CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net gains on loans held for sale at fair value:
Net gains on loans held for sale at fair value	$ 176,064	$ 141,419	$ 338,505	$ 245,804
Loan origination fees	42,075	38,968	78,446	70,358
Fulfillment fees from PennyMac Mortgage Investment Trust	4,427	5,441	8,443	17,364
Loan servicing fees:
Loan servicing fees	440,696	356,471	864,880	694,528
Change in fair value of mortgage servicing rights and mortgage servicing liabilities	(101,315)	(55,257)	(129,900)	(291,704)
Mortgage servicing rights hedging results	(171,777)	(155,136)	(466,422)	(107,909)
Change in fair value of excess servicing spread financing payable to PennyMac Mortgage Investment Trust	(273,092)	(210,393)	(596,322)	(399,613)
Net loan servicing fees	167,604	146,078	268,558	294,915
Net interest expense:
Interest income	200,811	172,952	357,237	301,430
Interest expense	207,871	178,642	373,640	310,413
Net interest expense	(7,060)	(5,690)	(16,403)	(8,983)
Management fees from PennyMac Mortgage Investment Trust	7,133	7,078	14,321	14,335
Change in fair value of investment in and dividends received from PennyMac Mortgage Investment Trust	(40)	116	(30)	142
Results of real estate acquired in settlement of loans	193	199	599	341
Other	15,731	2,938	19,348	5,133
Total net revenues	406,127	336,547	711,787	639,409
Expenses
Compensation	141,956	136,982	288,332	284,917
Technology	35,690	35,244	71,657	71,282
Loan origination	40,270	31,646	70,838	58,732
Servicing	22,920	14,652	39,024	27,284
Professional services	9,404	17,888	18,666	38,895
Occupancy and equipment	7,893	10,066	16,569	18,886
Marketing and advertising	5,445	5,578	9,116	8,819
Other	8,695	11,574	19,848	19,530
Total expenses	272,273	263,630	534,050	528,345
Income before provision for income taxes	133,854	72,917	177,737	111,064
Provision for income taxes	35,596	14,667	40,171	22,436
Net income	$ 98,258	$ 58,250	$ 137,566	$ 88,628
Earnings per share
Basic (in dollars per share)	$ 1.93	$ 1.17	$ 2.71	$ 1.77
Diluted (in dollars per share)	$ 1.85	$ 1.11	$ 2.59	$ 1.68
Weighted-average shares outstanding
Basic (in shares)	50,955	49,874	50,751	50,013
Diluted (in shares)	53,204	52,264	53,140	52,803
Related Party
Net gains on loans held for sale at fair value:
Net gains on loans held for sale at fair value	$ (473)	$ (509)	$ (826)	$ (994)
Loan origination fees	431	701	790	2,111
Nonrelated Party
Net gains on loans held for sale at fair value:
Net gains on loans held for sale at fair value	176,537	141,928	339,331	246,798
Loan origination fees	41,644	38,267	77,656	68,247
Net interest expense:
Interest expense	207,871	178,642	373,640	310,413
Non-affiliates | Nonrelated Party
Loan servicing fees:
Loan servicing fees	375,040	307,119	733,066	597,816
PennyMac Mortgage Investment Trust | Related Party
Net gains on loans held for sale at fair value:
Net gains on loans held for sale at fair value	(473)	(509)	(826)	(994)
Loan servicing fees:
Loan servicing fees	20,264	20,317	40,526	40,766
Net interest expense:
Change in fair value of investment in and dividends received from PennyMac Mortgage Investment Trust	(40)	116	(30)	142
Others | Nonrelated Party
Loan servicing fees:
Loan servicing fees	$ 45,392	$ 29,035	$ 91,288	$ 55,946