Annual report pursuant to Section 13 and 15(d)

Real Estate and Intangible Assets - Schedule of Revenue and Earnings Recognized on Properties Acquired (Detail)

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Real Estate and Intangible Assets - Schedule of Revenue and Earnings Recognized on Properties Acquired (Detail) - Asset Acquisitions
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
acquisition
Business Acquisition [Line Items]  
Number of acquisitions completed | acquisition 2
Rental Revenue $ 1,462
Earnings $ 162