CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
ASSETS
Cash	$ 145,814	$ 938,371
Short-term investment at fair value	667,934	10,268
Principal-only stripped mortgage-backed securities at fair value pledged to creditors	960,267
Loans held for sale at fair value (includes $6,503,418 and $4,329,501 pledged to creditors)	6,565,704	4,420,691
Derivative assets	190,612	179,079
Servicing advances, net (includes valuation allowance of $73,908 and $73,991; $232,766 and $354,831 pledged to creditors)	400,764	694,038
Mortgage servicing rights at fair value (includes $7,656,519 and $7,033,892 pledged to creditors)	7,752,292	7,099,348
Investment in PennyMac Mortgage Investment Trust at fair value	1,070	1,121
Receivable from PennyMac Mortgage Investment Trust	$ 32,603	$ 29,262
Other Receivable, after Allowance for Credit Loss, Related Party [Extensible Enumeration]	Affiliated Entity [Member]	Affiliated Entity [Member]
Loans eligible for repurchase	$ 5,512,289	$ 4,889,925
Other (includes $16,082 and $15,653 pledged to creditors)	642,189	582,460
Total assets	22,871,538	18,844,563
LIABILITIES
Assets sold under agreements to repurchase	6,600,997	3,763,956
Mortgage loan participation purchase and sale agreements	517,527	446,054
Notes payable secured by mortgage servicing assets	1,723,632	1,873,415
Unsecured senior notes	3,162,239	2,519,651
Derivative liabilities	41,471	53,275
Mortgage servicing liabilities at fair value	1,718	1,805
Accounts payable and accrued expenses	331,512	449,896
Payable to PennyMac Mortgage Investment Trust	$ 81,040	$ 208,210
Other Liability, Related Party [Extensible Enumeration]	Affiliated Entity [Member]	Affiliated Entity [Member]
Payable to exchanged Private National Mortgage Acceptance Company, LLC unitholders under tax receivable agreement	$ 26,099	$ 26,099
Income taxes payable	1,105,550	1,042,886
Liability for loans eligible for repurchase	5,512,289	4,889,925
Liability for losses under representations and warranties	28,286	30,788
Total liabilities	19,132,360	15,305,960
Commitments and contingencies - Note 18
STOCKHOLDERS' EQUITY
Common stock-authorized 200,000,000 shares of $0.0001 par value; issued and outstanding, 51,257,630 and 50,178,963 shares, respectively	5	5
Additional paid-in capital	54,415	24,287
Retained earnings	3,684,758	3,514,311
Total stockholders' equity	3,739,178	3,538,603
Total liabilities and stockholders' equity	$ 22,871,538	$ 18,844,563