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Basis of Presentation - Additional Information (Detail)
$ in Thousands
Jun. 30, 2019
USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]  
Operating lease right-of-use asset $ 63,344
Operating lease liabilities 67,874
Accounting Standards Update 2016-02 [Member]  
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]  
Operating lease right-of-use asset 66,700
Operating lease liabilities $ 71,100