Annual report pursuant to Section 13 and 15(d)

Fee Revenue - Schedule of Contract Asset and Liability (Detail)

v3.20.2
Fee Revenue - Schedule of Contract Asset and Liability (Detail) - USD ($)
$ in Thousands
Apr. 30, 2020
Apr. 30, 2019
Revenue From Contract With Customer [Abstract]    
Contract assets-unbilled receivables $ 65,370 $ 60,595
Contract liabilities-deferred revenue $ 133,128 $ 112,999