Annual report pursuant to Section 13 and 15(d)

Mortgage Notes Payable, Revolving Credit Facility, and Term Loan Facility - Mortgage Notes Payable (Details)

v3.6.0.2
Mortgage Notes Payable, Revolving Credit Facility, and Term Loan Facility - Mortgage Notes Payable (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
USD ($)
property
Dec. 31, 2015
USD ($)
property
Dec. 31, 2014
USD ($)
Debt Instrument [Line Items]      
Proceeds from debt issuance $ 78,705 $ 68,499 $ 52,085
Weighted average interest rate on debt outstanding (as percent) 4.48%    
Number of properties acquired | property 3 6  
Libor rate (as percent) 0.77%    
Debt repaid $ 88,899 $ 66,714 $ 8,144
Fixed Rate Mortgage Loans Issued 2016 [Member]      
Debt Instrument [Line Items]      
Proceeds from debt issuance $ 38,800    
Weighted average interest rate on debt outstanding (as percent) 4.68%    
Number of properties acquired | property 3    
Fixed Rate Mortgage Loans Issued 2016 [Member] | Mortgage notes payable [Member]      
Debt Instrument [Line Items]      
Weighted average interest rate on debt outstanding (as percent) 6.06%    
Debt repaid $ 79,383    
Variable Rate Mortgages Issued 2016 [Member]      
Debt Instrument [Line Items]      
Proceeds from debt issuance $ 39,905    
Variable Rate Mortgages Issued 2016 [Member] | Minimum [Member]      
Debt Instrument [Line Items]      
Libor rate (as percent) 2.35%    
Variable Rate Mortgages Issued 2016 [Member] | Maximum [Member]      
Debt Instrument [Line Items]      
Libor rate (as percent) 2.75%