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COMMITMENTS AND CONTINGENT LIABILITIES (Guarantees) (Details) $ in Thousands | Dec. 31, 2017 USD ($)
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TAT Technologies Ltd [Member] |
Guarantees: |
Bank guarantee to secure liability to Israeli customs | $ 183
Limco Piedmont Inc [Member] |
Guarantees: |
Bank guarantee to secure liability to lessor | 741
Costumer [Member] |
Guarantees: |
Bank guarantee to secure liability to lessor | 40
Turbochrome Ltd. [Member] |
Guarantees: |
Bank guarantee to secure liability to lessor | $ 11

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- 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

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- 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

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

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

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

X
- Details
Name: | dei_LegalEntityAxis=tatt_CostumerMember
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: |