v3.25.2
Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Accounting Policies [Line Items]          
Cash and cash equivalents $ 418,273   $ 418,273   $ 321,542
Notional amount 61,251   61,251    
Derivative liabilities 1,835   1,835   0
Posted cash collateral 1,380   1,380    
Derivative liabilities, net 455   455    
Deferred offering expenses amortization 133 $ 130 266 $ 250  
Deferred offering expenses 1,801   1,801   2,067
Series I [Member]          
Accounting Policies [Line Items]          
Cash and cash equivalents 123,709   123,709   84,681
Notional amount 18,188   18,188    
Derivative liabilities 520   520   0
Posted cash collateral 410   410    
Derivative liabilities, net 110   110    
Deferred offering expenses amortization 38 33 74 58  
Deferred offering expenses 535   $ 535   545
Series I [Member] | Minimum [Member]          
Accounting Policies [Line Items]          
Income tax years open to examination     3 years    
Series I [Member] | Maximum [Member]          
Accounting Policies [Line Items]          
Income tax years open to examination     5 years    
Series II [Member]          
Accounting Policies [Line Items]          
Cash and cash equivalents 294,564   $ 294,564   236,861
Notional amount 43,063   43,063    
Derivative liabilities 1,315   1,315   0
Posted cash collateral 970   970    
Derivative liabilities, net 345   345    
Deferred offering expenses amortization 95 $ 97 192 $ 192  
Deferred offering expenses $ 1,266   $ 1,266   $ 1,522
Series II [Member] | Minimum [Member]          
Accounting Policies [Line Items]          
Income tax years open to examination     3 years    
Series II [Member] | Maximum [Member]          
Accounting Policies [Line Items]          
Income tax years open to examination     5 years