Funds Held for Customers - Summary of Funds Held for Customers (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Funds Held For Customers [Line Items]
Total funds held for customers	$ 1,649,386	$ 1,333,597
Total funds held for customers, net of income earned by the Company	1,644,250	1,329,306
Other Current Assets
Funds Held For Customers [Line Items]
Less - income earned by the Company	(5,136)	(4,291)
Certificates of Deposit
Funds Held For Customers [Line Items]
Total funds held for customers	85,953	105,377
Restricted Cash and Other Receivables
Funds Held For Customers [Line Items]
Total funds held for customers	586,893	470,971
Restricted Cash Equivalents
Funds Held For Customers [Line Items]
Total funds held for customers	433,709	424,219
Corporate Bonds
Funds Held For Customers [Line Items]
Total funds held for customers	493,879	302,070
U.S. Treasury Securities
Funds Held For Customers [Line Items]
Total funds held for customers	$ 48,952	$ 30,960