Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) segment	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Capitalized costs related to the improvement or replacement of real estate properties			$ 22,800	$ 12,200
Number of years from acquisition date (years)			1 year
Acquisition transaction costs	$ 298	$ 245	$ 434	416
Allowance for doubtful accounts	5,100		5,100		$ 4,500
Payroll related costs capitalized	$ 314	$ 268	$ 618	$ 525
Number of reportable segments | segment			1
Minimum | Building
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			39 years
Minimum | Property Improvements
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			10 years
Minimum | Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			3 years
Maximum | Building
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			40 years
Maximum | Property Improvements
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			20 years
Maximum | Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			10 years