Quarterly report pursuant to Section 13 or 15(d)

Redeemable Preferred Stock and Stockholders' Equity - Additional Information (Detail)

v3.23.1
Redeemable Preferred Stock and Stockholders' Equity - Additional Information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Jan. 09, 2023
Jun. 27, 2022
Jul. 23, 2020
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Mar. 01, 2022
Mar. 06, 2018
Temporary Equity And Stockholders Equity [Line Items]                    
Temporary equity preferred stock, shares authorized       1,000,000            
Common stock, shares authorized       180,000,000   180,000,000        
Common stock, shares issued       26,329,000   7,723,000        
Common stock value       $ 26,000   $ 8,000        
Proceeds from the exercise of common stock warrants       $ 14,000 $ 0          
Common stock, par value       $ 0.001   $ 0.001        
Series G Preferred stock, shares authorized       1,000,000            
Additional paid-in-capital       $ 310,802,000   $ 301,782,000        
Compensation expense related to stock options       700,000 200,000          
Total unrecognized compensation expense       1,000,000.0 $ 800,000          
Accrued liabilities       7,977,000   9,210,000        
Other liabilities       $ 78,000   362,000        
Unrecognized share based compensation expense to be recognized over weighted-average period       10 months 24 days            
Stock Compensation Liability       $ 200,000            
Common stock offered       2,700,000 900,000          
Allocated Share-based Compensation Expense       $ 691,000 $ 209,000          
July 2020 Warrants                    
Temporary Equity And Stockholders Equity [Line Items]                    
Proceeds from issuance of warrants       15,300,000            
Warrants issued in connection with debt instruments       $ 15,300,000            
July 2020 Warrants | Rights Offering                    
Temporary Equity And Stockholders Equity [Line Items]                    
Allocated to the warrants based upon fair values     $ 15,300,000              
June 2022 Warrants [Member]                    
Temporary Equity And Stockholders Equity [Line Items]                    
Weighted average exercise price of warrants   $ 0.001                
Sale of common stock and pre-funded warrants, net of fees ,shares   678,745                
Proceeds from offering   $ 6,500,000                
Combined purchase price of share and warrant   $ 4.625                
January 2023 Warrants                    
Temporary Equity And Stockholders Equity [Line Items]                    
Equity raise of gross proceeds $ 8,500,000                  
Warrant issued 11,403,571                  
Weighted average exercise price of warrants $ 0.01                  
Common stock, par value       $ 0.001            
Sale of common stock and pre-funded warrants, net of fees ,shares 17,167,855                  
Proceeds from offering $ 9,900,000                  
Combined purchase price of share and warrant $ 0.35                  
January 2023 Prefunded Warrants                    
Temporary Equity And Stockholders Equity [Line Items]                    
Combined purchase price of share and warrant $ 0.34                  
June 2022 Pre-Funded Warrants [Member]                    
Temporary Equity And Stockholders Equity [Line Items]                    
Equity raise of gross proceeds   $ 5,600,000                
Warrant issued                   726,660
Combined purchase price of share and warrant   $ 4.624                
Series F Convertible Preferred Stock                    
Temporary Equity And Stockholders Equity [Line Items]                    
Conversion price     $ 10.00              
Series F Convertible Preferred Stock                    
Temporary Equity And Stockholders Equity [Line Items]                    
Temporary equity preferred stock, shares authorized     18,000              
Common stock value     $ 1,000              
Proceeds from issuance of warrants       $ 2,700,000            
Proceeds of common stock and warrants     18,000,000.0              
Warrants issued in connection with debt instruments       $ 2,700,000            
Deemed dividend on convertible preferred stock     $ 2,700,000     $ 200,000 $ 500,000      
Series G Preferred stock, shares authorized     18,000              
Conversion of preferred stock into common stock     1,800,000              
Convertible preferred stock, shares outstanding       0   0        
Preferred stock par value     $ 0.001              
Series F Convertible Preferred Stock | Rights Offering                    
Temporary Equity And Stockholders Equity [Line Items]                    
Proceeds allocated to the warrants based upon fair values     $ 2,700,000              
Deemed dividend on convertible preferred stock               $ 14,700,000    
Series G Redeemable Preferred Stock                    
Temporary Equity And Stockholders Equity [Line Items]                    
Preferred stock, par value                 $ 0.001  
Private Placement | June 2022 Warrants [Member]                    
Temporary Equity And Stockholders Equity [Line Items]                    
Warrant issued   1,405,405                
2002 Stock Incentive Plan                    
Temporary Equity And Stockholders Equity [Line Items]                    
Common Stock Issued Pursuant To Options Exercised       41,000            
Common stock authorized for issuance       124,400            
Common stock issued pursuant to options exercised       41,000            
Options and restricted stock units outstanding       22,000            
Options available for future grants       0            
2018 Long-Term Incentive Plan                    
Temporary Equity And Stockholders Equity [Line Items]                    
Increase in Number of Units Available for Issuance       100,000            
Options and restricted stock units outstanding       1,000,000.0            
2018 Long-Term Incentive Plan | Common Stock                    
Temporary Equity And Stockholders Equity [Line Items]                    
Common stock authorized for issuance       1,500,000            
Phantom Share Units (PSUs)                    
Temporary Equity And Stockholders Equity [Line Items]                    
Additional paid-in-capital       $ 200,000   $ 100,000        
Other liabilities       300,000   $ 300,000        
Allocated Share-based Compensation Expense       100,000 100,000          
Shares issued in period           31,000 402,000      
Stock Appreciation Rights (SARs)                    
Temporary Equity And Stockholders Equity [Line Items]                    
Additional paid-in-capital         500,000          
Accrued liabilities         $ 200,000          
Allocated Share-based Compensation Expense       $ 0            
Shares issued in period             39,000      
June 2020 Warrants                    
Temporary Equity And Stockholders Equity [Line Items]                    
Common stock, shares issued     100,000              
June 2020 Warrants | Series F Convertible Preferred Stock                    
Temporary Equity And Stockholders Equity [Line Items]                    
Warrant issued     45,000,000