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Share Based Compensation Plans (Details 5) (Stock Equivalent Units [Member], USD $) | 12 Months Ended
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Dec. 31, 2012
Summary of information about SEUs outstanding |
Number Outstanding | 623,828
Number Exercisable and Fully Vested | 94,210
$ 0 - $ 5 [Member] |
Summary of information about SEUs outstanding |
Range of Exercise Price, Lower Range Limit | $ 0
Range of Exercise Price, Upper Range Limit | $ 5
Number Outstanding | 529,142
Weighted Average Remaining Life in Years | 7 years 7 months 21 days
Weighted Average Exercise Price | $ 0.21
Number Exercisable and Fully Vested | 94,210
Weighted Average Remaining Life in Years | 6 years 2 months 23 days
Weighted Average Exercise Price | $ 1.17
$10 - $15 [Member] |
Summary of information about SEUs outstanding |
Range of Exercise Price, Lower Range Limit | $ 10
Range of Exercise Price, Upper Range Limit | $ 15
Number Outstanding | 51,259
Weighted Average Remaining Life in Years | 7 years 1 month 17 days
Weighted Average Exercise Price | $ 10.38
Number Exercisable and Fully Vested | 0
Weighted Average Remaining Life in Years | 0 years
Weighted Average Exercise Price | $ 0.00
$25 - $30 [Member] |
Summary of information about SEUs outstanding |
Range of Exercise Price, Lower Range Limit | $ 25
Range of Exercise Price, Upper Range Limit | $ 30
Number Outstanding | 43,427
Weighted Average Remaining Life in Years | 8 years 3 months 22 days
Weighted Average Exercise Price | $ 27.52
Number Exercisable and Fully Vested | 0
Weighted Average Remaining Life in Years | 0 years
Weighted Average Exercise Price | $ 0.00

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