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TAXES ON INCOME (Schedule of Changes in Valuation Allowance) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Changes in Valuation Allowance
Balance	$ 3,306us-gaap_DeferredTaxAssetsValuationAllowance	$ 1,823us-gaap_DeferredTaxAssetsValuationAllowance	$ 184us-gaap_DeferredTaxAssetsValuationAllowance
Addition charged to expenses (Deductions)	268us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount	1,483us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount	1,639us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Balance	3,574us-gaap_DeferredTaxAssetsValuationAllowance	3,306us-gaap_DeferredTaxAssetsValuationAllowance	1,823us-gaap_DeferredTaxAssetsValuationAllowance
Investments In Foreign Subsidiaries And Foreign Corporate Joint Ventures That Are Permanent In Nature [Member]
Changes in Valuation Allowance
Undistributed earnings of foreign subsidiaries	10,849us-gaap_UndistributedEarningsOfForeignSubsidiaries / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = tatt_InvestmentsInForeignSubsidiariesAndForeignCorporateJointVenturesThatArePermanentInNatureMember
The amount of deferred tax liability that would be recorded if foreign earnings were distributed by cash dividend	2,712tatt_DeferredTaxLiabilityThatWouldBeRecognizedIfForeignEarningsWereDistributed / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = tatt_InvestmentsInForeignSubsidiariesAndForeignCorporateJointVenturesThatArePermanentInNatureMember
Tax rate on recognized foreign earnings dividends	25.00%tatt_DomesticTaxRateForUndistributedForeignEarningsIfRecognized / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = tatt_InvestmentsInForeignSubsidiariesAndForeignCorporateJointVenturesThatArePermanentInNatureMember
Approved Enterprise [Member]
Changes in Valuation Allowance
Undistributed earnings of foreign subsidiaries	1,728us-gaap_UndistributedEarningsOfForeignSubsidiaries / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = tatt_ApprovedEnterpriseMember
The amount of deferred tax liability that would be recorded if foreign earnings were distributed by cash dividend	$ 432tatt_DeferredTaxLiabilityThatWouldBeRecognizedIfForeignEarningsWereDistributed / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = tatt_ApprovedEnterpriseMember
Tax rate on recognized foreign earnings dividends	25.00%tatt_DomesticTaxRateForUndistributedForeignEarningsIfRecognized / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = tatt_ApprovedEnterpriseMember

X

- Definition

The amount of deferred tax liability that would be recorded if foreign earnings were distributed by cash dividend.

+ References

No definition available.

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- Definition

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+ References

No definition available.

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X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

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- Definition

Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 30

-Section 50

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- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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-Topic 740

-SubTopic 10

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