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Notes Payable - Summary of Aggregate Future Minimum Payments of Debt (Detail) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Debt Disclosure [Abstract]    
April 1, 2017 - December 31, 2017 $ 788  
2018 5,991  
2019 58,266  
2020 166  
2021 20,175  
Thereafter 427,118  
Total $ 512,504 $ 502,476