Investment in Unconsolidated Ventures - Income Statement Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues:
Rental and other revenue	$ 24,177	$ 23,510	$ 71,253	$ 69,704
Total revenues	24,396	23,852	71,661	70,109
Expenses:
Real estate operating expenses	11,187	10,583	32,612	31,565
Interest expense	5,745	5,581	16,768	16,577
Depreciation	6,499	6,544	19,400	22,095
Total expenses	27,242	26,725	80,556	82,157
Total revenues less total expenses	(2,846)	(2,873)	(8,895)	(12,048)
Gain on sale of real estate	0	604	0	604
BRT's equity in earnings and equity in earnings from sale of unconsolidated joint venture properties	(2,205)	(1,494)	(7,721)	5,610
Unconsolidated Joint Ventures
Revenues:
Rental and other revenue	11,611	10,636	33,529	34,244
Total revenues	11,611	10,636	33,529	34,244
Expenses:
Real estate operating expenses	5,578	5,023	16,462	15,835
Interest expense	2,898	2,212	8,508	7,057
Depreciation	2,916	2,568	8,714	7,833
Total expenses	11,392	9,803	33,684	30,725
Total revenues less total expenses	219	833	(155)	3,519
Other equity earnings	5	3	26	119
Gain on insurance recoveries	0	0	0	65
Gain on sale of real estate	0	0	0	38,418
Loss on extinguishment of debt	0	0	0	(561)
Net income (loss)	224	836	(129)	41,560
BRT's equity in earnings and equity in earnings from sale of unconsolidated joint venture properties	$ 369	$ 426	$ 986	$ 16,449