Deferred Income | $ 6,473,199 | $ 6,196,239 |
Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.14 | 6.17 |
Loans and Leases Receivable, Net of Deferred Income | $ 5,066,390 | $ 4,788,857 |
Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.33 | 5.90 |
Loans and Leases Receivable, Net of Deferred Income | $ 1,397,498 | $ 1,488,301 |
Risk Grade One To Eight [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.89 | 6.78 |
Loans and Leases Receivable, Net of Deferred Income | $ 4,679,738 | $ 4,523,271 |
Risk Grade One To Eight [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 7.15 | 7.25 |
Loans and Leases Receivable, Net of Deferred Income | $ 1,214,908 | $ 1,274,098 |
Risk Grade One To Eight [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 6.88 | |
Loans and Leases Receivable, Net of Deferred Income | $ 5,797,369 | |
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | 9 |
Loans and Leases Receivable, Net of Deferred Income | $ 268,567 | $ 247,212 |
Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | 9 |
Loans and Leases Receivable, Net of Deferred Income | $ 29,610 | $ 32,163 |
Risk Grade Nine [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | 9 |
Loans and Leases Receivable, Net of Deferred Income | $ 328,179 | $ 163,714 |
Risk Grade Nine [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | 9 |
Loans and Leases Receivable, Net of Deferred Income | $ 27,939 | $ 21,509 |
Risk Grade Nine [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 9 | |
Loans and Leases Receivable, Net of Deferred Income | $ 185,223 | |
Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | 10 |
Loans and Leases Receivable, Net of Deferred Income | $ 138,363 | $ 71,472 |
Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | 10 |
Loans and Leases Receivable, Net of Deferred Income | $ 10,966 | $ 51,898 |
Risk Grade Ten [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | 10 |
Loans and Leases Receivable, Net of Deferred Income | $ 120,642 | $ 103,626 |
Risk Grade Ten [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | 10 |
Loans and Leases Receivable, Net of Deferred Income | $ 16,652 | $ 15,243 |
Risk Grade Ten [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 10 | |
Loans and Leases Receivable, Net of Deferred Income | $ 118,869 | |
Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | 11 |
Loans and Leases Receivable, Net of Deferred Income | $ 39,527 | $ 53,887 |
Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | 11 |
Loans and Leases Receivable, Net of Deferred Income | $ 102,078 | $ 14,760 |
Risk Grade Eleven [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | 11 |
Loans and Leases Receivable, Net of Deferred Income | $ 70,975 | $ 84,057 |
Risk Grade Eleven [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | 11 |
Loans and Leases Receivable, Net of Deferred Income | $ 2,168 | $ 1,144 |
Risk Grade Eleven [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 11 | |
Loans and Leases Receivable, Net of Deferred Income | $ 85,201 | |
Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | 12 |
Loans and Leases Receivable, Net of Deferred Income | $ 14,709 | $ 18,189 |
Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | 12 |
Loans and Leases Receivable, Net of Deferred Income | $ 28,702 | $ 45,514 |
Risk Grade Twelve [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | 12 |
Loans and Leases Receivable, Net of Deferred Income | $ 7,911 | $ 8,529 |
Risk Grade Twelve [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | 12 |
Loans and Leases Receivable, Net of Deferred Income | $ 683 | $ 665 |
Risk Grade Twelve [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 12 | |
Loans and Leases Receivable, Net of Deferred Income | $ 9,194 | |
Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | 13 |
Loans and Leases Receivable, Net of Deferred Income | $ 9,204 | $ 7,849 |
Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | 13 |
Loans and Leases Receivable, Net of Deferred Income | $ 0 | $ 20,246 |
Risk Grade Thirteen [Member] | Commercial Real Estate Buildings Land And Other Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | 13 |
Loans and Leases Receivable, Net of Deferred Income | $ 313 | $ 383 |
Risk Grade Thirteen [Member] | Construction Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | 13 |
Loans and Leases Receivable, Net of Deferred Income | $ 3,091 | $ 0 |
Risk Grade Thirteen [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Weighted Average Risk Grade | Grade | 13 | |
Loans and Leases Receivable, Net of Deferred Income | $ 383 |
Loans Loans - Age Analysis of P
Loans Loans - Age Analysis of Past Due Consumer Loans,Segregated by Class and Year of Origination (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | $ 179,893 | |
Current Loans | 15,158,367 | |
Loans and Leases Receivable, Net of Deferred Income | 15,338,260 | $ 14,750,332 |
Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 12,772 | |
Current Loans | 1,208,335 | |
Loans and Leases Receivable, Net of Deferred Income | 1,221,107 | 1,194,413 |
Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 7,147 | |
Current Loans | 531,193 | |
Loans and Leases Receivable, Net of Deferred Income | 538,340 | $ 519,332 |
Financing Receivables, 30 to 89 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 122,167 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 9,542 | |
Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 6,134 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 57,726 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 3,230 | |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,013 | |
Revolving Credit Facility [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 2,430 | |
Current Loans | 367,149 | |
Loans and Leases Receivable, Net of Deferred Income | 369,579 | |
Revolving Credit Facility [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 3,491 | |
Current Loans | 420,517 | |
Loans and Leases Receivable, Net of Deferred Income | 424,008 | |
Revolving Credit Facility [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,206 | |
Revolving Credit Facility [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 3,380 | |
Revolving Credit Facility [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,224 | |
Revolving Credit Facility [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 111 | |
Revolving Loans Converted to Term [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,114 | |
Current Loans | 19,262 | |
Loans and Leases Receivable, Net of Deferred Income | 20,376 | |
Revolving Loans Converted to Term [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
Current Loans | 22,791 | |
Loans and Leases Receivable, Net of Deferred Income | 22,791 | |
Revolving Loans Converted to Term [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,114 | |
Revolving Loans Converted to Term [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
Revolving Loans Converted to Term [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
Revolving Loans Converted to Term [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
2020 [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
Current Loans | 65,082 | |
Loans and Leases Receivable, Net of Deferred Income | 65,082 | |
2020 [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,414 | |
Current Loans | 19,780 | |
Loans and Leases Receivable, Net of Deferred Income | 21,194 | |
2020 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
2020 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,414 | |
2020 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
2020 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
2019 [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 623 | |
Current Loans | 217,726 | |
Loans and Leases Receivable, Net of Deferred Income | 218,349 | |
2019 [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,703 | |
Current Loans | 44,825 | |
Loans and Leases Receivable, Net of Deferred Income | 46,528 | |
2019 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 623 | |
2019 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 801 | |
2019 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
2019 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 902 | |
2018 [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,283 | |
Current Loans | 142,566 | |
Loans and Leases Receivable, Net of Deferred Income | 143,849 | |
2018 [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 263 | |
Current Loans | 14,699 | |
Loans and Leases Receivable, Net of Deferred Income | 14,962 | |
2018 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 771 | |
2018 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 263 | |
2018 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 512 | |
2018 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
2017 [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,598 | |
Current Loans | 122,282 | |
Loans and Leases Receivable, Net of Deferred Income | 123,880 | |
2017 [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 151 | |
Current Loans | 4,329 | |
Loans and Leases Receivable, Net of Deferred Income | 4,480 | |
2017 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,490 | |
2017 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 151 | |
