Summary of Significant Accounting Policies - Current Presentation, Concentration of Risk, Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Funds Held For Clients, Corporate Investments and Client Fund Obligations
Period of repayment of client fund obligations	1 year
Other than temporary impairment losses
OTTI in accumulated other comprehensive income	$ 0	$ 0	$ 0
Accounts Receivable
Number of days past due before a balance will be reviewed for collectability	60 days
Activity in the allowance for doubtful accounts
Balance at the beginning of the year	$ 473	375	266
Charged to expense	309	283	296
Write-offs	(165)	(185)	(187)
Balance at the end of the year	$ 617	$ 473	$ 375
Total Revenue \| Clients \| Major Customer With Ten Percent Or More Of Benchmark
Concentrations of Risk
Percentage of total revenues	0.00%
Total Revenue \| Geographic Concentration Risk \| United States
Concentrations of Risk
Percentage of total revenues	100.00%

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