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GENERAL (Details)	Dec. 31, 2018	Nov. 25, 2015
TAT-Engineering Parent [Member]
Subsidiary or Equity Method Investee [Line Items]
Ownership percentage	51.00%	49.00%

X

- 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

X

- 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

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

X

- Details

Name:	srt_OwnershipAxis=tatt_TATEngineeringLLCParentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: