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Fair Value of Assets and Liabilities | 3 Months Ended
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Mar. 31, 2024
Fair Value Disclosures [Abstract] |
Fair Value of Assets and Liabilities | Note 13. Fair Value of Assets and Liabilities Fair Value Hierarchy Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for an asset or liability in an orderly transaction between market participants at the measurement date. GAAP established a fair value hierarchy that prioritizes the use of inputs used in valuation methodologies into the following three levels:
Level 1: | Inputs to the valuation methodology are quoted prices, unadjusted, for identical assets or liabilities in active markets. A quoted price in an active market provides the most reliable evidence of fair value and is used to measure fair value whenever available. A contractually binding sales price also provides reliable evidence of fair value.
Level 2: | Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets; inputs to the valuation methodology include quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs to the valuation methodology that utilize model-based techniques for which all significant assumptions are observable in the market.
Level 3: | Inputs to the valuation methodology are unobservable and significant to the fair value measurement; inputs to the valuation methodology that utilize model-based techniques for which significant assumptions are not observable in the market; or inputs to the valuation methodology that require significant management judgment or estimation, some of which may be internally developed.
In some instances, an instrument may fall into multiple levels of the fair value hierarchy. In such instances, the instrument’s level within the fair value hierarchy is based on the lowest of the three levels (with Level 3 being the lowest) that is significant to the fair value measurement. Our assessment of the significance of an input requires judgment and considers factors specific to the instrument. Assets and Liabilities Measured at Fair Value on a Recurring Basis Investment Securities Available-for-Sale Level 1 investment securities are comprised of debt securities issued by the U.S. Treasury, as quoted prices were available, unadjusted, for identical securities in active markets. Level 2 investment securities were primarily comprised of debt securities issued by the Small Business Administration, states and municipalities, corporations, as well as mortgage-backed securities issued by government agencies and government-sponsored enterprises. Fair values were estimated primarily by obtaining quoted prices for similar assets in active markets or through the use of pricing models. In cases where there may be limited or less transparent information provided by the Company’s third party pricing service, fair value may be estimated by the use of secondary pricing services or through the use of non-binding third party broker quotes. Loans Held for Sale The fair value of the Company’s residential mortgage loans held for sale was determined based on quoted prices for similar loans in active markets, and therefore, is classified as a Level 2 measurement. Mortgage Servicing Rights The Company estimates the fair value of mortgage servicing rights by using a discounted cash flow model to calculate the present value of estimated future net servicing income. The Company stratifies its mortgage servicing portfolio on the basis of loan type. The assumptions used in the discounted cash flow model are those that the Company believes market participants would use in estimating future net servicing income. Significant assumptions in the valuation of mortgage servicing rights include estimated loan repayment rates, the discount rate, servicing costs, and the timing of cash flows, among other factors. Mortgage servicing rights are classified as Level 3 measurements due to the use of significant unobservable inputs, as well as significant management judgment and estimation. Other Assets Other assets recorded at fair value on a recurring basis are primarily comprised of investments related to deferred compensation arrangements. Quoted prices for these investments, primarily