INVESTMENTS - Schedule of Sector Composition of the Company’s Investments at Cost and Fair Value (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026 USD ($) position		Dec. 31, 2025 USD ($) position
Net Investment Income [Line Items]
Number of Positions | position	106		112
Cost Basis	$ 1,945,794	[1],[2]	$ 1,516,173	[3],[4]
Fair Value	$ 1,955,403	[1],[2]	$ 1,528,317	[3],[4]
Fair Value as % of Net Assets	213.10%	[1],[2]	205.20%	[3],[4]
Investments in loans and other notes
Net Investment Income [Line Items]
Number of Positions | position	37		32
Cost Basis	$ 1,679,055		$ 1,166,686
Fair Value	$ 1,688,393		$ 1,176,561
Fair Value as % of Net Assets	184.00%		157.00%
Investments in debt securities
Net Investment Income [Line Items]
Number of Positions | position	69		80
Cost Basis	$ 266,739		$ 349,487
Fair Value	$ 267,010		$ 351,756
Fair Value as % of Net Assets	29.00%		48.00%
Investments Owned At Fair Value | Investment Concentration Risk
Net Investment Income [Line Items]
% of Total Investments at Fair Value	100.00%		100.00%
Investments Owned At Fair Value | Investment Concentration Risk | Investments in loans and other notes
Net Investment Income [Line Items]
% of Total Investments at Fair Value	86.00%		77.00%
Investments Owned At Fair Value | Investment Concentration Risk | Investments in debt securities
Net Investment Income [Line Items]
% of Total Investments at Fair Value	14.00%		23.00%
Residential | Investments in loans and other notes
Net Investment Income [Line Items]
Number of Positions | position	12		11
Cost Basis	$ 808,261		$ 676,253
Fair Value	$ 812,731		$ 681,120
Fair Value as % of Net Assets	89.00%		91.00%
Residential | Investments in debt securities
Net Investment Income [Line Items]
Number of Positions | position	38		41
Cost Basis	$ 127,919		$ 177,898
Fair Value	$ 127,561		$ 178,405
Fair Value as % of Net Assets	14.00%		24.00%
Residential | Investments Owned At Fair Value | Investment Concentration Risk | Investments in loans and other notes
Net Investment Income [Line Items]
% of Total Investments at Fair Value	41.00%		45.00%
Residential | Investments Owned At Fair Value | Investment Concentration Risk | Investments in debt securities
Net Investment Income [Line Items]
% of Total Investments at Fair Value	7.00%		11.00%
Industrial | Investments in loans and other notes
Net Investment Income [Line Items]
Number of Positions | position	5		3
Cost Basis	$ 505,722		$ 206,812
Fair Value	$ 507,389		$ 208,696
Fair Value as % of Net Assets	55.00%		28.00%
Industrial | Investments in debt securities
Net Investment Income [Line Items]
Number of Positions | position	7		12
Cost Basis	$ 18,097		$ 41,946
Fair Value	$ 17,785		$ 41,883
Fair Value as % of Net Assets	2.00%		6.00%
Industrial | Investments Owned At Fair Value | Investment Concentration Risk | Investments in loans and other notes
Net Investment Income [Line Items]
% of Total Investments at Fair Value	26.00%		13.00%
Industrial | Investments Owned At Fair Value | Investment Concentration Risk | Investments in debt securities
Net Investment Income [Line Items]
% of Total Investments at Fair Value	1.00%		3.00%
Self-storage | Investments in debt securities
Net Investment Income [Line Items]
Number of Positions | position	1		1
Cost Basis	$ 3,533		$ 3,525
Fair Value	$ 3,572		$ 3,553
Fair Value as % of Net Assets	0.00%		0.00%
Self-storage | Investments Owned At Fair Value | Investment Concentration Risk | Investments in debt securities
Net Investment Income [Line Items]
% of Total Investments at Fair Value	0.00%		1.00%
Retail | Investments in loans and other notes
Net Investment Income [Line Items]
Number of Positions | position	14		15
Cost Basis	$ 209,106		$ 207,676
Fair Value	$ 211,791		$ 210,162
Fair Value as % of Net Assets	23.00%		28.00%
Retail | Investments in debt securities
Net Investment Income [Line Items]
Number of Positions | position	4		4
Cost Basis	$ 20,699		$ 21,380
Fair Value	$ 21,268		$ 22,006
Fair Value as % of Net Assets	2.00%		3.00%
Retail | Investments Owned At Fair Value | Investment Concentration Risk | Investments in loans and other notes
Net Investment Income [Line Items]
% of Total Investments at Fair Value	11.00%		14.00%
Retail | Investments Owned At Fair Value | Investment Concentration Risk | Investments in debt securities
Net Investment Income [Line Items]
% of Total Investments at Fair Value	1.00%		1.00%
Hospitality | Investments in debt securities
Net Investment Income [Line Items]
Number of Positions | position	6		11
Cost Basis	$ 35,406		$ 36,597
Fair Value	$ 35,377		$ 36,837
Fair Value as % of Net Assets	4.00%		5.00%
Hospitality | Investments Owned At Fair Value | Investment Concentration Risk | Investments in debt securities
Net Investment Income [Line Items]
% of Total Investments at Fair Value	2.00%		2.00%
Office | Investments in loans and other notes
Net Investment Income [Line Items]
Number of Positions | position	4		3
Cost Basis	$ 125,107		$ 75,945
Fair Value	$ 125,680		$ 76,583
Fair Value as % of Net Assets	14.00%		10.00%
Office | Investments in debt securities
Net Investment Income [Line Items]
Number of Positions | position	10		10
Cost Basis	$ 53,870		$ 63,146
Fair Value	$ 54,085		$ 63,934
Fair Value as % of Net Assets	6.00%		9.00%
Office | Investments Owned At Fair Value | Investment Concentration Risk | Investments in loans and other notes
Net Investment Income [Line Items]
% of Total Investments at Fair Value	6.00%		5.00%
Office | Investments Owned At Fair Value | Investment Concentration Risk | Investments in debt securities
Net Investment Income [Line Items]
% of Total Investments at Fair Value	3.00%		4.00%
Data center | Investments in loans and other notes
Net Investment Income [Line Items]
Number of Positions | position	1
Cost Basis	$ 27,155
Fair Value	$ 27,098
Fair Value as % of Net Assets	3.00%
Data center | Investments in debt securities
Net Investment Income [Line Items]
Number of Positions | position	1
Cost Basis	$ 734
Fair Value	$ 728
Fair Value as % of Net Assets	0.00%
Data center | Investments Owned At Fair Value | Investment Concentration Risk | Investments in loans and other notes
Net Investment Income [Line Items]
% of Total Investments at Fair Value	1.00%
Data center | Investments Owned At Fair Value | Investment Concentration Risk | Investments in debt securities
Net Investment Income [Line Items]
% of Total Investments at Fair Value	0.00%
Other | Investments in loans and other notes
Net Investment Income [Line Items]
Number of Positions | position	1
Cost Basis	$ 3,704
Fair Value	$ 3,704
Fair Value as % of Net Assets	0.00%
Other | Investments in debt securities
Net Investment Income [Line Items]
Number of Positions | position	2		1
Cost Basis	$ 6,481		$ 4,995
Fair Value	$ 6,634		$ 5,138
Fair Value as % of Net Assets	1.00%		1.00%
Other | Investments Owned At Fair Value | Investment Concentration Risk | Investments in loans and other notes
Net Investment Income [Line Items]
% of Total Investments at Fair Value	1.00%
Other | Investments Owned At Fair Value | Investment Concentration Risk | Investments in debt securities
Net Investment Income [Line Items]
% of Total Investments at Fair Value	0.00%		1.00%

