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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2013
Class of Stock [Line Items] |
Estimated On Date of Grant Binomial Option-Pricing Model | The fair value of stock option awards is estimated on the date of grant using a binomial option-pricing model that uses the assumptions noted in the following table:
Valuation Assumptions |  | 2013 |  | 2012 |  | 2011 |
Risk-free interest rate |  | 2.02% |  | 1.99% |  | 3.49% |
Expected volatility |  | 75.3% |  | 78.8% |  | 78.8% |
Expected dividend yield |  | 0.00% |  | 0.00% |  | 0.00% |
Expected term |  | 5 yrs. |  | 5 yrs. |  | 5 yrs. |
Stock Option |
Class of Stock [Line Items] |
Summary of All Stock Option Activity | A summary of all stock option activity during 2013 is as follows:
|  | Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life |  | Aggregate Intrinsic Value ($ in millions) |
Options Outstanding at December 31, 2012 |  | 1,882,554 |  | $ | 11.92 |  | 6.2 |  | $ | 0.8 |
Granted |  | 361,220 |  | $ | 9.61 |  |  |  |  |  |
Exercised |  | (85,917) |  | $ | 6.99 |  |  |  | $ | 0.3 |
Forfeited |  | (82,975) |  | $ | 9.58 |  |  |  |  |  |
Expired |  | (75,194) |  | $ | 11.37 |  |  |  |  |  |
Options Outstanding at December 31, 2013 |  | 1,999,688 |  | $ | 11.57 |  | 6.0 |  | $ | 4.4 |
Options Exercisable at December 31, 2013 |  | 1,235,826 |  | $ | 12.88 |  | 4.5 |  | $ | 2.1 |
Restricted Stock |
Class of Stock [Line Items] |
Summary of All Stock Option Activity | A summary of all restricted stock activity during 2013 is as follows:
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Restricted Stock Outstanding at December 31, 2012 |  | 773,950 |  | $ | 9.89 |
Granted |  | 521,181 |  | $ | 9.63 |
Vested |  | (62,183) |  | $ | 6.19 |
Forfeited |  | (86,017) |  | $ | 8.78 |
Restricted Stock Outstanding at December 31, 2013 |  | 1,146,931 |  | $ | 10.06 |

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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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