Earnings Per Share - Schedule of Net Loss and Weighted Average Number of Shares Outstanding (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net loss attributable to JPMREIT stockholders, basic	$ (3,633)	$ (2,582)	$ (5,205)	$ (9,000)
Net loss attributable to JPMREIT stockholders, diluted	$ (3,633)	$ (2,582)	$ (5,205)	$ (9,000)
Weighted-average shares of common stock outstanding, basic	16,811	7,093	15,332	5,525
Weighted-average shares of common stock outstanding, diluted	16,811	7,093	15,332	5,525