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Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award Additional General Disclosures [Abstract]
Option Shares Outstanding, Outstanding - Beginning Balance	321,516	321,516	321,516	321,516
Option Shares Outstanding, Grants	13,454
Option Shares Outstanding, Outstanding - Ending Balance	334,970	321,516	321,516	334,970
Option Shares Outstanding, Exercisable	102,489	102,489	38,186	102,489
Weighted Average Exercise Price, Outstanding - Beginning Balance	$ 9.77	$ 9.77	$ 9.77	$ 9.77
Weighted Average Exercise Price, Granted	13.09
Weighted Average Exercise Price, Outstanding - Ending Balance	9.90	9.77	9.77	9.90
Weighted Average Exercise Price, Exercisable	$ 10.28	$ 10.28	$ 11.14	$ 10.28
Weighted Average Remaining Life (Years), Outstanding	8 years 18 days	7 years 11 months 12 days	8 years 2 months 12 days
Weighted Average Remaining Life (Years), Exercisable	7 years 9 months 29 days	8 years 29 days	8 years
Aggregate Intrinsic Value (in thousands), Outstanding	$ 842	$ 521	$ 464	$ 842
Aggregate Intrinsic Value (in thousands), Exercisable	$ 216	$ 104		$ 216

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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