For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Revenues (Schedule of Major Customers Accounting for 10% or More of Net Revenues and Accounts Receivable Balance) (Details) - Customer Concentration Risk	3 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018
Westcon Group Inc. \| Net Revenue
Concentration Risk [Line Items]
Concentration risk (percent)	13.00%	15.00%
Westcon Group Inc. \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk (percent)	12.00%
Jenne Corporation \| Net Revenue
Concentration Risk [Line Items]
Concentration risk (percent)	12.00%	14.00%
Jenne Corporation \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk (percent)			13.00%
Tech Data Corporation \| Net Revenue
Concentration Risk [Line Items]
Concentration risk (percent)	17.00%	11.00%
Tech Data Corporation \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk (percent)	21.00%		17.00%