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GENERAL (Details) - TAT-Engineering Subsidiary [Member] | Dec. 31, 2017 | Nov. 25, 2015
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Subsidiary or Equity Method Investee [Line Items] |  |
Ownership percentage | 51.00% |
TAT-Engineering Parent [Member] |  |
Subsidiary or Equity Method Investee [Line Items] |  |
Ownership percentage |  | 49.00%

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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | tatt_SubsidiaryAxis=tatt_TATEngineeringLLCSubsidiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | tatt_ParentCompanyAxis=tatt_TATEngineeringLLCParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |