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Fair Value of Financial Instruments (Schedule of Changes in Fair Value of Contingent Considerations) (Details) - Communications & Services Segment [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period $ 77,925 $ 108,233
Payments   (32,247)
Change in fair value of contingent consideration 2,472 4,584
Foreign currency translation adjustment   (397)
Fair value at end of period $ 80,397 $ 80,173