v3.26.3
Stockholders' Equity - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Oct. 15, 2026
USD ($)
$ / shares
Jul. 15, 2026
USD ($)
$ / shares
Apr. 15, 2026
USD ($)
$ / shares
Jan. 15, 2026
USD ($)
$ / shares
Oct. 30, 2025
USD ($)
$ / shares
Jul. 30, 2025
USD ($)
$ / shares
Apr. 30, 2025
USD ($)
$ / shares
Apr. 24, 2025
USD ($)
$ / shares
Jan. 30, 2025
USD ($)
$ / shares
Sep. 05, 2024
Nov. 20, 2019
$ / shares
Mar. 13, 2018
Jun. 28, 2017
Sep. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
shares
Dec. 31, 2025
USD ($)
shares
Stockholders Equity [Line Items]                                    
Distribution Expense, Preferred Shareholders                           $ 9,714 $ 9,715 $ 29,143 $ 27,863  
Accrued Distribution Preferred Shareholders                           $ 5,148 5,148 $ 5,148 5,148  
Trust shares, authorized (shares) | shares                           500,000,000   500,000,000   500,000,000
Proceeds from Issuance of Common Stock                               $ 0 (59)  
Preferred Stock, Shares Authorized | shares                           50,000,000   50,000,000   50,000,000
Preferred Stock, Shares Issued | shares                           20,109,000   20,109,000    
Proceeds from Issuance of Preferred Stock and Preference Stock                               $ 0 58,998  
Stock Issued During Period, Value, New Issues                                 59  
Preferred Stock, Redemption Price Per Share | $ / shares                     $ 25.00     $ 25.00   $ 25.00    
Distribution declared per share | $ / shares               $ 0.25                    
Distributions paid               $ 18,809               $ 0 37,618  
Net Income Loss Available To Trust Stock Net of Distributions                           $ 6,247 $ (88,355) $ 35,511 $ (190,562)  
Document Period End Date                               Sep. 30, 2026    
At the market equity offering - Preferred                                    
Stockholders Equity [Line Items]                                    
Stock Issued During Period, Shares, New Issues | shares                                 2,611,184  
Proceeds from Issuance or Sale of Equity                                 $ 59,008  
At the market offering costs                                 100  
Payments for Commissions                                 1,206  
Common Stock [Member]                                    
Stockholders Equity [Line Items]                                    
Distribution To Shareholders                                 $ 37,618  
Preferred Class B [Member]                                    
Stockholders Equity [Line Items]                                    
Distribution To Shareholders   $ 3,703 $ 3,703 $ 3,703 $ 3,703 $ 3,703 $ 3,703   $ 3,048                  
Preferred Class B [Member] | At the market equity offering - Preferred                                    
Stockholders Equity [Line Items]                                    
Stock Issued During Period, Shares, New Issues | shares                                 1,331,522  
Proceeds from Issuance or Sale of Equity                                 $ 29,869  
Payments for Commissions                                 $ 611  
Series B Preferred Stock [Member]                                    
Stockholders Equity [Line Items]                                    
Accrued Distribution Preferred Shareholders                               $ 2,500    
Preferred Stock, Dividend Rate, Percentage                   7.875%   7.875%            
Preferred Stock, Shares Issued | shares                           7,524,000   7,524,000    
Issuance of Trust preferred shares, net of offering costs                           $ 177,771   $ 177,771   $ 177,771
Preferred Stock, Dividend Rate, Spread                       0.04985            
Series A Preferred Stock                                    
Stockholders Equity [Line Items]                                    
Preferred Stock, Dividend Rate, Percentage                   7.25%     7.25%          
Preferred Stock, Shares Issued | shares                           4,678,000   4,678,000    
Issuance of Trust preferred shares, net of offering costs                           $ 112,010   $ 112,010   112,010
Preferred Stock, Cash Distributions Paid, Per Share | $ / shares   $ 453.125000 $ 453.125000 $ 453.125000 $ 453.125000 $ 453.125000 $ 453.125000   $ 453.125000                  
Preferred Class A [Member]                                    
Stockholders Equity [Line Items]                                    
Distribution To Shareholders   $ 2,120 $ 2,120 $ 2,120 $ 2,120 $ 2,120 $ 2,120   $ 2,062                  
Preferred Class A [Member] | At the market equity offering - Preferred                                    
Stockholders Equity [Line Items]                                    
Stock Issued During Period, Shares, New Issues | shares                                 127,078  
Proceeds from Issuance or Sale of Equity                                 $ 2,854  
Payments for Commissions                                 $ 58  
Series B [Member]                                    
Stockholders Equity [Line Items]                                    
Preferred Stock, Cash Distributions Paid, Per Share | $ / shares   $ 0.4921875 $ 0.4921875 $ 0.4921875 $ 492.1875000 $ 492.1875000 $ 492.1875000   $ 492.1875000                  
Series C Preferred Stock [Member]                                    
Stockholders Equity [Line Items]                                    
Accrued Distribution Preferred Shareholders                               $ 2,600    
Preferred Stock, Dividend Rate, Percentage                   7.875% 7.875%              
Preferred Stock, Shares Issued | shares                           7,907,000   7,907,000    
Issuance of Trust preferred shares, net of offering costs                           $ 188,049   $ 188,049   $ 188,049
Preferred Stock, Cash Distributions Paid, Per Share | $ / shares   $ 492.1875000 $ 492.1875000 $ 492.1875000 $ 492.1875000 $ 492.1875000 $ 492.1875000   $ 492.1875000                  
Distribution To Shareholders   $ 3,892 $ 3,892 $ 3,892 $ 3,892 $ 3,892 $ 3,892   $ 3,324                  
Series C Preferred Stock [Member] | At the market equity offering - Preferred                                    
Stockholders Equity [Line Items]                                    
Stock Issued During Period, Shares, New Issues | shares                                 1,152,584  
Proceeds from Issuance or Sale of Equity                                 $ 26,285  
Payments for Commissions                                 537  
Subsequent Event | Preferred Class B [Member]                                    
Stockholders Equity [Line Items]                                    
Distribution To Shareholders $ 3,703                                  
Subsequent Event | Series A Preferred Stock                                    
Stockholders Equity [Line Items]                                    
Preferred Stock, Cash Distributions Paid, Per Share | $ / shares $ 453.125000                                  
Subsequent Event | Preferred Class A [Member]                                    
Stockholders Equity [Line Items]                                    
Distribution To Shareholders $ 2,120                                  
Subsequent Event | Series B [Member]                                    
Stockholders Equity [Line Items]                                    
Preferred Stock, Cash Distributions Paid, Per Share | $ / shares $ 0.4921875                                  
Subsequent Event | Series C Preferred Stock [Member]                                    
Stockholders Equity [Line Items]                                    
Preferred Stock, Cash Distributions Paid, Per Share | $ / shares $ 492.1875000                                  
Distribution To Shareholders $ 3,892                                  
Retained Earnings [Member] | Common Stock [Member]                                    
Stockholders Equity [Line Items]                                    
Distribution To Shareholders                                 37,618  
Common Stock [Member]                                    
Stockholders Equity [Line Items]                                    
Stock Issued During Period, Value, New Issues                                 $ 59