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SEGMENT INFORMATION, REVENUES BY GEOGRAPHY AND SIGNIFICANT CUSTOMERS - Percentage of Revenues, Accounts Receivable (Detail)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Revenue, Major Customer [Line Items]
Percentage of revenues	10.00%
Percentage of accounts receivable	10.00%		10.00%
Customer A
Revenue, Major Customer [Line Items]
Percentage of revenues	17.00%	15.00%	14.00%	12.00%
Percentage of accounts receivable	20.00%		20.00%		12.00%
Customer B
Revenue, Major Customer [Line Items]
Percentage of revenues		14.00%
Percentage of accounts receivable	11.00%		11.00%		11.00%
Customer C
Revenue, Major Customer [Line Items]
Percentage of accounts receivable	16.00%		16.00%		15.00%

X

- Definition

Entity wide accounts receivable major customer percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	ubnt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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Balance Type:	na
Period Type:	duration

X

- Details

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Balance Type:	na
Period Type:	duration