Funds Held for Customers - Summary of Gross Unrealized Losses And Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jun. 30, 2020
Funds Held For Customers [Line Items]
Fair value	$ 277,557	$ 66,781
Unrealized losses	(99)	(11)
Corporate Bonds
Funds Held For Customers [Line Items]
Fair value	200,898	31,785
Unrealized losses	(84)	(7)
U.S. Treasury Securities
Funds Held For Customers [Line Items]
Fair value		14,990
Unrealized losses		(1)
Asset Backed Securities
Funds Held For Customers [Line Items]
Fair value	14,994
Unrealized losses	(7)
Certificates of Deposit
Funds Held For Customers [Line Items]
Fair value	39,656	20,006
Unrealized losses	(4)	$ (3)
Municipal Bonds
Funds Held For Customers [Line Items]
Fair value	22,009
Unrealized losses	$ (4)