2017 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 108 | |
2017 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
2016 [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,149 | |
Current Loans | 93,385 | |
Loans and Leases Receivable, Net of Deferred Income | 94,534 | |
2016 [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 102 | |
Current Loans | 2,762 | |
Loans and Leases Receivable, Net of Deferred Income | 2,864 | |
2016 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 763 | |
2016 [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 102 | |
2016 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 386 | |
2016 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 0 | |
Prior Years [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 4,575 | |
Current Loans | 180,883 | |
Loans and Leases Receivable, Net of Deferred Income | 185,458 | |
Prior Years [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 23 | |
Current Loans | 1,490 | |
Loans and Leases Receivable, Net of Deferred Income | 1,513 | |
Prior Years [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 3,575 | |
Prior Years [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 23 | |
Prior Years [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | 1,000 | |
Prior Years [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Total Past Due Loans | $ 0 |
Loans Loans - Revolving Loans C
Loans Loans - Revolving Loans Converted to Term (Details) - Revolving Loans Converted to Term [Member] $ in Thousands | Mar. 31, 2020USD ($) |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Financing Receivable, Revolving | $ 35,409 |
Commercial Portfolio Segment [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Financing Receivable, Revolving | 11,346 |
Commercial and Industrial Total Energy Loans [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Financing Receivable, Revolving | 15,353 |
Commercial Real Estate Buildings Land And Other Loans [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Financing Receivable, Revolving | 7,639 |
Construction Loans [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Financing Receivable, Revolving | 0 |
Total consumer real estate loans [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Financing Receivable, Revolving | 1,071 |
Consumer Loan [Member] | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | |
Financing Receivable, Revolving | $ 0 |
Loans Loans - Allowance for C_2
Loans Loans - Allowance for Credit Loss By Loan Class Calculated in Accordance With CECL Methodology (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | $ 263,881 | $ 132,167 |
Commercial Portfolio Segment [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 92,152 | 51,593 |
Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 103,201 | 37,382 |
Commercial Real Estate Portfolio Segment [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 52,319 | 31,037 |
Total consumer real estate loans [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 8,170 | 4,113 |
Consumer Loan [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 8,039 | 8,042 |
Modeled Expected Credit Losses [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 133,736 | |
Modeled Expected Credit Losses [Member] | Commercial Portfolio Segment [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 69,446 | |
Modeled Expected Credit Losses [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 15,425 | |
Modeled Expected Credit Losses [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 34,941 | |
Modeled Expected Credit Losses [Member] | Total consumer real estate loans [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 6,974 | |
Modeled Expected Credit Losses [Member] | Consumer Loan [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 6,950 | |
Q-factor adjustments [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 117,517 | |
Q-factor adjustments [Member] | Commercial Portfolio Segment [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 13,501 | |
Q-factor adjustments [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 87,776 | |
Q-factor adjustments [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 13,974 | |
Q-factor adjustments [Member] | Total consumer real estate loans [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 1,196 | |
Q-factor adjustments [Member] | Consumer Loan [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 1,070 | |
Specific Valuation Allowances [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 12,628 | 28,483 |
Specific Valuation Allowances [Member] | Commercial Portfolio Segment [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 9,205 | 7,849 |
Specific Valuation Allowances [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 0 | 20,246 |
Specific Valuation Allowances [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 3,404 | 383 |
Specific Valuation Allowances [Member] | Total consumer real estate loans [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | 0 | 0 |
Specific Valuation Allowances [Member] | Consumer Loan [Member] | ||
Financing Receivable, Allowance for Credit Loss [Line Items] | ||
Loans and Leases Receivable, Allowance | $ 19 | $ 5 |
Loans - Allowance for Credit Lo
Loans - Allowance for Credit Losses By Loan Class Accordance With Methodology Used Prior to CECL (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | $ 263,881 | $ 132,167 |
Historical Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 69,087 | |
Specific Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 12,628 | 28,483 |
General Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 19,732 | |
Macroeconomic Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 14,865 | |
Commercial Portfolio Segment [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 92,152 | 51,593 |
Commercial Portfolio Segment [Member] | Historical Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 29,015 | |
Commercial Portfolio Segment [Member] | Specific Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 9,205 | 7,849 |
Commercial Portfolio Segment [Member] | General Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 9,840 | |
Commercial Portfolio Segment [Member] | Macroeconomic Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 4,889 | |
Commercial and Industrial Total Energy Loans [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 103,201 | 37,382 |
Commercial and Industrial Total Energy Loans [Member] | Historical Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 7,873 | |
Commercial and Industrial Total Energy Loans [Member] | Specific Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 0 | 20,246 |
Commercial and Industrial Total Energy Loans [Member] | General Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 5,196 | |
Commercial and Industrial Total Energy Loans [Member] | Macroeconomic Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 4,067 | |
Commercial Real Estate Portfolio Segment [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 52,319 | 31,037 |
Commercial Real Estate Portfolio Segment [Member] | Historical Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 21,947 | |
Commercial Real Estate Portfolio Segment [Member] | Specific Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 3,404 | 383 |
Commercial Real Estate Portfolio Segment [Member] | General Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 4,201 | |
Commercial Real Estate Portfolio Segment [Member] | Macroeconomic Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 4,506 | |
Total consumer real estate loans [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 8,170 | 4,113 |
Total consumer real estate loans [Member] | Historical Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 2,690 | |
Total consumer real estate loans [Member] | Specific Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 0 | 0 |
Total consumer real estate loans [Member] | General Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 904 | |
Total consumer real estate loans [Member] | Macroeconomic Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 519 | |
Consumer Loan [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 8,039 | 8,042 |
Consumer Loan [Member] | Historical Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | 7,562 | |
Consumer Loan [Member] | Specific Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | $ 19 | 5 |
Consumer Loan [Member] | General Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | (409) | |
Consumer Loan [Member] | Macroeconomic Valuation Allowances [Member] | ||
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items] | ||
Loans and Leases Receivable, Allowance | $ 884 |
Loans - Activity in the Allowan
Loans - Activity in the Allowance for Credit Losses on Loans by Portfolio Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Allowance for Loan and Lease Losses [Roll Forward] | ||
Beginning balance | $ 132,167 | |
Impact of adopting ASC 326 | 39,377 | $ 0 |
Ending balance | 263,881 | |
Commercial Portfolio Segment [Member] | ||
Allowance for Loan and Lease Losses [Roll Forward] | ||
Beginning balance | 51,593 | 48,580 |
Impact of adopting ASC 326 | 21,263 | |
Credit loss expense | 21,950 | 11,929 |
Charge-offs | (4,369) | (2,688) |
Recoveries | 1,715 | 750 |
Net charge-offs | (2,654) | (1,938) |
