Fair Value of Financial Instruments (Schedule of Remaining Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Assets
Deferred compensation plan investments, current and non-current portion	$ 25,365	$ 23,352
Total assets at fair value	27,412	25,113
Liabilities
Deferred compensation plan investments, current and non-current portion	25,365	23,352
Liability for contingent consideration, current and non-current portion	80,173	108,233
Total liabilities at fair value	105,734	131,741
Quoted prices in active markets (Level 1) [Member]
Assets
Deferred compensation plan investments, current and non-current portion	25,365	23,352
Total assets at fair value	25,365	23,352
Liabilities
Deferred compensation plan investments, current and non-current portion	25,365	23,352
Liability for contingent consideration, current and non-current portion	0	0
Total liabilities at fair value	25,365	23,352
Significant other observable inputs (Level 2) [Member]
Assets
Deferred compensation plan investments, current and non-current portion	0	0
Total assets at fair value	2,047	1,761
Liabilities
Deferred compensation plan investments, current and non-current portion	0	0
Liability for contingent consideration, current and non-current portion	0	0
Total liabilities at fair value	196	156
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 portion	80,173	108,233
Total liabilities at fair value	80,173	108,233
Foreign Exchange Contract [Member]
Assets
Derivative instruments	250	157
Liabilities
Derivative instruments	196	156
Foreign Exchange Contract [Member] \| Quoted prices in active markets (Level 1) [Member]
Assets
Derivative instruments	0	0
Liabilities
Derivative instruments	0	0
Foreign Exchange Contract [Member] \| Significant other observable inputs (Level 2) [Member]
Assets
Derivative instruments	250	157
Liabilities
Derivative instruments	196	156
Foreign Exchange Contract [Member] \| Significant unobservable inputs (Level 3) [Member]
Assets
Derivative instruments	0	0
Liabilities
Derivative instruments	0	0
Interest Rate Swap [Member]
Assets
Derivative instruments	1,797	1,604
Interest Rate Swap [Member] \| Quoted prices in active markets (Level 1) [Member]
Assets
Derivative instruments	0	0
Interest Rate Swap [Member] \| Significant other observable inputs (Level 2) [Member]
Assets
Derivative instruments	1,797	1,604
Interest Rate Swap [Member] \| Significant unobservable inputs (Level 3) [Member]
Assets
Derivative instruments	$ 0	$ 0

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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, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

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Fair value of financial and nonfinancial obligations.

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