in mutual funds, are available in active markets. Thus, the Company’s investments related to deferred compensation arrangements are classified as Level 1 measurements in the fair value hierarchy. Derivative Financial Instruments Derivative financial instruments recorded at fair value on a recurring basis are comprised of interest rate lock commitments (“IRLCs”), forward commitments, interest rate swap agreements, foreign exchange contracts, and Visa Class B to Class A shares conversion rate swap agreements. The fair values of IRLCs are calculated based on the value of the underlying loan held for sale, which in turn is based on quoted prices for similar loans in the secondary market. However, this value is adjusted by a factor which considers the likelihood that the loan in a locked position will ultimately close. This factor, the closing ratio, is derived from the Bank’s internal data and is adjusted using significant management judgment. As such, IRLCs are classified as Level 3 measurements. Forward commitments are classified as Level 2 measurements as they are primarily based on quoted prices from the secondary market based on the settlement date of the contracts, interpolated or extrapolated, if necessary, to estimate a fair value as of the end of the reporting period. The fair values of interest rate swap agreements are calculated using a discounted cash flow approach and utilize Level 2 observable inputs such as a market yield curve, effective date, maturity date, notional amount, and stated interest rate. The valuation methodology for interest rate swaps with financial institution counterparties (and the related customer interest rate swaps) is based on the Secured Overnight Financing Rate ("SOFR"). In addition, the Company includes in its fair value calculation a credit spread adjustment which is based primarily on management judgment. Thus, interest rate swap agreements are classified as a Level 3 measurement. The fair values of foreign exchange contracts are calculated using the Bank’s multi-currency accounting system which utilizes contract specific information such as currency, maturity date, contractual amount, and strike price, along with market data information such as the spot rates of specific currency and yield curves. Foreign exchange contracts are classified as Level 2 measurements because while they are valued using the Bank’s multi-currency accounting system, significant management judgment or estimation is not required. The fair value of the Visa Class B restricted shares to Class A unrestricted common shares conversion rate swap agreements represent the amount owed by the Company to the buyer of the Visa Class B shares as a result of a reduction of the conversion ratio subsequent to the sales date. As of March 31, 2024, and December 31, 2023, the conversion rate swap agreements were valued at zero as reductions to the conversion ratio were neither probable nor reasonably estimable by management. See Note 11 Derivative Financial Instruments for more information. The Company is exposed to credit risk if borrowers or counterparties fail to perform. The Company seeks to minimize credit risk through credit approvals, limits, monitoring procedures, and collateral requirements. The Company generally enters into transactions with borrowers of high credit quality and counterparties that carry high quality credit ratings. The Table below presents the balances of assets and liabilities measured at fair value on a recurring basis as of March 31, 2024, and December 31, 2023.
|  | Quoted Prices in Active Markets for Identical Assets or Liabilities |  |  | Significant Other Observable Inputs |  |  | Significant Unobservable Inputs |  |  |  |
(dollars in thousands) |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | Total |
March 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Investment Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Debt Securities Issued by the U.S. Treasury and Government Agencies |  | $ | 145,889 |  |  | $ | 60,423 |  |  | $ | — |  |  | $ | 206,312 |
Debt Securities Issued by States and Political Subdivisions |  |  | — |  |  |  | 63,451 |  |  |  | — |  |  |  | 63,451 |
Debt Securities Issued by U.S. Government-Sponsored Enterprises |  |  | — |  |  |  | 1,425 |  |  |  | — |  |  |  | 1,425 |
