Stock-Based Compensation - Restricted Stock Units (Details) - Restricted stock units	9 Months Ended
Sep. 30, 2023 $ / shares shares
2023 Inducement Plan
Number of Shares
Outstanding and Unvested, beginning balance (in shares) \| shares	0
Restricted stock units granted (in shares) \| shares	363,990
Restricted stock units vested (in shares) \| shares	0
Restricted stock units forfeited (in shares) \| shares	0
Outstanding and Unvested, ending balance (in shares) \| shares	363,990
Per Share Weighted- Average Fair Value
Outstanding and Unvested, beginning balance (in usd per share) \| $ / shares	$ 0
Restricted stock units granted (in usd per share) \| $ / shares	10.66
Restricted stock units vested (in usd per share) \| $ / shares	0
Restricted stock units forfeited (in usd per share) \| $ / shares	0
Outstanding and Unvested, ending balance (in usd per share) \| $ / shares	$ 10.66
2015 Plan
Number of Shares
Outstanding and Unvested, beginning balance (in shares) \| shares	2,034,574
Restricted stock units granted (in shares) \| shares	2,888,793
Restricted stock units vested (in shares) \| shares	(403,672)
Restricted stock units forfeited (in shares) \| shares	(780,810)
Outstanding and Unvested, ending balance (in shares) \| shares	3,738,885
Per Share Weighted- Average Fair Value
Outstanding and Unvested, beginning balance (in usd per share) \| $ / shares	$ 61.65
Restricted stock units granted (in usd per share) \| $ / shares	7.25
Restricted stock units vested (in usd per share) \| $ / shares	87.17
Restricted stock units forfeited (in usd per share) \| $ / shares	27.77
Outstanding and Unvested, ending balance (in usd per share) \| $ / shares	$ 23.95

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

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- Definition

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 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).

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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 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

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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- Definition

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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- Definition

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

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- Definition

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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