Stock-Based Compensation - Restricted Stock Awards (Details) - Restricted Stock - $ / shares	3 Months Ended	9 Months Ended
Mar. 31, 2020	Sep. 30, 2019
Number of Restricted Stock Awards
Unvested, beginning of period (in shares)	729,500
Vested (in shares)	(94,110)	(79,231)
Cancelled for Tax Withholding (in shares)	(41,677)
Forfeited (in shares)	(93,713)
Unvested, end of period (in shares)	500,000
Weighted-Average Grant Date Fair Value (per Share)
Unvested, beginning of period (in dollars per share)	$ 5.23
Vested (in dollars per share)	4.14
Cancelled for Tax Withholding (in dollars per share)	4.14
Forfeited (in dollars per share)	4.14
Unvested, end of period (in dollars per share)	$ 5.73

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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-Name Accounting Standards Codification
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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Weighted average grant-date fair value of non-vested options forfeited.

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Number of shares related to Restricted Stock Award forfeited during the period.

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