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Fair value measurements | 3 Months Ended
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Mar. 31, 2024
Fair Value Disclosures [Abstract] |
Fair value measurements | Fair value measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. The fair value ASC establishes a hierarchy for grouping assets and liabilities, based on the significance of inputs. The estimated fair values of the Company's assets and liabilities measured on a recurring basis are determined using the market approach. The Company measures its investments in certain fixed-income and equity securities at fair value with changes in fair value recognized in income. The Company anticipates using these investments, which consist of insurance contracts, to satisfy its obligations under its unfunded, nonqualified defined benefit and defined contribution plans for executive officers and certain key management employees and invests in these fixed-income and equity securities for the purpose of earning investment returns and capital appreciation. These investments, which totaled $62.7 million, $83.5 million and $66.2 million, at March 31, 2024 and 2023, and December 31, 2023, respectively, are classified as investments on the Consolidated Balance Sheets. The net unrealized gain on these investments was $2.9 million for both the three months ended March 31, 2024 and 2023. The change in fair value, which is considered part of the cost of the plan, is classified in other income on the Consolidated Statements of Income. In the first quarter of 2024 and the fourth quarter of 2023 the Company withdrew $9.0 million and $20.0 million, respectively, of its cost basis, which reduced investments on the Consolidated Balance Sheets. The Company did not elect the fair value option, which records gains and losses in income, for its available-for-sale securities, which include mortgage-backed securities and U.S. Treasury securities. These available-for-sale securities are recorded at fair value and are classified as investments on the Consolidated Balance Sheets. Unrealized gains or losses are recorded in accumulated other comprehensive loss. Details of available-for-sale securities were as follows:
March 31, 2024 | Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
| (In thousands)
Mortgage-backed securities | $ | 8,072 |  | $ | 4 |  | $ | 507 |  | $ | 7,569 |
U.S. Treasury securities | 3,756 |  | 35 |  | 2 |  | 3,789 |
Total | $ | 11,828 |  | $ | 39 |  | $ | 509 |  | $ | 11,358 |
March 31, 2023 | Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
| (In thousands)
Mortgage-backed securities | $ | 8,557 |  | $ | 3 |  | $ | 561 |  | $ | 7,999 |
U.S. Treasury securities | 3,023 |  | 8 |  | 51 |  | 2,980 |
Total | $ | 11,580 |  | $ | 11 |  | $ | 612 |  | $ | 10,979 |
December 31, 2023 | Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
| (In thousands)
Mortgage-backed securities | $ | 8,234 |  | $ | 17 |  | $ | 470 |  | $ | 7,781 |
U.S. Treasury securities | 3,521 |  | 28 |  | 8 |  | 3,541 |
Total | $ | 11,755 |  | $ | 45 |  | $ | 478 |  | $ | 11,322 |
The Company's assets measured at fair value on a recurring basis were as follows:
| Fair Value Measurements at March 31, 2024, Using |
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Significant Other Observable Inputs (Level 2) | Significant Unobservable Inputs (Level 3) | Balance at March 31, 2024
| (In thousands)
Assets: |  |  |  |
Money market funds | $ | — |  | $ | 6,985 |  | — |  | $ | 6,985 |
Insurance contracts* | — |  | 62,713 |  | — |  | 62,713 |
Available-for-sale securities: |  |  |  |
Mortgage-backed securities | — |  | 7,569 |  | — |  | 7,569 |
U.S. Treasury securities | — |  | 3,789 |  | — |  | 3,789 |
Total assets measured at fair value | $ | — |  | $ | 81,056 |  | $ | — |  | $ | 81,056 |
* The insurance contracts invest approximately 57 percent in fixed-income investments, 17 percent in common stock of large-cap companies, 10 percent in target date investments, 8 percent in common stock of mid-cap companies, 4 percent in common stock of small-cap companies, 3 percent in cash equivalents, and 1 percent in international investments.
