Fair Value of Financial Instruments (Schedule of Changes in Fair Value of Contingent Considerations) (Details) - Worldwide Communications & Services Segment - Fair Value, Inputs, Level 3 - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at beginning of period	$ 46,334	$ 77,925
Change in fair value of contingent consideration	516	2,472
Fair value at end of period	$ 46,850	$ 80,397