| **Stock-based Compensation, Equity Grants, and Warrants - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands** | 12 Months Ended          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------|
||
| **Number of Shares**                                                                                                                                           |                     |   |   |
| Outstanding at beginning of period (in shares)                                                                                                                 | 2,380                    | 1,613 |   |
| Granted (in shares)                                                                                                                                            |                     | 830 |   |
| Cancelled (in shares)                                                                                                                                          | (56)                     | (63) |   |
| Outstanding at end of period (in shares)                                                                                                                       | 2,324                    | 2,380 | 1,613 |
| **Weighted Average Exercise Price**                                                                                                                            |                     |   |   |
| Outstanding at beginning of period (in dollars per share)                                                                                                      | $ 1.40                   | $ 1.15 |   |
| Granted (in dollars per share)                                                                                                                                 |                     | 1.52 |   |
| Cancelled (in dollars per share)                                                                                                                               | 1.40                     | 1.40 |   |
| Outstanding at end of period (in dollars per share)                                                                                                            | $ 1.40                   | $ 1.40 | $ 1.15 |
| **Share Based Compensation Arrangement by Share Based Payment, Award, Options Weighted Average Remaining Contractual Term [Abstract]**                         |                     |   |   |
| Outstanding                                                                                                                                                    | 6 years 9 months 22 days | 7 years 9 months 22 days | 7 years 10 months 24 days |
| **Share Based Compensation Arrangement by Share Based Payment, Award, Options Aggregate Intrinsic Value [Abstract]**                                           |                     |   |   |
| Outstanding at the beginning of period (in dollars)                                                                                                            | $ 1,589                  | $ 388 |   |
| Outstanding at the end of period (in dollars)                                                                                                                  | $ 3,649                  | $ 1,589 | $ 388 |

| X                                                                                                                                                                                                                                                                                                                                      |
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Gross number of share options (or share units) granted during the period.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of options outstanding, including both vested and non-vested options.
+ References
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| - Definition
A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
+ References
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