v3.26.1
Related Party Transactions - Mortgage Loan Servicing (Details) - USD ($)
3 Months Ended
Oct. 01, 2025
Sep. 30, 2025
Jan. 01, 2025
Sep. 12, 2016
Mar. 31, 2026
Mar. 31, 2025
Summary of mortgage loan servicing fees earned            
Owned servicing         $ 511,160,000 $ 466,739,000
Loan Servicing Agreement            
Transactions with Affiliates            
Base servicing fees per month for REO       $ 75    
Base servicing fees per month for fixed-rate non-distressed loans subserviced $ 7 $ 7.5        
Base servicing fees per month for adjustable rate non-distressed loans subserviced $ 8 $ 8.5        
Minimum | Loan Servicing Agreement            
Transactions with Affiliates            
Servicing fees amount per month for severely delinquent loans     $ 18      
Maximum | Loan Servicing Agreement            
Transactions with Affiliates            
Servicing fees amount per month for severely delinquent loans     $ 80      
Related Party | Loans acquired for sale at fair value | PennyMac Mortgage Investment Trust            
Summary of mortgage loan servicing fees earned            
Base and supplemental         17,624,000 19,202,000
Activity-based         2,099,000 2,527,000
Owned servicing         $ 19,723,000 $ 21,729,000