Additional paid in capital share-based payment arrangement exercised options credited to common shares.

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Annual increase in number of shares available for issuance as percentage on outstanding shares of common stock on final day of preceding calendar year.

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Annual increase in number of shares available for issuance maximum number of common stock issued.

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Common stock capital shares initially reserved for future issuance.

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Purchase price of shares as percentage of fair market value of common stock on date of purchase.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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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 option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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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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Number of shares authorized for issuance under share-based payment arrangement.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Number of share options (or share units) exercised during the current period.

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Share-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares issued		37,109,506				37,109,506		36,902,924
Number of options exercised						203,283	266,687
Options, weighted-average exercise price						$ 3.11	$ 1.83
Aggregate proceeds from exercise of options						$ 632	$ 488
Decrease in additional paid-in capital as exercised options credited to common shares						400
Unrecognized share-based compensation expense related to unvested stock options		$ 39,800				$ 39,800
Unrecognized share-based compensation expense related to unvested stock options, weighted average period						2 years 6 months
Common Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options exercised		115,497	87,786	85,369	181,318
2020 Employee Share Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for future issuance		696,029				696,029
Annual increases in number of shares available for issuance as percentage of outstanding shares common stock on final day of preceding calendar year	1.00%
Annual increases in number of shares available for issuance maximum number of common stock issued	3,300,000
Purchase price of shares as percentage of fair market value of common stock on date of purchase	85.00%
Common stock shares issued	0	0		0		0	0
Share-based compensation expense		$ 100		$ 0		$ 100	$ 0
2020 Employee Share Purchase Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for future issuance	327,000			327,000			327,000
Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for future issuance	298,605			298,605			298,605
Option Plan \| Common Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized to be issued		4,074,135				4,074,135
2020 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for future issuance		5,794,266				5,794,266
Annual increases in number of shares available for issuance as percentage of outstanding shares common stock on final day of preceding calendar year						5.00%
2020 Equity Incentive Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for future issuance	3,807,448			3,807,448			3,807,448
Shares of common stock initially reserved for future issuance	3,600,000			3,600,000			3,600,000