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Stock-based Compensation - Summary of Restricted Common Stock (Details) - Restricted Common Stock - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Shares
Number of Shares, Unvested, beginning balance	994,838	1,917,848
Number of Shares, Vested	(726,659)	(866,037)
Number of Shares, Forfeited	(81,754)	(56,973)
Number of Shares, Unvested, ending balance	186,425	994,838
Weighted-average grant-date fair value
Weighted Average Grant Date Fair Value per Share, Unvested, beginning balance	$ 6.95	$ 6.95
Weighted Average Grant Date Fair Value per Share, Vested	6.95	6.95
Weighted Average Grant Date Fair Value per Share, Forfeited	6.95	6.95
Weighted Average Grant Date Fair Value per Share, Unvested, ending balanc	$ 6.95	$ 6.95

X

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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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- 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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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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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- 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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