DEBT OBLIGATIONS, NET - Schedule of Company's Debt Obligations (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) extensionOfMaturityPeriod	Dec. 31, 2022 USD ($) extensionOfMaturityPeriod
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Value of Debt Obligations	$ 606,607	$ 847,863
Total	2,723,226
Carrying Amount of Collateral	0	0
Committed Loan Repurchase Facility
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	1,241,997	1,300,000
Carrying Value of Debt Obligations	604,999	616,894
Committed but Unfunded	636,998	683,106
Carrying Amount of Collateral	732,795	860,485
Fair Value of Collateral	733,074	861,284
Committed Loan Repurchase Facility | Maturing on 27 September 2025
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	500,000	500,000
Carrying Value of Debt Obligations	235,594	318,983
Committed but Unfunded	264,406	181,017
Carrying Amount of Collateral	342,467	428,477
Fair Value of Collateral	$ 342,467	$ 429,276
Number of extension maturity periods | extensionOfMaturityPeriod	2	2
Length of extension options	12 months	12 months
Committed Loan Repurchase Facility | Maturing on 19 December 2024
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	$ 300,000
Carrying Value of Debt Obligations	118,903
Committed but Unfunded	181,097
Carrying Amount of Collateral	174,938
Fair Value of Collateral	$ 174,938
Number of extension maturity periods | extensionOfMaturityPeriod	1
Length of extension options	364 days
Committed Loan Repurchase Facility | Maturing on 19 December 2023
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount		$ 300,000
Carrying Value of Debt Obligations		157,558
Committed but Unfunded		142,442
Carrying Amount of Collateral		244,102
Fair Value of Collateral		$ 244,102
Number of extension maturity periods | extensionOfMaturityPeriod		2
Length of extension options		364 days
Committed Loan Repurchase Facility | Maturing on April 30 2024
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	$ 141,997	$ 100,000
Carrying Value of Debt Obligations	139,162	47,415
Committed but Unfunded	2,835	52,585
Carrying Amount of Collateral	65,110	63,307
Fair Value of Collateral	$ 65,110	$ 63,307
Number of extension maturity periods | extensionOfMaturityPeriod	3	3
Length of extension options	12 months	12 months
Collateral for debt instrument	$ 114,700
Committed Loan Repurchase Facility | Maturing On 3 October 2025
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	200,000
Carrying Value of Debt Obligations	111,340
Committed but Unfunded	88,660
Carrying Amount of Collateral	150,280
Fair Value of Collateral	$ 150,559
Number of extension maturity periods | extensionOfMaturityPeriod	2
Length of extension options	12 months
Period prior to initial maturity when no no new advances are permitted	30 days
Committed Loan Repurchase Facility | Maturing On 22 January 2024
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	$ 100,000	$ 100,000
Carrying Value of Debt Obligations	0	0
Committed but Unfunded	100,000	100,000
Carrying Amount of Collateral	0	0
Fair Value of Collateral	$ 0	$ 0
Number of extension maturity periods | extensionOfMaturityPeriod	2	2
Length of extension options	12 months	12 months
Committed Loan Repurchase Facility | Maturing On 14 July 2023
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount		$ 100,000
Carrying Value of Debt Obligations		14,979
Committed but Unfunded		85,021
Carrying Amount of Collateral		21,206
Fair Value of Collateral		$ 21,206
Length of extension options		364 days
Committed Loan Repurchase Facility | Maturing On February 26 2023
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount		$ 100,000
Carrying Value of Debt Obligations		0
Committed but Unfunded		100,000
Carrying Amount of Collateral		0
Fair Value of Collateral		$ 0
Number of extension maturity periods | extensionOfMaturityPeriod		1
Length of extension options		12 months
Committed Loan Repurchase Facility | Maturing On 3 January 2023
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount		$ 100,000
Carrying Value of Debt Obligations		77,959
Committed but Unfunded		22,041
Carrying Amount of Collateral		103,393
Fair Value of Collateral		103,393
Committed Securities Repurchase Facility | Maturing On 27 May 2024
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	$ 100,000
Carrying Value of Debt Obligations	0
Committed but Unfunded	100,000
Carrying Amount of Collateral	0
Fair Value of Collateral	0
Committed Securities Repurchase Facility | Maturing On 27 May 2023
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount		100,000
Carrying Value of Debt Obligations		8,640
Committed but Unfunded		91,360
Carrying Amount of Collateral		10,023
Fair Value of Collateral		10,023
Uncommitted Securities Repurchase Facility | Maturing On 17 January 2024
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Value of Debt Obligations	1,608
Carrying Amount of Collateral	2,511
Fair Value of Collateral	2,511
Restricted securities held-to-maturity	1,900
Uncommitted Securities Repurchase Facility | Maturing On 2 March 2023
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Value of Debt Obligations		222,328
Carrying Amount of Collateral		247,351
Fair Value of Collateral		247,351
Restricted securities held-to-maturity		2,000
Total Repurchase Facilities
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	1,341,997	1,400,000
Carrying Value of Debt Obligations	606,607	847,862
Committed but Unfunded	736,998	774,466
Carrying Amount of Collateral	735,306	1,117,859
Fair Value of Collateral	735,585	1,118,658
Revolving Credit Facility | Maturing On 27 July 2024
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	323,850
Carrying Value of Debt Obligations	0
Committed but Unfunded	$ 323,850
Number of extension maturity periods | extensionOfMaturityPeriod	3
Length of extension options	12 months
Revolving Credit Facility | Maturing On 27 July 2023
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount		323,850
Carrying Value of Debt Obligations		0
Committed but Unfunded		$ 323,850
Number of extension maturity periods | extensionOfMaturityPeriod		4
Length of extension options		12 months
Mortgage Loan Financing | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	$ 437,384	$ 497,454
Carrying Value of Debt Obligations	437,759	497,991
