COMMON STOCK AND EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2021
Income Available to Common Shareholders:
Net Income Attributable to Alpine Income Property Trust, Inc.	$ 80	$ 14,282	$ 3,419	$ 15,088
Net Income Attributable to Alpine Income Property Trust, Inc. - Basic	80	14,282	3,419	15,088
Net Income Attributable to Alpine Income Property Trust, Inc. - Diluted	$ 80	$ 14,282	$ 3,419	$ 15,088
Weighted Average Number of Common Shares Outstanding (in shares)	14,059,173	11,844,108	14,030,025	11,753,904
Common Shares Applicable to Stock
Weighted Average Number of Common Shares Applicable to OP Units using Treasury Stock Method (in shares)	1,703,494	1,703,494	1,703,494	1,703,494
Total Shares Applicable to Diluted Earnings Per Share (in shares)	15,762,667	13,547,602	15,733,519	13,457,398
Per Common Share Data:
Basic (in dollars per share)	$ 0.01	$ 1.21	$ 0.24	$ 1.28
Diluted (in dollars per share)	$ 0.01	$ 1.05	$ 0.22	$ 1.12
Partners' capital account, units issued					479,640
CTO
Per Common Share Data:
Partners' capital account, units issued			1,223,854