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Fair Value of Financial Instruments and Fair Value Measurements (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Trading securities | $ 65,340 | $ 83,938
Short-term investments | 30,887 | 49,582
Long-term restricted investments | 34,453 | 34,356
Quoted Prices in Active Markets (Level 1) |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Trading securities | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Trading securities | 65,340 | 83,938
Significant Unobservable Inputs (Level 3) |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Trading securities | $ 0 | $ 0

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