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Stockholders' Equity - Equity Offerings and Placements - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 11, 2020
Dec. 31, 2020
Dec. 09, 2020
Nov. 23, 2020
Dec. 31, 2019
 [1]
Apr. 30, 2019
Stockholders Equity Note [Line Items]            
Common stock, shares issued (in shares)   5,996,101 [1]     67,091 92
Common stock, par value (in dollars per share)   $ 0.01 [1]   $ 0.01 $ 0.01  
Gross proceeds from issuance of common stock   $ 230        
Canaccord Genuity L L C And Roth Capital Partner L L C            
Stockholders Equity Note [Line Items]            
Common stock, shares issued (in shares) 1,679,031          
Shares issued, price per share     $ 13.25      
Gross proceeds from issuance of common stock $ 22,247          
Underwriting discount, commission and estimated offering expenses $ 1,861          
[1] reflects, a one-for-seven hundred (1:700) reverse stock split effected on December 24, 2019.