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Stockholders' Equity (Details) | 12 Months Ended
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Dec. 31, 2012
Vesting Schedule A [Member] |
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage | 25.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage One | 50.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Two | 75.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Three | 100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 12 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period One | 24 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period Two | 36 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period Three | 48 months
Vesting Schedule B [Member] |
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage | 33.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage One | 67.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Two | 100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 24 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period One | 36 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period Two | 48 months
Vesting Schedule C [Member] |
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage | 50.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage One | 100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 48 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period One | 57 months
Vesting Schedule D [Member] |
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage | 20.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage One | 40.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Two | 60.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Three | 80.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Four | 100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 6 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period One | 18 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period Two | 30 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period Three | 42 months
Share Based Compensation Arrangement By Share Based Payment Award Vesting Period Four | 54 months

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