v3.26.1
Transactions with Related Parties - Summary of Amounts Receivable From and Payable to PFSI (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Related Party Transaction [Line Items]    
Allocated expenses and costs $ 5,583 $ 3,161
PennyMac Financial Services, Inc. [Member]    
Related Party Transaction [Line Items]    
Loan servicing fees 6,536 6,669
Management fees 6,810 6,856
Aggregation and securitization costs 0 436
Due from PFSI-Miscellaneous receivables 17,456 19,100
Total expense due to affiliate $ 18,929 $ 17,122