Segment Information (Financial Information by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Sales	$ 924,559	$ 932,566
Depreciation and amortization	8,864	5,224
Change in fair value of contingent consideration	16,881	169
Operating income	7,598	22,875
Capital expenditures	1,310	1,976
Operating Segments \| United States
Segment Reporting Information [Line Items]
Sales	694,379	720,371
Operating Segments \| International
Segment Reporting Information [Line Items]
Sales	237,909	222,766
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Depreciation and amortization	866	819
Operating income	(172)	(498)
Capital expenditures	149	506
Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales	(7,729)	(10,571)
Barcode, Networking & Security Segment [Member] \| Operating Segments
Segment Reporting Information [Line Items]
Sales	620,329	627,210
Depreciation and amortization	3,739	1,636
Change in fair value of contingent consideration	69	0
Operating income	14,035	13,423
Capital expenditures	820	856
Communications & Services Segment [Member] \| Operating Segments
Segment Reporting Information [Line Items]
Sales	304,230	305,356
Depreciation and amortization	4,259	2,769
Change in fair value of contingent consideration	16,812	169
Operating income	(6,265)	9,950
Capital expenditures	$ 341	$ 614

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
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