Ending balance | 92,152 | 58,571 |
Commercial and Industrial Total Energy Loans [Member] | ||
Allowance for Loan and Lease Losses [Roll Forward] | ||
Beginning balance | 37,382 | 29,052 |
Impact of adopting ASC 326 | (10,453) | |
Credit loss expense | 110,006 | (3,756) |
Charge-offs | (33,800) | 0 |
Recoveries | 66 | 47 |
Net charge-offs | (33,734) | 47 |
Ending balance | 103,201 | 25,343 |
Commercial Real Estate Portfolio Segment [Member] | ||
Allowance for Loan and Lease Losses [Roll Forward] | ||
Beginning balance | 31,037 | 38,777 |
Impact of adopting ASC 326 | (13,519) | |
Credit loss expense | 34,761 | (2,352) |
Charge-offs | (73) | (60) |
Recoveries | 113 | 90 |
Net charge-offs | 40 | 30 |
Ending balance | 52,319 | 36,455 |
Total consumer real estate loans [Member] | ||
Allowance for Loan and Lease Losses [Roll Forward] | ||
Beginning balance | 4,113 | 6,103 |
Impact of adopting ASC 326 | 2,392 | |
Credit loss expense | 1,570 | 1,247 |
Charge-offs | (285) | (1,778) |
Recoveries | 380 | 89 |
Net charge-offs | 95 | (1,689) |
Ending balance | 8,170 | 5,661 |
Consumer Loan [Member] | ||
Allowance for Loan and Lease Losses [Roll Forward] | ||
Beginning balance | 8,042 | 9,620 |
Impact of adopting ASC 326 | (2,248) | |
Credit loss expense | 4,638 | 3,935 |
Charge-offs | (5,005) | (5,697) |
Recoveries | 2,612 | 2,462 |
Net charge-offs | (2,393) | (3,235) |
Ending balance | 8,039 | 10,320 |
Loans Receivable [Member] | ||
Allowance for Loan and Lease Losses [Roll Forward] | ||
Beginning balance | 132,167 | 132,132 |
Impact of adopting ASC 326 | (2,565) | |
Credit loss expense | 172,925 | 11,003 |
Charge-offs | (43,532) | (10,223) |
Recoveries | 4,886 | 3,438 |
Net charge-offs | (38,646) | (6,785) |
Ending balance | $ 263,881 | $ 136,350 |
Loans - Investment in Loans Rel
Loans - Investment in Loans Related to Allowance for Loan Losses by Portfolio Segment Disaggregated Based on Impairment Methodology (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 15,338,260 | $ 14,750,332 |
Loans and Leases Receivable, Specific Allocations | 263,881 | 132,167 |
Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 5,536,760 | 5,187,466 |
Loans and Leases Receivable, Specific Allocations | 92,152 | 51,593 |
Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,568,854 | 1,652,882 |
Loans and Leases Receivable, Specific Allocations | 103,201 | 37,382 |
Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 6,473,199 | 6,196,239 |
Loans and Leases Receivable, Specific Allocations | 52,319 | 31,037 |
Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,221,107 | 1,194,413 |
Loans and Leases Receivable, Specific Allocations | 8,170 | 4,113 |
Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 538,340 | 519,332 |
Loans and Leases Receivable, Specific Allocations | 8,039 | 8,042 |
Specific Valuation Allowances [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Specific Allocations | 12,628 | 28,483 |
Specific Valuation Allowances [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Specific Allocations | 9,205 | 7,849 |
Specific Valuation Allowances [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Specific Allocations | 0 | 20,246 |
Specific Valuation Allowances [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Specific Allocations | 3,404 | 383 |
Specific Valuation Allowances [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Specific Allocations | 0 | 0 |
Specific Valuation Allowances [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Specific Allocations | 19 | 5 |
Loans Individually Evaluated for Impairment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 63,367 | 99,453 |
Loans Individually Evaluated for Impairment [Member] | Commercial Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 21,925 | 24,360 |
Loans Individually Evaluated for Impairment [Member] | Commercial and Industrial Total Energy Loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 28,330 | 65,244 |
Loans Individually Evaluated for Impairment [Member] | Commercial Real Estate Portfolio Segment [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 11,669 | 9,274 |
Loans Individually Evaluated for Impairment [Member] | Total consumer real estate loans [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | 1,423 | 570 |
Loans Individually Evaluated for Impairment [Member] | Consumer Loan [Member] | ||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
Loans and Leases Receivable, Net of Deferred Income | $ 20 | $ 5 |
Goodwill and Other Intangible_3
Goodwill and Other Intangible Assets - Schedule of Goodwill (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Goodwill and Intangible Assets Disclosure [Abstract] | ||
Goodwill | $ 654,952 | $ 654,952 |
Goodwill and Other Intangible_4
Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Finite-Lived Intangible Assets [Line Items] | ||
Intangible Assets, Net (Excluding Goodwill) | $ 2,224 | $ 2,481 |
Core deposits [Member] | ||
Finite-Lived Intangible Assets [Line Items] | ||
Finite-Lived Intangible Assets, Net | 1,832 | 2,043 |
Customer relationships [Member] | ||
Finite-Lived Intangible Assets [Line Items] | ||
Finite-Lived Intangible Assets, Net | $ 392 | $ 438 |
Goodwill and Other Intangible_5
Goodwill and Other Intangible Assets - Estimated Aggregate Future Amortization Expense for Intangible Assets (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Goodwill and Intangible Assets Disclosure [Abstract] | ||
Remainder of 2020 | $ 661 | |
2021 | 697 | |
2022 | 481 | |
2023 | 282 | |
2024 | 87 | |
Thereafter | 16 | |
Future Amortization Expense, Total | $ 2,224 | $ 2,481 |
Deposits - Schedule of Deposits
Deposits - Schedule of Deposits (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Deposit [Line Items] | ||
Total non-interest-bearing demand deposits | $ 11,202,208 | $ 10,873,629 |
Total interest-bearing deposits | 16,938,659 | 16,765,935 |
Total deposits | $ 28,140,867 | $ 27,639,564 |
Total non-interest-bearing demand deposits, Percentage of Total | 39.80% | 39.30% |
Total interest-bearing deposits, Percentage of Total | 60.20% | 60.70% |
Total deposits, Percentage of Total | 100.00% | 100.00% |
Commercial and Individual [Member] | ||
Deposit [Line Items] | ||
Total non-interest-bearing demand deposits | $ 10,524,338 | $ 10,212,265 |
Total non-interest-bearing demand deposits, Percentage of Total | 37.40% | 36.90% |
Correspondent Banks [Member] | ||
Deposit [Line Items] | ||
Total non-interest-bearing demand deposits | $ 221,761 | $ 246,181 |
Total non-interest-bearing demand deposits, Percentage of Total | 0.80% | 0.90% |
Private Accounts [Member] | ||
Deposit [Line Items] | ||
Savings and interest checking | $ 7,240,821 | $ 7,147,327 |
Money market accounts | 7,995,061 | 7,888,433 |
Time accounts of $100,000 or More | 773,373 | 736,481 |
Time accounts under $100,000 | 347,349 | 347,418 |
Total private accounts | $ 16,356,604 | $ 16,119,659 |
Savings and interest checking, Percentage of Total | 25.70% | 25.90% |
Money market accounts, Percentage of Total | 28.40% | 28.50% |
Time accounts of $100,000 or more, Percentage of Total | 2.80% | 2.70% |
Time accounts under $100,000, Percentage of Total | 1.20% | 1.20% |
Total private accounts, Percentage of Total | 58.10% | 58.30% |
Public Funds [Member] | ||
Deposit [Line Items] | ||
Total non-interest-bearing demand deposits | $ 456,109 | $ 415,183 |
Savings and interest checking | 479,629 | 548,399 |
Money market accounts | 78,899 | 73,180 |
Time accounts of $100,000 or More | 23,502 | 24,672 |
Time accounts under $100,000 | 25 | 25 |
Total public funds | $ 582,055 | $ 646,276 |
Total non-interest-bearing demand deposits, Percentage of Total | 1.60% | 1.50% |
Savings and interest checking, Percentage of Total | 1.70% | 2.00% |
Money market accounts, Percentage of Total | 0.30% | 0.30% |
Time accounts of $100,000 or more, Percentage of Total | 0.10% | 0.10% |
Time accounts under $100,000, Percentage of Total | 0.00% | 0.00% |
Total public funds, Percentage of Total | 2.10% | 2.40% |
Deposits - Additional Informati
Deposits - Additional Information About Corporation's Deposits (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Banking and Thrift [Abstract] | ||
Deposits from the Certificate of Deposit Account Registry Service (CDARS) deposits | $ 364 | $ 361 |
Deposits from foreign sources (primarily Mexico) | 787,331 | 805,828 |
Deposits not covered by deposit insurance | $ 13,592,104 | $ 13,115,796 |
Commitments and Contingencies -
Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | |||
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019 | Jan. 01, 2019 | |
Operating Lease, Right-of-Use Asset | $ 302,000 | $ 297,700 | $ 170,500 | |
Operating Lease, Liability | 331,500 | $ 323,700 | $ 174,400 | |
Lessee, Operating Lease, Liability, Payments, Due | 7,700 | $ 6,000 | ||
Significant change in expected future minimum lease payments since year end | $ 0 |
Commitments and Contingencies_2
Commitments and Contingencies - Financial Instruments with Off-Balance-Sheet Risk (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Standby Letters of Credit [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Financial instruments with off- balance-sheet risk | $ 268,202 | $ 260,587 |
