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Stockholders' Equity - Restricted Stock Units Schedule (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted stock units, nonvested beginning of period	970,349	366,812
Restricted stock units, nonvested grants in period	134,800	930,145
Restricted stock units, nonvested vested in period	(673,201)	(172,441)
Restricted stock units, nonvested forfeited in period	(3,336)	(154,167)
Restricted stock units, nonvested ending of period	428,612	970,349	366,812
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Restricted stock units, nonvested weighted average grant date fair value	$ 0.39	$ 0.42
Restricted stock units, nonvested grants in period, weighted average grant date fair value	3.53	0.37
Restricted stock units , nonvested vested in period, weighted average grant date fair value	0.73	0.41
Restricted stock units, nonvested forfeited in period, weighted average grant date fair value	1.46	0.30
Restricted stock units, nonvested weighted average grant date fair value	$ 0.84	$ 0.39	$ 0.42
Restricted stock units, nonvested weighted average remaining contractual terms	1 year 4 months 24 days	1 year 2 months 12 days	3 years 2 months 12 days

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)
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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 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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- 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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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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- 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

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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