[1] Maturity date is based on the fully extended maturity date of the instrument for investments in loans and other notes or rated final distribution date for investments in debt securities; however, investments may be repaid before such date.

[2] Under the Investment Company Act of 1940, as amended (together with the rules and regulations promulgated thereunder, the "1940 Act"), the Company is generally deemed to "control" a portfolio company if the Company owns more than 25% of its outstanding voting securities and/or holds the power to exercise control over the management or policies of the portfolio company. Under the 1940 Act, the Company is generally deemed an "affiliated person" of a portfolio company if the Company owns 5% or more of the portfolio company's outstanding voting securities. As of March 31, 2026, the Company did not own more than 5% of a portfolio company's outstanding voting securities.

[3] Maturity date is based on the fully extended maturity date of the instrument for investments in loans and other notes or rated final distribution date for investments in debt securities; however investments may be repaid before such date.

[4] Under the Investment Company Act of 1940, as amended (together with the rules and regulations promulgated thereunder, the "1940 Act"), the Company is generally deemed to "control" a portfolio company if the Company owns more than 25% of its outstanding voting securities and/or holds the power to exercise control over the management or policies of the portfolio company. Under the 1940 Act, the Company is generally deemed an "affiliated person" of a portfolio company if the Company owns 5% or more of the portfolio company's outstanding voting securities. As of December 31, 2025, the Company did not own more than 5% of a portfolio company's outstanding voting securities.