Related Party Transactions - Amounts due from Affiliate (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Amounts due from affiliate
Total due from affiliate	$ 29,198	$ 30,206
Payable to affiliate
Other Liabilities, Total	101,175	122,317
Related Party | PennyMac Mortgage Investment Trust
Amounts due from affiliate
Correspondent production fees	9,097	11,122
Servicing fees	7,266	6,822
Management fees	7,012	7,149
Allocated expenses and expenses incurred on PMT's behalf	5,823	3,508
Fulfillment fees		1,605
Payable to affiliate
Amounts advanced by PMT	86,020	106,302
Other expenses	15,155	16,015
Affiliated entities | PennyMac Mortgage Investment Trust
Amounts due from affiliate
Total due from affiliate	29,198	30,206
Payable to affiliate
Other Liabilities, Total	$ 101,175	$ 122,317