Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION - Narrative (Details)

v3.23.1
STOCK-BASED COMPENSATION - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 30, 2022
Mar. 31, 2022
Jun. 30, 2020
Mar. 29, 2023
Dec. 31, 2022
Dec. 31, 2021
Jan. 01, 2023
Jun. 11, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Unrecognized compensation cost         $ 200      
Unrecognized weighted average period         5 months 19 days      
Aggregate intrinsic value, exercised in period           $ 0    
Subsequent Event                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Issued, weighted average exercise price (in dollars per share)       $ 0.04        
Equity Option                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock option cancelled (in shares)         11,332,000      
Stock option, maximum term         10 years      
Granted (in dollars per share)         $ 0.04      
Unvested options granted (in shares)         1,000,000      
Options outstanding (in shares)         19,831,000 30,163,000    
Weighted average exercise price (in dollars per share)         $ 0.46 $ 0.49    
Exercised (in shares)         0      
Equity Option | Subsequent Event                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Issued (in shares)       7,450,000        
Stock Option Modification                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock based compensation expense         $ 6 $ 41    
Granted (in dollars per share)     $ 0.66          
Unvested options granted (in shares)     2,130,000          
Unrecognized compensation cost     $ 200          
Options Outside the Amended 2013 Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Options vested (in shares)         4,250,000      
Unvested stock options (in shares)         6,750,000      
Options outstanding (in shares)         18,050,000      
Weighted average exercise price (in dollars per share)         $ 0.40      
Operating Income (Loss)                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock based compensation expense         $ 1,000 $ 3,200    
Minimum | Equity Option                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Award vesting period         2 years      
Maximum | Equity Option                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Award vesting period         4 years      
Amended 2013 Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Shares authorized under plan (in shares)         30,976,000      
Shares unissued and reserved for issuance (in shares)         6,807,781      
Annual increase in shares available for issuance as percent of total shares outstanding percentage               4.00%
Annual increase to shares authorized for issuance under the Plan (in shares)               4,000,000
Stock option cancelled (in shares)   9,000,000            
Increase (decrease) in number of shares authorized, (8,000,000)              
Amended 2013 Plan | Subsequent Event                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Annual increase to shares authorized for issuance under the Plan (in shares)             6,084,192,000  
Amended 2013 Plan | Equity Option                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock option, maximum term         10 years      
Amended 2013 Plan | Minimum | Equity Option                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Award vesting period         2 years      
Amended 2013 Plan | Maximum | Equity Option                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Award vesting period         4 years