Funds Held for Customers - Summary of Gross Unrealized Losses And Fair Values (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Funds Held For Customers [Line Items]
Fair value	$ 129,259	$ 81,860
Unrealized losses	(52)	(39)
Corporate Bonds
Funds Held For Customers [Line Items]
Fair value	113,924	79,359
Unrealized losses	(50)	(38)
U.S. Treasury Securities
Funds Held For Customers [Line Items]
Fair value		2,501
Unrealized losses		$ (1)
Asset Backed Securities
Funds Held For Customers [Line Items]
Fair value	15,335
Unrealized losses	$ (2)