Revenue, Performance Obligations, Deferred Revenue and Deferred Costs - Schedule of Subscription and Transaction Fees Disaggregated by Customer Category (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Total revenue	$ 46,209	$ 35,180
Subscription and Transaction Fees
Disaggregation Of Revenue [Line Items]
Total revenue	43,788	28,548
Subscription and Transaction Fees | Small-to-midsize Business and Accounting Firm Customers
Disaggregation Of Revenue [Line Items]
Total revenue	40,899	26,169
Subscription and Transaction Fees | Financial Institution Customers
Disaggregation Of Revenue [Line Items]
Total revenue	$ 2,889	$ 2,379