Annual report pursuant to Section 13 and 15(d)

Derivative Instruments and Hedging Activities - Interest Rate Swaptions (Details)

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Derivative Instruments and Hedging Activities - Interest Rate Swaptions (Details) - Variable Income Interest Rate - Less Than Six Months Remaining Maturity - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Swaptions, net | Purchase contracts    
Derivative [Line Items]    
Cost   $ 480,000
Fair Value   $ 22,000
Weighted Average Months to Expiration 0 months 2 months 12 days
Swaptions, net | Sale contracts    
Derivative [Line Items]    
Cost   $ 332,000
Fair Value   $ 3,000
Weighted Average Months to Expiration 0 months 2 months 12 days
Underlying Swap | Purchase contracts    
Derivative [Line Items]    
Notional   $ 200,000,000
Average Fixed Rate   5.13%
Weighted Average Months to Expiration   1 year
Underlying Swap | Sale contracts    
Derivative [Line Items]    
Notional   $ 400,000,000
Average Fixed Rate   5.61%
Weighted Average Months to Expiration   1 year