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Description of Business and Summary of Significant Accounting Estimates and Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Description of Business and Summary of Significant Accounting Estimates and Policies |
Schedule of stock-based compensation expense | The stock-based compensation expense related to the Company’s stock plans were allocated as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2023 |  | 2022
Direct operating costs | ​ | $ | 294 | ​ | $ | 214
Selling and administrative expenses | ​ |  | 3,733 | ​ |  | 3,069
Total stock-based compensation | ​ | $ | 4,027 | ​ | $ | 3,283
Schedule of information about contract liabilities (deferred revenue) | The table below provides information about contract liabilities (deferred revenue) and the significant changes in the balance for the years ended December 31, 2023 and 2022, respectively (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31,
​ | ​ | 2023 | ​ | 2022
Balance at January 1 | ​ | $ | 4,366 | ​ | $ | 4,509
Net deferred revenue in the period | ​ | ​ | 21,619 | ​ | ​ | 29,756
Revenue recognized | ​ | ​ | (22,586) | ​ | ​ | (29,618)
Currency translations and other adjustments | ​ | ​ | 124 | ​ | ​ | (281)
Balance at December 31 |  | $ | 3,523 |  | $ | 4,366

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