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Fair Value of Financial Instruments (Narrative) (Details) - Modern Communications & Cloud - Significant unobservable inputs (Level 3)
$ in Thousands
3 Months Ended
Sep. 30, 2020
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Expense recognized due to change in fair value of contingent consideration $ 516
Intelisys  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Expense recognized due to change in fair value of contingent consideration $ 500