Summary of Significant Accounting Policies - Additional Information (Detail)			12 Months Ended
	Apr. 30, 2020 USD ($)	Apr. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) Client Segment	Jun. 30, 2019 USD ($) Client Segment	Jun. 30, 2018 USD ($) Client	Jul. 01, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of other clients that accounted for 10% or more of net revenue | Client			0	0	0
Number of other clients that accounted for 10% or more of net accounts receivable | Client			0	0
Maximum period for classifying as cash and cash equivalents			3 months
Costs incurred in development phase are capitalized and amortized period			6 months
Maximum period from the acquisition date for recording adjustments to the assets acquired and liabilities assumed			1 year
Number of reporting units | Segment			1	1
Impairment charges recorded			$ 0	$ 0
Impairment of long-lived assets	$ 0	$ 0
Weighted-average useful life of intangible assets				5 years 9 months 18 days
Right-of-use assets			9,118,000	$ 0		$ 13,100,000
Lease liabilities			$ 12,905,000			$ 16,700,000
Software Development [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of the assets			2 years
Software capitalized amount			$ 1,100,000	$ 2,300,000	$ 2,000,000.0
Customer Concentration Risk [Member] | Revenue Benchmark | Progressive Corporation [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of clients accounted for more than 10% of net revenue | Client			1	1	1
Concentration risk percentage accounted by major clients			21.00%	22.00%	23.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Progressive Corporation [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage accounted by major clients			17.00%	11.00%
Number of clients that accounted for 10% or more of net accounts receivable | Client			1	1