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Summary of Significant Accounting Policies - Summary of Company's Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Interest Rate Cap [Member] - Fair Value Measurements Recurring - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Interest rate caps $ 306 $ 1,147
Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Interest rate caps $ 306 $ 1,147