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COMMITMENTS AND CONTINGENCIES (Narrative) (Details) (Governmental Investigations [Member], USD $)
In Millions, unless otherwise specified
0 Months Ended 1 Months Ended
Dec. 31, 2009
Dec. 31, 2005
item
Commitments and contingencies [Line Items]    
Number of aspects of the DOJ investigation requiring the production of documents   1utsi_LossContingenciesNumberOfAspectsOfDOJInvestigationForWhichProductionOfDocumentsRequired
Consent executed to judgment in favor of SEC as a part of the resolution of investigations $ 1.5utsi_LossContingenciesConsentExecutedToJudgmentInFavorOfSECAsPartOfResolutionOfInvestigations  
Additional amount paid under the non-prosecution agreement entered into with the DOJ $ 1.5utsi_LossContingenciesAdditionalAmountPaidUnderNonProsecutionAgreement  
Period for which the company agreed to undertake reporting obligation under the non-prosecution agreement entered into with the DOJ 3 years  
Maximum [Member]
   
Commitments and contingencies [Line Items]    
Maximum reporting obligation period 4 years