Significant Accounting Policies (Details) (USD $)	12 Months Ended									1 Months Ended	12 Months Ended			12 Months Ended						12 Months Ended			12 Months Ended
	Dec. 31, 2013 Segment Units Properties	Dec. 31, 2012 Properties	Dec. 31, 2011 Properties	Dec. 31, 1998	Dec. 31, 2013 Building and improvements [Member] Minimum [Member]	Dec. 31, 2013 Building and improvements [Member] Maximum [Member]	Dec. 31, 2013 Furniture, fixtures and equipment [Member] Minimum [Member]	Dec. 31, 2013 Furniture, fixtures and equipment [Member] Maximum [Member]	Dec. 31, 2013 Common Stock	Oct. 31, 2005 Down REIT Operating Patnership Florida [Member] Properties	Dec. 31, 2013 Down REIT Operating Patnership Florida [Member] Properties	Dec. 31, 2012 Down REIT Operating Patnership Florida [Member]	Dec. 31, 2012 REIT Partnership Owns Development Property In Nashville [Member]	Dec. 31, 2013 Apartment Community In Florida [Member] Units	Dec. 31, 2013 Vista Germantown [Member] Communities	Dec. 31, 2012 Vista Germantown [Member]	Sep. 24, 2010 Vista Germantown [Member]	Dec. 31, 2013 7001 Arlington Road [Member] sqft acre	Mar. 31, 2012 7001 Arlington Road [Member] Units	Dec. 31, 2013 Commercial Lease [Member]	Dec. 31, 2013 Future Development [Member] Units		Dec. 31, 2013 Future Development [Member] Monrovia [Member] Units		Dec. 31, 2013 Future Development [Member] 950 Third [Member] Units
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Number of apartment communities owned														1
Equity interest									100.00%		100.00%	97.60%											50.00%		50.00%
Equity interest in partnership													90.00%		100.00%	90.00%	90.00%	97.00%
Number of real estate assets contributed											2
Number of properties sold										1
Number of reportable segments	1
Useful lives of assets					5 years	30 years	5 years	10 years
Useful life of intangible assets	12 months																			60 months
Interest costs capitalized	$ 3,600,000	$ 1,500,000	$ 740,000
Payroll costs capitalized	2,800,000	2,400,000	875,000
Number of properties classified as held for sale	0	0
Number of properties recorded as impaired	0	0	0
Advertising expense	2,000,000	2,000,000	1,800,000
Opertating partnership units issued				522,032
Units redeemed	74,083	0	0
Units remaining	0
Area of land																		2.5
Cost of land																			12,200,000
Units to acquire	13,676														242				140		626	[1]	154	[1]	472	[1]
Area of real estate property to be developed																		7,000
Contributions in aid of construction															9,400,000		9,400,000
Redeemed ownership percentage															10.00%
Equity Method Investment, Land Purchase																							13,100,000
Equity Method Investment, Contribution of Partner Land Value																									$ 30,000,000

[1] Based on current projections as of February 4, 2014.