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Leases - Additional Information (Detail) - USD ($)
$ in Thousands
Jun. 30, 2019
Jan. 01, 2019
Operating Lease Right-of-Use-Assets $ 109,757  
Operating lease liability $ 125,793  
Accounting Standards Update 2016-02 [Member]    
Operating Lease Right-of-Use-Assets   $ 90,900
Operating lease liability   $ 104,400