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SHAREHOLDERS' EQUITY (Tables) | 12 Months Ended
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Dec. 31, 2016
Stockholders' Equity Note [Abstract] |
Schedule of Stock Options Assumptions | The fair value of the Company’s stock options granted under the 2012 plan for the years ended December 31, 2016, 2015 and 2014 was estimated using the following assumptions:
|  | 2016 |  | 2015 |  | 2014
Expected stock price volatility |  | 37.7% – 40.3% |  | 35.07% – 38.97% |  | 37.23% – 39.14%
Expected option life (in years) |  | 3 – 5.5 |  | 3 – 4 |  | 2.87 – 4
Risk free interest rate |  | 0.92% – 1.79% |  | 0.92% – 1.39% |  | 0.48% – 1.34%
Dividend yield |  | 5% |  | 5% |  | 5% – 4.6%
Schedule of Stock Option Activity |
The following table is a summary of the activity of TAT's Stock Option plan:
|  | Year ended December 31, |  |  | Year ended December 31, |  |  | Year ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
|  | Number of options |  |  | Weighted average exercise price |  |  | Number of options |  |  | Weighted average exercise price |  |  | Number of options |  |  | Weighted average exercise price |
Outstanding at the beginning of the year |  |  | 277,500 |  |  | $ | 7.60 |  |  |  | 235,000 |  |  | $ | 8.28 |  |  |  | 145,000 |  |  | $ | 6.50 |
Granted |  |  | 250,000 |  |  |  | 8.10 |  |  |  | 120,000 |  |  |  | 7.15 |  |  |  | 215,000 |  |  |  | 8.66 |
Forfeited |  |  | (177,400 | ) |  |  | 7.56 |  |  |  | (77,500 | ) |  |  | 8.67 |  |  |  | (40,000 | ) |  |  | 8.79 |
Exercised |  |  | (20,100 | ) |  |  | 6.50 |  |  |  | - |  |  |  | - |  |  |  | (85,000 | ) |  |  | 6.50 |
Outstanding at the end of the year |  |  | 330,000 |  |  | $ | 7.97 |  |  |  | 277,500 |  |  | $ | 7.60 |  |  |  | 235,000 |  |  |  | 8.28 |
Exercisable options |  |  | 20,000 |  |  | $ | 7.15 |  |  |  | 30,000 |  |  | $ | 6.50 |  |  |  | 20,000 |  |  | $ | 6.50

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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