Summary of Significant Accounting Policies - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Total property and equipment, gross	$ 309	$ 309
Less: accumulated depreciation	(232)	(179)
Total property and equipment, net	77	130	[1]
Computers
Property Plant And Equipment [Line Items]
Total property and equipment, gross	70	70
Office Furniture and Equipment
Property Plant And Equipment [Line Items]
Total property and equipment, gross	134	134
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment, gross	$ 105	$ 105

[1] The consolidated balance sheet as of December 31, 2020 is derived from the consolidated financial statements as of that date and was retroactively adjusted, including shares and per share amounts, as a result of the Reorganization and Reverse Stock Split. See Note 3 to the consolidated financial statements for additional details.