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Organization and Operations - Additional Information (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Apr. 27, 2023
Apr. 21, 2023
Apr. 20, 2023
$ / shares
May 29, 2015
USD ($)
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
May 01, 2023
shares
Apr. 30, 2023
shares
Dec. 31, 2021
USD ($)
Organization and Operations [Line Items]                  
Net loss         $ (13,316) $ (20,275)      
Accumulated deficit         (480,501) (467,185)      
Cash and cash equivalents         8,554 18,120      
Net cash used in operating activities         (12,851) (12,972)      
Stockholders' deficit         $ (1,348) $ 6,445     $ 10,836
Common stock, par value (in dollars per share) | $ / shares     $ 0.001   $ 0.001 $ 0.001      
Stock split conversion ratio   0.06              
Reverse stock split effective date May 01, 2023                
Common stock, shares issued (in shares) | shares         4,522,656 2,240,092 2,500,000 37,400,000  
Common stock, shares outstanding (in shares) | shares         4,522,656 2,240,092 2,500,000 37,400,000  
Preferred stock, shares authorized (in shares) | shares         5,000,000 5,000,000      
Common stock, reverse stock split, fractional shares issued | shares         0        
Stock issued during period reverse stock splits, shares | shares         1,310        
Equity Incentive Plans [Member]                  
Organization and Operations [Line Items]                  
Common stock capital shares reserved for future issuance | shares             200,000 3,000,000  
Outstanding Warrants and Options [Member]                  
Organization and Operations [Line Items]                  
Common stock capital shares reserved for future issuance | shares             100,000 2,000,000  
Minimum [Member]                  
Organization and Operations [Line Items]                  
Stock split conversion ratio     0.33            
Maximum [Member]                  
Organization and Operations [Line Items]                  
Stock split conversion ratio     0.06            
Term Loan [Member]                  
Organization and Operations [Line Items]                  
Long term debt outstanding threshold amount         $ 800        
Fees amount associated with loan       $ 3,200 $ 3,200        
Maturity date       May 01, 2021 Jun. 01, 2024        
Term Loan [Member] | Maximum [Member]                  
Organization and Operations [Line Items]                  
Long term debt outstanding threshold amount         $ 800