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Financial Instruments and Fair Values - Narrative (Details) - USD ($)
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Interest rate swap agreements liability $ 0   $ 85,000
Cash flow hedging | Designated as hedging instrument      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net gain to be reclassified into interest expense within the next 12 months 6,800,000    
Interest Rate Swap And Interest Rate Cap      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Interest rate swap agreements liability 0    
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]      
Interest rate swap agreements liability     100,000
Aggregate notional value 586,300,000   573,200,000
Interest rate swap agreement asset 16,700,000   $ 11,800,000
Net unrealized gains on valuation of interest rate swap agreements $ 5,900,000 $ (6,700,000)