Acquisition of Real Estate (Details 1) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Revenues		$ 44,255	$ 30,363
Net income (loss)		7,643	(6,558)
Net income (loss) attributable to BRG		635	(5,172)
Scenario, Previously Reported [Member]
Business Acquisition [Line Items]
Revenues		44,255	30,363
Net income (loss)		7,643	(6,558)
Net income (loss) attributable to BRG		$ 635	$ (5,172)
Earnings (loss) per share, basic and diluted (in dollars per share)	[1]	$ 0.04	$ (0.96)
Scenario, Adjustment [Member]
Business Acquisition [Line Items]
Revenues		$ 6,757	$ 18,026
Net income (loss)		(8,048)	(4,415)
Net income (loss) attributable to BRG		(7,887)	(4,274)
Pro Forma [Member]
Business Acquisition [Line Items]
Revenues		51,012	48,389
Net income (loss)		(405)	(10,973)
Net income (loss) attributable to BRG		$ (7,252)	$ (9,446)
Earnings (loss) per share, basic and diluted (in dollars per share)	[1]	$ (0.42)	$ (1.76)

[1] Pro-forma earnings per share, both basic and diluted, are calculated based on the net income (loss) attributable to BRG.