Corporate Investments and Funds Held For Clients - Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Expected maturities of available-for-sale securities, amortized cost
One year or less	$ 102,679
One year to two years	25,865
Two years to three years	9,958
Three years to five years	8,061
Total available-for-sale securities	146,563	$ 20,452
Expected maturities of available-for-sale securities, fair value
One year or less	102,708
One year to two years	25,855
Two years to three years	9,941
Three years to five years	8,046
Total available-for-sale securities	$ 146,550	$ 20,539