Fair Value of Financial Instruments (Schedule of Remaining Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Assets:
Deferred compensation plan investments, current and non-current portion	$ 27,159	$ 25,787
Total assets at fair value	27,159	25,787
Liabilities:
Deferred compensation plan investments, current and non-current portion	27,159	25,787
Liability for contingent consideration	46,334	77,925
Total liabilities at fair value	82,952	107,237
Foreign Exchange Contract [Member]
Liabilities:
Derivative Liability	26	21
Interest Rate Swap [Member]
Liabilities:
Derivative Liability	9,433	3,504
Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Deferred compensation plan investments, current and non-current portion	27,159	25,787
Total assets at fair value	27,159	25,787
Liabilities:
Deferred compensation plan investments, current and non-current portion	27,159	25,787
Liability for contingent consideration	0	0
Total liabilities at fair value	27,159	25,787
Quoted Prices in Active Markets (Level 1) [Member] | Foreign Exchange Contract [Member]
Liabilities:
Derivative Liability	0	0
Quoted Prices in Active Markets (Level 1) [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative Liability	0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Deferred compensation plan investments, current and non-current portion	0	0
Total assets at fair value	0	0
Liabilities:
Deferred compensation plan investments, current and non-current portion	0	0
Liability for contingent consideration	0	0
Total liabilities at fair value	9,459	3,525
Significant Other Observable Inputs (Level 2) [Member] | Foreign Exchange Contract [Member]
Liabilities:
Derivative Liability	26	21
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative Liability	9,433	3,504
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Deferred compensation plan investments, current and non-current portion	0	0
Total assets at fair value	0	0
Liabilities:
Deferred compensation plan investments, current and non-current portion	0	0
Liability for contingent consideration	46,334	77,925
Total liabilities at fair value	46,334	77,925
Significant Unobservable Inputs (Level 3) [Member] | Foreign Exchange Contract [Member]
Liabilities:
Derivative Liability	0	0
Significant Unobservable Inputs (Level 3) [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative Liability	$ 0	$ 0