Funds Held for Customers - Additional Information (Details)	Dec. 31, 2021 USD ($) InvestmentPosition	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Funds Held For Customers [Line Items]
Amortized Cost	$ 1,185,873,000	$ 914,334,000
Fair value	$ 1,185,668,000	$ 914,328,000
Debt securities percentage mature within one year	96.00%	97.00%
Short term marketable debt realized gains or losses	$ 0		$ 0
Debt securities mature within one year	$ 1,100,000,000	$ 882,400,000
Debt securities percentage mature thereafter	4.00%	3.00%
Debt securities mature thereafter	$ 51,300,000	$ 31,900,000
Number of unrealized loss investment positions | InvestmentPosition	170
Number of investment positions | InvestmentPosition	400
Accrued Interest Receivable
Funds Held For Customers [Line Items]
Amortized Cost	$ 2,500,000	1,900,000
Fair value	$ 2,500,000	$ 1,900,000