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SCHEDULE I CONDENSED FINANCIAL INFORMATION OF REGISTRANT (RESULTS OF OPERATIONS ) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cost of sales |  |  |
Gross profit | $ 22,128 us-gaap_GrossProfit | $ 40,220 us-gaap_GrossProfit | $ 68,158 us-gaap_GrossProfit
Operating expenses: |  |  |
Selling, general and administrative | 24,515 us-gaap_SellingGeneralAndAdministrativeExpense | 37,626 us-gaap_SellingGeneralAndAdministrativeExpense | 52,457 us-gaap_SellingGeneralAndAdministrativeExpense
Research and development | 11,686 us-gaap_ResearchAndDevelopmentExpense | 14,520 us-gaap_ResearchAndDevelopmentExpense | 28,131 us-gaap_ResearchAndDevelopmentExpense
Amortization of intangible assets |  |  | 516 us-gaap_AmortizationOfIntangibleAssets
Restructuring charges |  |  | 358 us-gaap_RestructuringCharges
Total operating expenses | 36,201 us-gaap_OperatingExpenses | 53,453 us-gaap_OperatingExpenses | 97,701 us-gaap_OperatingExpenses
Operating loss | (14,073)us-gaap_OperatingIncomeLoss | (13,233)us-gaap_OperatingIncomeLoss | (29,543)us-gaap_OperatingIncomeLoss
Interest income | 589 us-gaap_InvestmentIncomeInterest | 511 us-gaap_InvestmentIncomeInterest | 2,612 us-gaap_InvestmentIncomeInterest
Interest expense | (88)us-gaap_InterestExpense | (151)us-gaap_InterestExpense | (240)us-gaap_InterestExpense
Other income, net | (2,249)us-gaap_OtherNonoperatingIncomeExpense | 11,480 us-gaap_OtherNonoperatingIncomeExpense | (2,973)us-gaap_OtherNonoperatingIncomeExpense
Income (loss) before income taxes | (28,646)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (20,379)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (33,187)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Equity in net loss of affiliated companies | (8,878)us-gaap_IncomeLossFromEquityMethodInvestments | (9,586)us-gaap_IncomeLossFromEquityMethodInvestments |
Income tax benefit (expense) | 1,618 us-gaap_IncomeTaxExpenseBenefit | 2,351 us-gaap_IncomeTaxExpenseBenefit | 2,392 us-gaap_IncomeTaxExpenseBenefit
Net loss attributable to UTStarcom Holdings Corp. | (30,264)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (22,721)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (34,385)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
UTSTARCOM HOLDINGS CORP [Member] |  |  |
Net sales |  |  |
Unrelated parties |  |  |
Related parties |  |  |
Intercompany |  |  |
Cost of sales |  |  |
Unrelated parties |  |  |
Related parties |  |  |
Intercompany |  |  |
Gross profit |  |  |
Operating expenses: |  |  |
Selling, general and administrative | 1,398 us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,377 us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,315 us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Research and development |  |  |
Amortization of intangible assets |  |  |
Restructuring charges |  |  |
Impairment of long-lived assets |  |  |
Total operating expenses | 1,398 us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,377 us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,315 us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Operating loss | (1,398)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (2,377)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (2,315)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Interest income |  |  |
Interest expense |  |  |
Other income, net |  |  |
Income (loss) before income taxes | (1,398)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (2,377)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (2,315)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Equity in net loss of affiliated companies | (28,866)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (20,344)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (32,070)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income tax benefit (expense) |  |  |
Net loss attributable to UTStarcom Holdings Corp. | $ (30,264)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ (22,721)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ (34,385)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember

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