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EMPLOYEE COMPENSATION PLANS (TABLES) | 12 Months Ended
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Dec. 31, 2015
EMPLOYEE COMPENSATION PLANS [Abstract] |
Summary of non-vested RSU's and performance-based RSU's |
|  |  |  | Weighted |
|  |  |  | Average |
|  |  |  | Grant Date |
|  | Shares |  | Fair Value |
Unvested as of December 31, 2014 |  | 1,823,078 |  | $ | 23.02 |
Granted |  | 768,590 |  | $ | 26.52 |
Vested |  | (531,789) |  | $ | 22.71 |
Cancellations/expirations |  | (504,413) |  | $ | 21.79 |
Unvested as of December 31, 2015 |  | 1,555,466 |  | $ | 25.25 |
Schedule of stock option assumptions |
|  | Year Ended December 31, |
|  | 2011 |
Risk-free interest rate |  |  |  | 2.1 | %
Expected life in years |  | 1.3 | - | 2.7 |
Expected volatility |  |  |  | 54.4 | %
Dividend yield |  |  |  | — | %
Weighted-average volatility |  |  |  | 54.4 | %
Summary of stock option activity |
|  |  |  |  |  |  | Weighted |  |  |  |
|  |  |  | Weighted |  | Average |  | Aggregate |
|  |  |  | Average |  | Remaining |  | Intrinsic |
|  |  |  | Exercise |  | Contract |  | Value |
|  | Shares |  | Price |  | Term in Years |  | (000’s) |
Outstanding as of December 31, 2014 |  | 1,151,999 |  | $ | 13.67 |  |  |  |  |  |
Exercises |  | (894,168) |  | $ | 11.59 |  |  |  | $ | 13,894 |
Post-vest cancellations/expirations |  | (16,667) |  | $ | 17.31 |  |  |  |  |  |
Outstanding as of December 31, 2015 |  | 241,164 |  | $ | 21.11 |  | 3.94 |  | $ | 1,641 |
Vested and exercisable as of December 31, 2015 |  | 107,831 |  | $ | 25.80 |  | 1.54 |  | $ | 228 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited 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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- Definition Tabular disclosure of the number of fully vested share options (or share units) and share options expected to vest at the date of the latest statement of financial position, weighted-average exercise price (or conversion ratio), aggregate intrinsic value (except for nonpublic entities), and weighted-average remaining contractual term for both options (or share units) currently outstanding and options (or share units) exercisable (or convertible). + 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 (e) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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