Financial Instruments - Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Restricted investments:
Rabbi Trusts	$ 4,431	$ 4,354
Marketable equity and fixed income securities	84,420	75,244
Quoted Prices in Active Markets (Level 1)
Restricted investments:
Marketable equity and fixed income securities	2,502	2,362
Significant Other Observable Inputs (Level 2)
Restricted investments:
Rabbi Trusts	4,431	4,354
Marketable equity and fixed income securities	81,918	72,882
Interest Rate Swap
Restricted investments:
Interest rate swap derivatives	3,828	3,473
Interest Rate Swap \| Significant Other Observable Inputs (Level 2)
Restricted investments:
Interest rate swap derivatives	$ 3,828	$ 3,473

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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+ Details