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Financial Instruments and Fair Values - Narrative (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2026 | Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Feb. 28, 2026 | Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Net unrealized gain (loss) |  | $ 4,861,000 | $ (1,956,000) | $ 9,342,000 | $ (7,121,000) |  |
Unrealized gain (loss) on valuation of interest rate swap agreements |  | 4,819,000 | $ (1,472,000) | 9,222,000 | $ (5,588,000) |  |
Cash Flow Hedging | Designated as Hedging Instrument |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Aggregate notional value |  | 566,023,000 |  | 566,023,000 |  |  |
Net gain to be reclassified into interest expense within the next 12 months |  |  |  | 2,300,000 |  |  |
Interest Rate Swap and Interest Rate Cap | Cash Flow Hedging | Designated as Hedging Instrument |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Aggregate notional value |  | $ 566,000,000.0 |  | $ 566,000,000.0 |  |  | $ 567,000,000.0
Treasury Lock |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Aggregate notional value |  |  |  |  |  | $ 50,000,000.0 |
Unrealized gain (loss) on valuation of interest rate swap agreements | $ 1,100,000 |  |  |  |  |  |

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