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Other Revenue - Schedule of Other Revenue (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Disclosure Of Other Revenue [Abstract]                      
Facilitation fees                 $ 736 $ 2,422 $ 20,608
Advertising revenue                 6,619 3,152 4,495
Service fees on rail reservation                 3,035 1,047 2,021
Brand alliance fees                 3,422 3,479 621
Miscellaneous revenue                 4,235 3,456 8,600
Total $ 5,487 $ 5,733 $ 4,276 $ 2,551 $ 5,134 $ 4,137 $ 3,139 $ 1,146 $ 18,047 $ 13,556 $ 36,345