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INCOME TAXES (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
INCOME TAXES [Abstract]
Enterprise tax rate	20.00%tsem_EnterpriseStatusTaxRate
Federal statutory rate	26.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Deferred tax asset	$ 7,816us-gaap_DeferredTaxAssetsNetCurrent	$ 6,010us-gaap_DeferredTaxAssetsNetCurrent
Deferred tax liability	75,278us-gaap_DeferredTaxLiabilitiesNoncurrent	13,611us-gaap_DeferredTaxLiabilitiesNoncurrent
Valuation allowance	297,024us-gaap_DeferredTaxAssetsValuationAllowance	258,678us-gaap_DeferredTaxAssetsValuationAllowance
Tower [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forwards	1,400,000us-gaap_OperatingLossCarryforwards / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Jazz [Member]
Tax Credit Carryforward [Line Items]
Unrecognized tax benefits related to tax return which its statute of limitation may expire in March 2015	11,000us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations / dei_LegalEntityAxis = tsem_JazzMember
Net operating loss carry forwards, annual utilization amount	2,100tsem_OperatingLossCarryforwardsAnnualUtilizationAmount / dei_LegalEntityAxis = tsem_JazzMember
Jazz [Member] | Federal [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forwards	31,000us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember / dei_LegalEntityAxis = tsem_JazzMember
Jazz [Member] | State [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forwards	141,000us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember / dei_LegalEntityAxis = tsem_JazzMember
TJP [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forwards	9,000us-gaap_OperatingLossCarryforwards / dei_LegalEntityAxis = tsem_TowerJazzJapanLimitedMember
Tower Jazz Panasonic Semiconductor Company Ltd [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forwards	$ 12,000us-gaap_OperatingLossCarryforwards / dei_LegalEntityAxis = tsem_TowerJazzPanasonicSemiconductorCompanyLtdMember

X

- Definition

Percentage of tax rate applicable to pretax income with approved enterprise status.

+ References

No definition available.

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- Definition

The amount the company has deemed available for each tax return, as of the balance sheet date.

+ References

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- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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