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Segment Information, Revenues by Geography and Significant Customers (Revenues by product) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Revenues by Product Percentage	100.00%	100.00%
Total revenues	$ 61,535	$ 79,167
airMAX [Member]
Segment Reporting Information [Line Items]
Revenues by Product Percentage	52.00%	63.00%
Total revenues	32,057	49,835
New Platforms [Member]
Segment Reporting Information [Line Items]
Revenues by Product Percentage	25.00%	4.00%
Total revenues	15,628	2,734
Other Systems [Member]
Segment Reporting Information [Line Items]
Revenues by Product Percentage	6.00%	16.00%
Total revenues	3,784	12,765
Systems [Member]
Segment Reporting Information [Line Items]
Revenues by Product Percentage	83.00%	83.00%
Total revenues	51,469	65,334
Embedded Radio [Member]
Segment Reporting Information [Line Items]
Revenues by Product Percentage	3.00%	4.00%
Total revenues	1,714	3,225
Antennas/other [Member]
Segment Reporting Information [Line Items]
Revenues by Product Percentage	14.00%	13.00%
Total revenues	$ 8,352	$ 10,608

X

- Definition

Revenues by product percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	ubnt_
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Balance Type:	na
Period Type:	duration

X

- Definition

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

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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Period Type:	duration