v3.26.1
Transactions with Related Parties - Summary of Expenses (Detail) - PNMAC Capital Management LLC [Member] - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Related Party Transaction [Line Items]        
Expenses incurred on the Company’s behalf, net $ 4,257 $ 4,963 $ 10,398 $ 9,564
Overhead 4,022 982 4,971 1,963
Compensation 1,599 1,628 3,198 3,257
Total expenses incurred in transaction with affiliates 9,878 7,573 18,567 14,784
Payments and settlements during the period [1] $ 13,014 $ 32,628 $ 31,344 $ 60,676
[1] Payments and settlements include payments and netting settlements made pursuant to master netting agreements between the Company and PFSI for the operating, investing and financing activities itemized in this Note.