Annual report pursuant to Section 13 and 15(d)

Business and Summary of Significant Accounting Policies - Schedule of Recently Adopted Accounting Pronouncement (Details)

v3.22.4
Business and Summary of Significant Accounting Policies - Schedule of Recently Adopted Accounting Pronouncement (Details) - USD ($)
Dec. 31, 2022
Jan. 01, 2022
Dec. 31, 2021
Dec. 31, 2020
Business and Summary of Significant Accounting Policies        
Property, plant and equipment, net $ 174,000   $ 162,000  
Total assets 11,452,000   19,391,000  
Total liabilities 13,448,000   3,014,000  
Accumulated deficit (228,321,000)   (212,203,000)  
Stockholders' equity (1,996,000)   16,377,000 $ 7,316,000
Total liabilities and stockholders' equity $ 11,452,000   $ 19,391,000  
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued Liabilities, Current Accrued Liabilities, Current    
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other Liabilities, Noncurrent Other Liabilities, Noncurrent Other Liabilities, Noncurrent  
Cumulative Effect, Period of Adoption, Adjustment        
Business and Summary of Significant Accounting Policies        
Stockholders' equity $ 33,000      
Accounting Standards Update 2016-02 Leases        
Business and Summary of Significant Accounting Policies        
Operating lease right-of-use assets   $ 212,000    
Property, plant and equipment, net     $ 162,000  
Total assets     19,391,000  
Deferred rent and lease incentive     58,000  
Total liabilities     3,014,000  
Accumulated deficit     (212,203,000)  
Stockholders' equity     16,377,000  
Total liabilities and stockholders' equity     $ 19,391,000  
Accounting Standards Update 2016-02 Leases | Cumulative Effect, Period of Adoption, Adjusted Balance        
Business and Summary of Significant Accounting Policies        
Operating lease right-of-use assets   212,000    
Property, plant and equipment, net   252,000    
Total assets   19,693,000    
Operating lease liabilities, current   148,000    
Operating lease liabilities, non-current   179,000    
Total liabilities   3,283,000    
Accumulated deficit   (212,170,000)    
Stockholders' equity   16,410,000    
Total liabilities and stockholders' equity   19,693,000    
Accounting Standards Update 2016-02 Leases | Cumulative Effect, Period of Adoption, Adjustment        
Business and Summary of Significant Accounting Policies        
Operating lease right-of-use assets   212,000    
Property, plant and equipment, net   90,000    
Total assets   302,000    
Operating lease liabilities, current   148,000    
Operating lease liabilities, non-current   179,000    
Deferred rent and lease incentive   (58,000)    
Total liabilities   269,000    
Accumulated deficit   33,000    
Stockholders' equity   33,000    
Total liabilities and stockholders' equity   $ 302,000