XML 63 R47.htm IDEA: XBRL DOCUMENT v3.21.2
Revenue from Contracts with Customers - Schedule of Contract Assets and Contract Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Sep. 30, 2020
Revenue From Contract With Customer [Abstract]    
Contract asset $ 12,934 $ 11,984
Deferred revenue $ 497,677 $ 426,465