Fair Value of Financial Instruments (Short-term Investments and Financial Instruments at Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Assets:
Deferred compensation plan investments, current and non-current portion	$ 25,787	$ 23,352
Total assets at fair value	25,955	25,113
Liabilities:
Deferred compensation plan investments, current and non-current portion	25,787	23,352
Liability for contingent consideration, current and non-current	77,925	108,233
Total liabilities at fair value	107,381	131,741
Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Deferred compensation plan investments, current and non-current portion	25,787	23,352
Total assets at fair value	25,787	23,352
Liabilities:
Deferred compensation plan investments, current and non-current portion	25,787	23,352
Liability for contingent consideration, current and non-current	0	0
Total liabilities at fair value	25,787	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	168	1,761
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	3,669	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	77,925	108,233
Total liabilities at fair value	77,925	108,233
Foreign Exchange Contract [Member]
Assets:
Derivative assets	168	157
Liabilities:
Forward foreign currency exchange contracts	165	156
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	168	157
Liabilities:
Forward foreign currency exchange contracts	165	156
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
Liabilities:
Interest rate swap	3,504
Interest Rate Swap [Member] | Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Derivative assets		0
Liabilities:
Interest rate swap	0
Interest Rate Swap [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Derivative assets		1,604
Liabilities:
Interest rate swap	3,504
Interest Rate Swap [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Derivative assets		$ 0
Liabilities:
Interest rate swap	$ 0