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BASIS OF PRESENTATION AND LIQUIDITY (Details 2) (Recourse factoring on account receivable, USD $) In Millions, unless otherwise specified | 1 Months Ended | 3 Months Ended
--- | --- | ---
Aug. 31, 2011 item | Sep. 30, 2011 item
Recourse factoring on account receivable |  |
Debt |  |
Amount of available factoring line | $ 4.6 | $ 4.6
Number of debt instruments | 1 | 1
Number of customers with whom recourse factoring on accounts receivable is entered into by the entity | 1 | 1
Expiration term of debt instrument | 12 months | 12 months

X
- Definition The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the expiration period of debt instruments. + References No definition available. + Details
Name: | utsi_DebtInstrumentExpirationTerm
Namespace Prefix: | utsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the number of customers with whom recourse factoring on accounts receivable is entered into by the entity. + References No definition available. + Details
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Namespace Prefix: | utsi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of debt instruments entered into by the entity. + References No definition available. + Details
Name: | utsi_NumberOfDebtInstruments
Namespace Prefix: | utsi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration