Annual report pursuant to Section 13 and 15(d)

Mortgage Notes Payable, Revolving Credit Facility, and Term Loan Facility Mortgage Notes Payable, Revolving Credit Facility, and Term Loan Facility - Derivative Instruments Additional Information (Details)

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Mortgage Notes Payable, Revolving Credit Facility, and Term Loan Facility Mortgage Notes Payable, Revolving Credit Facility, and Term Loan Facility - Derivative Instruments Additional Information (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative asset $ 677 $ 820
Derivative liability (396) 0
Interest rate caps | Derivatives Designated as Hedging Instruments    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative asset 552 450
Interest rate caps | Derivatives Not Designated as Hedging Instruments    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative asset 70 54
Interest rate swaps | Derivatives Designated as Hedging Instruments    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative asset $ 451 $ 316