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Equity - Additional Information (Details)
 1 Months Ended 3 Months Ended
Nov. 21, 2022
USD ($)
$ / shares
shares
Nov. 16, 2022
$ / shares
shares
Mar. 07, 2022
USD ($)
shares
Nov. 30, 2021
USD ($)
Mar. 31, 2023
USD ($)
Facility
$ / shares
shares
Mar. 31, 2022
USD ($)
Class of Stock [Line Items]            
Proceeds from the sale of common shares           $ 1,599,000
Stock issuable per day, number of shares         $ (61,000) 1,417,000
Warrants, expires period         Feb. 23, 2028  
Perceptive Term Loan Facility            
Class of Stock [Line Items]            
Proceeds from the sale of common shares $ 40,600,000          
Public offering price per share of common stock | $ / shares $ 1.15 $ 1.15        
Warrants, expires period Nov. 21, 2032          
Warrant, exercise price | $ / shares   $ 1.0648        
Series G Preferred Stock | 2018 Notes            
Class of Stock [Line Items]            
Warrant issued to purchase shares | shares         613,333  
Warrant, exercise price | $ / shares         $ 0.75  
Maximum            
Class of Stock [Line Items]            
Stock issuable per day, number of shares       $ 50,000,000.0    
Maximum | Perceptive Term Loan Facility            
Class of Stock [Line Items]            
Warrant issued to purchase shares | shares 5,000,000 5,000,000        
Tranche A Loan | Perceptive Term Loan Facility            
Class of Stock [Line Items]            
Warrant, exercise price | $ / shares $ 1.0648          
Equity Financing Programs            
Class of Stock [Line Items]            
Number of facility | Facility         2  
Equity Financing Programs | Lincoln Park            
Class of Stock [Line Items]            
Common stock issuable, committed to purchase     $ 600,000      
Diligence expenses and legal fees     $ 129,000      
Purchase agreement term     36 months      
Stock issuable per day, number of shares | shares     50,000      
Shares issued or issuable, threshold limit description     Under applicable rules of the NASDAQ Global Market, in no event may the Company issue or sell to Lincoln Park under the Purchase Agreement more than 19.99% of the shares of the Company’s common stock outstanding immediately prior to the execution of the Purchase Agreement (the Exchange Cap), unless (i) the Company obtains stockholder approval to issue shares of common stock in excess of the Exchange Cap or (ii) the average price of all applicable sales of common stock to Lincoln Park under the Purchase Agreement equals or exceeds $2.20 per share, such that issuances and sales of the common stock to Lincoln Park under the Purchase Agreement would be exempt from the Exchange Cap limitation under applicable NASDAQ rules.      
Maximum percentage of common stock allowed to purchase by counterparty     9.99%      
Shares issued as commitment fee | shares     184,275      
Commitment shares issuable on conditional basis | shares     61,425      
Adjustments to additional paid-in capital deferred offering costs         $ 0 $ 18,000
Deferred offering costs     $ 729,000   $ 654,000  
Equity Financing Programs | Lincoln Park | Maximum            
Class of Stock [Line Items]            
Common stock issuable, committed to purchase     $ 50,000,000.0      
Stock issuable per day, number of shares | shares     100,000      
Stock issuable per day, value     $ 1,500,000      
Shares issued as commitment fee, value     $ 20,000,000.0      
IPO            
Class of Stock [Line Items]            
Warrant issued to purchase shares | shares         103,326  
Warrant, exercise price | $ / shares         $ 4.46  
Expected Term | Perceptive Term Loan Facility            
Class of Stock [Line Items]            
Warrants expected term 10 years          
Volatility | Perceptive Term Loan Facility            
Class of Stock [Line Items]            
Warrants and rights outstanding, measurement input 81.3          
Dividend Yield | Perceptive Term Loan Facility            
Class of Stock [Line Items]            
Warrants and rights outstanding, measurement input 0          
Risk-Free Interest Rate | Perceptive Term Loan Facility            
Class of Stock [Line Items]            
Warrants and rights outstanding, measurement input 3.67          
At-The-Market Facility | Equity Financing Programs            
Class of Stock [Line Items]            
Line of Credit Facility, Remaining Borrowing Capacity         $ 29,500,000  
LPC Facility | Equity Financing Programs            
Class of Stock [Line Items]            
Line of Credit Facility, Remaining Borrowing Capacity         $ 46,900,000