v3.26.1
Fair Value - Schedule of Reconciliation of the Fair Value of Investments (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Dec. 31, 2025
Schedule of Reconciliation of the Fair Value of Investments [Line Items]      
Balance at beginning [1] $ 235.4 $ 251.7 $ 260.9
Net realized losses included in earnings [1] (5.2) (36.0) (16.8)
Net unrealized appreciation included in earnings [1] 4.1 5.1 (24.3)
Accretion of discounts [1] 1.1 2.1 2.9
Purchases [1] 19.9 35.7 92.1
Repayments and sales [1] (0.5) (0.9) (58.4)
Transfers between asset classes [1]  
Reductions to CLO equity cost value [1] (2.8) (6.7) (7.7) [2]
PIK income [1] 0.9 1.7 3.2
Transfers in and/or (out) of level 3 [1]
Balance at ending [1] 252.8 252.8 251.7
Net change in unrealized (depreciation)/appreciation on Level 3 investments still held [1] (1.1) (27.6) (43.4)
Senior Secured Notes [Member]      
Schedule of Reconciliation of the Fair Value of Investments [Line Items]      
Balance at beginning 150.8 147.3 [1] 150.7
Net realized losses included in earnings (5.2) (17.8) (14.4)
Net unrealized appreciation included in earnings 1.4 3.5 5.0
Accretion of discounts 1.1 2.1 2.9
Purchases 12.8 57.9
Repayments and sales (0.5) (0.9) (57.9)
Transfers between asset classes (1.2) (1.2)  
Reductions to CLO equity cost value [2]
PIK income 0.8 1.5 3.2
Transfers in and/or (out) of level 3
Balance at ending [1] 147.2 147.2 147.3
Net change in unrealized (depreciation)/appreciation on Level 3 investments still held (3.8) (11.1) (11.3)
Equity and Other Investments [Member]      
Schedule of Reconciliation of the Fair Value of Investments [Line Items]      
Balance at beginning 12.4 9.4 [1] 5.6
Net realized losses included in earnings 0.4
Net unrealized appreciation included in earnings 1.7 1.5 (0.2)
Accretion of discounts
Purchases 3.0 4.0
Repayments and sales (0.5)
Transfers between asset classes 1.2 1.2  
Reductions to CLO equity cost value [2]
PIK income 0.1 0.2
Transfers in and/or (out) of level 3
Balance at ending [1] 15.4 15.4 9.4
Net change in unrealized (depreciation)/appreciation on Level 3 investments still held 1.7 1.6 (0.1)
CLO Equity [Member]      
Schedule of Reconciliation of the Fair Value of Investments [Line Items]      
Balance at beginning 72.2 95.1 [1] 104.6
Net realized losses included in earnings (18.2) (2.8)
Net unrealized appreciation included in earnings 1.0 0.2 (29.1)
Accretion of discounts
Purchases 19.9 19.9 30.2
Repayments and sales
Transfers between asset classes  
Reductions to CLO equity cost value (2.8) (6.7) (7.7) [2]
PIK income
Transfers in and/or (out) of level 3
Balance at ending [1] 90.3 90.3 95.1
Net change in unrealized (depreciation)/appreciation on Level 3 investments still held $ 1.0 $ (18.0) $ (32.0)
[1] Totals may not sum due to rounding.
[2] Reduction to CLO equity cost value of approximately $7.7 million represented the distributions received, or entitled to be received, on the Company’s investments held in CLO equity subordinated and income notes of approximately $24.1 million, plus the amortization of cost of the Company’s CLO fee notes of approximately $57,000, less the effective yield interest income recognized on the Company’s CLO equity subordinated and income notes of approximately $16.5 million.