Calculated total shareholders return (TSR), description.

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- Definition

Share based compensation arrangement by share based payment award award vesting earnings per share trigger.

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- Definition

Share based compensation arrangement by share-based payment award award vesting threshold consecutive quarters.

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- Definition

Share based compensation arrangement by share based payment award shares vested as percentage of maximum.

+ References

No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
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- Definition

Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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.

+ References

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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

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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.

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

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- Definition

Number of shares issued under share-based payment arrangement.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Employee Benefit Plans (Narratives) (Details)		3 Months Ended		12 Months Ended
Employee Benefit Plans (Narratives) (Details)	Jul. 27, 2020 shares	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2019 Quarter shares	Jun. 30, 2018 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted (in dollars per share) \| $ / shares			$ 3.52
Granted		5,306,000
Granted \| $ / shares		$ 4.71
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting percentage		The RSU's granted under the 2013 plan vest over a period of time, generally one-to-three years, and are subject to participant's continued service to the Company.
MSU
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Calculation of total shareholder return (TSR), description		Total shareholder return is calculated based on the average closing price for the 30-trading days prior to the beginning and end of the performance periods. Performance is measured based on three periods, with the ability for up to one-third of target shares to vest after years 1 and 2 and the ability for up to the maximum of the full award to vest based on the full 3-year TSR less any shares vested based on 1 and 2 year periods.
Granted \| $ / shares		$ 5.32
Volatility		69.00%
Risk-free interest rate		0.18%
Dividend yield		0.00%
Expected life		3 years
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance stock unit vesting, consecutive quarters \| Quarter				2
Share-based compensation expense \| $		$ 0	$ 0
Performance Shares \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance stock unit vesting, earnings per share \| $ / shares		$ 0.09
Executive Officers and Directors \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted		1,350,000
Executive Officer Member \| MSU
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	475,000
Shares vested, Maximum	150.00%
Executive Officers And Other Vice President Level Employee \| Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted				600,000	600,000
2013 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted		0
2014 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted (in dollars per share) \| $ / shares		$ 2.23	$ 2.02
Shares issued under stock purchase plan		1.5	1.2