Debt Securities Issued by Corporations |  |  | — |  |  |  | 661,146 |  |  |  | — |  |  |  | 661,146 |
Mortgage-Backed Securities: |  |  |  |  |  |  |  |  |  |  |  |
Residential - Government Agencies |  |  | — |  |  |  | 602,276 |  |  |  | — |  |  |  | 602,276 |
Residential - U.S. Government-Sponsored Enterprises |  |  | — |  |  |  | 684,573 |  |  |  | — |  |  |  | 684,573 |
Commercial - Government Agencies |  |  | — |  |  |  | 132,868 |  |  |  | — |  |  |  | 132,868 |
Total Mortgage-Backed Securities |  |  | — |  |  |  | 1,419,717 |  |  |  | — |  |  |  | 1,419,717 |
Total Investment Securities Available-for-Sale |  |  | 145,889 |  |  |  | 2,206,162 |  |  |  | — |  |  |  | 2,352,051 |
Loans Held for Sale |  |  | — |  |  |  | 2,182 |  |  |  | — |  |  |  | 2,182 |
Mortgage Servicing Rights |  |  | — |  |  |  | — |  |  |  | 674 |  |  |  | 674 |
Other Assets |  |  | 15,362 |  |  |  | — |  |  |  | — |  |  |  | 15,362 |
Derivatives 1 |  |  | — |  |  |  | 153,043 |  |  |  | 117 |  |  |  | 153,160 |
Total Assets Measured at Fair Value on a Recurring Basis as of March 31, 2024 |  | $ | 161,251 |  |  | $ | 2,361,387 |  |  | $ | 791 |  |  | $ | 2,523,429 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Derivatives 1 |  | $ | — |  |  | $ | 162,364 |  |  | $ | 2 |  |  | $ | 162,366 |
Total Liabilities Measured at Fair Value on a Recurring Basis as of March 31, 2024 |  | $ | — |  |  | $ | 162,364 |  |  | $ | 2 |  |  | $ | 162,366 |
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Investment Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Debt Securities Issued by the U.S. Treasury and Government Agencies |  | $ | 146,214 |  |  | $ | 66,359 |  |  | $ | — |  |  | $ | 212,573 |
Debt Securities Issued by States and Political Subdivisions |  |  | — |  |  |  | 63,806 |  |  |  | — |  |  |  | 63,806 |
Debt Securities Issued by U.S. Government-Sponsored Enterprises |  |  | — |  |  |  | 1,476 |  |  |  | — |  |  |  | 1,476 |
Debt Securities Issued by Corporations |  |  | — |  |  |  | 657,701 |  |  |  | — |  |  |  | 657,701 |
Mortgage-Backed Securities: |  |  |  |  |  |  |  |  |  |  |  |
Residential - Government Agencies |  |  | — |  |  |  | 629,327 |  |  |  | — |  |  |  | 629,327 |
Residential - U.S. Government-Sponsored Enterprises |  |  | — |  |  |  | 709,127 |  |  |  | — |  |  |  | 709,127 |
Commercial - Government Agencies or Sponsored Agencies |  |  | — |  |  |  | 134,923 |  |  |  | — |  |  |  | 134,923 |
Total Mortgage-Backed Securities |  |  | — |  |  |  | 1,473,377 |  |  |  | — |  |  |  | 1,473,377 |
Total Investment Securities Available-for-Sale |  |  | 146,214 |  |  |  | 2,262,719 |  |  |  | — |  |  |  | 2,408,933 |
Loans Held for Sale |  |  | — |  |  |  | 3,124 |  |  |  | — |  |  |  | 3,124 |
Mortgage Servicing Rights |  |  | — |  |  |  | — |  |  |  | 678 |  |  |  | 678 |
Other Assets |  |  | 13,448 |  |  |  | — |  |  |  | — |  |  |  | 13,448 |
Derivatives 1 |  |  | — |  |  |  | 94,921 |  |  |  | 148 |  |  |  | 95,069 |
Total Assets Measured at Fair Value on a Recurring Basis as of December 31, 2023 |  | $ | 159,662 |  |  | $ | 2,360,764 |  |  | $ | 826 |  |  | $ | 2,521,252 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Derivatives 1 |  | $ | — |  |  | $ | 143,857 |  |  | $ | — |  |  | $ | 143,857 |
Total Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2023 |  | $ | — |  |  | $ | 143,857 |  |  | $ | — |  |  | $ | 143,857 |
1 The fair value of each class of derivatives is shown in Note 11 Derivative Financial Instruments. For the three months ended March 31, 2024, and March 31, 2023, the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows:
(dollars in thousands) |  | Mortgage Servicing Rights 1 |  |  | Net Derivative Assets and Liabilities 2 |
Three Months Ended March 31, 2024 |  |  |  |  |  |
Balance as of January 1, 2024 |  | $ | 678 |  |  | $ | 148 |
Realized and Unrealized Net Gains (Losses): |  |  |  |  |  |
Included in Net Income |  |  | (4 | ) |  |  | 123 |
Transfers to Loans Held for Sale |  |  | — |  |  |  | (156 | )
Variation Margin Payments |  |  | — |  |  |  | — |
Balance as of March 31, 2024 |  | $ | 674 |  |  | $ | 115 |
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of March 31, 2024 |  | $ | — |  |  | $ | 123 |