Committed but Unfunded	0	0
Carrying Amount of Collateral	474,740	559,885
Fair Value of Collateral	625,454	710,977
CLO Debt
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	1,100,000
Unamortized debt issuance costs	2,100
CLO Debt | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	1,062,777	1,064,365
Carrying Value of Debt Obligations	1,060,719	1,058,462
Committed but Unfunded	0	0
Carrying Amount of Collateral	1,327,722	1,308,654
Fair Value of Collateral	1,327,722	1,308,654
Unamortized debt issuance costs	2,100	5,900
Borrowings from the FHLB | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Committed / Principal Amount	115,000	213,000
Carrying Value of Debt Obligations	115,000	213,000
Committed but Unfunded	0	0
Carrying Amount of Collateral	140,276	248,806
Fair Value of Collateral	140,276	248,806
Restricted securities held-to-maturity		6,600
Senior Unsecured Notes
Assets Sold under Agreements to Repurchase [Line Items]
Unamortized debt issuance costs	11,753
Senior Unsecured Notes | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Debt issued	1,575,614	1,643,794
Senior Unsecured Notes	1,563,861	1,628,382
Committed but Unfunded	0	0
Unamortized debt issuance costs	11,800	15,400
Total Debt Obligations, Net
Assets Sold under Agreements to Repurchase [Line Items]
Debt issued	4,856,622	5,142,463
Total	3,783,946	4,245,697
Committed but Unfunded	1,060,848	1,098,316
Carrying Amount of Collateral	2,678,044	3,235,204
Fair Value of Collateral	$ 2,829,037	$ 3,387,095
Minimum | Committed Loan Repurchase Facility | Maturing on 27 September 2025
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	7.08%	6.07%
Minimum | Committed Loan Repurchase Facility | Maturing on 19 December 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	7.46%
Minimum | Committed Loan Repurchase Facility | Maturing on 19 December 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		6.19%
Minimum | Committed Loan Repurchase Facility | Maturing on April 30 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	7.06%	6.00%
Minimum | Committed Loan Repurchase Facility | Maturing On 3 October 2025
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	7.22%
Minimum | Committed Loan Repurchase Facility | Maturing On 22 January 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	0.00%	0.00%
Minimum | Committed Loan Repurchase Facility | Maturing On 14 July 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		7.07%
Minimum | Committed Loan Repurchase Facility | Maturing On February 26 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		0.00%
Minimum | Committed Loan Repurchase Facility | Maturing On 3 January 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		5.74%
Minimum | Committed Securities Repurchase Facility | Maturing On 27 May 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	0.00%
Minimum | Committed Securities Repurchase Facility | Maturing On 27 May 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		5.04%
Minimum | Uncommitted Securities Repurchase Facility | Maturing On 17 January 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	6.61%
Minimum | Uncommitted Securities Repurchase Facility | Maturing On 2 March 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		4.73%
Minimum | Revolving Credit Facility | Maturing On 27 July 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	0.00%
Minimum | Revolving Credit Facility | Maturing On 27 July 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		0.00%
Minimum | Mortgage Loan Financing | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	4.39%	4.25%
Minimum | CLO Debt | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	6.68%	5.52%
Minimum | Borrowings from the FHLB | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	5.76%	2.74%
Minimum | Senior Unsecured Notes | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	4.25%	4.25%
Maximum | Committed Loan Repurchase Facility | Maturing on 27 September 2025
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	7.48%	6.57%
Maximum | Committed Loan Repurchase Facility | Maturing on 19 December 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	8.36%
Maximum | Committed Loan Repurchase Facility | Maturing on 19 December 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		7.07%
Maximum | Committed Loan Repurchase Facility | Maturing on April 30 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	7.60%	6.00%
Maximum | Committed Loan Repurchase Facility | Maturing On 3 October 2025
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	8.29%
Maximum | Committed Loan Repurchase Facility | Maturing On 22 January 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	0.00%	0.00%
Maximum | Committed Loan Repurchase Facility | Maturing On 14 July 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		7.07%
Maximum | Committed Loan Repurchase Facility | Maturing On February 26 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		0.00%
Maximum | Committed Loan Repurchase Facility | Maturing On 3 January 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		6.24%
Maximum | Committed Securities Repurchase Facility | Maturing On 27 May 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	0.00%
Maximum | Committed Securities Repurchase Facility | Maturing On 27 May 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		5.29%
Maximum | Uncommitted Securities Repurchase Facility | Maturing On 17 January 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	7.56%
Maximum | Uncommitted Securities Repurchase Facility | Maturing On 2 March 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		6.00%
Maximum | Revolving Credit Facility | Maturing On 27 July 2024
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	0.00%
Maximum | Revolving Credit Facility | Maturing On 27 July 2023
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate		0.00%
Maximum | Mortgage Loan Financing | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	9.03%	8.03%
Maximum | CLO Debt | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	9.13%	7.97%
Maximum | Borrowings from the FHLB | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	5.88%	4.70%
Maximum | Senior Unsecured Notes | Various Date
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate	5.25%	5.25%