For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 35
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair Value of Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current portion of contingent consideration	$ 48,931		$ 30,675
Intelisys [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) due to change in fair value of contingent consideration	(4,094)	$ (830)
Barcode, Networking & Security Segment [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liability for contingent consideration	13,167	0	0	$ 0
Gain (loss) due to change in fair value of contingent consideration	(69)	0
Barcode, Networking & Security Segment [Member] \| POS Portal [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liability for contingent consideration	13,200
Gain (loss) due to change in fair value of contingent consideration	(100)
Communications & Services Segment [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liability for contingent consideration	90,326	110,835	$ 114,036	$ 24,652
Gain (loss) due to change in fair value of contingent consideration	(16,812)	(169)
Communications & Services Segment [Member] \| Intelisys [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liability for contingent consideration	85,600	95,800
Current portion of contingent consideration	31,000	22,800
Gain (loss) due to change in fair value of contingent consideration	(4,100)	(800)
Contingent consideration arrangements, maximum range of outcome	110,700
Communications & Services Segment [Member] \| Network1 [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liability for contingent consideration	4,700	12,500
Current portion of contingent consideration	4,700	7,600
Gain (loss) due to change in fair value of contingent consideration	(12,700)	400
Contingent consideration arrangements, maximum range of outcome	$ 5,600
Communications & Services Segment [Member] \| Imago [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liability for contingent consideration		2,500
Current portion of contingent consideration		2,500
Gain (loss) due to change in fair value of contingent consideration		$ 300