Deferred Standby Letter Of Credit Fees [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Financial instruments with off- balance-sheet risk | 1,773 | 1,276 |
Commitments to Extend Credit [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Financial instruments with off- balance-sheet risk | $ 9,204,873 | $ 9,306,043 |
Commitments and Contingencies C
Commitments and Contingencies Commitments and Contingencies - Credit Losses on Off-Balance-Sheet Commitments (Details) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Commitments and Contingencies Disclosure [Abstract] | ||
Off-Balance Sheet, Credit Loss, Liability | $ 500 | $ 500 |
Impact of adopting ASC 326 | 39,377 | 0 |
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | 2,287 | 0 |
Off-Balance Sheet, Credit Loss, Liability | $ 42,164 | $ 500 |
Commitments and Contingencies_3
Commitments and Contingencies Commitments and Contingencies - Components of Lease Commitments Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Commitments and Contingencies Disclosure [Abstract] | ||
Amortization of lease right-of-use assets | $ 7,874 | $ 5,796 |
Short-term lease expense | 561 | 1,079 |
Non-lease components (including taxes, insurance, common maintenance, etc.) | 2,927 | 1,733 |
Total operating lease expense, excluding rent | $ 11,362 | $ 8,608 |
Capital and Regulatory Matter_2
Capital and Regulatory Matters - Additional Information (Detail) | Mar. 16, 2020USD ($)shares | Jan. 01, 2020USD ($) | Jul. 24, 2019USD ($) | Feb. 15, 2013USD ($) | Mar. 31, 2020USD ($)quartershares | Sep. 30, 2019USD ($)shares | Mar. 31, 2019USD ($)shares | Dec. 31, 2019USD ($) |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||
Preferred stock dividend rate percentage | 5.375% | |||||||
Cumulative Effect on Retained Earnings, Net of Tax | $ (29,300,000) | |||||||
CECL Transition Amount | $ (63,400,000) | |||||||
Estimated Incremental Effect of CECL | $ (34,100,000) | |||||||
Redemption of preferred stock (shares) | shares | 6,000,000 | 6,000,000 | 0 | |||||
Stock Repurchase Program, Authorized Amount | $ 100,000,000 | |||||||
Stock Repurchase Program, Period in Force | 1 year | |||||||
Treasury stock, shares, acquired | shares | 181,825 | 5,351 | ||||||
Treasury Stock, Value, Acquired, Cost Method | $ (13,973,000) | $ (519,000) | ||||||
Proceeds from Issuance of Preferred Stock and Preference Stock | $ 5,514,000 | |||||||
Preferred stock, redemption amount | $ 150,000,000 | (150,000,000) | ||||||
Maximum dividends available without prior regulatory approval | $ 395,900,000 | |||||||
Maximum number of quarterly periods by which the corporation has the right to defer interest payments on junior subordinated deferrable interest debentures | quarter | 20 | |||||||
Series A Preferred Stock [Member] | ||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||
Preferred stock liquidation preference value | 25 | $ 0 | $ 25 | |||||
Cullen/Frost [Member] | ||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||
Preferred stock value issued include for regulatory tier one capital calculations | $ 0 | $ 144,500,000 | ||||||
Preferred stock dividend rate percentage | 5.375% | 5.375% | ||||||
Cullen/Frost [Member] | Trust Preferred Securities Tier Two Capital Allowable Portion [Member] | ||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||
Trust preferred securities | $ 133,000,000 | $ 133,000,000 | ||||||
Frost Bank [Member] | ||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||
Additional Tier 1 Capital beyond Common Equity Tier 1 | $ 0 | 0 | ||||||
stock repurchase 2019 plan [Member] | Treasury Stock [Member] | ||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||
Treasury stock, shares, acquired | shares | 177,834 | 202,724 | ||||||
Treasury Stock, Value, Acquired, Cost Method | $ (13,700,000) | $ (17,200,000) | ||||||
Subordinated Debt [Member] | Cullen/Frost [Member] | ||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||
Permissible portion of subordinated note included in capital | 100,000,000 | $ 100,000,000 | ||||||
Preferred Stock [Member] | ||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||
Proceeds from Issuance of Preferred Stock and Preference Stock | $ 144,486,000 | |||||||
Preferred stock, redemption amount | 144,500,000 | (144,486,000) | ||||||
Retained Earnings [Member] | ||||||||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||||||||
Preferred stock, redemption amount | $ 5,500,000 | $ (5,514,000) |
Capital and Regulatory Matter_3
Capital and Regulatory Matters - Actual and Required Capital Ratios (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Cullen/Frost [Member] | ||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
Common Equity Tier 1 to Risk-Weighted Assets, Actual, Capital Amount | $ 2,884,385 | $ 2,857,250 |
Common Equity Tier 1 to Risk-Weighted Assets, Actual , Ratio | 12.02% | 12.36% |
Common Equity Tier 1 to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Capital Amount | $ 1,679,810 | $ 1,617,886 |
Common Equity Tier 1 to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased In, Ratio | 7.00% | 7.00% |
Common Equity Tier 1 to Risk-Weighted Assets, Required To Be Considered Well Capitalized, Capital Amount | $ 1,559,824 | $ 1,502,323 |
Common Equity Tier 1 to Risk-Weighted Assets, Required To Be Considered Well Capitalized, Ratio | 6.50% | 6.50% |
Tier 1 Capital to Risk-Weighted Assets, Actual, Capital Amount | $ 2,884,385 | $ 3,001,736 |
Tier 1 Capital to Risk-Weighted Assets, Actual, Ratio | 12.02% | 12.99% |
Tier 1 Capital to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Capital Amount | $ 2,039,770 | $ 1,964,576 |
Tier 1 Capital to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Ratio | 8.50% | 8.50% |
Tier 1 Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Capital Amount | $ 1,919,783 | $ 1,849,013 |
Tier 1 Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Ratio | 8.00% | 8.00% |
Total Capital to Risk-Weighted Assets, Actual, Capital Amount | $ 3,352,464 | $ 3,367,403 |
Total Capital to Risk-Weighted Assets, Actual, Ratio | 13.97% | 14.57% |
Total Capital to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Capital Amount | $ 2,519,715 | $ 2,426,829 |
Total Capital to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Ratio | 10.50% | 10.50% |
Total Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Capital Amount | $ 2,399,729 | $ 2,311,266 |
Total Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Ratio | 10.00% | 10.00% |
Leverage Ratio, Actual, Capital Amount | $ 2,884,385 | $ 3,001,736 |
Leverage Ratio, Actual, Ratio | 8.84% | 9.28% |
Leverage Ratio, Minimum Capital Required - Basel III Fully Phased-In, Capital Amount | $ 1,305,429 | $ 1,293,188 |
Leverage Ratio, Minimum Capital Required - Basel III Fully Phased-In, Ratio | 4.00% | 4.00% |
Leverage Ratio, Required to be Considered Well Capitalized, Capital Amount | $ 1,631,786 | $ 1,616,485 |
Leverage Ratio, Required to be Considered Well Capitalized, Ratio | 5.00% | 5.00% |
Frost Bank [Member] | ||
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
Common Equity Tier 1 to Risk-Weighted Assets, Actual, Capital Amount | $ 2,924,082 | $ 2,958,326 |
Common Equity Tier 1 to Risk-Weighted Assets, Actual , Ratio | 12.21% | 12.82% |
Common Equity Tier 1 to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Capital Amount | $ 1,676,269 | $ 1,615,206 |
Common Equity Tier 1 to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased In, Ratio | 7.00% | 7.00% |
Common Equity Tier 1 to Risk-Weighted Assets, Required To Be Considered Well Capitalized, Capital Amount | $ 1,556,535 | $ 1,499,834 |
Common Equity Tier 1 to Risk-Weighted Assets, Required To Be Considered Well Capitalized, Ratio | 6.50% | 6.50% |
Tier 1 Capital to Risk-Weighted Assets, Actual, Capital Amount | $ 2,924,082 | $ 2,958,326 |
Tier 1 Capital to Risk-Weighted Assets, Actual, Ratio | 12.21% | 12.82% |
Tier 1 Capital to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Capital Amount | $ 2,035,469 | $ 1,961,322 |
Tier 1 Capital to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Ratio | 8.50% | 8.50% |
Tier 1 Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Capital Amount | $ 1,915,736 | $ 1,845,950 |
Tier 1 Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Ratio | 8.00% | 8.00% |
Total Capital to Risk-Weighted Assets, Actual, Capital Amount | $ 3,159,161 | $ 3,090,993 |
Total Capital to Risk-Weighted Assets, Actual, Ratio | 13.19% | 13.40% |
Total Capital to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Capital Amount | $ 2,514,403 | $ 2,422,809 |
Total Capital to Risk-Weighted Assets, Minimum Capital Required - Basel III Fully Phased-In, Ratio | 10.50% | 10.50% |
Total Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Capital Amount | $ 2,394,670 | $ 2,307,438 |
Total Capital to Risk-Weighted Assets, Required to be Considered Well Capitalized, Ratio | 10.00% | 10.00% |
Leverage Ratio, Actual, Capital Amount | $ 2,924,082 | $ 2,958,326 |
Leverage Ratio, Actual, Ratio | 8.97% | 9.15% |
Leverage Ratio, Minimum Capital Required - Basel III Fully Phased-In, Capital Amount | $ 1,304,257 | $ 1,292,743 |
Leverage Ratio, Minimum Capital Required - Basel III Fully Phased-In, Ratio | 4.00% | 4.00% |
Leverage Ratio, Required to be Considered Well Capitalized, Capital Amount | $ 1,630,322 | $ 1,615,929 |
