Funds Held for Customers - Summary of Fair Value of Funds Held For Customers (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Funds Held For Customers [Line Items]
Amortized cost	$ 1,185,873	$ 914,334
Gross unrealized gains	16	33
Gross unrealized losses	(221)	(39)
Fair value	1,185,668	914,328
Certificates of Deposit
Funds Held For Customers [Line Items]
Amortized cost	372,340	326,927
Fair value	372,340	326,927
Municipal Bonds
Funds Held For Customers [Line Items]
Amortized cost	16,929	42,952
Gross unrealized gains	6	5
Gross unrealized losses	(10)
Fair value	16,925	42,957
Corporate Bonds
Funds Held For Customers [Line Items]
Amortized cost	746,800	516,364
Gross unrealized gains	10	24
Gross unrealized losses	(156)	(38)
Fair value	746,654	516,350
Asset Backed Securities
Funds Held For Customers [Line Items]
Amortized cost	43,695	25,081
Gross unrealized gains		4
Gross unrealized losses	(50)
Fair value	43,645	25,085
U.S. Treasury Securities
Funds Held For Customers [Line Items]
Amortized cost	6,109	3,010
Gross unrealized losses	(5)	(1)
Fair value	$ 6,104	$ 3,009