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RELATED PARTY MANAGEMENT SERVICES BUSINESS - General Information (Details) $ / shares in Units, $ in Thousands				3 Months Ended		12 Months Ended		40 Months Ended
	Feb. 16, 2023 USD ($) $ / shares	Nov. 26, 2019 USD ($) property shares	Oct. 26, 2019 USD ($) $ / shares	Mar. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) property $ / shares shares	Mar. 31, 2023 USD ($) shares	Jan. 07, 2022 USD ($) property
Real Estate [Line Items]
Investment in Alpine Income Property Trust, Inc.				$ 39,259		$ 42,041		$ 39,259
Outstanding Principal				466,984				466,984
Revenues				24,717	$ 17,210
Management Fee Income
Real Estate [Line Items]
Revenues				1,098	936
Alpine Income Property Trust, Inc. Common Stock and Alpine Income Property OP, LP Limited Partnership Units [Member]
Real Estate [Line Items]
Investment in Alpine Income Property Trust, Inc.				$ 39,259		$ 42,041		$ 39,259
Investment ownership percentage (as a percent)				14.80%				14.80%
Alpine Income Property OP, LP Limited Partnership Units
Real Estate [Line Items]
Number of contributed properties \| property		5
Aggregate of OP units \| shares		1,223,854
Initial value		$ 23,300
Share purchased \| shares								1,223,854
Investment ownership percentage (as a percent)				7.80%				7.80%
Common Stock [Member]
Real Estate [Line Items]
Share purchased \| shares		421,053		129,271		155,665	8,088	1,108,814
Purchase price of shares		$ 8,000		$ 2,100		$ 2,700	$ 100
Investment in Alpine Income Property Trust, Inc.				$ 18,662		18,690		$ 18,662
Investment ownership percentage (as a percent)				7.00%				7.00%
Private placement
Real Estate [Line Items]
Share purchased \| shares		394,737
Purchase price of shares		$ 7,500
2022 Acquisitions \| Income Property Single Tenant
Real Estate [Line Items]
Number of real estate properties \| property									1
Sales price									$ 6,900
Management Agreement PINE
Real Estate [Line Items]
Percentage of base management fee				0.375%
Management fee (as a percent)				1.50%
Percentage of cumulative annual hurdle rate				8.00%
Amount of threshold incentive fee				$ 0
Percentage of multiply factor				15.00%
Amount of incentive fee						$ 0
Management fee revenue earned				$ 1,100	900
Proceeds from Dividends Received				$ 600	$ 600
Alpine
Real Estate [Line Items]
Number of properties sold \| property		15
Aggregate cash consideration		$ 125,900
Amount of shares authorized for purchase by the board	$ 2,100		$ 5,000
Average price per share \| $ / shares	$ 18.50		$ 17.75	$ 16.21		$ 17.57	$ 17.65
Alpine \| Mortgage Notes Payable Under CMBS Portfolio
Real Estate [Line Items]
Real estate acquired purchase price							$ 44,500
Number of real estate properties \| property							6
Alpine \| Mortgage Notes Payable Under CMBS Portfolio \| Income Property Single Tenant
Real Estate [Line Items]
Real estate acquired purchase price							$ 11,500
Number of real estate properties \| property							1