Transactions with Related Parties - Exchanged Private National Mortgage Acceptance Company, LLC Unitholders (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 27, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Transactions with Affiliates
Amount of tax benefits under the tax sharing agreement (as a percent)		85.00%
Payments to exchanged Private National Mortgage Acceptance Company, LLC unitholders under tax receivable agreement		$ (3,855)	$ (4,635)	$ (10,713)
Repricing of payable to exchanged Private National Mortgage Acceptance Company, LLC unitholders under tax receivable agreement		(576)		(280)
Private National Mortgage Acceptance Company
Transactions with Affiliates
Payments to exchanged Private National Mortgage Acceptance Company, LLC unitholders under tax receivable agreement		3,855	4,635	10,713
Repricing of payable to exchanged Private National Mortgage Acceptance Company, LLC unitholders under tax receivable agreement		(576)		(280)
Payable to exchanged PNMAC unitholders under tax receivable agreement		26,099	30,530	35,165
Related Party Donor Advised Fund
Transactions with Affiliates
Charitable contributions		$ 0	$ 5,800	$ 2,300
Townsgate Closing Services, LLC
Transactions with Affiliates
Advances to related party	$ 801,000
Maximum commitment amount	$ 1,500
Advances stated percentage	10.75%
Advances variable rate	10+ year USD High Yield Corporate Bond Index