XML 120 R101.htm IDEA: XBRL DOCUMENT
v3.8.0.1

INCOME TAXES (Other - Narrative) (Details) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 11, 2014 | Jan. 01, 2008 | Dec. 31, 2016 USD ($) item | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
INCOME TAXES |  |  |  |  |
Statutory tax rate (as a percent) |  |  | 35.00% |  |
Change in deferred tax valuation allowance |  |  | $ (3,015) | $ 14,241 | $ 1,824
Income tax benefit related to tax credits |  |  | $ 0 | $ 0 | $ 535
China |  |  |  |  |
INCOME TAXES |  |  |  |  |
Foreign statutory tax rate ((as a percent) |  |  | 25.00% |  |
Reduced tax rate for qualified high technology enterprises (as a percent) |  |  | 15.00% |  |
China | U T Starcom Telecom Co Ltd |  |  |  |  |
INCOME TAXES |  |  |  |  |
Number of subsidiaries approved for the reduced tax rate | item |  |  | 1 |  |
Reduced tax rate for qualified high technology enterprises (as a percent) | 15.00% | 15.00% |  |  |
Valid period for reduced income tax rate applicable to qualified high technology enterprise | 3 years | 3 years |  |  |

X
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=75116654&loc=d3e32123-109318 + Details
Name: | us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 + Details
Name: | us-gaap_IncomeTaxReconciliationTaxCredits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Income Tax Disclosure Line Items. + References No definition available. + Details
Name: | utsi_IncomeTaxDisclosureLineItems
Namespace Prefix: | utsi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the statutory corporate income tax rate in the foreign jurisdiction. + References No definition available. + Details
Name: | utsi_IncomeTaxesForeignStatutoryCorporateTaxRate
Namespace Prefix: | utsi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of subsidiaries of the entity approved for the reduced tax rate. + References No definition available. + Details
Name: | utsi_NumberOfSubsidiariesApprovedForReducedTaxRate
Namespace Prefix: | utsi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the reduced income tax rate applicable to High and new technology enterprise (HNTE). + References No definition available. + Details
Name: | utsi_ReducedIncomeTaxRateApplicableToHighAndNewTechnologyEnterprise
Namespace Prefix: | utsi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the period for which reduced income tax rate applicable on High and new technology enterprise. + References No definition available. + Details
Name: | utsi_ValidPeriodForReducedIncomeTaxRateApplicableToHighAndNewTechnologyEnterprise
Namespace Prefix: | utsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=utsi_UTStarcomTelecomCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |