COMMON STOCK AND EARNINGS PER SHARE (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Available to Common Shareholders:
Net Income Attributable to Alpine Income Property Trust, Inc.	$ 240,238	$ 1,051,232	$ 252,907	$ 1,927,080
Weighted Average Number of Common Shares Outstanding	7,544,991		7,721,835
Common Shares Applicable to Stock
Common Shares Applicable to OP Units using Treasury Stock Method	1,223,854		1,223,854
Total Shares Applicable to Diluted Earnings Per Share	8,768,845		8,945,689
Per Common Share Data:
Basic (in dollars per share)	$ 0.03		$ 0.03
Diluted (in dollars per share)	$ 0.03		$ 0.03