Quarterly report pursuant to Section 13 or 15(d)

Real Estate Held for Sale and Impairment Charges - Components of Income from Real Estate and Related Assets Held for Sale (Detail)

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Real Estate Held for Sale and Impairment Charges - Components of Income from Real Estate and Related Assets Held for Sale (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Real Estate Properties [Line Items]    
Operating expense $ 13,257 $ 11,757
Real Estate Held for Sale [Member]    
Real Estate Properties [Line Items]    
Operating revenue 134 205
Operating expense 71 88
Other expense (74) (57)
Total operating revenues $ (11) $ 60