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Stock-based Compensation, Equity Grants, and Warrants - Stock Options Fair Value Assumptions (Details) - $ / shares |  |  | 6 Months Ended
--- | --- | --- | ---
Dec. 01, 2017 | Nov. 29, 2017 | Mar. 31, 2018
11/29/2017 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Strike price (in dollars per share) |  | $ 6.46 |
Stock price (in dollars per share) |  | 6.46 |
Threshold vesting price (in dollars per share) |  | 12 |
Calculated fair value (in dollars per share) |  | $ 3.98 |
12/1/2017 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Strike price (in dollars per share) | $ 6.28 |  |
Stock price (in dollars per share) | 6.28 |  |
Threshold vesting price (in dollars per share) | 8 |  |
Calculated fair value (in dollars per share) | 3.87 |  |
12/1/2017 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Strike price (in dollars per share) | 6.28 |  |
Stock price (in dollars per share) | 6.28 |  |
Threshold vesting price (in dollars per share) | 10 |  |
Calculated fair value (in dollars per share) | $ 3.82 |  |
Employee Stock Option |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected volatility rate |  |  | 50.00%
Expected term (years) |  |  | 10 years
Stock price threshold term |  |  | 10 days
Employee Stock Option | 11/29/2017 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected term (years) |  | 10 years |
Risk free interest rate |  | 2.40% |
Employee Stock Option | 12/1/2017 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected term (years) | 10 years |  |
Risk free interest rate | 2.40% |  |
Employee Stock Option | 12/1/2017 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected term (years) | 10 years |  |
Risk free interest rate | 2.40% |  |

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Stock Price Threshold Term + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Threshold Vesting Price + References No definition available. + Details
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- Definition Per share weighted average intrinsic value of equity-based compensation awards vested. Excludes stock and unit options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. + References No definition available. + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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. + References No definition available. + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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