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COMMITMENTS AND CONTINGENCIES (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Jazz [Member]
Lease [Line Items]
Rent expenses	$ 2,600us-gaap_LeaseAndRentalExpense / us-gaap_CounterpartyNameAxis = tsem_JazzMember	$ 2,400us-gaap_LeaseAndRentalExpense / us-gaap_CounterpartyNameAxis = tsem_JazzMember	$ 2,400us-gaap_LeaseAndRentalExpense / us-gaap_CounterpartyNameAxis = tsem_JazzMember
TPSCo [Member]
Lease [Line Items]
Lease term	5 years

X

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_CounterpartyNameAxis=tsem_JazzMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CounterpartyNameAxis=tsem_TPSCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: