Funds Held for Customers - Summary of Fair Value of Funds Held For Customers (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Funds Held For Customers [Line Items]
Amortized cost	$ 1,227,786	$ 914,334
Gross unrealized gains	4	33
Gross unrealized losses	(1,395)	(39)
Fair value	1,226,395	914,328
Certificates of Deposit
Funds Held For Customers [Line Items]
Amortized cost	390,145	326,927
Gross unrealized losses	(1)
Fair value	390,144	326,927
Municipal Bonds
Funds Held For Customers [Line Items]
Amortized cost	9,544	42,952
Gross unrealized gains		5
Gross unrealized losses	(32)
Fair value	9,512	42,957
Corporate Bonds
Funds Held For Customers [Line Items]
Amortized cost	764,208	516,364
Gross unrealized gains	4	24
Gross unrealized losses	(944)	(38)
Fair value	763,268	516,350
Asset Backed Securities
Funds Held For Customers [Line Items]
Amortized cost	57,802	25,081
Gross unrealized gains		4
Gross unrealized losses	(405)
Fair value	57,397	25,085
U.S. Treasury Securities
Funds Held For Customers [Line Items]
Amortized cost	6,087	3,010
Gross unrealized losses	(13)	(1)
Fair value	$ 6,074	$ 3,009