COMMON STOCK AND EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Available to Common Shareholders:
Net Income Attributable to Alpine Income Property Trust, Inc.	$ 29,720	$ 9,964	$ 985
Net Income Attributable to Alpine Income Property Trust, Inc. - Basic	29,720	9,964	985
Net Income Attributable to Alpine Income Property Trust, Inc. - Diluted	$ 29,720	$ 9,964	$ 985
Weighted Average Number of Common Shares Outstanding (in shares)	11,976,001	9,781,066	7,588,349
Common Shares Applicable to Stock
Weighted Average Number of Common Shares Applicable to OP Units using Treasury Stock Method (in shares)	1,703,494	1,465,161	1,223,854
Total Shares Applicable to Diluted Earnings Per Share (in shares)	13,679,495	11,246,227	8,812,203
Per Common Share Data:
Basic (in dollars per share)	$ 2.48	$ 1.02	$ 0.13
Diluted (in dollars per share)	$ 2.17	$ 0.89	$ 0.11
Partners' capital account, units issued	479,640	479,640
CTO
Per Common Share Data:
Partners' capital account, units issued	1,223,854