Aggregate number of common shares reserved for future issuance.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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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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Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions			12 Months Ended
	Jan. 01, 2022	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost relating to unvested restricted stock awards			$ 12.3
Number of common stock reserved for issuance	4,210
Weighted average grant date fair value for options granted			$ 5.01
Unrecognized compensation cost relating to outstanding options			$ 7.1
2020 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of common stock reserved for issuance					2,900
Outstanding number of shares preceding percentage	4.00%		4.00%
Number of common stock reserved for issuance	4,050		156
Stock options, vesting period			4 years
Outstanding, Weighted Average Remaining Contractual Life, Ending Balance			10 years
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant-date fair value for unvested restricted stock		$ 2.46	$ 1.76	$ 2.46		$ 2.04
Share awards granted			0	1
Unrecognized compensation cost relating to unvested restricted stock awards			$ 0.8
Unvested stock expected to be recognized over a weighted-average period			1 year 9 months 18 days
Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested stock expected to be recognized over a weighted-average period			2 years 9 months 18 days
Stock Option \| 2020 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Weighted Average Remaining Contractual Life, Ending Balance		9 years 8 months 8 days	8 years 11 months 23 days
Restricted stock units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost relating to unvested restricted stock awards			$ 4.4
Unvested stock expected to be recognized over a weighted-average period			3 years 10 months 24 days
Restricted stock units \| 2020 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share awards granted			1,200