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STOCKHOLDERS' EQUITY (Tables) | 12 Months Ended
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Dec. 31, 2014
Equity [Abstract] |
Summary of Stock Option Activity | A summary of the Company’s stock option and SARs activities and related information for the year ended December 31, 2014, is as follows:
|  | Number of options and SAR units |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term |  |  | Aggregate intrinsic-value |
Outstanding at the beginning of the year |  |  | 3,115,972 |  |  | $ | 16.30 |  |  |  |  |  |  |  |  |
Granted (1) |  |  | 457,500 |  |  |  | 14.94 |  |  |  |  |  |  |  |  |
Options/SAR units exercised |  |  | (190,871 | ) |  |  | 8.85 |  |  |  |  |  |  |  |  |
Options/SAR units forfeited or expired |  |  | (66,221 | ) |  |  | 18.48 |  |  |  |  |  |  |  |  |
Outstanding at the end of the year (2) |  |  | 3,316,380 |  |  | $ | 16.50 |  |  |  | 4.5 |  |  | $ | 10,881,253 |
Vested or expected to vest as of December 31 |  |  | 3,218,030 |  |  | $ | 16.51 |  |  |  | 4.4 |  |  | $ | 10,656,933 |
Exercisable as of December 31 (3) |  |  | 2,031,630 |  |  | $ | 16.51 |  |  |  | 3.3 |  |  | $ | 8,047,463 |
| (1) | Includes 325,500 SAR units which are convertible for a maximum number of shares of the Company’s common stock equal to 75% of the SAR units subject to the grant.
| (2) | Due to the ceiling imposed on the SAR grants, the outstanding amount equals a maximum of 2,946,669 shares of the Company’s common stock issuable upon exercise.
| (3) | Due to the ceiling imposed on the SAR grants, the exercisable amount equals a maximum of 1,894,343 shares of the Company’s common stock issuable upon exercise.
Schedule of Options Granted, Classified into Range of Exercise Price | The options and SARs granted to employees of the Company and its subsidiaries and the options granted to non-employee directors of the Company and its subsidiaries which were outstanding as of December 31, 2014 have been classified into a range of exercise prices as follows:
|  | Outstanding |  |  | Exercisable |
Exercise price (range) |  | Number of options |  |  | Weighted average remaining contractual life (years) |  |  | Weighted average exercise price |  |  | Number of options |  |  | Weighted average remaining contractual life (years) |  |  | Weighted average exercise price |
5.76-9.80 |  |  | 599,076 |  |  |  | 0.9 |  |  | $ | 8.37 |  |  |  | 599,076 |  |  |  | 0.9 |  |  | $ | 8.37 |
11.58-15.54 |  |  | 1,074,858 |  |  |  | 5.4 |  |  | $ | 14.76 |  |  |  | 461,119 |  |  |  | 3.9 |  |  | $ | 14.51 |
16.08-17.61 |  |  | 837,156 |  |  |  | 5.8 |  |  | $ | 16.48 |  |  |  | 318,821 |  |  |  | 5.8 |  |  | $ | 16.50 |
18.23-32.34 |  |  | 805,290 |  |  |  | 4.5 |  |  | $ | 24.89 |  |  |  | 652,614 |  |  |  | 3.9 |  |  | $ | 25.39 |
|  |  | 3,316,380 |  |  |  | 4.5 |  |  | $ | 16.50 |  |  |  | 2,031,630 |  |  |  | 3.3 |  |  | $ | 16.51 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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=6415400&loc=d3e5070-113901 + Details
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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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