Leverage Ratio, Required to be Considered Well Capitalized, Ratio | 5.00% | 5.00% |
Derivative Financial Instrume_3
Derivative Financial Instruments - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | ||
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019 | |
Derivative [Line Items] | |||
Weighted-average strike rate for outstanding interest rate caps | 2.86% | ||
Approximate credit exposure related to swaps with bank customers | $ 96,800 | ||
Cash collateral for borrowed securities deposited with other financial institutions | 41,600 | ||
Interest rate swaps with upstream financial institution counterparties [Member] | |||
Derivative [Line Items] | |||
Approximate credit exposure related to swaps with bank customers | 22,600 | ||
Not Designated as Hedging Instrument [Member] | Financial Institution Counterparties Loan Lease Interest Rate Swaps Liabilities [Member] | |||
Derivative [Line Items] | |||
Estimated fair value of derivative contracts cleared through Chicago Mercantile Exchange | 0 | $ 0 | |
Notional Amount | 1,191,926 | $ 1,002,860 | |
Other Income [Member] | Not Designated as Hedging Instrument [Member] | Put Option [Member] | |||
Derivative [Line Items] | |||
Amount of gain (loss) included in income | 5,980 | $ 0 | |
US Treasury Securities [Member] | Not Designated as Hedging Instrument [Member] | Put Option [Member] | |||
Derivative [Line Items] | |||
Notional Amount | $ 500,000 |
Derivative Financial Instrume_4
Derivative Financial Instruments - Schedule of Notional Amounts and Estimated Fair Values of Interest Rate Derivative Contracts Outstanding (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Designated as Hedging Instrument [Member] | Financial institution counterparties Loan/lease interest rate swaps assets [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Notional Amount | $ 0 | $ 2,545 |
Estimated Fair Value | 0 | 6 |
Designated as Hedging Instrument [Member] | Financial institution counterparties Loan/lease interest rate swaps liabilities [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Notional Amount | 4,732 | 6,000 |
Estimated Fair Value | (219) | (138) |
Non Designated as Hedging Instrument [Member] | Financial institution counterparties Loan/lease interest rate swaps assets [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Notional Amount | 0 | 122,788 |
Estimated Fair Value | 0 | 67 |
Non Designated as Hedging Instrument [Member] | Financial institution counterparties Loan/lease interest rate swaps liabilities [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Notional Amount | 1,191,926 | 1,002,860 |
Estimated Fair Value | (37,403) | (19,483) |
Non Designated as Hedging Instrument [Member] | Financial institution counterparties Loan/lease interest-rate caps assets [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Notional Amount | 155,597 | 107,835 |
Estimated Fair Value | 682 | 266 |
Non Designated as Hedging Instrument [Member] | Customer counterparties Loan/lease interest rate swaps assets [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Notional Amount | 1,191,926 | 1,002,860 |
Estimated Fair Value | 97,232 | 43,857 |
Non Designated as Hedging Instrument [Member] | Customer counterparties Loan/lease interest rate swaps liabilities [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Notional Amount | 0 | 122,788 |
Estimated Fair Value | 0 | (310) |
Non Designated as Hedging Instrument [Member] | Customer counterparties Loan/lease interest rate caps liabilities [Member] | ||
Derivatives, Fair Value [Line Items] | ||
Notional Amount | 155,597 | 107,835 |
Estimated Fair Value | $ (682) | $ (266) |
Derivative Financial Instrume_5
Derivative Financial Instruments - Schedule of Weighted-Average Rates Paid and Received for Interest Rate Swaps Outstanding (Detail) | Mar. 31, 2020 |
Weighted Average Interest Rate Paid [Member] | |
Short-duration insurance contracts, discounted liabilities [Line Items] | |
Fair value hedge loan/lease interest rate swaps | 3.54% |
Weighted-Average Interest Rate Received [Member] | |
Short-duration insurance contracts, discounted liabilities [Line Items] | |
Fair value hedge loan/lease interest rate swaps | 1.26% |
Financial Institution Counterparties [Member] | Weighted Average Interest Rate Paid [Member] | |
Short-duration insurance contracts, discounted liabilities [Line Items] | |
Non-hedging interest rate swaps – financial institution counterparties | 4.05% |
Financial Institution Counterparties [Member] | Weighted-Average Interest Rate Received [Member] | |
Short-duration insurance contracts, discounted liabilities [Line Items] | |
Non-hedging interest rate swaps – financial institution counterparties | 2.93% |
Customer Counterparties [Member] | Weighted Average Interest Rate Paid [Member] | |
Short-duration insurance contracts, discounted liabilities [Line Items] | |
Non-hedging interest rate swaps – customer counterparties | 2.93% |
Customer Counterparties [Member] | Weighted-Average Interest Rate Received [Member] | |
Short-duration insurance contracts, discounted liabilities [Line Items] | |
Non-hedging interest rate swaps – customer counterparties | 4.05% |
Derivative Financial Instrume_6
Derivative Financial Instruments - Schedule of Notional Amounts and Estimated Fair Values of Commodity Derivative Positions (Detail) bbl in Thousands, MMBTU in Thousands, $ in Thousands | Mar. 31, 2020USD ($)MMBTUbbl | Dec. 31, 2019USD ($)MMBTUbbl |
Financial Institution Counterparties [Member] | Oil Commodity Derivative [Member] | ||
Derivative Instruments [Line Items] | ||
Oil/Natural Gas Derivative Assets, Notional Amount | bbl | 2,639 | 1,214 |
Oil/Natural Gas Derivative Liabilities, Notional Amount | bbl | 576 | 2,148 |
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 61,479 | $ 2,796 |
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (634) | $ (6,916) |
Financial Institution Counterparties [Member] | Natural Gas Commodity Derivative [Member] | ||
Derivative Instruments [Line Items] | ||
Oil/Natural Gas Derivative Assets, Notional Amount | MMBTU | 5,807 | 8,295 |
Oil/Natural Gas Derivative Liabilities, Notional Amount | MMBTU | 4,313 | 2,689 |
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 2,455 | $ 2,131 |
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (346) | $ (70) |
Customer Counterparties [Member] | Oil Commodity Derivative [Member] | ||
Derivative Instruments [Line Items] | ||
Oil/Natural Gas Derivative Assets, Notional Amount | bbl | 576 | 2,172 |
Oil/Natural Gas Derivative Liabilities, Notional Amount | bbl | 2,639 | 1,190 |
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 645 | $ 7,208 |
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (61,087) | $ (2,652) |
Customer Counterparties [Member] | Natural Gas Commodity Derivative [Member] | ||
Derivative Instruments [Line Items] | ||
Oil/Natural Gas Derivative Assets, Notional Amount | MMBTU | 4,313 | 2,689 |
Oil/Natural Gas Derivative Liabilities, Notional Amount | MMBTU | 5,807 | 8,295 |
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 397 | $ 83 |
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (2,392) | $ (2,039) |
Derivative Financial Instrume_7
Derivative Financial Instruments - Notional Amount and Fair Value of Foreign Currency Forward Contract (Detail) $ in Thousands, $ in Thousands | Mar. 31, 2020USD ($) | Mar. 31, 2020CAD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2019CAD ($) |
Financial Institution Counterparties [Member] | Other Liabilities [Member] | Non Designated as Hedging Instrument [Member] | ||||
Derivative Counter Party [Line Items] | ||||
Forward Contracts – Liability Notional Amount | $ 2,821 | $ 4,593 | ||
Customer Counterparties [Member] | Other Assets [Member] | Non Designated as Hedging Instrument [Member] | ||||
Derivative Counter Party [Line Items] | ||||
Forward Contracts – Assets Notional Amount | $ 2,814 | $ 4,583 | ||
Foreign Exchange Forward [Member] | Financial Institution Counterparties [Member] | ||||
Derivative Counter Party [Line Items] | ||||
Forward Contracts – Liability Estimated Fair Value | $ (16) | $ (33) | ||
Foreign Exchange Forward [Member] | Customer Counterparties [Member] | ||||
Derivative Counter Party [Line Items] | ||||
Forward Contracts – Assets Estimated Fair Value | $ 24 | $ 45 |
Derivative Financial Instrume_8
Derivative Financial Instruments - Schedule of Amounts Related to Interest Rate Derivatives Designated as Hedges of Fair Value (Detail) - Designated as Hedging Instrument [Member] - Commercial Loan/Lease Interest Rate Swaps [Member] - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Interest Income on Loans [Member] | ||
Derivative Instruments, Gain (Loss) [Line Items] | ||
Amount of gain (loss) included in income | $ (8) | $ 26 |
Other Non-Interest Expense [Member] | ||
Derivative Instruments, Gain (Loss) [Line Items] | ||
Amount of gain (loss) included in income | $ 1 | $ 0 |
Derivative Financial Instrume_9
Derivative Financial Instruments - Schedule of Amounts Related to Non-Hedging Interest Rate and Commodity Derivatives (Detail) - Non Designated as Hedging Instrument [Member] - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Interest Rate Contract [Member] | Other Non-Interest Income [Member] | ||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | ||
