Debt (Details 1) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011
Principal Outstanding	$ 198,876		$ 186,914
The Grove at Stateboro [Member]
Face Amount	28,726
Principal Outstanding	28,726		28,726
Stated Interest Rate	LIBOR + 250 bps
Interest Rate	2.74%
Maturity Date	Jan. 09, 2013	[1]
Grove At Milledgeville [Member]
Face Amount	16,250
Principal Outstanding	16,133		16,221
Stated Interest Rate	6.12%
Interest Rate	6.12%
Maturity Date	Oct. 01, 2016
Amortization	30 years
The Grove at Las Cruces [Member]
Face Amount	29,790
Principal Outstanding	29,574		29,738
Stated Interest Rate	6.13%
Interest Rate	6.13%
Maturity Date	Nov. 10, 2016
Amortization	30 years
Grove At Asheville [Member]
Face Amount	14,800
Principal Outstanding	14,772		14,800
Stated Interest Rate	5.77%
Interest Rate	5.77%
Maturity Date	Apr. 11, 2017
Amortization	30 years
Grove At Ellensburg [Member]
Face Amount	16,125
Principal Outstanding	16,125		16,125
Stated Interest Rate	5.10%
Interest Rate	5.10%
Maturity Date	Sep. 01, 2018
Amortization	30 years
Grove At Nacogdoches [Member]
Face Amount	17,160
Principal Outstanding	17,160		17,160
Stated Interest Rate	5.01%
Interest Rate	5.01%
Maturity Date	Sep. 01, 2018
Amortization	30 years
Grove At Greeley [Member]
Face Amount	15,233
Principal Outstanding	15,233		15,233
Stated Interest Rate	4.29%
Interest Rate	4.29%
Maturity Date	Oct. 01, 2018
Amortization	30 years
The Grove At Clarksville [Member]
Face Amount	16,350	[2]
Principal Outstanding	16,350	[2]	0
Stated Interest Rate	4.03%	[2]
Interest Rate	4.03%	[2]
Maturity Date	Jan. 07, 2022	[2]
Amortization	30 years	[2],[3]
Grove At Columbia [Member]
Face Amount	23,775	[2]
Principal Outstanding	23,775	[2]	15,375
Stated Interest Rate	3.83%	[2]
Interest Rate	3.83%	[2]
Maturity Date	Jan. 07, 2022	[2]
Amortization	30 years	[2]
Grove At Orono [Member]
Face Amount	15,206
Principal Outstanding	5,236		0
Stated Interest Rate	LIBOR + 275 bps
Interest Rate	2.99%
Maturity Date	Jun. 30, 2014
Grove At Aubum [Member]
Face Amount	16,294
Principal Outstanding	10,018		0
Stated Interest Rate	LIBOR + 295 bps
Interest Rate	3.19%
Maturity Date	Jul. 22, 2014
Grove At Flagstaff [Member]
Face Amount	19,842
Principal Outstanding	5,774		0
Stated Interest Rate	Prime + 25 bps
Interest Rate	3.50%
Maturity Date	Dec. 09, 2014
Construction(Three Properties) [Member]
Face Amount	37,523
Principal Outstanding	$ 0		$ 33,536
Stated Interest Rate	LIBOR + 475 bps
Interest Rate	0.00%	[4],[5]
Maturity Date	Nov. 19, 2013

[1] Note has a twelve-month extension option for a 1/9/2014 maturity date.

[2] Represents variable rate construction loan at December 31, 2011 which was paid off during the first quarter of 2012. Permanent financing was secured second quarter of 2012.

[3] Interest only for the first two years, followed by 30 year amortization.

[4] Interest rate at March 31, 2012 is not applicable as these loans were paid off during the first quarter of 2012.

[5] (2) Not applicable as the loan was paid off during the first quarter of 2012.