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| Debt Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt | Debt The following table summarizes the components of debt as of June 30, 2026 and December 31, 2025:
Revolving Credit Facility In August 2023, we entered into a Second Amended and Restated Credit Agreement (as amended, the "Credit Agreement") to increase our revolving credit facility from $500.0 million to $600.0 million, extend the maturity date of our revolving credit facility from January 2, 2025 to August 23, 2028, and refinance and repay in full the remaining balance of the term loan then outstanding under our prior credit facility. On August 15, 2024, we entered into Amendment No. 1 to the Credit Agreement ("Amendment No. 1 to the Credit Agreement") to, among other things, (i) increase our revolving credit facility from $600.0 million to $700.0 million, (ii) collateralize the amended revolving credit facility with substantially all of our and our subsidiary guarantors' personal property (with certain exceptions), (iii) make the applicable margin for revolving borrowings, letters of credit and the commitment fee rate be based on our consolidated net leverage ratio (permitting up to $150.0 million of unrestricted cash to be netted from the calculation thereof), (iv) modify the margin for Secured Overnight Financing Rate ("SOFR")-based revolving borrowings and letters of credit to range from 1.25% to 2.50% per annum, (v) modify the margin for base rate revolving borrowings to range from 0.25% to 1.50%, (vi) modify the commitment fee that accrues on the unused portion of the revolving credit facility to range from 0.20% to 0.45%, and (vii) modify the maximum permitted leverage ratio to include a net debt concept (permitting up to $150.0 million of unrestricted cash to be netted from the calculation thereof), and to provide that such ratio shall be no greater than 4.00 to 1.00 during the first quarter of 2026, and for each fiscal quarter thereafter (however, this maximum permitted leverage ratio may be increased to 4.50 to 1.00 for up to four fiscal quarters if a material acquisition is entered into). These amendments became effective on October 1, 2024. The amended revolving credit facility's maturity date of August 23, 2028 remains unchanged. As of June 30, 2026, we had no outstanding loans borrowed under our revolving credit facility. The interest rates for revolving loans under the Credit Agreement are variable based on the daily simple or term SOFR, plus a 10-basis point credit spread adjustment, or an alternate base rate, in each case plus a margin for borrowing. A commitment fee accrues on the average daily unused portion of the revolving credit facility. The margin for revolving borrowings and commitment fee rate are determined based on the Company’s consolidated total net leverage ratio (as measured by a consolidated funded indebtedness, less the aggregate amount of unrestricted cash up to a maximum amount not to exceed $150.0 million, to consolidated EBITDA ratio). As of June 30, 2026, the margin for borrowing based on SOFR was set at 1.75% and the commitment fee rate was set at 0.30%. The revolving credit facility portion of the Credit Agreement requires the maintenance of certain ratios related to leverage and interest coverage. As of June 30, 2026, we were in compliance with all such financial covenants. Borrowings under the Credit Agreement are guaranteed by certain domestic subsidiaries of the Company. On October 1, 2024, we collateralized our obligations under the Credit Agreement with substantially all of our and our subsidiary guarantors' personal property (with certain exceptions). The carrying value of revolving borrowings under the Credit Agreement approximates fair value because the interest rate adjusts to the market interest rate (Level 3 input). See Note 3. "Fair Value Accounting." As of June 30, 2026, total unamortized debt issuance costs related to the prior and amended revolving credit facilities were $2.2 million. These costs are included in other assets on the Consolidated Balance Sheet and are amortized into interest expense over the term of the Credit Agreement. Term Loan Amendment No. 1 to the Credit Agreement provided for a secured term loan facility (the “2024 Term Loan”) in an aggregate principal amount of $700.0 million. The 2024 Term Loan was funded on October 1, 2024, of which $100.0 million was used to pay down the Company's revolving credit facility. The 2024 Term Loan required, among other things, (i) mandatory prepayments from excess cash flow on an annual basis, commencing with the fiscal year ending December 31, 2025, (ii) mandatory prepayments with proceeds of certain asset sales and debt issuances, and (iii) quarterly principal amortization payments in an amount equal to 0.25% of the 2024 Term Loan. The 2024 Term Loan had a maturity date of October 1, 2031. The interest rate for the 2024 Term Loan was based on SOFR plus 2.25% per year. The 2024 Term Loan was guaranteed by the same subsidiaries of the Company that guarantee our revolving credit facility, and the 2024 Term Loan was secured on a pari passu basis with our revolving credit facility. On June 17, 2025, we entered into Amendment No. 2 to the Credit Agreement to establish a new class of term loans (the "2025 Refinancing Term Loan") in an aggregate principal amount of $698.3 million. We used the 2025 Refinancing Term Loan's net proceeds, together with cash on hand, to satisfy the outstanding balance under the 2024 Term Loan. The interest rate for the 2025 Refinancing Term Loan is based on SOFR plus 2.00% per year, or an alternate base rate, plus 1.00% per year, a 0.25% per annum reduction from the 2024 Term Loan. The 2025 Refinancing Term Loan is prepayable at any time without premium or penalty (other than customary SOFR-related breakage costs). All other terms of the 2025 Refinancing Term Loan are the same as the 2024 Term Loan that was prepaid with the proceeds of the 2025 Refinancing Term Loan. In April 2026, the Company used $83.0 million of cash proceeds from the sale of the barge business to prepay a portion of the outstanding 2025 Refinancing Term Loan. See Note 2. "Acquisitions and Divestitures" for additional information. In connection with the issuance of the 2025 Refinancing Term Loan, the Company incurred $0.8 million of debt issuance costs. Senior Notes On August 26, 2024, the Company issued $600.0 million aggregate principal amount of 6.875% senior unsecured notes (the "2024 Notes") that mature in August 2032. Interest on the 2024 Notes is payable semiannually in February and August. In April 2021, the Company issued $400.0 million aggregate principal amount of 4.375% senior unsecured notes (the "2021 Notes", and together with the 2024 Notes, the "Senior Notes") that mature in April 2029. Interest on the 2021 Notes is payable semiannually in April and October. The Senior Notes are senior unsecured obligations of the Company and are guaranteed on a senior unsecured basis by each of the Company’s domestic subsidiaries that is a guarantor under our Credit Agreement. The terms of each indenture governing the Senior Notes, among other things, limit the ability of the Company and each of its subsidiaries to create liens on assets, enter into sale and leaseback transactions, and consolidate, merge or transfer all or substantially all of its assets and the assets of its subsidiaries. The terms of each indenture also limit the ability of the Company’s non-guarantor subsidiaries to incur certain types of debt. The Company has the option to redeem all or a portion of the Senior Notes at redemption prices set forth in the applicable indenture, plus accrued and unpaid interest to the redemption date. If a Change of Control Triggering Event (as defined in each applicable indenture) occurs, the Company must offer to repurchase the Senior Notes at a price equal to 101% of the principal amount of the Senior Notes, plus accrued and unpaid interest to the date of repurchase. The estimated fair values of the 2024 Notes and 2021 Notes as of June 30, 2026 were $626.7 million and $393.6 million, respectively, based on quoted market prices in a market with little activity (Level 2 input). The remaining principal payments under existing debt agreements as of June 30, 2026 are as follows:
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