Income Taxes Income Taxes (Tables)

12 Months Ended

Jun. 30, 2024

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The provision for income taxes consists of the following:

	Year Ended June 30,
	2024		2023		2022
Current:
Federal	$	93,890	$	125,622	$	59,390
State	23,222		30,505		18,089
Deferred:
Federal	(1,615)		(40,218)		24,391
State	706		(7,981)		7,481
	$	116,203	$	107,928	$	109,351

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The tax effects of temporary differences related to deferred taxes shown on the balance sheets were:

	June 30,
	2024		2023
Deferred tax assets:
Contract and service revenues	$	21,985	$	18,186
Expense reserves and accruals (bad debts and compensation)	16,123		14,023
Leasing liabilities	14,755		12,462
Net operating loss and tax credit carryforwards	2,155		1,965
Other, net	3,369		2,916
Total gross deferred tax assets	58,387		49,552
Valuation allowance	(108)		(125)
Net deferred tax assets	58,279		49,427
Deferred tax liabilities:
Property and equipment depreciation	(26,689)		(27,788)
Intangibles, software development, and research and development tax amortization	(113,623)		(136,045)
Contract and service costs	(148,126)		(119,201)
Leasing right-of-use assets	(13,363)		(10,824)
Total gross deferred liabilities	(301,801)		(293,858)
Net deferred tax liability	$	(243,522)	$	(244,431)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The following analysis reconciles the statutory federal income tax rate to the effective income tax rates reflected above:

	Year Ended June 30,
	2024		2023		2022
Computed "expected" tax expense	21.0	%	21.0	%	21.0	%
Increase (reduction) in taxes resulting from:
State income taxes, net of federal income tax benefits	3.8	%	3.7	%	4.3	%
Research and development credit	(2.6)	%	(2.3)	%	(2.0)	%
Changes to prior year uncertain tax positions	0.6	%	—	%	—	%
Other (net)	0.5	%	0.3	%	(0.1)	%
	23.3	%	22.7	%	23.2	%

Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table Text Block]

A reconciliation of the unrecognized tax benefits for the fiscal years ended June 30, 2024, 2023, and 2022, follows:

	Unrecognized Tax Benefits
Balance at July 1, 2021	$	8,762
Additions for current year tax positions	1,863
Additions for prior year tax positions	1,642
Reductions for prior year tax positions	(36)
Reductions related to expirations of statute of limitations	(3,241)
Balance at June 30, 2022	8,990
Additions for current year tax positions	2,570
Additions for prior year tax positions	2,433
Reductions for prior year tax positions	(350)
Reductions related to expirations of statute of limitations	(1,638)
Balance at June 30, 2023	12,005
Additions for current year tax positions	3,924
Additions for prior year tax positions	4,672
Reductions related to expirations of statute of limitations	(1,524)
Balance at June 30, 2024	$	19,077