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Operating Segment Information (Detail) - (Table 2) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Segment Reporting Information [Line Items]        
Domestic $ 552,732 $ 556,643 $ 1,461,868 $ 1,651,366
Domestic Destination [Member]        
Segment Reporting Information [Line Items]        
Domestic 443,435 448,873 1,182,981 1,387,539
Non-US [Member]        
Segment Reporting Information [Line Items]        
Domestic 109,297 107,770 278,887 263,827
Geographical [Member]        
Segment Reporting Information [Line Items]        
Domestic $ 73,205 $ 50,417 $ 195,272 $ 222,915