Equity-based Compensation - Option Pricing Model (Details) - Options |
12 Months Ended |
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Sep. 30, 2018
$ / shares
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| 2017 Non-Plan Option | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Risk-free rate | 2.04% |
| Expected term (in years) | 5 years |
| Expected volatility | 50.00% |
| Expected dividend yield | 0.00% |
| Value of underlying stock (in dollars per share) | $ 5.56 |
| 2016 Equity Incentive Plan | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Risk-free rate | 1.31% |
| Expected term (in years) | 6 years |
| Expected volatility | 50.00% |
| Expected dividend yield | 0.00% |
| Value of underlying stock (in dollars per share) | $ 4.97 |
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The estimated measure of the 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Price of a single share of a number of saleable stocks of a company. 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://fasb.org/us-gaap/role/ref/legacyRef
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