| Fair Value Measurements at March 31, 2023, Using |
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Significant Other Observable Inputs (Level 2) | Significant Unobservable Inputs (Level 3) | Balance at March 31, 2023
| (In thousands)
Assets: |  |  |  |
Money market funds | $ | — |  | $ | 5,447 |  | $ | — |  | $ | 5,447 |
Insurance contracts* | — |  | 83,460 |  | — |  | 83,460 |
Available-for-sale securities: |  |  |  |
Mortgage-backed securities | — |  | 7,999 |  | — |  | 7,999 |
U.S. Treasury securities | — |  | 2,980 |  | — |  | 2,980 |
Total assets measured at fair value | $ | — |  | $ | 99,886 |  | $ | — |  | $ | 99,886 |
* The insurance contracts invest approximately 61 percent in fixed-income investments, 15 percent in common stock of large-cap companies, 8 percent in common stock of mid-cap companies, 7 in target date investments, 6 percent in common stock of small-cap companies, 2 percent in cash equivalents and 1 percent in international investments.
| Fair Value Measurements at December 31, 2023, Using |
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Significant Other Observable Inputs (Level 2) | Significant Unobservable Inputs (Level 3) | Balance at December 31, 2023
| (In thousands)
Assets: |  |  |  |
Money market funds | $ | — |  | $ | 6,409 |  | $ | — |  | $ | 6,409 |
Insurance contracts* | — |  | 66,283 |  | — |  | 66,283 |
Available-for-sale securities: |  |  |  |
Mortgage-backed securities | — |  | 7,781 |  | — |  | 7,781 |
U.S. Treasury securities | — |  | 3,541 |  | — |  | 3,541 |
Total assets measured at fair value | $ | — |  | $ | 84,014 |  | $ | — |  | $ | 84,014 |
* The insurance contracts invest approximately 60 percent in fixed-income investments, 15 percent in common stock of large-cap companies, 8 percent in target date investments, 7 percent in common stock of mid-cap companies, 5 percent in common stock of small-cap companies, 3 percent in cash equivalents, 1 percent in high yield investments and 1 percent in international investments.
The Company's money market funds are valued at the net asset value of shares held at the end of the period, based on published market quotations on active markets, or using other known sources including pricing from outside sources. The estimated fair value of the Company's mortgage-backed securities and U.S. Treasury securities are based on comparable market transactions, other observable inputs or other sources, including pricing from outside sources. The estimated fair value of the Company's insurance contracts are based on contractual cash surrender values that are determined primarily by investments in managed separate accounts of the insurer. These amounts approximate fair value. The managed separate accounts are valued based on other observable inputs or corroborated market data. Though the Company believes the methods used to estimate fair value are consistent with those used by other market participants, the use of other methods or assumptions could result in a different estimate of fair value. The Company applies the provisions of the fair value measurement standard to its nonrecurring, non-financial measurements, including long-lived asset impairments. These assets are not measured at fair value on an ongoing basis but are subject to fair value adjustments only in certain circumstances. The Company reviews the carrying value of its long-lived assets, excluding goodwill, whenever events or changes in circumstances indicate that such carrying amounts may not be recoverable. The Company's long-term debt is not measured at fair value on the Consolidated Balance Sheets and the fair value is being provided for disclosure purposes only. The fair value was categorized as Level 2 in the fair value hierarchy and was based on discounted future cash flows using current market interest rates. The estimated fair value of the Company's Level 2 long-term debt was as follows:
| March 31, 2024 | March 31, 2023 | December 31, 2023
| (In thousands)
Carrying amount | $ | 2,386,397 |  | $ | 2,239,718 |  | $ | 2,298,223 |
Fair value | $ | 2,098,002 |  | $ | 1,974,344 |  | $ | 2,046,039 |
The carrying amounts of the Company's remaining financial instruments included in current assets and current liabilities approximate their fair values.

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- References No definition available. + Details
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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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