Funds Held for Customers - Summary of Funds Held for Customers (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Funds Held For Customers [Line Items]
Total funds held for customers	$ 1,672,833	$ 1,649,386
Total funds held for customers, net of income earned by the Company	1,668,903	1,644,250
Other Current Assets
Funds Held For Customers [Line Items]
Less - income earned by the Company	(3,930)	(5,136)
Certificates of Deposit
Funds Held For Customers [Line Items]
Total funds held for customers	163,819	85,953
Restricted Cash and Other Receivables
Funds Held For Customers [Line Items]
Total funds held for customers	571,626	586,893
Restricted Cash Equivalents
Funds Held For Customers [Line Items]
Total funds held for customers	421,372	433,709
Corporate Bonds
Funds Held For Customers [Line Items]
Total funds held for customers	489,165	493,879
U.S. Treasury Securities
Funds Held For Customers [Line Items]
Total funds held for customers	20,787	$ 48,952
Municipal Bonds
Funds Held For Customers [Line Items]
Total funds held for customers	$ 6,064