INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Net operating losses and tax credit carryforwards	$ 169,907	$ 23,627
Basis differences related to assets and investments	90,395	32,447
Goodwill	202,023	26,289
Fixed Asset Depreciation	2,536	0
Accrued expenses	47,086	44,572
Other	5,822	1,573
Total deferred tax assets	517,769	128,508
Less: valuation allowance	(34,563)	0	$ 0
Net deferred tax assets	483,206	128,508
Deferred tax liabilities:
Mortgage servicing rights	(923,311)	(791,691)
Basis differences related to assets and investments	(81,061)	(26,832)
Fixed asset depreciation	0	(19,302)
Other	(1,672)	(2,538)
Total deferred tax (liability)	(1,006,044)	(840,363)
Net deferred tax assets (liability)	(522,838)	$ (711,855)
Federal and State Tax Authority
Deferred tax liabilities:
Net operating loss carryforwards	610,400
Net operating loss carryforward that will expire	$ 420,900