v3.26.1
Investments - Consolidated Statements of Operations for PSSL (Details) - USD ($)
$ in Thousands
 3 Months Ended 7 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2025
Expenses:          
Interest expense on notes to members $ 25,029 $ 22,547   $ 76,321 $ 67,437
Administration fees 1,350 1,200   3,750 3,600
Total expenses 40,186 38,877   123,844 112,827
Realized and unrealized gain (loss) on investments:          
Net realized gain (loss) on Investments 37,383 (14,842)   31,304 8,355
Realized loss on debt extinguishment (0) 0   (1,380) 0
Net realized gain (loss) on:          
Net increase (decrease) in members' equity resulting from operations 7,576 19,298   32,735 48,852
PennantPark Senior Secured Loan Fund I LLC          
Investment income:          
Interest Income 28,236 28,212   86,395 84,989
Other income 476 357   1,000 1,145
Total investment income 28,712 28,569   87,395 86,134
Expenses:          
Interest and expenses on credit facility and asset-backed debt [1] 13,720 14,381   41,936 42,198
Interest expense on notes to members [1] 8,015 8,427   24,311 25,674
Administration fees [1] 785 1,001   2,338 2,386
General and administrative expenses [1] 385 110   1,481 1,016
Expenses before debt issuance costs [1] 22,905 23,919   70,066 71,274
Debt issuance costs [1] 0 200   0 200
Total expenses [1] 22,905 24,119   70,066 71,474
Net investment income [1] 5,807 4,450   17,329 14,660
Realized and unrealized gain (loss) on investments:          
Net realized gain (loss) on Investments (0) (10,974)   (16,540) (17,429)
Realized loss on debt extinguishment 0 (1,637)   0 (1,637)
Net change in unrealized appreciation (depreciation) on investments (8,565) 5,403   (18,843) (9,739)
Net realized and unrealized gain (loss) on investments and debt (8,565) (7,208)   (35,383) (28,805)
Net realized gain (loss) on:          
Net increase (decrease) in members' equity resulting from operations (2,758) $ (2,758)   $ (18,054) $ (14,145)
Pennant Park Senior Secured Loan Fund II L L C [Member]          
Investment income:          
Interest Income 7,639   $ 16,172    
Other income 201   226    
Total investment income 7,840   16,398    
Expenses:          
Interest and expenses on credit facility and asset-backed debt [2] 3,531   7,017    
Interest expense on notes to members [2] 2,580   5,598    
Administration fees [2] 213   507    
General and administrative expenses [2] 189   428    
Debt issuance costs [2] 0   33    
Total expenses [2] 6,513   13,550    
Net investment income [2] 1,327   2,815    
Realized and unrealized gain (loss) on investments:          
Net realized gain (loss) on Investments 0   0    
Net change in unrealized appreciation (depreciation) on investments (62)   (678)    
Net realized and unrealized gain (loss) on investments and debt (62)   (678)    
Net realized gain (loss) on:          
Net increase (decrease) in members' equity resulting from operations $ 1,265   $ 2,137    
[1] No management or incentive fees are payable by PSSL. If any fees were to be charged, they would be separately disclosed in the Consolidated Statement of Operations. PSSL pays the Administrator an annual fee of 0.25% of average gross assets under management on a quarterly basis.
[2] No management or incentive fees are payable by PSSL II. If any fees were to be charged, they would be separately disclosed in the Consolidated Statement of Operations. PSSL II pays the Administrator an annual fee of 0.25% of the total assets under management on a quarterly basis.