Amount of gain (loss) included in income (expense) | $ 2,039 | $ 586 |
Interest Rate Contract [Member] | Other Non-Interest Expense [Member] | ||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | ||
Amount of gain (loss) included in income (expense) | 0 | 0 |
Commodity Contract [Member] | Other Non-Interest Income [Member] | ||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | ||
Amount of gain (loss) included in income (expense) | 139 | 103 |
Foreign Currency Derivative Contracts [Member] | Other Non-Interest Income [Member] | ||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | ||
Amount of gain (loss) included in income (expense) | 7 | 17 |
Put Option [Member] | Other Non-Interest Income [Member] | ||
Other Non Interest Income Non Hedging Interest Rate Derivatives [Line Items] | ||
Amount of gain (loss) included in income (expense) | $ 5,980 | $ 0 |
Balance Sheet Offsetting - Fina
Balance Sheet Offsetting - Financial Instruments Eligible for Offset Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivatives, Financial Assets | $ 64,616 | $ 5,266 |
Gross Amount Offset, Derivatives, Financial assets | 0 | 0 |
Net Amount Recognized, Derivatives, Financial assets | 64,616 | 5,266 |
Gross Amount Recognized, Resell agreements, Financial assets | 20,000 | 31,299 |
Gross Amount Offset, Resell agreements, Financial assets | 0 | 0 |
Net Amount Recognized, Resell agreements, Financial assets | 20,000 | 31,299 |
Gross Amount Recognized, Financial assets | 84,616 | 36,565 |
Gross Amount Offset, Financial assets | 0 | 0 |
Net Amount Recognized, Financial assets | 84,616 | 36,565 |
Gross Amount Recognized, Derivatives, Financial Liabilities | 38,618 | 26,640 |
Gross Amount Offset, Derivatives, Financial liabilities | 0 | 0 |
Net Amount Recognized, Derivatives, Financial liabilities | 38,618 | 26,640 |
Gross Amount Recognized, Repurchase agreements, Financial liabilities | 1,146,478 | 1,668,142 |
Gross Amount Offset, Repurchase agreements, Financial liabilities | 0 | 0 |
Net Amount Recognized, Repurchase agreements, Financial liabilities | 1,146,478 | 1,668,142 |
Gross Amount Recognized, Financial liabilities | 1,185,096 | 1,694,782 |
Gross Amount Offset, Financial liabilities | 0 | 0 |
Net Amount Recognized, Financial Liabilities | 1,185,096 | 1,694,782 |
Loan/lease interest rate swaps and caps [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivatives, Financial Assets | 682 | 339 |
Gross Amount Offset, Derivatives, Financial assets | 0 | 0 |
Net Amount Recognized, Derivatives, Financial assets | 682 | 339 |
Commodity swaps and options [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivatives, Financial Assets | 63,934 | 4,927 |
Gross Amount Offset, Derivatives, Financial assets | 0 | 0 |
Net Amount Recognized, Derivatives, Financial assets | 63,934 | 4,927 |
Gross Amount Recognized, Derivatives, Financial Liabilities | 980 | 6,986 |
Gross Amount Offset, Derivatives, Financial liabilities | 0 | 0 |
Net Amount Recognized, Derivatives, Financial liabilities | 980 | 6,986 |
Foreign currency forward contracts [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivatives, Financial Assets | 0 | |
Gross Amount Offset, Derivatives, Financial assets | 0 | |
Net Amount Recognized, Derivatives, Financial assets | 0 | |
Gross Amount Recognized, Derivatives, Financial Liabilities | 16 | 33 |
Gross Amount Offset, Derivatives, Financial liabilities | 0 | 0 |
Net Amount Recognized, Derivatives, Financial liabilities | 16 | 33 |
Loan/lease interest rate swaps [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Gross Amount Recognized, Derivatives, Financial Liabilities | 37,622 | 19,621 |
Gross Amount Offset, Derivatives, Financial liabilities | 0 | 0 |
Net Amount Recognized, Derivatives, Financial liabilities | $ 37,622 | $ 19,621 |
Balance Sheet Offsetting - Fi_2
Balance Sheet Offsetting - Financial Instruments Derivative Assets Liabilities and Resell Agreements Net of Amount Not Offset (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | $ 64,616 | $ 5,266 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | (19,221) | (5,236) |
Gross Amount Not Offset Collateral, Derivatives, Financial Assets | (45,090) | 0 |
Net Amount, Derivatives, Financial Assets | 305 | 30 |
Net Amount Recognized, Resell agreements, Financial Assets | 20,000 | 31,299 |
Gross Amounts Not Offset Financial Instruments, Resell Agreements | 0 | 0 |
Gross Amounts Not Offset Collateral, Resell Agreements, Financial Assets | (20,000) | (31,299) |
Net Amount, Financial Assets, Resell Agreements | 0 | 0 |
Net Amount Recognized, Total Financial Assets | 84,616 | 36,565 |
Gross Amounts Not Offset Collateral, Financial Assets | (65,090) | (31,299) |
Net Amount, Financial Assets | 305 | 30 |
Net Amount Recognized, Derivatives, Financial Liabilities | 38,618 | 26,640 |
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities | (19,221) | (5,236) |
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities | (19,333) | (21,404) |
Net Amount, Derivatives, Financial Liabilities | 64 | 0 |
Net Amount Recognized, Repurchase Agreements, Financial Liabilities | 1,146,478 | 1,668,142 |
Gross Amounts Not Offset Financial Instruments, Repurchase Agreements, Financial Liabilities | 0 | 0 |
Gross Amounts Not Offset Collateral, Repurchase Agreements, Financial Liabilities | (1,146,478) | (1,668,142) |
Net Amount, Repurchase Agreements, Financial Liabilities | 0 | 0 |
Net Amount Recognized, Financial Liabilities | 1,185,096 | 1,694,782 |
Gross Amounts Not Offset Collateral, Financial Liabilities | (1,165,811) | (1,689,546) |
Net Amount, Financial Liabilities | 64 | 0 |
Counterparty A [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | 10 | 39 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | (10) | (39) |
Gross Amount Not Offset Collateral, Derivatives, Financial Assets | 0 | 0 |
Net Amount, Derivatives, Financial Assets | 0 | 0 |
Net Amount Recognized, Derivatives, Financial Liabilities | 7,606 | 5,192 |
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities | (10) | (39) |
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities | (7,580) | (5,153) |
Net Amount, Derivatives, Financial Liabilities | 16 | 0 |
Counterparty B [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | 10,483 | 1,650 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | (10,483) | (1,650) |
Gross Amount Not Offset Collateral, Derivatives, Financial Assets | 0 | 0 |
Net Amount, Derivatives, Financial Assets | 0 | 0 |
Net Amount Recognized, Derivatives, Financial Liabilities | 11,111 | 7,424 |
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities | (10,483) | (1,650) |
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities | (580) | (5,774) |
Net Amount, Derivatives, Financial Liabilities | 48 | 0 |
Counterparty C [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | 1 | |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | (1) | |
Gross Amount Not Offset Collateral, Derivatives, Financial Assets | 0 | |
Net Amount, Derivatives, Financial Assets | 0 | |
Net Amount Recognized, Derivatives, Financial Liabilities | 146 | 135 |
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities | 0 | (1) |
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities | (146) | (134) |
Net Amount, Derivatives, Financial Liabilities | 0 | 0 |
Other Counterparties [Member] | ||
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
Net Amount Recognized, Derivatives, Financial Assets | 54,123 | 3,576 |
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets | (8,728) | (3,546) |
Gross Amount Not Offset Collateral, Derivatives, Financial Assets | (45,090) | 0 |
Net Amount, Derivatives, Financial Assets | 305 | 30 |
Net Amount Recognized, Derivatives, Financial Liabilities | 19,755 | 13,889 |
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities | (8,728) | (3,546) |
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities | (11,027) | (10,343) |
Net Amount, Derivatives, Financial Liabilities | $ 0 | $ 0 |
Balance Sheet Offsetting Balanc
Balance Sheet Offsetting Balance Sheet Offsetting - Remaining Contractual Maturity of the Securities Sold Under Agreement to Repurchase (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
Mar. 31, 2020 | Dec. 31, 2019 | |
Remaining Contractual Maturity of the Securities Sold Under Agreement to Repurchase [Line Items] | ||
Remaining contractual maturity of the agreements overnight and continuous | $ 1,146,478 | $ 1,668,142 |
Remaining contractual maturity of the agreements up to 30 Days | 0 | 0 |
Remaining contractual maturity of the agreements 30 to 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements greater than 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements total | 1,146,478 | 1,668,142 |
Securities Sold under Agreements to Repurchase, Gross | 1,146,478 | 1,668,142 |
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities | 0 | 0 |
US Treasury Securities [Member] | ||
Remaining Contractual Maturity of the Securities Sold Under Agreement to Repurchase [Line Items] | ||
Remaining contractual maturity of the agreements overnight and continuous | 435,904 | |
Remaining contractual maturity of the agreements up to 30 Days | 0 | |
Remaining contractual maturity of the agreements 30 to 90 Days | 0 | |
Remaining contractual maturity of the agreements greater than 90 Days | 0 | |
