Funds Held for Customers - Summary of Funds Held for Customers (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Funds Held For Customers [Line Items]
Total funds held for customers	$ 1,495,568	$ 1,333,597
Total funds held for customers, net of income earned by the Company	1,491,763	1,329,306
Other Current Assets
Funds Held For Customers [Line Items]
Less - income earned by the Company	(3,805)	(4,291)
Certificates of Deposit
Funds Held For Customers [Line Items]
Total funds held for customers	106,011	105,377
Restricted Cash and Other Receivables
Funds Held For Customers [Line Items]
Total funds held for customers	588,979	470,971
Restricted Cash Equivalents
Funds Held For Customers [Line Items]
Total funds held for customers	477,614	424,219
Corporate Bonds
Funds Held For Customers [Line Items]
Total funds held for customers	303,773	302,070
U.S. Treasury Securities
Funds Held For Customers [Line Items]
Total funds held for customers	$ 19,191	$ 30,960