v3.26.1
Derivative and Credit Risk Transfer Strip Assets and Liabilities - Summary of Derivative and Credit Risk Transfer Strip Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Derivative Instruments, Gain (Loss) [Line Items]    
Credit risk transfer strip liabilities $ 4,062 $ 5,999
Total derivative and credit risk transfer strip liabilities 21,329 6,932
Nonaffiliates [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative assets 50,766 49,696
Derivative liabilities 17,267 933
Total derivative and credit risk transfer strip liabilities 21,329 6,932
Pennymac Financial Services Inc [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative assets 3,823 6,247
Derivative liabilities $ 5,886 $ 2,257