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SHAREHOLDERS' EQUITY (Stock Option Plans TAT Technology) (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |
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Jun. 30, 2012 | Jun. 28, 2012 ₪ / shares shares | Dec. 31, 2017 USD ($) $ / shares shares | Dec. 31, 2016 USD ($) $ / shares shares | Dec. 31, 2015 USD ($) $ / shares shares | Dec. 31, 2017 ₪ / shares | Oct. 30, 2017 $ / shares shares | Aug. 10, 2017 $ / shares shares | Mar. 06, 2017 $ / shares shares | Dec. 31, 2016 ₪ / shares | Dec. 28, 2016 $ / shares shares | Nov. 03, 2016 $ / shares shares | Jun. 23, 2016 $ / shares shares | Mar. 29, 2016 $ / shares shares | Oct. 01, 2015 $ / shares shares | Jul. 01, 2015 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares, par value per share | ₪ / shares |  |  |  |  |  | ₪ 0.9 |  |  |  | ₪ 0.9 |  |  |  |  |  |
Number of options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options, beginning |  |  | 330,000 | 277,500 | 235,000 |  |  |  |  |  |  |  |  |  |  |
Options, Granted |  |  | 75,000 | 250,000 | 120,000 |  |  |  |  |  |  |  |  |  |  |
Options, Forfeited |  |  | (54,375) | (177,400) | (77,500) |  |  |  |  |  |  |  |  |  |  |
Options, Exercised |  |  | (19,583) | (20,100) |  |  |  |  |  |  |  |  |  |  |  |
Options, ending |  |  | 331,042 | 330,000 | 277,500 |  |  |  |  |  |  |  |  |  |  |
Exercisable at end of year |  |  | 120,417 | 20,000 | 30,000 |  |  |  |  |  |  |  |  |  |  |
Weighted average exercise price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options, beginning | $ / shares |  |  | $ 7.97 | $ 7.60 | $ 8.28 |  |  |  |  |  |  |  |  |  |  |
Options, Granted | $ / shares |  |  | 10.39 | 8.10 | 7.15 |  |  |  |  |  |  |  |  |  |  |
Options, Forfeited | $ / shares |  |  | 8.35 | 7.56 | 8.67 |  |  |  |  |  |  |  |  |  |  |
Options, Exercised | $ / shares |  |  | 7.3 | 6.50 |  |  |  |  |  |  |  |  |  |  |  |
Options, ending | $ / shares |  |  | 9.03 | 7.97 | 7.60 |  |  |  |  |  |  |  |  |  |  |
Exercisable at end of year | $ / shares |  |  | 7.95 | 7.15 | 6.50 |  |  |  |  |  |  |  |  |  |  |
Weighted-average grant-date fair value of options granted | $ / shares |  |  | $ 1.74 | $ 1.42 | $ 1.25 |  |  |  |  |  |  |  |  |  |  |
2012 Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for the plan |  | 380,000 |  |  |  |  | 80,000 | 45,000 | 30,000 |  | 60,000 | 50,000 | 100,000 | 40,000 | 40,000 | 80,000
Vesting period for plan | 3 years | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares, par value per share | ₪ / shares |  | ₪ 0.9 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price | $ / shares |  |  |  |  |  |  | $ 11.54 | $ 11.39 | $ 8.9 |  | $ 10 | $ 7.34 | $ 7.54 | $ 7.63 | $ 7.15 | $ 7.15
Dividend yield |  |  | 5.00% | 5.00% | 5.00% |  |  |  |  |  |  |  |  |  |  |
Weighted average exercise price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate intrinsic value | $ |  |  | $ 737 | $ 332 | $ 27 |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested stock options | $ |  |  | $ 335 |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation weighted average period of recognition, years |  |  | 1 year 2 months 5 days |  |  |  |  |  |  |  |  |  |  |  |  |
Period in which equity exceeds threshold | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2012 Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for the plan |  | 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected stock price volatility |  |  | 33.30% | 37.70% | 35.07% |  |  |  |  |  |  |  |  |  |  |
Expected option life (in years) |  |  | 4 years | 3 years | 3 years |  |  |  |  |  |  |  |  |  |  |
Risk free interest rate |  |  | 1.49% | 0.92% | 0.92% |  |  |  |  |  |  |  |  |  |  |
2012 Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for the plan |  | 680,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected stock price volatility |  |  | 40.50% | 40.30% | 38.97% |  |  |  |  |  |  |  |  |  |  |
Expected option life (in years) |  |  | 5 years 6 months | 5 years 6 months | 4 years |  |  |  |  |  |  |  |  |  |  |
Risk free interest rate |  |  | 1.81% | 1.79% | 1.39% |  |  |  |  |  |  |  |  |  |  |
2012 Plan [Member] | Vest upon the lapse of 12 months [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
2012 Plan [Member] | Vest on a quarterly basis [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period for plan |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested options awarded to employees as compensation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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