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Financial Instruments and Fair Value Measurements - Summary of Financial Instruments Not Carried at Fair Value (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Carrying Amount    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Cash, cash equivalents and restricted cash, Carrying amount $ 162,481 $ 157,870
Fair value    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Cash, cash equivalents and restricted cash, Fair value $ 162,481 $ 157,870