Annual report pursuant to Section 13 and 15(d)

Real Estate and Intangible Assets - Estimated Aggregate Amortization Expense (Detail)

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Real Estate and Intangible Assets - Estimated Aggregate Amortization Expense (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Real Estate [Abstract]    
2017 $ 19,100  
2018 19,086  
2019 17,323  
2020 14,808  
2021 12,561  
Thereafter 36,049  
Total $ 118,927 $ 105,553