VARIABLE INTEREST ENTITIES (AS RESTATED) - Schedule of Others’ Interests in the Equity of Consolidated Subsidiaries (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Noncontrolling Interest [Line Items]
Total Consolidated Equity	$ 7,243,372	$ 6,954,543	$ 7,101,038	$ 7,010,068
Others' Interest in Equity of Consolidated Subsidiary	93,820		$ 94,096
Net income (loss)	287,487	89,949
Others’ interest in net income (loss) of consolidated subsidiaries	$ 3,452	$ (1,300)
VIE, consolidated | Advance Purchaser
Noncontrolling Interest [Line Items]
Others' Ownership Interest	10.70%	10.70%
VIE, consolidated | Advance Purchaser | Weighted Average
Noncontrolling Interest [Line Items]
Others' Ownership Interest	10.70%		10.70%
VIE, consolidated | Newrez Joint Ventures
Noncontrolling Interest [Line Items]
Others' Ownership Interest	49.50%	49.50%
VIE, consolidated | Newrez Joint Ventures | Weighted Average
Noncontrolling Interest [Line Items]
Others' Ownership Interest	49.50%		49.50%
VIE, consolidated | Consumer Loan Companies
Noncontrolling Interest [Line Items]
Others' Ownership Interest	46.50%	46.50%
VIE, consolidated | Consumer Loan Companies | Weighted Average
Noncontrolling Interest [Line Items]
Others' Ownership Interest	46.50%		46.50%
VIE, consolidated | Advance Purchaser
Noncontrolling Interest [Line Items]
Total Consolidated Equity	$ 109,988	$ 104,458
Others' Interest in Equity of Consolidated Subsidiary	11,747	11,157
Net income (loss)	9,530		$ (1,370)
Others’ interest in net income (loss) of consolidated subsidiaries	1,018		(146)
VIE, consolidated | Newrez Joint Ventures
Noncontrolling Interest [Line Items]
Total Consolidated Equity	16,265	16,607
Others' Interest in Equity of Consolidated Subsidiary	8,051	8,220
Net income (loss)	112		(85)
Others’ interest in net income (loss) of consolidated subsidiaries	55		(42)
VIE, consolidated | Consumer Loan Companies
Noncontrolling Interest [Line Items]
Total Consolidated Equity	68,126	72,361
Others' Interest in Equity of Consolidated Subsidiary	31,679	$ 33,748
Net income (loss)	2,192		(2,391)
Others’ interest in net income (loss) of consolidated subsidiaries	$ 1,019		$ (1,112)