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COMMITMENTS AND CONTINGENT LIABILITIES (Guarantees) (Details) - USD ($) $ in Thousands | Jan. 02, 2017 | Dec. 31, 2016
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TAT Technologies Ltd [Member] |  |
Guarantees: |  |
Bank guarantee to secure liability to Israeli customs |  | $ 165
Limco Piedmont Inc [Member] |  |
Guarantees: |  |
Bank guarantee to secure liability to lessor |  | 668
Turbochrome Ltd. [Member] |  |
Guarantees: |  |
Bank guarantee to secure liability to Israeli customs |  | $ 260
Turbochrome Ltd. [Member] | Subsequent Event [Member] |  |
Guarantees: |  |
Bank guarantee to secure liability reduce to Israeli customs | $ 130 |

X
- Definition Value of bank guarantee to secure the company's liability reduce to the Israeli customs. + References No definition available. + Details
Name: | tatt_BankGuaranteeToSecureLiabilityReduceToIsraeliCustoms
Namespace Prefix: | tatt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Value of bank guarantee to secure the company's liability to the Israeli customs. + References No definition available. + Details
Name: | tatt_BankGuaranteeToSecureLiabilityToIsraeliCustoms
Namespace Prefix: | tatt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Value of bank guarantee to secure the company's liability to the lessor. + References No definition available. + Details
Name: | tatt_BankGuaranteeToSecureLiabilityToLessor
Namespace Prefix: | tatt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_GuaranteesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=tatt_TatTechnologiesLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=tatt_LimcoPiedmontIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=tatt_TurbochromeLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |