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
Jun. 30, 2026
Dec. 31, 2025
Derivative Instruments, Gain (Loss) [Line Items]    
Credit risk transfer strip liabilities $ 5,428 $ 5,999
Total derivative and credit risk transfer strip liabilities 9,047 6,932
Nonaffiliates [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative assets 44,184 49,696
Derivative liabilities 3,619 933
Total derivative and credit risk transfer strip liabilities 9,047 6,932
Pennymac Financial Services Inc [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative assets 5,239 6,247
Derivative liabilities $ 1,234 $ 2,257