SHAREHOLDERS' EQUITY - Narrative (Details)						1 Months Ended	3 Months Ended		9 Months Ended
SHAREHOLDERS' EQUITY - Narrative (Details)	Aug. 13, 2025 USD ($)	Aug. 01, 2025 USD ($)	Jan. 31, 2025 USD ($) shares	Jan. 29, 2025 USD ($) $ / shares shares	Jul. 01, 2024	Feb. 28, 2025 shares	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 03, 2025 shares	Dec. 31, 2024 $ / shares shares	Jul. 09, 2024 shares	Jul. 08, 2024 shares	Feb. 20, 2024 $ / shares shares
Class of Stock [Line Items]
Common stock, authorized (in shares)							50,000,000		50,000,000			50,000,000			50,000,000
Preferred stock, authorized (in shares)							10,000		10,000			10,000			10,000
Preferred stock, par value (in dollars per share) \| $ / shares							$ 0.01		$ 0.01			$ 0.01			$ 0.01
Preferred stock, issued (in shares)							0		0			0
Preferred stock, outstanding (in shares)							0		0			0
Common stock, outstanding (in shares)							13,420,986		13,420,986			7,004,676	6,889,032
Common stock, issued (in shares)							13,420,986		13,420,986			7,004,676
Payments of stock issuance costs \| $									$ 1,310,783	$ 0
Shares issued under the DRIP Plan (in shares)							0		0
Cost not yet recognized \| $							$ 1,600,000		$ 1,600,000
Cost not yet recognized, period for recognition (in years)									1 year 10 months 24 days
January 2025 Public Offering
Class of Stock [Line Items]
Common stock offering (in shares)			6,400,000	5,750,000
Offering price per share (in dollars per share) \| $ / shares				$ 12.00
Proceeds from transaction costs \| $			$ 71,300,000	$ 65,300,000
Proceeds from underwriting discounts \| $				$ 3,700,000
Payments of stock issuance costs \| $			$ 76,800,000
January 2025 Public Offering \| Board of Directors Chairman
Class of Stock [Line Items]
Common stock offering (in shares)				1,000,000
Over-Allotment Option
Class of Stock [Line Items]
Common stock offering (in shares)			650,000	862,500
Proceeds from transaction costs \| $			$ 7,300,000
Proceeds from underwriting discounts \| $			500,000
Payments of stock issuance costs \| $			$ 1,300,000
Shelf Registration Statement
Class of Stock [Line Items]
Maximum offering proceeds \| $		$ 500,000,000.0
At-the-Market Offering Program
Class of Stock [Line Items]
Maximum offering proceeds \| $	$ 50,000,000
Commission percentage	2.00%
Common Stock
Class of Stock [Line Items]
Stock split conversion ratio					68,890.32
Exchange ratio														0.3333
Dividend Reinvestment Plan
Class of Stock [Line Items]
Shares reserved for future issuance (in shares)											1,000,000
Equity Incentive Plan 2024
Class of Stock [Line Items]
Shares reserved for future issuance (in shares)							1,059,168		1,059,168
Share limit (in shares)			640,000				1,191,122		1,191,122
Restricted Stock
Class of Stock [Line Items]
Shares, outstanding (in shares)													88,685
Converted (in shares)							88,685		88,685			88,685	88,685
Restricted stock, granted (in shares)							0	36,363	19,625	36,363
Fair value of shares vested \| $							$ 141,100	$ 11,800	$ 636,600	$ 11,800
Granted (in dollars per share) \| $ / shares								$ 13.75	$ 11.78	$ 13.75
Vested (in shares)									47,597	805
Vested (in dollars per share) \| $ / shares									$ 13.43	$ 21.64
Restricted Stock \| Equity Incentive Plan 2024
Class of Stock [Line Items]
Restricted stock, granted (in shares)						19,625
Vesting period (in years)						3 years
Restricted stock under 2024 plan (in shares)							131,954		131,954
Restricted Stock \| Equity Incentive Plan 2024 \| Tranche one
Class of Stock [Line Items]
Vesting percentage (as a percent)						33.00%
Restricted Stock \| Equity Incentive Plan 2024 \| Tranche two
Class of Stock [Line Items]
Vesting percentage (as a percent)						33.00%
Restricted Stock \| Equity Incentive Plan 2024 \| Tranche three
Class of Stock [Line Items]
Vesting percentage (as a percent)						33.00%

Sunrise Realty Trust, Inc. 10-Q