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INFORMATION ON GEOGRAPHIC AREAS AND MAJOR CUSTOMERS (Schedule of Revenues of Major Customers) (Details) (Revenues [Member]) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Customer A [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage | 38.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_CustomerOneMember |  |  |  |  |
Customer B [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage | 7.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_CustomerTwoMember |  | 27.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_CustomerTwoMember |  | 43.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_CustomerTwoMember |
Other customers [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage | 16.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember | [1] | 16.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember | [1] | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember | [1]
Number of customers | 2 tsem_ConcentrationRiskNumberOfCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember |  | 2 tsem_ConcentrationRiskNumberOfCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember |  | 2 tsem_ConcentrationRiskNumberOfCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember |
Other customers [Member] | Minimum [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage | 7.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  | 7.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  | 4.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Other customers [Member] | Maximum [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage | 9.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  | 9.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  | 6.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_MajorCustomersAxis = tsem_OtherCustomersMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
[1] | Represents sales to two different customers accounted for between 7% and 9% of sales during 2014 and 2013 and to two different customers accounted for between 4% and 6% of sales during 2012.

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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