Fair Value of Financial Instruments (Short-term Investments and Financial Instruments at Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Assets:
Deferred compensation plan investments, current and non-current portion	$ 23,352	$ 21,439
Total assets at fair value	25,113	21,495
Liabilities:
Deferred compensation plan investments, current and non-current portion	23,352	21,074
Liability for contingent consideration, current and non-current	108,233	114,036
Total liabilities at fair value	131,741	135,241
Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Deferred compensation plan investments, current and non-current portion	23,352	21,439
Total assets at fair value	23,352	21,439
Liabilities:
Deferred compensation plan investments, current and non-current portion	23,352	21,074
Liability for contingent consideration, current and non-current	0	0
Total liabilities at fair value	23,352	21,074
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Deferred compensation plan investments, current and non-current portion	0	0
Total assets at fair value	1,761	56
Liabilities:
Deferred compensation plan investments, current and non-current portion	0	0
Liability for contingent consideration, current and non-current	0	0
Total liabilities at fair value	156	131
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, current and non-current	108,233	114,036
Total liabilities at fair value	108,233	114,036
Foreign Exchange Contract [Member]
Assets:
Derivative assets	157	35
Liabilities:
Forward foreign currency exchange contracts	156	131
Foreign Exchange Contract [Member] \| Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Derivative assets	0	0
Liabilities:
Forward foreign currency exchange contracts	0	0
Foreign Exchange Contract [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets:
Derivative assets	157	35
Liabilities:
Forward foreign currency exchange contracts	156	131
Foreign Exchange Contract [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets:
Derivative assets	0	0
Liabilities:
Forward foreign currency exchange contracts	0	0
Interest Rate Swap [Member]
Assets:
Derivative assets	1,604	21
Interest Rate Swap [Member] \| Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Derivative assets	0	0
Interest Rate Swap [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets:
Derivative assets	1,604	21
Interest Rate Swap [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets:
Derivative assets	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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Fair value of financial and nonfinancial obligations.

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