Stockholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Aug. 18, 2021
Feb. 18, 2021
Feb. 16, 2021
Jul. 13, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Shareholders Equity [Line Items]              
Net proceeds from sale of common stock   $ 12,200     $ 15,849 $ 4,289  
Issuance of common stock, net of fees         $ 15,849 4,289  
Stock issued during period shares warrants exercised         428,907    
Proceeds from warrant exercises         $ 4,200    
Weighted average exercise price         $ 9.71    
Stockholders' Equity total amount         $ 25,457 $ 15,070 $ 21,086
Common Stock, shares issued         7,160,000 4,542,000  
Common Stock, shares outstanding         7,160,000 4,542,000  
Preferred Stock, shares issued         0 0  
Preferred Stock, shares outstanding         0 0  
Common Stock              
Shareholders Equity [Line Items]              
Shares issued (in shares)         2,189,000 850,000  
Issuance of common stock, net of fees         $ 2 $ 1  
Stockholders' Equity total amount         $ 7 5 $ 4
IPO [Member]              
Shareholders Equity [Line Items]              
Shares issued (in shares)     1,710,600        
Net proceeds from sale of common stock     $ 13,000        
2021 Public Offering [Member]              
Shareholders Equity [Line Items]              
Shares issued (in shares)     1,650,000        
At-The-Market Offering Agreement [Member]              
Shareholders Equity [Line Items]              
Shares issued (in shares)         1,328,800    
Public float         $ 75,000    
Net proceeds from sale of common stock         8,000    
Maximum aggregate offering price $ 10,000     $ 7,000      
Commission on aggregate gross proceeds (as a percent)       3.00%      
Stockholders' Equity total amount         $ 25,500 $ 15,100  
At-The-Market Offering Agreement [Member] | Common Stock              
Shareholders Equity [Line Items]              
Shares issued (in shares)         478,800    
Net proceeds from sale of common stock         $ 8,400    
Net proceeds         $ 3,700    
Common Stock, shares issued         7,160,164    
Common Stock, shares outstanding         7,160,164    
At-The-Market Offering Agreement [Member] | Preferred Stock              
Shareholders Equity [Line Items]              
Preferred Stock, shares issued         0    
Preferred Stock, shares outstanding         0