TAXES ON INCOME (Schedule of Reconciliation of Tax Provisions to the Domestic and Effective Tax Rate) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
TAXES ON INCOME [Abstract]
Income before Income Taxes	$ 2,525	$ 5,267	$ 5,279
Statutory tax rate in Israel	26.50%	25.00%	25.00%
Theoretical taxes on income	669tatt_TheoreticalTaxExpenseBenefit	1,317tatt_TheoreticalTaxExpenseBenefit	1,320tatt_TheoreticalTaxExpenseBenefit
Increase (decrease) in taxes on income resulting from:
Tax adjustment for foreign subsidiaries subject to a different tax rate	457	453	434
Reduced tax rate on income derived from "Preferred Enterprises" plans	156us-gaap_OtherTaxExpenseBenefit	(255)us-gaap_OtherTaxExpenseBenefit	(143)us-gaap_OtherTaxExpenseBenefit
Change in enacted tax rates		34
Exempt income			(4)
Valuation allowance	(100)	294	499
Tax in respect of prior years	(44)	(342)	(83)
Permanent differences	222	(460)	67
Taxes on income as reported in the statements of income	$ 1,360us-gaap_IncomeTaxExpenseBenefit	$ 1,041us-gaap_IncomeTaxExpenseBenefit	$ 2,090us-gaap_IncomeTaxExpenseBenefit

The calculated expense or income for taxes using income before taxes multiplied by the domestic statutory rate.

No definition available.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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Amount of other income tax expense (benefit).

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