Remaining contractual maturity of the agreements total | 435,904 | |
Residential Mortgage Backed Securities [Member] | ||
Remaining Contractual Maturity of the Securities Sold Under Agreement to Repurchase [Line Items] | ||
Remaining contractual maturity of the agreements overnight and continuous | 1,146,478 | 1,232,238 |
Remaining contractual maturity of the agreements up to 30 Days | 0 | 0 |
Remaining contractual maturity of the agreements 30 to 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements greater than 90 Days | 0 | 0 |
Remaining contractual maturity of the agreements total | $ 1,146,478 | $ 1,232,238 |
Stock-Based Compensation Stock-
Stock-Based Compensation Stock-Based Compensation - Narrative (Details) | Mar. 31, 2020shares |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 1,115,490 |
Stock-Based Compensation - Summ
Stock-Based Compensation - Summary of Activity in Corporation's Active Stock Plans (Detail) - $ / shares | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Stock options exercised, Number of Shares | (66,215) | (100,865) |
Director deferred stock units outstanding [Member] | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Beginning Balance, Number of Shares/Units | 55,370 | |
Ending Balance, Number of Shares/Units | 55,370 | |
Beginning Balance, Weighted-Average Grant-Date Fair Value | $ 74.76 | |
Ending Balance, Weighted-Average Grant-Date Fair Value | $ 74.76 | |
Non-Vested Stock Awards/Stock Units Outstanding [Member] | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Beginning Balance, Number of Shares/Units | 440,647 | |
Granted, Number of Units | 458 | |
Forfeited/expired, Number of Shares/Units | (1,438) | |
Ending Balance, Number of Shares/Units | 439,667 | |
Beginning Balance, Weighted-Average Grant-Date Fair Value | $ 90.22 | |
Granted Weighted-Average Grant-Date Fair Value | 65.43 | |
Forfeited/Expired, Weighted-Average Price | 88.69 | |
Ending Balance, Weighted-Average Grant-Date Fair Value | $ 90.20 | |
Stock Options Outstanding [Member] | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Beginning Balance, Number of Shares | 1,980,866 | |
Stock options exercised, Number of Shares | (24,460) | |
Forfeited/expired, Number of Shares | (2,000) | |
Ending Balance, Number of Shares | 1,954,406 | |
Beginning Balance, Weighted-Average Exercise Price | $ 64.60 | |
Stock options exercised, Weighted-Average Exercise Price | 59.81 | |
Forfeited/expired, Weighted-Average Exercise Price | 72.02 | |
Ending Balance, Weighted-Average Exercise Price | $ 64.65 | |
Maximum [Member] | Performance Shares [Member] | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Beginning Balance, Number of Shares/Units | 177,288 | |
Stock Awards exercised/vested, Number of Shares | (41,755) | |
Forfeited/expired, Number of Shares/Units | (6,894) | |
Ending Balance, Number of Shares/Units | 128,639 | |
Beginning Balance, Weighted-Average Grant-Date Fair Value | $ 83.48 | |
Stock Award Exercised/Vested, Weighted Average Grant Date Fair Value | 69.70 | |
Forfeited/Expired, Weighted-Average Price | 81.33 | |
Ending Balance, Weighted-Average Grant-Date Fair Value | $ 88.07 |
Stock-Based Compensation - Shar
Stock-Based Compensation - Shares Issued in Connection with Stock Compensation Awards (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Share-based Payment Arrangement [Abstract] | ||
New shares issued from available authorized shares | 0 | 0 |
Issued from available treasury stock | 66,215 | 100,865 |
Total | 66,215 | 100,865 |
Proceeds from stock option exercises | $ 1,463 | $ 4,885 |
Stock-Based Compensation - Stoc
Stock-Based Compensation - Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Stock-based compensation, expense | $ 2,512 | $ 3,654 |
Income tax benefit | 465 | 584 |
Stock Options [Member] | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Stock-based compensation, expense | 0 | 382 |
Non-Vested Stock Awards/Stock Units [Member] | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Stock-based compensation, expense | 2,264 | 2,135 |
Performance Shares [Member] | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Stock-based compensation, expense | $ 248 | $ 1,137 |
Stock-Based Compensation - Unre
Stock-Based Compensation - Unrecognized Stock-Based Compensation Expense (Detail) $ in Thousands | Mar. 31, 2020USD ($) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Total | $ 22,060 |
Non-Vested Stock Awards/Stock Units [Member] | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Non-vested stock awards/stock units and Performance stock units | 16,524 |
Maximum [Member] | Performance Shares [Member] | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Non-vested stock awards/stock units and Performance stock units | $ 5,536 |
Earnings Per Common Share - Bas
Earnings Per Common Share - Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Earnings Per Share [Abstract] | ||
Net income | $ 54,753 | $ 116,496 |
Less: Preferred stock dividends | 2,016 | 2,016 |
Redemption of preferred stock | 5,514 | 0 |
Net income available to common shareholders | 47,223 | 114,480 |
Less: Earnings allocated to participating securities | 445 | 980 |
Distributed earnings allocated to common stock | 44,512 | 42,238 |
Undistributed earnings allocated to common stock | 2,266 | 71,262 |
Net earnings allocated to common stock | $ 46,778 | $ 113,500 |
Weighted-average shares outstanding for basic earnings per common share | 62,642,682 | 63,009,060 |
Dilutive effect of stock compensation | 407,154 | 818,896 |
Weighted-average shares outstanding for diluted earnings per common share | 63,049,836 | 63,827,956 |
Defined Benefit Plans - Net Per
Defined Benefit Plans - Net Periodic Cost (Benefit) (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Retirement Benefits [Abstract] | ||
Expected return on plan assets, net of expenses | $ (3,072) | $ (2,693) |
Interest cost on projected benefit obligation | 1,252 | 1,618 |
Net amortization and deferral | 1,330 | 1,406 |
Net periodic expense (benefit) | $ (490) | $ 331 |
Defined Benefit Plans Additiona
Defined Benefit Plans Additional Information (Details) | Mar. 31, 2020USD ($) |
Retirement Benefits [Abstract] | |
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year | $ 0 |
Income Taxes - Additional Infor
Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | |
Mar. 31, 2020 | Dec. 31, 2019 | |
Income Tax [Abstract] | ||
Deferred Tax Liabilities, Net | $ 67.6 | $ 75.8 |
Valuation allowance | $ 0 | |
U.S. federal statutory income tax rate, percent | 21.00% | |
Unrecognized tax benefits | $ 0 |
Income Taxes - Income Tax Expen
Income Taxes - Income Tax Expense (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Income Tax Disclosure [Abstract] | ||
Current income tax expense (benefit) | $ 29,412 | $ 14,999 |
Deferred income tax expense (benefit) | (26,089) | (1,044) |
Income tax expense, as reported | $ 3,323 | $ 13,955 |
Effective tax rate | 5.70% | 10.70% |
Other Comprehensive Income (L_3
Other Comprehensive Income (Loss) - Component of Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Equity [Abstract] | ||
Securities available for sale and transferred securities, Change in net unrealized gain/loss during the period, Before Tax Amount | $ 230,118 | $ 198,146 |
Securities available for sale and transferred securities, Change in net unrealized gain on securities transferred to held to maturity, Before Tax Amount | (377) | (344) |
Securities available for sale and transferred securities, Reclassification adjustment for net (gains) losses included in net income, Before Tax Amount | (108,989) | 0 |
Total securities available for sale and transferred securities, before tax amount | 120,752 | 197,802 |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit), before tax amount | 1,330 | 1,406 |
Total defined-benefit post-retirement benefit plans | 1,330 | 1,406 |
Total other comprehensive income (loss), before tax | 122,082 | 199,208 |
Securities available for sale and transferred securities, Change in net unrealized gain/loss during the period, Tax Expense (Benefit) | 48,325 | 41,611 |
Securities available for sale and transferred securities, Change in net unrealized gain on securities transferred to held to maturity, Tax Expense (Benefit) | (79) | (72) |
Securities available for sale and transferred securities, Reclassification adjustment for net (gains) losses included in net income, Tax Expense (Benefit) | (22,888) | 0 |
Total securities available for sale and transferred securities, Tax Expense (Benefit) | 25,358 | 41,539 |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit), Tax Expense (Benefit) | 279 | 295 |
Total defined-benefit post-retirement benefit plans, Tax Expense (Benefit) | 279 | 295 |
Total other comprehensive income (loss), Tax Expense (Benefit) | 25,637 | 41,834 |
Securities available for sale and transferred securities, Change in net unrealized gain/loss during the period, Net of Tax | 181,793 | 156,535 |
Securities available for sale and transferred securities, Change in net unrealized gain on securities transferred to held to maturity, Net of Tax | (298) | (272) |
Securities available for sale and transferred securities, Reclassification adjustment for net (gains) losses included in net income, Net of Tax | (86,101) | 0 |
