Share-Based Compensation - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
2016 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense	$ 14	$ 719
Issuance of common shares under employee stock purchase plan, shares	31,908
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense related to unvested stock options	$ 8,100
Expected to be recognized over a weighted average period	3 years 2 months 12 days
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected to be recognized over a weighted average period	3 years 6 months
Share-based compensation expense	$ 341	$ 719
Unrecognized compensation expense related to the RSUs	$ 4,600

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

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