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General Information - Additional Information (Detail) - USD ($)
$ in Thousands
Oct. 25, 2019
Sep. 30, 2019
Jan. 01, 2019
Property Plant And Equipment [Line Items]      
Operating lease assets   $ 165,300  
Operating lease liabilities   149,364  
Asset held for sale   $ 1,000  
ASU 2016-02 [Member]      
Property Plant And Equipment [Line Items]      
Operating lease assets     $ 146,800
Operating lease liabilities     $ 146,800
Subsequent Event [Member]      
Property Plant And Equipment [Line Items]      
Outstanding common stock owned by loews corporation 53.00%