Quarterly report pursuant to Section 13 or 15(d)

Real Estate and Intangible Assets - Summary of Lease on Property (Detail)

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Real Estate and Intangible Assets - Summary of Lease on Property (Detail)
$ in Thousands
6 Months Ended
Jun. 30, 2018
USD ($)
ft²
Jun. 30, 2017
USD ($)
ft²
Real Estate Properties [Line Items]    
Aggregate Square Footage | ft² 34,441 83,662
Aggregate Annualized GAAP Rent $ 97 $ 1,683
Aggregate Tenant Improvement 0 1,020
Aggregate Leasing Commissions $ 14 $ 445
Weighted average    
Real Estate Properties [Line Items]    
Lease Term 3 years 7 months 6 days 11 years 3 months