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Stockholders' Equity - Common Stock Issuances - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
May 05, 2020
Feb. 28, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Stockholders Equity Note [Line Items]          
Proceeds on Public Offering (1) [1]       $ 39,764  
Compensation expense for issuance of restricted stock (in shares)       72,976 22,963
Common stock grant date fair value       $ 635 $ 229
Gross proceeds from issuance of common stock     $ 2,458    
Exercise of pre-funded Series D Warrants (in shares)       6,000  
Stock issued during period shares associated other warrants       185,803  
Proceeds from exercise of warrants     $ 2,458 $ 1,858  
Stock Issued During Period Shares Associated With Warrants     465,173    
Issue Of Unregistered Common Stock For Advisory Services   2,636      
Series F warrants [Member]          
Stockholders Equity Note [Line Items]          
Warrants issued to purchase of common stock 2,224,900        
Warrant exercise price $ 10.00        
Pre-Funded Warrants [Member]          
Stockholders Equity Note [Line Items]          
Warrants issued to purchase of common stock 377,000   215,000    
Warrant exercise price     $ 0.01    
Common Stock [Member]          
Stockholders Equity Note [Line Items]          
Shares issued in public offering     515,000 77,644  
Proceeds on Public Offering (1) $ 21,996        
Underwriting discounts and other offering expenses $ 2,618        
Common Stock [Member] | IPO [Member]          
Stockholders Equity Note [Line Items]          
Shares issued in public offering 1,823,000        
2019 Warrants [Member]          
Stockholders Equity Note [Line Items]          
Warrant exercise price $ 10.00   $ 10.00    
[1] Includes gross proceeds of $44,243, less total issuance costs of $4,479.