Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Private Unsecured Notes (Details)

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Borrowings - Private Unsecured Notes (Details) - USD ($)
$ in Thousands
3 Months Ended
Jan. 30, 2024
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Sep. 14, 2023
Mar. 15, 2023
Nov. 14, 2022
Debt Instrument [Line Items]              
Carrying value   $ 1,409,316   $ 888,221      
Borrowings on debt   1,267,000 $ 1,470,143        
November 2025 notes | Senior notes              
Debt Instrument [Line Items]              
Maximum interest rate increase             2.00%
Maximum principal amount   170,000   170,000     $ 170,000
Applicable margin rate (as a percent)             8.37%
Company Receives             8.37%
Carrying value             $ 85,000
November 2025 notes | Senior notes | SOFR              
Debt Instrument [Line Items]              
Derivative basis spread on variable rate             4.08%
November 2027 notes | Senior notes              
Debt Instrument [Line Items]              
Maximum principal amount   155,000   155,000     $ 155,000
Applicable margin rate (as a percent)             8.43%
Company Receives             8.43%
Carrying value             $ 77,500
November 2027 notes | Senior notes | SOFR              
Debt Instrument [Line Items]              
Derivative basis spread on variable rate             4.42%
March 2026 notes | Senior notes              
Debt Instrument [Line Items]              
Maximum principal amount   276,000   276,000   $ 276,000  
Applicable margin rate (as a percent)           8.12%  
Company Receives           8.12%  
Carrying value           $ 276,000  
March 2026 notes | Senior notes | SOFR              
Debt Instrument [Line Items]              
Derivative basis spread on variable rate           3.761%  
March 2028 notes | Senior notes              
Debt Instrument [Line Items]              
Maximum principal amount   124,000   124,000   $ 124,000  
Applicable margin rate (as a percent)           8.17%  
Company Receives           8.18%  
Carrying value           $ 124,000  
March 2028 notes | Senior notes | SOFR              
Debt Instrument [Line Items]              
Derivative basis spread on variable rate           4.241%  
September 2027 notes | Senior notes              
Debt Instrument [Line Items]              
Maximum principal amount   75,000   75,000 $ 75,000    
Applicable margin rate (as a percent)         8.67%    
Company Receives         8.67%    
Carrying value         $ 75,000    
September 2027 notes | Senior notes | SOFR              
Debt Instrument [Line Items]              
Derivative basis spread on variable rate         4.3055%    
September 2028 notes | Senior notes              
Debt Instrument [Line Items]              
Maximum principal amount   250,000   $ 250,000 $ 250,000    
Applicable margin rate (as a percent)         8.80%    
Company Receives         8.80%    
Carrying value         $ 250,000    
September 2028 notes | Senior notes | SOFR              
Debt Instrument [Line Items]              
Derivative basis spread on variable rate         4.5365%    
January 2029 notes              
Debt Instrument [Line Items]              
Applicable margin rate (as a percent) 6.75%            
Proceeds from notes payable $ 550,000            
January 2029 notes | Interest rate swap              
Debt Instrument [Line Items]              
Interest rate, effective percentage 6.75%            
Borrowings on debt $ 550,000            
January 2029 notes | SOFR | Interest rate swap              
Debt Instrument [Line Items]              
Coupon 2.876%            
January 2029 notes | Senior notes              
Debt Instrument [Line Items]              
Maximum principal amount   $ 550,000