Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION - Narrative (Details)

v3.22.1
STOCK-BASED COMPENSATION - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Mar. 30, 2022
Mar. 31, 2022
Jun. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Jun. 11, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost       $ 2,100    
Unrecognized weighted average period       1 year 1 month 2 days    
Aggregate intrinsic value, exercised in period       $ 0 $ 100  
Subsequent Event            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock option cancelled (in shares)   9,000,000        
Increase (decrease) in number of shares authorized, (8,000,000)          
Equity Option            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock option cancelled (in shares)       1,960,000    
Stock option, maximum term       10 years    
Granted (in USD per share)       $ 0.54    
Unvested options granted (in shares)       6,900,000    
Options outstanding (in shares)       30,163,000 25,225,000  
Stock Option Modification            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock based compensation expense       $ 41 $ 159  
Granted (in USD 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 outstanding (in shares)       5,000,000    
Unvested stock options (in shares)       8,000,000    
Operating Income (Loss)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock based compensation expense       $ 3,200 $ 3,900  
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)       38,976,000    
Shares unissued and reserved for issuance (in shares)       5,225,876    
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
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