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Stock-Based Compensation and Stock Options (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Apr. 26, 2024
$ / shares
shares
Jun. 01, 2021
employee
$ / shares
shares
May 29, 2020
employee
$ / shares
shares
Jun. 30, 2024
USD ($)
$ / shares
shares
Mar. 31, 2024
shares
Mar. 31, 2023
$ / shares
shares
Jun. 30, 2022
extension
$ / shares
shares
Mar. 31, 2022
$ / shares
shares
Sep. 30, 2019
employee
$ / shares
shares
Jun. 30, 2024
USD ($)
shares
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
shares
Jun. 30, 2023
USD ($)
Dec. 31, 2023
shares
Dec. 31, 2022
USD ($)
shares
Dec. 31, 2021
shares
Dec. 31, 2020
shares
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)       100,000                          
Exercise price (in dollars per share) | $ / shares       $ 7.87                          
June 2024                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Options outstanding and unvested (in shares)       100,000           100,000   100,000          
March 2024                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)         600,000                        
Number of options approved for grant by Board of Directors (in shares) 600,000                                
Stock Options                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Number of key employees | employee   1                              
Share purchase amount of options granted (in shares)   50,000                              
Exercise price (in dollars per share) | $ / shares   $ 9.44                              
Options outstanding (in shares)       50,000           50,000   50,000          
Total stock-based compensation expense (reversal) | $                   $ 36 $ 36 $ 72 $ 72        
Options vested (in shares)                       37,500          
Unrecognized stock-based compensation expense | $       $ 72           72   $ 72          
Expected duration for recognition of stock based compensation expense                       6 months          
Vesting percentage 25.00%                                
Vesting period 6 months                                
Award vesting period 2 years                                
Stock Options | June 2024                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Total stock-based compensation expense (reversal) | $                   8   $ 8          
Unrecognized stock-based compensation expense | $       $ 394           $ 394   $ 394          
Expected duration for recognition of stock based compensation expense                       4 years          
Stock Options | September 2019 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)                 300,000                
Exercise price (in dollars per share) | $ / shares                 $ 10.79                
Options vest (in shares)                 75,000                
Stock Options | May 2020 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)     100,000                         88,917 54,258
Shares issued upon exercise of options (in shares)     300,000                            
Options forfeited (in shares)                               125,000 100,000
Share-based compensation options were exercised (in shares)                               150,000  
Stock Options | May 2019 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Options forfeited (in shares)                             50,000    
Share-based compensation arrangement by share-based payment award, options, vested and exercisable in future periods, number of shares (in shares)                             25,000    
Stock Options | March 2022 plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Total stock-based compensation expense (reversal) | $                     216   433        
Vesting period               6 months                  
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number (in shares)       600,000           600,000   600,000          
Stock Options | June 2022 plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Total stock-based compensation expense (reversal) | $                     30   60   $ 0    
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number (in shares)       100,000           100,000   100,000          
Number of extensions | extension             3                    
Performance target extension period                       3 months          
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested, number (in shares)                       33,333     0    
Stock Options | March 2023                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)           200,000           200,000          
Exercise price (in dollars per share) | $ / shares           $ 4.96                      
Total stock-based compensation expense (reversal) | $                   $ 35 52 $ 70 70        
Options vested (in shares)                       75,000          
Unrecognized stock-based compensation expense | $       $ 348           348   $ 348          
Expected duration for recognition of stock based compensation expense                       2 years 6 months          
Vesting percentage           12.50%                      
Vesting period           6 months                      
Award vesting period           4 years                      
Stock Options | March 2024                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)                       600,000          
Exercise price (in dollars per share) | $ / shares $ 8.58                                
Total stock-based compensation expense (reversal) | $                   609   $ 609          
Options vested (in shares)                       150,000          
Unrecognized stock-based compensation expense | $       $ 1,800           $ 1,800   $ 1,800          
Expected duration for recognition of stock based compensation expense                       1 year 6 months          
Employee Stock | September 2019 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)                           16,619      
Share-based compensation options were exercised (in shares)                           50,000      
Employee Stock | May 2020 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)                       26,871   18,098      
Share-based compensation arrangement by share-based payment award, options, vested and exercisable in future periods, number of shares (in shares)                                 75,000
Share-based compensation options were exercised (in shares)       75,000           75,000   75,000   50,000 0    
Employee Stock | March 2022 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)               600,000                  
Exercise price (in dollars per share) | $ / shares               $ 8.14                  
Vesting percentage               25.00%                  
Award vesting period               2 years                  
Employee Stock | June 2022 plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)             100,000                    
Exercise price (in dollars per share) | $ / shares             $ 6.78                    
Unrecognized stock-based compensation expense | $       $ 239           $ 239   $ 239          
Expected duration for recognition of stock based compensation expense                       1 year          
Key Employees | Stock Options | September 2019 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Number of key employees | employee                 6                
Share purchase amount of options granted (in shares)                 50,000                
Key Employees | Stock Options | May 2020 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Number of key employees | employee     2                            
Share purchase amount of options granted (in shares)     200,000                         24,474  
Exercise price (in dollars per share) | $ / shares     $ 3.49                            
Share-based compensation options were exercised (in shares)                               50,000  
Options outstanding (in shares)       25,000           25,000   25,000          
Total stock-based compensation expense (reversal) | $                     $ 25 $ 25 $ 50        
Key Employees | Stock Options | May 2019 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)                             4,676    
Mr. Ralph Bartel | Stock Options | May 2020 Plan                                  
Share-based Compensation Arrangement by Share-based Payment Award                                  
Share purchase amount of options granted (in shares)     800,000                     121,307   390,809  
Share-based compensation options were exercised (in shares)                           200,000   600,000