Funds Held for Customers - Summary of Gross Unrealized Losses And Fair Values (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Funds Held For Customers [Line Items]
Fair value	$ 66,781	$ 58,092
Unrealized losses	(11)	(13)
Certificates of Deposit
Funds Held For Customers [Line Items]
Fair value	20,006	12,027
Unrealized losses	(3)	(1)
Corporate Bonds
Funds Held For Customers [Line Items]
Fair value	31,785	46,065
Unrealized losses	(7)	$ (12)
U.S. Treasury Securities
Funds Held For Customers [Line Items]
Fair value	14,990
Unrealized losses	$ (1)