Total securities available for sale and transferred securities, Net of Tax | 95,394 | 156,263 |
Reclassification adjustment for net amortization of actuarial gain/lloss included in net income as a component of net periodic cost (benefit), Net of Tax | 1,051 | 1,111 |
Total defined-benefit post-retirement benefit plans, Net of Tax Amount | 1,051 | 1,111 |
Other comprehensive income (loss), net of tax | $ 96,445 | $ 157,374 |
Other Comprehensive Income - Sc
Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income, Net of Tax (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||
Beginning Balance | $ 267,370 | |
Other comprehensive income (loss), net of tax | 96,445 | $ 157,374 |
Ending Balance | 363,815 | |
Securities Available For Sale [Member] | ||
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||
Beginning Balance | 313,304 | (16,103) |
Other comprehensive income (loss) before reclassifications | 181,495 | 156,263 |
Reclassification of amounts included in net income | (86,101) | 0 |
Other comprehensive income (loss), net of tax | 95,394 | 156,263 |
Ending Balance | 408,698 | 140,160 |
Defined Benefit Plans [Member] | ||
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||
Beginning Balance | (45,934) | (47,497) |
Other comprehensive income (loss) before reclassifications | 0 | 0 |
Reclassification of amounts included in net income | 1,051 | 1,111 |
Other comprehensive income (loss), net of tax | 1,051 | 1,111 |
Ending Balance | (44,883) | (46,386) |
AOCI Attributable to Parent [Member] | ||
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||
Beginning Balance | 267,370 | (63,600) |
Other comprehensive income (loss) before reclassifications | 181,495 | 156,263 |
Reclassification of amounts included in net income | (85,050) | 1,111 |
Other comprehensive income (loss), net of tax | 96,445 | 157,374 |
Ending Balance | $ 363,815 | $ 93,774 |
Operating Segments - Additional
Operating Segments - Additional Information (Detail) | 3 Months Ended |
Mar. 31, 2020Segment | |
Segment Reporting [Abstract] | |
Number of primary operating segments | 2 |
Operating Segments - Summary of
Operating Segments - Summary of Operating Results by Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2020 | Mar. 31, 2019 | |
Segment Reporting Information [Line Items] | ||
Revenues from (expenses to) external customers | $ 457,436 | $ 343,254 |
Net income | 54,753 | 116,496 |
Operating Segments [Member] | Banking [Member] | ||
Segment Reporting Information [Line Items] | ||
Revenues from (expenses to) external customers | 419,429 | 308,613 |
Net income | 52,024 | 112,917 |
Operating Segments [Member] | Frost Wealth Advisors [Member] | ||
Segment Reporting Information [Line Items] | ||
Revenues from (expenses to) external customers | 40,607 | 37,351 |
Net income | 5,587 | 6,400 |
Operating Segments [Member] | Non-Banks [Member] | ||
Segment Reporting Information [Line Items] | ||
Revenues from (expenses to) external customers | (2,600) | (2,710) |
Net income | $ (2,858) | $ (2,821) |
Fair Value Measurements - Addit
Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Financial instruments using fair value measurement option | $ 0 | $ 0 |
Fair Value Measurements - Finan
Fair Value Measurements - Financial Assets and Financial 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] | ||
Securities available for sale, estimated fair value | $ 10,467,977 | $ 11,269,591 |
Trading account securities | 25,921 | 24,298 |
Derivative assets | 64,616 | 5,266 |
Derivative liabilities | 38,618 | 26,640 |
Interest rate swaps, caps and floors [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets | 97,914 | 44,196 |
Derivative liabilities | 38,304 | 20,197 |
Commodity swaps and options [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets | 64,976 | 12,218 |
Derivative liabilities | 64,459 | 11,677 |
Foreign Exchange Forward [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets | 24 | 45 |
Derivative liabilities | 16 | 33 |
U.S. Treasury [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, estimated fair value | 1,167,264 | 1,948,133 |
Trading account securities | 24,491 | 24,298 |
Residential Mortgage Backed Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, estimated fair value | 2,089,946 | 2,207,594 |
States and political subdivisions [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, estimated fair value | 7,167,866 | 7,070,997 |
Trading account securities | 1,430 | |
Other [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, estimated fair value | 42,901 | 42,867 |
Level 1 [Member] | Foreign Exchange Forward [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets | 24 | 45 |
Derivative liabilities | 16 | 33 |
Level 1 [Member] | U.S. Treasury [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, estimated fair value | 1,167,264 | 1,948,133 |
Trading account securities | 24,491 | 24,298 |
Level 2 [Member] | Interest rate swaps, caps and floors [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets | 97,914 | 44,196 |
Derivative liabilities | 38,304 | 20,197 |
Level 2 [Member] | Commodity swaps and options [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative assets | 64,976 | 12,218 |
Derivative liabilities | 64,459 | 11,677 |
Level 2 [Member] | Residential Mortgage Backed Securities [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, estimated fair value | 2,089,946 | 2,207,594 |
Level 2 [Member] | States and political subdivisions [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, estimated fair value | 7,167,866 | 7,070,997 |
Trading account securities | 1,430 | |
Level 2 [Member] | Other [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Securities available for sale, estimated fair value | $ 42,901 | $ 42,867 |
Fair Value Measurements - Impai
Fair Value Measurements - Impaired Loans Remeasured and Reported at Fair Value of Underlying Collateral (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Mar. 31, 2019 |
Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Carrying value of impaired loans before allocations | $ 1,919 | $ 11,487 |
Specific valuation allowance allocations | 70 | (256) |
Loans receivable, fair value disclosure | 1,989 | 11,231 |
Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Carrying value of impaired loans before allocations | 3,867 | 37,525 |
Specific valuation allowance allocations | (244) | (3,441) |
Loans receivable, fair value disclosure | $ 3,623 | $ 34,084 |
Fair Value Measurements - Forec
Fair Value Measurements - Foreclosed Assets Remeasured and Reported at Fair Value (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Mar. 31, 2019 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Foreclosed Assets Remeasured Subsequent to initial Recognition Carrying value of foreclosed assets prior to remeasurement | $ 328 | $ 0 |
Foreclosed Assets Remeasured Subsequent to Initial Recognition Write-downs included in other non-interest expense | (231) | 0 |
Fair Value of Foreclosed Assets remeasured subsequent to initial recognition | $ 97 | $ 0 |
Fair Value Measurements - Estim
Fair Value Measurements - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Cash and cash equivalents | $ 4,195,585 | $ 3,788,181 | $ 2,281,454 | $ 3,955,779 |
Securities held to maturity | 1,984,349 | 2,030,005 | ||
Loans, net | 15,074,379 | 14,618,165 | ||
Deposits | 28,140,867 | 27,639,564 | ||
Federal funds purchased and repurchase agreements | 1,170,978 | 1,695,342 | ||
Junior subordinated deferrable interest debentures, net of unamortized issuance costs | 136,314 | 136,299 | ||
Subordinated notes payable and other borrowings | 98,904 | 98,865 | ||
Carrying Amount [Member] | Level 2 [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Cash and cash equivalents | 4,195,585 | 3,788,181 | ||
Securities held to maturity | 1,984,149 | 2,030,005 | ||
Cash surrender value of life insurance policies | 188,078 | 187,156 | ||
Accrued interest receivable | 123,995 | 183,850 | ||
Deposits | 28,140,867 | 27,639,564 | ||
Federal funds purchased and repurchase agreements | 1,170,978 | 1,695,342 | ||
Junior subordinated deferrable interest debentures, net of unamortized issuance costs | 136,314 | 136,299 | ||
Subordinated notes payable and other borrowings | 98,904 | 98,865 | ||
Accrued interest payable | 10,684 | 12,393 | ||
Carrying Amount [Member] | Level 3 [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Loans, net | 15,074,379 | 14,618,165 | ||
Estimated Fair Value [Member] | Level 2 [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Cash and cash equivalents | 4,195,585 | 3,788,181 | ||
Securities held to maturity | 2,057,879 | 2,048,675 | ||
Cash surrender value of life insurance policies | 188,078 | 187,156 | ||
Accrued interest receivable | 123,995 | 183,850 | ||
Deposits | 28,150,786 | 27,641,255 | ||
Federal funds purchased and repurchase agreements | 1,170,978 | 1,695,342 | ||
Junior subordinated deferrable interest debentures, net of unamortized issuance costs | 137,115 | 137,115 | ||
Subordinated notes payable and other borrowings | 102,250 | 89,077 | ||
Accrued interest payable | 10,684 | 12,393 | ||
Estimated Fair Value [Member] | Level 3 [Member] | ||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
Loans, net | $ 15,246,193 | $ 14,654,615 |