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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS [Abstract] |  |
Hedge agreements |  |
Tower and Jazz Debentures [Member] |  |
Debt Instrument [Line Items] |  |
Fair value of debentures | 402,000 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = tsem_TowerAndJazzDebenturesMember | 319,000 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = tsem_TowerAndJazzDebenturesMember
Carrying amount | $ 217,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = tsem_TowerAndJazzDebenturesMember | $ 215,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = tsem_TowerAndJazzDebenturesMember

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- Definition The total of collateralized agreements including securities purchased under agreements to resell (repos), borrowed securities, and secured demand notes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(2)(i)(A)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 10 -Section 05 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7517284&loc=d3e93640-111703 + Details
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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13476-108611 + Details
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