Shareholders' Equity Stock Grant Volatility (Details) |
3 Months Ended | 12 Months Ended | ||
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Oct. 31, 2015 |
Jan. 30, 2016 |
Jan. 31, 2015 |
Feb. 01, 2014 |
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| Share-based Compensation [Abstract] | ||||
| Expected Volatility Rate, Minimum | 75.00% | 88.00% | 98.00% | |
| Expected Volatility Rate, Maximum | 82.00% | 98.00% | 100.00% | |
| Risk Free Interest Rate, Minimum | 1.70% | 1.50% | 1.10% | |
| Risk Free Interest Rate, Maximum | 1.90% | 2.20% | 2.10% | |
| Grant Term Limit | 10 years | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years | |||
| Exercise Term Limit | 10 years | |||
| Minimum [Member] | ||||
| Share-based Compensation [Abstract] | ||||
| Expected Term | 6 years | 5 years | 5 years | |
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years | |||
| Maximum [Member] | ||||
| Share-based Compensation [Abstract] | ||||
| Expected Term | 6 years | 6 years | 6 years | |
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- Definition Share Based Compensation Arrangement by Share Based Payment Award Options Exercise Term Limit No definition available.
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- Definition Share Based Compensation Arrangement by Share Based Payment Award Options Grant Term Limit No definition available.
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- References No definition available.
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. No definition available.
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- Definition The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. No definition available.
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. No definition available.
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. No definition available.
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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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