Cash and Cash Equivalents and Funds Held for Clients - Reconciliation (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Cash and Cash Equivalents and Funds Held for Clients
Amortized cost of cash and cash equivalents	$ 398,070	$ 401,811
Fair value of cash and cash equivalents	398,070	401,811	$ 288,767
Amortized cost of funds held for clients' cash and cash equivalents	2,084,456	2,443,858
Fair value of funds held for clients' cash and cash equivalents	2,084,456	2,443,858	$ 2,132,545
Available-for-sale securities
Amortized cost	612,101	509,145
Gross unrealized gains	7,694	1,361
Gross unrealized losses	(114)	(2,304)
Fair value	619,681	508,202
Total investments at amortized cost	3,094,627	3,354,814
Total investments gross unrealized gains	7,694	1,361
Total investments gross unrealized losses	(114)	(2,304)
Total investments	3,102,207	3,353,871
Corporate bonds
Available-for-sale securities
Amortized cost	372,171	314,728
Gross unrealized gains	6,497	1,094
Gross unrealized losses	(76)	(1,002)
Fair value	378,592	314,820
Asset-backed securities
Available-for-sale securities
Amortized cost	51,709	40,653
Gross unrealized gains	476	147
Gross unrealized losses	(7)	(118)
Fair value	52,178	40,682
Certificates of deposit
Available-for-sale securities
Amortized cost	61,681
Gross unrealized gains	9
Gross unrealized losses	(3)
Fair value	61,687
U.S treasury securities
Available-for-sale securities
Amortized cost	84,889	124,889
Gross unrealized gains	402	36
Gross unrealized losses	(27)	(973)
Fair value	85,264	123,952
Commercial paper
Available-for-sale securities
Amortized cost	17,273
Gross unrealized gains	0
Gross unrealized losses	(1)
Fair value	17,272
Other
Available-for-sale securities
Amortized cost	24,378	28,875
Gross unrealized gains	310	84
Gross unrealized losses	0	(211)
Fair value	$ 24,688	$ 28,748

Amortized cost of cash and cash equivalents.

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The amount of funds held for clients that are cash and cash equivalents.

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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Sum of the carrying amounts as of the balance sheet date of all investments.

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