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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 |
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Jun. 01, 2021 employee $ / shares shares | May 29, 2020 employee $ / shares shares | Apr. 30, 2022 shares | Sep. 30, 2019 $ / shares shares | Oct. 31, 2017 $ / shares shares | Sep. 30, 2015 $ / shares shares | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Jun. 30, 2020 shares | Dec. 31, 2021 $ / shares shares | Dec. 31, 2020 shares | Dec. 31, 2019 shares | Mar. 31, 2020 employee
Stock Options | September 2015 Plan | Mr. Ralph Bartel |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  |  |  |  |  | 400,000 |  |  |  |  |  |  |
Exercise price of employee option shares of common stock (in dollars per share) | $ / shares |  |  |  |  |  | $ 8.07 |  |  |  |  |  |  |
Stock Options | October 2017 Plan | Mr. Ralph Bartel |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  |  |  |  | 400,000 |  |  |  |  |  |  | 150,000 |
Exercise price of employee option shares of common stock (in dollars per share) | $ / shares |  |  |  |  | $ 6.95 |  |  |  |  |  |  |  |
Options exercised (in shares) |  |  |  |  |  |  |  |  |  |  |  | 250,000 |
Stock Options | September 2019 Plan |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  |  |  | 300,000 |  |  |  |  |  |  |  |  |
Exercise price of employee option shares of common stock (in dollars per share) | $ / shares |  |  |  | $ 10.79 |  |  |  |  |  |  |  |  |
Options vested and become exercisable annually (in shares) |  |  |  | 75,000 |  |  |  |  |  |  |  |  |
Total stock-based compensation expense (reversal) | $ |  |  |  |  |  |  | $ 71 | $ 55 |  |  |  |  |
Unrecognized stock-based compensation expense | $ |  |  |  |  |  |  | $ 137 |  |  |  |  |  |
Expected duration for recognition of stock based compensation expense |  |  |  |  |  |  | 1 year 4 months 24 days |  |  |  |  |  |
Stock Options | September 2019 Plan | Mr. Ralph Bartel |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of employee option shares of common stock (in dollars per share) | $ / shares |  |  |  | $ 10.79 |  |  |  |  |  |  |  |  |
Options vested and become exercisable annually (in shares) |  |  |  | 400,000 |  |  |  |  |  |  |  |  |
Stock Options | September 2019 Plan | Key Employees |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  |  |  | 50,000 |  |  |  |  |  |  |  |  |
Number of key employees | employee |  |  |  |  |  |  |  |  |  |  |  |  | 6
Stock Options | May 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  | 100,000 |  |  |  |  |  |  |  | 88,917 | 54,258 |  |
Options forfeited (in shares) |  |  |  |  |  |  |  |  |  | 125,000 | 100,000 |  |
Options vested and exercisable in future periods (in shares) |  |  |  |  |  |  |  |  |  | 150,000 | 75,000 |  |
Share price (in dollars per share) | $ / shares |  | $ 3.49 |  |  |  |  |  |  |  |  |  |  |
Shares issued upon exercise of options (in shares) |  | 300,000 |  |  |  |  |  |  |  |  |  |  |
Stock Options | May 2020 Plan | Mr. Ralph Bartel |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  | 800,000 |  |  |  |  |  |  | 1,900,000 |  |  |  |
Exercise price of employee option shares of common stock (in dollars per share) | $ / shares |  | $ 3.49 |  |  |  |  |  |  |  |  |  |  |
Total stock-based compensation expense (reversal) | $ |  |  |  |  |  |  | $ 385 | 385 |  |  |  |  |
Stock Options | May 2020 Plan | Key Employees |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  | 200,000 |  |  |  |  |  |  |  | 24,474 |  |  |
Exercise price of employee option shares of common stock (in dollars per share) | $ / shares |  | $ 3.49 |  |  |  |  |  |  |  |  |  |  |
Total stock-based compensation expense (reversal) | $ |  |  |  |  |  |  | 49 | $ 59 |  |  |  |  |
Share-based compensation options were exercised (in shares) |  |  |  |  |  |  |  |  |  | 50,000 |  |  |
Unrecognized stock-based compensation expense | $ |  |  |  |  |  |  | $ 393 |  |  |  |  |  |
Expected duration for recognition of stock based compensation expense |  |  |  |  |  |  | 2 years |  |  |  |  |  |
Number of key employees | employee |  | 2 |  |  |  |  |  |  |  |  |  |  |
Stock Options | June 2021 Plan | One Employee |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) | 50,000 |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of employee option shares of common stock (in dollars per share) | $ / shares | $ 9.44 |  |  |  |  |  |  |  |  |  |  |  |
Total stock-based compensation expense (reversal) | $ |  |  |  |  |  |  | $ 36 |  |  |  |  |  |
Unrecognized stock-based compensation expense | $ |  |  |  |  |  |  | $ 395 |  |  |  |  |  |
Expected duration for recognition of stock based compensation expense |  |  |  |  |  |  | 2 years 9 months 18 days |  |  |  |  |  |
Number of key employees | employee | 1 |  |  |  |  |  |  |  |  |  |  |  |
Employee Stock | September 2015 Plan |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  |  |  |  |  |  |  |  |  | 800,000 |  |  |
Employee Stock | October 2017 Plan |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  |  |  |  |  |  |  |  |  | 300,000 |  |  |
Exercise price of employee option shares of common stock (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 1,900,000 |  |  |
Employee Stock | October 2017 Plan | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  |  | 540,000 |  |  |  |  |  |  |  |  |  |
Employee Stock | May 2019 Plan | Mr. Ralph Bartel |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Employee options granted to purchase shares of common stock (in shares) |  |  |  |  |  |  |  |  |  | 681,902 |  |  |
Options exercised (in shares) |  |  |  |  |  |  |  |  |  | 260,000 |  |  |

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