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Stock-Based Compensation (Details 5) (USD $)
In Thousands, except Share data, unless otherwise specified |
9 Months Ended | 3 Months Ended | 3 Months Ended | 9 Months Ended | 0 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2013
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Sep. 30, 2013
Employee Stock Option
|
Sep. 30, 2013
Restricted Stock
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Jun. 30, 2013
Restricted Stock
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Mar. 31, 2013
Restricted Stock
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Dec. 31, 2012
Restricted Stock
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Mar. 31, 2013
Restricted Stock
First year performance condition achieved
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Sep. 30, 2013
Restricted stock with service conditions
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Sep. 30, 2013
Restricted stock with performance and subsequent service conditions
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Sep. 30, 2013
Restricted stock with performance and subsequent service conditions
Minimum
|
Sep. 30, 2013
Restricted stock with performance and subsequent service conditions
Maximum
|
Apr. 11, 2013
2012 Plan modification
Restricted stock with performance conditions
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|
| Stock-Based compensation | ||||||||||||
| Unrecognized compensation expense related to unvested stock options | $ 3,779 | |||||||||||
| Unrecognized compensation expense related to unvested stock options and restricted stock, weighted-average recognition period | 1 year 2 months 12 days | 1 year 10 months 24 days | 1 year 6 months | 3 years 6 months | ||||||||
| Unrecognized compensation expense related to unvested restricted | $ 5,554 | $ 3,819 | ||||||||||
| Unvested restricted stock, service condition | 2 years | |||||||||||
| Vested (in shares) | 70,964 | 181,625 | ||||||||||
| Number of performance awards valued due to modification (in shares) | 899,173 | 810,246 | 857,041 | 758,990 | 113,249 | |||||||
| Awards voluntarily forfeited (in shares) | 12,981 | 152,653 | 3,197 | 103,521 | ||||||||