v3.26.1
Net Gains on Loans Held for Sale - Summary of Net Gains on Mortgage Loans Held for Sale (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Non-cash gains:    
Receipt of MSRs in mortgage loan sale transactions $ (40,281) $ (47,009)
Provision for losses relating to representations and warranties provided in loan sales:    
Pursuant to loan sales (310) (304)
Changes in fair value of loans and derivatives    
Total non-cash gains (65,803) 28,681
Net gains on loans held for sale 22,910 12,344
PennyMac Financial Services, Inc. [Member]    
Changes in fair value of loans and derivatives    
Net gains on loans held for sale 0 2,015
Nonaffiliates [Member]    
Cash losses:    
Sales of loans (40,257) (1,915)
Hedging activities 39,071 (58,062)
Cash gain, net of effects of cash hedging, on sale of mortgage loans held for sale (1,186) (59,977)
Non-cash gains:    
Receipt of MSRs in mortgage loan sale transactions 40,281 47,009
Provision for losses relating to representations and warranties provided in loan sales:    
Pursuant to loan sales (310) (304)
Reduction of liability due to change in estimate 442 1,168
Provision for losses relating to representations and warranties 132 864
Changes in fair value of loans and derivatives    
Interest rate lock commitments (5,621) 4,174
Loans 13,304 (13,444)
Hedging derivatives (24,000) 31,703
Total changes in fair value of loans and derivatives (16,317) 22,433
Total non-cash gains 24,096 70,306
Net gains on loans held for sale $ 22,910 $ 10,329