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Share-based Compensation - Additional information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 0.4	$ 0.4
Unvested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value	$ 11.00
2019 Equity Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate shares of common stock were authorized	1,705,028
Common shares were available for future grants	1,411,095
Weighted average grant-date fair value	$ 11.00
2019 Equity Incentive Plans \| Options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	1 year
2019 Equity Incentive Plans \| Options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	4 years
2019 Equity Incentive Plans \| Unvested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value			$ 11.00
Fair value ,vested	$ 0.1
2019 Equity Incentive Plans \| Unvested Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	10 years