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STOCK-BASED COMPENSATION (Tables) | 6 Months Ended
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Jun. 30, 2011
STOCK-BASED COMPENSATION [Abstract] |
Schedule of share-based compensation, stock options, activity | A summary of activity for the Company's stock options as of and for the six months ended June 30, 2011 is presented below:
|  | Shares |  |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term |  | Aggregate Intrinsic Value (In thousands) |
Outstanding at beginning of period |  |  | 1,438,979 |  |  | $ | 24.21 |  |  |  |  |
Granted |  |  | 8,654 |  |  |  | 23.11 |  |  |  |  |
Exercised |  |  | (228,160 | ) |  |  | 12.68 |  |  |  |  |
Forfeited |  |  | (79,463 | ) |  |  | 26.36 |  |  |  |  |
Outstanding at end of period |  |  | 1,140,010 |  |  | $ | 26.36 |  | 2.46 years |  | $ | 1,633 |
Vested or expected to vest at end of period |  |  | 1,127,526 |  |  | $ | 26.45 |  | 2.44 years |  | $ | 1,585 |
Exercisable at end of period |  |  | 946,474 |  |  | $ | 27.98 |  | 2.15 years |  | $ | 1,155 |
Schedule of non-vested stock options activity | A summary of changes in unvested stock options and related information for the six months ended June 30, 2011 is presented below:
Unvested Options |  | Shares |  |  | Weighted Average Grant Date Fair Value (per share) |
Unvested at January 1, 2011 |  |  | 416,851 |  |  | $ | 5.04 |
Granted |  |  | 8,654 |  |  |  | 13.21 |
Vested |  |  | (225,582 | ) |  |  | 5.60 |
Forfeited |  |  | (6,387 | ) |  |  | 4.69 |
Unvested at June 30, 2011 |  |  | 193,536 |  |  | $ | 4.76 |
Schedule of share-based payment award, stock options, valuation assumptions | The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2011(5) |  |  | 2010(5) |  |  | 2011 |  |  | 2010(5) |
Expected term(1) |  |  | N/A |  |  |  | N/A |  |  |  | 4 years |  |  |  | N/A |
Expected volatility(2) |  |  | N/A |  |  |  | N/A |  |  |  | 78.1% |  |  |  | N/A |
Expected dividend yield(3) |  |  | N/A |  |  |  | N/A |  |  |  | 0.2% |  |  |  | N/A |
Risk-free interest rate(4) |  |  | N/A |  |  |  | N/A |  |  |  | 1.6% |  |  |  | N/A |
_______________________
| (1) | The expected term (estimated period of time outstanding) of stock options granted was estimated using the historical exercise behavior of employees.
| (2) | The expected volatility was based on historical volatility for a period equal to the stock option's expected term.
| (3) | The expected dividend yield is based on the Company's prevailing dividend rate at the time of grant.
| (4) | The risk-free rate is based on the U.S. Treasury strips in effect at the time of grant equal to the stock option's expected term.
| (5) | The Company did not issue any stock options during the three months ended June 30, 2011 and the six months ended June 30, 2010.
Schedule of share-based compensation arrangement by share-based payment award, options, grants in period, grant date intrinsic value | During the three and six months ended June 30, 2011 and 2010, information related to stock options is presented as follows:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
Weighted average grant date fair value of stock options granted during the period(1) |  | $ | - |  |  | $ | - |  |  | $ | 13.21 |  |  | $ | - |
Total intrinsic value of options exercised (in thousands) |  | $ | 855 |  |  | $ | 359 |  |  | $ | 2,052 |  |  | $ | 636 |
Total fair value of options vested (in thousands) |  | $ | 119 |  |  | $ | 404 |  |  | $ | 1,263 |  |  | $ | 2,076 |
____________________
(1) | The Company did not issue any stock options during the three months ended June 30, 2011 and the six months ended June 30, 2010.
Schedule of share-based compensation, restricted stock units award activity | A summary of the activity for restricted stock awards as of June 30, 2011, including changes during the six months then ended, is presented below:
|  | Shares |  |  | Weighted Average Price |
Outstanding unvested at beginning of period |  |  | 1,789,498 |  |  | $ | 17.09 |
Granted |  |  | 487,934 |  |  |  | 22.67 |
Vested |  |  | (114,318 | ) |  |  | 30.14 |
Forfeited |  |  | (138,594 | ) |  |  | 18.01 |
Outstanding unvested at end of period |  |  | 2,024,520 |  |  | $ | 17.64 |

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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 -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -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 -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -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 -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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