Three Months Ended March 31, 2023 |  |  |  |  |  |
Balance as of January 1, 2023 |  | $ | 717 |  |  | $ | (122,071 | )
Realized and Unrealized Net Gains (Losses): |  |  |  |  |  |
Included in Net Income |  |  | (10 | ) |  |  | 336 |
Transfers to Loans Held for Sale |  |  | — |  |  |  | (236 | )
Variation Margin Payments |  |  | — |  |  |  | 69,133 |
Balance as of March 31, 2023 |  | $ | 707 |  |  | $ | (52,838 | )
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of March 31, 2023 |  | $ | — |  |  | $ | 188 |
1 Realized and unrealized gains and losses related to mortgage servicing rights are reported as a component of mortgage banking income in the Company’s consolidated statements of income. 2 Realized and unrealized gains and losses related to interest rate lock commitments are reported as a component of mortgage banking income in the Company’s consolidated statements of income. Realized and unrealized gains and losses related to interest rate swap agreements not designated as hedging instruments are reported as a component of other noninterest income and interest rate swap agreements designated as hedging instruments are reported in interest income in the Company’s consolidated statements of income. For Level 3 assets and liabilities measured at fair value on a recurring or nonrecurring basis as of March 31, 2024, and December 31, 2023, the significant unobservable inputs used in the fair value measurements were as follows:
(dollars in thousands) |  | Valuation Technique |  | Description |  | Range |  |  | Weighted Average 1 |  |  | Fair Value |
March 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage Servicing Rights |  | Discounted Cash Flow |  | Constant Prepayment Rate |  |  | 3.00 | % | - |  | 20.73 | % |  |  | 4.12 | % |  | $ | 26,323 |
|  |  |  | Discount Rate |  |  | 8.06 | % | - |  | 10.93 | % |  |  | 9.81 | % |  |  |
Net Derivative Assets and Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
| Interest Rate Lock Commitments |  | Pricing Model |  | Closing Ratio |  |  | 89.10 | % | - |  | 99.00 | % |  |  | 93.82 | % |  | $ | 115 |
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage Servicing Rights |  | Discounted Cash Flow |  | Constant Prepayment Rate |  |  | 2.98 | % | - |  | 21.18 | % |  |  | 4.06 | % |  | $ | 26,851 |
|  |  |  | Discount Rate |  |  | 7.65 | % | - |  | 10.79 | % |  |  | 9.48 | % |  |  |
Net Derivative Assets and Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
| Interest Rate Lock Commitments |  | Pricing Model |  | Closing Ratio |  |  | 83.50 | % | - |  | 99.00 | % |  |  | 85.53 | % |  | $ | 148 |
1 Unobservable inputs for mortgage servicing rights and interest rate lock commitments were weighted by loan amount. Significant increases (decreases) in any of those inputs in isolation could result in a significantly lower (higher) fair value measurement. Although the constant prepayment rate and the discount rate are not directly interrelated, they generally move in opposite directions of each other. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis The Company may be required periodically to measure certain assets and liabilities at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower-of-cost-or-fair value accounting or impairment write-downs of individual assets. The following table represents the assets measured at fair value on a nonrecurring basis as of March 31, 2024, and December 31, 2023.
(dollars in thousands) |  | Fair Value Hierarchy |  | Net Carrying Amount |  |  | Valuation Allowance |
March 31, 2024 |  |  |  |  |  |  |  |
Mortgage Servicing Rights - amortization method |  | Level 3 |  | $ | 19,748 |  |  | $ | — |
December 31, 2023 |  |  |  |  |  |  |  |
Mortgage Servicing Rights - amortization method |  | Level 3 |  | $ | 20,201 |  |  | $ | — |
As previously mentioned, all of the Company's mortgage servicing rights are classified as Level 3 measurements due to the use of significant unobservable inputs, as well as significant management judgment and estimation. Fair Value Option The following table reflects the difference between the aggregate fair value and the aggregate unpaid principal balance of the Company’s residential mortgage loans held for sale as of March 31, 2024, and December 31, 2023.
