CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
ASSETS
Cash	$ 162,186	$ 238,482
Short-term investment at fair value	462,262	420,553
Principal-only stripped mortgage-backed securities at fair value pledged to creditors	784,958	825,865
Loans held for sale at fair value (includes $6,873,346 and $8,140,834 pledged to creditors)	6,961,224	8,217,468
Derivative assets	180,642	113,076
Servicing advances, net (includes valuation allowance of $82,025 and $85,788; $265,118 and $357,939 pledged to creditors)	430,602	568,512
Mortgage servicing rights at fair value (includes $9,350,647 and $8,609,388 pledged to creditors)	9,531,249	8,744,528
Investment in PennyMac Mortgage Investment Trust at fair value	965	944
Receivable from PennyMac Mortgage Investment Trust	$ 30,604	$ 30,206
Other Receivable, after Allowance for Credit Loss, Related Party [Extensible Enumeration]	Affiliated Entity [Member]	Affiliated Entity [Member]
Loans eligible for repurchase	$ 4,962,535	$ 6,157,172
Other (includes $13,124 and $16,697 pledged to creditors)	714,677	770,081
Total assets	24,221,904	26,086,887
LIABILITIES
Assets sold under agreements to repurchase	7,344,254	8,685,207
Mortgage loan participation purchase and sale agreements	700,296	496,512
Notes payable secured by mortgage servicing assets	1,327,143	2,048,972
Unsecured senior notes	4,185,012	3,164,032
Derivative liabilities	32,503	40,900
Derivative liability to PMT	1,038
Mortgage servicing liabilities at fair value	1,643	1,683
Accounts payable and accrued expenses	394,785	354,414
Payable to PennyMac Mortgage Investment Trust	$ 86,174	$ 122,317
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	$ 24,806	$ 25,898
Income taxes payable	1,097,452	1,131,000
Liability for loans eligible for repurchase	4,962,535	6,157,172
Liability for losses under representations and warranties	31,763	29,129
Total liabilities	20,189,404	22,257,236
Commitments and contingencies - Note 18
STOCKHOLDERS' EQUITY
Common stock-authorized 200,000,000 shares of $0.0001 par value; issued and outstanding, 51,671,905 and 51,376,616 shares, respectively	5	5
Additional paid-in capital	76,991	56,072
Retained earnings	3,955,504	3,773,574
Total stockholders' equity	4,032,500	3,829,651
Total liabilities and stockholders' equity	$ 24,221,904	$ 26,086,887