v3.26.3
Related Party Transactions - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Jul. 26, 2023
Feb. 22, 2021
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Feb. 27, 2026
Dec. 31, 2025
Feb. 28, 2025
Related Party Transaction [Line Items]                  
Issuance of common stock, net of expenses         $ 639,804,000 $ 874,195,000      
Common stock repurchased (in shares)         0        
Common stock repurchased         $ (7,162,000) $ (19,947,000)      
2023 Common stock ATM Sales Agreement                  
Related Party Transaction [Line Items]                  
Number of shares issued in transaction (in shares) 15,000,000                
Common Stock                  
Related Party Transaction [Line Items]                  
Common stock repurchased (in shares)     (364,000) (684,000) (489,000) (1,351,000)      
Affiliated Entity                  
Related Party Transaction [Line Items]                  
Period of written notice of termination (in days)         180 days        
Related Party | BUCKLER Securities, LLC                  
Related Party Transaction [Line Items]                  
Percentage of voting interests acquired     10.80%   10.80%        
Equity method investments, value     $ 791,000   $ 791,000     $ 583,000  
Proceeds from divestiture of interest in joint venture     0   20,000        
Other receivables             $ 275,000,000   $ 50,000,000
Payments of stock issuance costs     $ 38,000   $ 53,000        
Common stock repurchased (in shares)     (364,000)   (489,000)        
Common stock repurchased     $ (5,149,000)   $ (7,162,000)        
Related Party | BUCKLER Securities, LLC | 2023 Common stock ATM Sales Agreement                  
Related Party Transaction [Line Items]                  
Payments of stock issuance costs     $ 1,556,000   $ 4,650,000        
Related Party | BUCKLER Securities, LLC | Common Stock | 2023 Common stock ATM Sales Agreement                  
Related Party Transaction [Line Items]                  
Number of shares issued in transaction (in shares)     12,366,000   35,451,000        
Issuance of common stock, net of expenses     $ 205,886,000   $ 615,278,000        
Armour Management Agreement | Affiliated Entity                  
Related Party Transaction [Line Items]                  
Automatic renewal period of management agreement (in years)         5 years        
Less management fees waived                  
Related Party Transaction [Line Items]                  
Amounts of transaction     0 $ (1,650,000) $ 0 $ (4,950,000)      
Other Expenses Reimbursed | Affiliated Entity                  
Related Party Transaction [Line Items]                  
Amounts of transaction     $ 500,000 $ 350,000 $ 1,434,000 $ 2,021,000      
Uncommitted Revolving Credit Facility and Security Agreement                  
Related Party Transaction [Line Items]                  
Maximum lending capacity   $ 50,000,000              
Uncommitted Revolving Credit Facility and Security Agreement | Related Party                  
Related Party Transaction [Line Items]                  
Basis spread (as percent)   2.00%