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Income Taxes Income Taxes (Tables)

12 Months Ended

Jun. 30, 2021

Income Tax Disclosure [Abstract]

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

The provision/(benefit) for income taxes consists of the following:

			Year Ended June 30,
			2021						2020						2019
Current:
Federal			$	55,598					$	46,137					$	54,800
State			13,897						13,690						12,946
Deferred:
Federal			14,401						21,130						4,177
State			2,360						3,451						3,427
			$	86,256					$	84,408					$	75,350

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,
			2021						2020
Deferred tax assets:
Contract and service revenues			$	13,428					$	14,469
Expense reserves and accruals (bad debts, compensation, and payroll tax)			17,566						14,096
Leasing liabilities			15,182						17,122
Net operating loss and tax credit carryforwards			3,242						3,786
Other, net			2,634						2,327
Total gross deferred tax assets			52,052						51,800
Valuation allowance			(270)						(473)
Net deferred tax assets			51,782						51,327
Deferred tax liabilities:
Accelerated tax depreciation			(37,066)						(39,619)
Accelerated tax amortization			(175,804)						(166,343)
Contract and service costs			(85,696)						(73,331)
Leasing right-of-use assets			(13,974)						(16,032)
Total gross deferred liabilities			(312,540)						(295,325)
Net deferred tax liability			$	(260,758)					$	(243,998)

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,
			2021						2020						2019
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			3.2		%				3.6		%				3.7		%
Research and development credit			(2.4)		%				(2.4)		%				(2.5)		%
Tax effects of share-based payments			(0.4)		%				(0.1)		%				(1.4)		%
Other (net)			0.3		%				—		%				0.9		%
			21.7		%				22.1		%				21.7		%

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, 2021, 2020, and 2019 follows:

			Unrecognized Tax Benefits
Balance at July 1, 2018			$	10,227
Additions for current year tax positions			1,135
Reductions for current year tax positions			(40)
Additions for prior year tax positions			562
Reductions for prior year tax positions			(531)
Additions related to business combinations			43
Settlements			(25)
Reductions related to expirations of statute of limitations			(876)
Balance at June 30, 2019			10,495
Additions for current year tax positions			1,451
Additions for prior year tax positions			867
Additions related to business combinations			192
Reductions related to expirations of statute of limitations			(2,893)
Balance at June 30, 2020			10,112
Additions for current year tax positions			1,598
Additions for prior year tax positions			490
Reductions for prior year tax positions			(30)
Reductions related to expirations of statute of limitations			(3,408)
Balance at June 30, 2021			$	8,762

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of unrecognized tax benefits for which a material change is reasonably possible in the next twelve months, typically including the nature of the uncertainty, the event(s) that could cause a material change, and an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made. An unrecognized tax benefit is the difference between a tax position taken in a tax return and the amounts recognized in the financial statements for which it is more likely than not, based on the technical merits of the position, that the tax position will not be sustained upon examination.

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