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 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Non-cash gains:        
Receipt of MSRs in mortgage loan sale transactions     $ (71,262) $ (91,039)
Provision for losses relating to representations and warranties provided in loan sales:        
Pursuant to loan sales $ (348) $ (227) (658) (531)
Changes in fair value of loans and derivatives        
Total non-cash gains (28,488) 13,659 (94,291) 42,340
Net gains on loans held for sale 15,292 17,806 38,202 30,150
PennyMac Financial Services, Inc. [Member]        
Changes in fair value of loans and derivatives        
Net gains on loans held for sale 0 2,658 0 4,673
Nonaffiliates [Member]        
Cash losses:        
Sales of loans 303 (11,618) (39,954) (13,533)
Hedging activities (36,715) (21,055) 2,356 (79,117)
Cash gain, net of effects of cash hedging, on sale of mortgage loans held for sale (36,412) (32,673) (37,598) (92,650)
Non-cash gains:        
Receipt of MSRs in mortgage loan sale transactions 30,981 44,030 71,262 91,039
Provision for losses relating to representations and warranties provided in loan sales:        
Pursuant to loan sales (348) (227) (658) (531)
Reduction of liability due to change in estimate 245 912 687 2,080
Provision for losses relating to representations and warranties (103) 685 29 1,549
Changes in fair value of loans and derivatives        
Interest rate lock commitments 6,218 2,904 597 7,078
Loans (13,401) (8,515) (97) (21,959)
Hedging derivatives 28,009 8,717 4,009 40,420
Total changes in fair value of loans and derivatives 20,826 3,106 4,509 25,539
Total non-cash gains 51,704 47,821 75,800 118,127
Net gains on loans held for sale $ 15,292 $ 15,148 $ 38,202 $ 25,477