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Real Estate and Lending Activities - Summary of Operations for Assets Disposed in 2016 (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2016
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]    
Revenues $ 244 $ 7,851
Real estate depreciation and amortization   (1,754)
Property-related expenses   (114)
Other income (expense) 45 (23)
Income from real estate dispositions, net $ 289 $ 5,960