BUSINESS ACQUISITIONS - Schedule of Measurement Period Adjustments (Details) - Computershare Mortgage Services Inc - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Dec. 31, 2024	May 01, 2024	Jun. 30, 2024	Dec. 31, 2024
Business Combination [Line Items]
Total Consideration	$ 715,458	$ 708,026	$ 715,458
Subsequent Adjustments to Fair Value, Total consideration				$ 7,432
Residential mortgage loans, held-for-sale	2,402	2,402	2,402	2,402
Subsequent Adjustments to Fair Value, Residential mortgage loans, held-for-sale				0
Servicer advances receivable	269,484	275,782	269,484	269,484
Subsequent Adjustments to Fair Value, Servicer advances receivable				(6,298)
Mortgage servicing rights, at fair value	700,207	696,462	700,207	700,207
Subsequent Adjustments to Fair Value, Mortgage servicing rights, at fair value				3,745
Cash and cash equivalents	101,993	102,011	101,993	101,993
Subsequent Adjustments to Fair Value, Cash and cash equivalents				(18)
Restricted cash	2,271	2,237	2,271	2,271
Subsequent Adjustments to Fair Value, Restricted cash				34
Other assets	83,056	84,028	83,056	83,056
Subsequent Adjustments to Fair Value, Other assets				(972)
Total Assets Acquired	1,159,413	1,162,922	1,159,413	1,159,413
Subsequent Adjustments to Fair Value, Total Assets Acquired				(3,509)
Accrued expenses and other liabilities	225,944	236,141	225,944	225,944
Subsequent Adjustments to Fair Value, Accrued expenses and other liabilities				(10,197)
Secured notes and bonds payable	190,596	190,596	190,596	190,596
Subsequent Adjustments to Fair Value, Secured notes and bonds payable				0
Total Liabilities Assumed	416,540	426,737	416,540	416,540
Subsequent Adjustments to Fair Value, Total Liabilities Assumed				(10,197)
Net Assets	742,873	736,185	742,873	742,873
Subsequent Adjustments to Fair Value, Net Assets				6,688
Bargain purchase gain		$ 28,159
Subsequent Adjustments to Fair Value, Bargain Purchase Gain				(744)
Bargain Purchase Gain	$ 27,415		$ 27,415	$ 27,400