INVESTMENT IN UNCONSOLIDATED VENTURES - Income Statement Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Rental and other revenue	$ 22,711	$ 21,691	$ 14,683	$ 11,430	$ 10,279	$ 7,709	$ 6,958	$ 7,095	$ 70,515	$ 32,041
Total revenues	22,711	21,697	14,685	11,434	10,283	7,714	6,961	7,099	70,527	32,057
Expenses:
Real estate operating expenses	10,262	9,195	6,348	4,753	4,515	3,404	3,166	3,117	30,558	14,202
Interest expense	5,520	5,061	2,912	2,021	1,953	1,535	1,609	1,660	15,514	6,757
Depreciation	8,031	8,165	5,010	3,606	3,285	1,787	1,416	1,537	24,812	8,025
Total expenses	27,628	26,094	17,803	14,013	12,992	9,840	9,865	9,428	85,538	42,125
Total revenues less total expenses	(4,917)	(4,397)	(3,118)	(2,579)	(2,709)	(2,126)	(2,904)	(2,329)	(15,011)	(10,068)
Impairment of assets					0	0	(520)	0	0	(520)
Insurance recoveries	850	0	0	0					850	0
Gain on sale of real estate properties	0	0	0	6	0	414	7,279	0	6	7,693
Loss on extinguishment of debt	0	0	(563)	0	(673)	(902)	0	0	(563)	(1,575)
Net income (loss) attributable to common stockholders	$ (4,219)	$ 7,059	$ 35,607	$ 11,508	$ (1,254)	$ 28,106	$ 6,027	$ (3,765)	49,955	29,114
Unconsolidated Joint Ventures
Revenues:
Rental and other revenue									72,873	121,906
Total revenues									72,873	121,906
Expenses:
Real estate operating expenses									33,086	56,507
Interest expense									16,269	30,964
Depreciation									17,798	35,636
Total expenses									67,153	123,107
Total revenues less total expenses									5,720	(1,201)
Other equity earnings									121	54
Impairment of assets									(8,553)	(2,813)
Insurance recoveries									8,553	2,813
Gain on insurance recoveries									567	2,179
Gain on sale of real estate properties									118,270	83,984
Loss on extinguishment of debt									(3,491)	(9,401)
Net income (loss) attributable to common stockholders									121,187	75,615
BRT equity in earnings and equity in earnings from sale of unconsolidated joint venture properties									$ 66,426	$ 30,774