v2.4.0.8

Stock Option Plans and Share-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2013
Stock Option Plans and Share-Based Compensation [Abstract] |
PSU % eligible vesting vs Total Shareholder Return - Second year [Table Text Block] | The following table shows the percent of PSUs granted in 2012 eligible for further time-based vesting based on our percentile placement:
Percentile Placement of Our Total Shareholder Return | % of PSUs Eligible for Time- Based Vesting
Below the 35th percentile | —%
At least the 35th percentile, but below the 50th percentile | 50%
At least the 50th percentile | 100%
Schedule of Stock Options Roll Forward [Table Text Block] | A summary of aggregate option activity for the nine months ended September 30, 2013 is presented below:
Options: |  | Number of Shares |  | Weighted- Average Exercise Price
|  | (in thousands) |  |
Outstanding at December 31, 2012 |  | 4,470 |  |  | $ | 14.06 |
Granted |  | 296 |  |  | $ | 18.10 |
Exercised |  | (1,450 | ) |  | $ | 12.59 |
Forfeited |  | (75 | ) |  | $ | 14.40 |
Expired |  | (56 | ) |  | $ | 15.68 |
Outstanding at September 30, 2013 |  | 3,185 |  |  | $ | 15.07 |
Exercisable at September 30, 2013 |  | 2,186 |  |  | $ | 14.85 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] | A summary of activity of both restricted stock and RSUs for the nine months ended September 30, 2013 is presented below:
| Restricted Stock |  | Restricted Stock Units
| Number of Shares |  | Weighted-Average Grant Date Fair Value Per Share |  | Number of Shares |  | Weighted-Average Grant Date Fair Value Per Share
| (in thousands) |  |  |  | (in thousands) |  |
Non-vested, December 31, 2012 | 58 |  |  | $ | 14.19 |  |  | 389 |  |  | $ | 14.09 |
Granted | 55 |  |  | $ | 18.20 |  |  | 125 |  |  | $ | 18.12 |
Vested | (61 | ) |  | $ | 14.23 |  |  | (98 | ) |  | $ | 13.90 |
Forfeited | — |  |  | $ | — |  |  | (21 | ) |  | $ | 14.07 |
Non-vested, September 30, 2013 | 52 |  |  | $ | 18.43 |  |  | 395 |  |  | $ | 15.41 |
PSU % eligible vesting vs total Shareholder Return placement - First year [Table Text Block] | A summary of activity of the PSUs for the nine months ended September 30, 2013 is presented below:
Performance-based Stock Units | Number of Units |  | Weighted- Average Grant Date Fair Value Per Unit
| (in thousands) |  |
Non-vested, December 31, 2012 | 175 |  |  | $ | 11.00 |
Granted | 140 |  |  | $ | 14.74 |
Vested | (38 | ) |  | $ | 11.02 |
Forfeited | (24 | ) |  | $ | — |
Non-vested, September 30, 2013 | 253 |  |  | $ | 13.07 |
The following table shows the percent of PSUs granted in 2011 and eligible for further time-based vesting based on our percentile placement:
Percentile Placement of Our Total Stockholder Return |  | % of PSUs Eligible for Time- Based Vesting
Below the 35th percentile |  | —%
At least the 35th percentile, but below the 50th percentile |  | 50%
At least the 50th percentile, but below the 65th percentile |  | 100%
At least the 65th percentile, but below the 75th percentile (1) |  | 110% to 119%
At or above the 75th percentile |  | 120%
(1) The actual percentage of PSUs eligible for further time-based vesting is based on straight-line interpolation, where, for example, if the ranking is the 70th percentile, then the vesting percentage is 115%.
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] | The impact on our results for share-based compensation for the three and nine months ended September 30, 2013 and 2012 was as follows (in thousands):

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- Definition PSU % eligible vesting - First year [Table Text Block] - For first year (2011) of PSU grants, provides the % of PSUs eligible for time-based vesting as of function of the percentile placement of Total Shareholder Return in that year against the Index + References No definition available. + Details
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- Definition PSU % eligible vesting - Second year [Table Text Block]: Fors the second year (2012) of PSU grants, provides the % of PSUs eligible for time-based vesting as of function of the percentile placement of Total Shareholder Return in that year against the Index + References No definition available. + Details
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- Details
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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of the change in stock options. + References No definition available. + Details
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