(dollars in thousands) |  | Aggregate Fair Value |  |  | Aggregate Unpaid Principal |  |  | Aggregate Fair Value Less Aggregate Unpaid Principal |
March 31, 2024 |  |  |  |  |  |  |  |  |
Loans Held for Sale |  | $ | 2,182 |  |  | $ | 2,167 |  |  | $ | 15 |
December 31, 2023 |  |  |  |  |  |  |  |  |
Loans Held for Sale |  | $ | 3,124 |  |  | $ | 3,051 |  |  | $ | 73 |
Changes in the estimated fair value of residential mortgage loans held for sale are reported as a component of mortgage banking income in the Company’s consolidated statements of income. For the three months ended March 31, 2024, and year ended December 31, 2023, the net gains or losses from the change in fair value of the Company’s residential mortgage loans held for sale were not material. Financial Instruments Not Recorded at Fair Value on a Recurring Basis The following presents the carrying amount, fair value, and placement in the fair value hierarchy of the Company’s financial instruments not recorded at fair value on a recurring basis as of March 31, 2024, and December 31, 2023. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For non-marketable equity securities such as Federal Home Loan Bank of Des Moines and Federal Reserve Bank stock, the carrying amount is a reasonable estimate of fair value as these securities can only be redeemed or sold at their par value and only to the respective issuing government supported institution or to another member institution. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity.
|  |  |  |  |  |  |  | Fair Value Measurements |
|  | Carrying |  |  |  |  |  | Quoted Prices in Active Markets for Identical Assets or Liabilities |  |  | Significant Other Observable Inputs |  |  | Significant Unobservable Inputs |
(dollars in thousands) |  | Amount |  |  | Fair Value |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
March 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial Instruments - Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment Securities Held-to-Maturity |  | $ | 4,913,457 |  |  | $ | 4,104,622 |  |  | $ | 115,118 |  |  | $ | 3,989,504 |  |  | $ | — |
Loans |  |  | 13,586,807 |  |  |  | 12,639,643 |  |  |  | — |  |  |  | — |  |  |  | 12,639,643 |
Financial Instruments - Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Time Deposits |  |  | 3,079,187 |  |  |  | 3,060,493 |  |  |  | — |  |  |  | 3,060,493 |  |  |  | — |
Securities Sold Under Agreements to Repurchase |  |  | 150,490 |  |  |  | 152,830 |  |  |  | — |  |  |  | 152,830 |  |  |  | — |
Other Debt 1 |  |  | 550,000 |  |  |  | 545,546 |  |  |  | — |  |  |  | 545,546 |  |  |  | — |
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial Instruments – Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment Securities Held-to-Maturity |  | $ | 4,997,335 |  |  | $ | 4,253,637 |  |  | $ | 116,531 |  |  | $ | 4,137,106 |  |  | $ | — |
Loans |  |  | 13,698,701 |  |  |  | 12,872,260 |  |  |  | — |  |  |  | — |  |  |  | 12,872,260 |
Financial Instruments – Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Time Deposits |  |  | 3,057,302 |  |  |  | 3,043,258 |  |  |  | — |  |  |  | 3,043,258 |  |  |  | — |
Securities Sold Under Agreements to Repurchase |  |  | 150,490 |  |  |  | 155,461 |  |  |  | — |  |  |  | 155,461 |  |  |  | — |
Other Debt 1 |  |  | 550,000 |  |  |  | 541,466 |  |  |  | — |  |  |  | 541,466 |  |  |  | — |
1 Excludes finance lease obligations.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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