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Accrued Expenses and Other Current Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2025
Payables and Accruals [Abstract] |
Schedule of accrued expenses and other current liabilities | ​
​ | ​ | ​ | ​ | ​ | ​
​ | As of December 31,
(in thousands) | 2025 | ​ ​ ​ | 2024
Employee compensation and related costs | $ | 4,347 | ​ | $ | 6,646
Vendor project charges | ​ | 3,000 | ​ | ​ | 7,500
Contract liabilities | ​ | 2,669 | ​ | ​ | —
Professional and consulting services | ​ | 891 | ​ | ​ | 1,480
Short-term notes payables | ​ | 830 | ​ | ​ | —
Software services | ​ | 769 | ​ | ​ | —
Income taxes payable | ​ | 490 | ​ | ​ | 313
Construction in process | ​ | 53 | ​ | ​ | 1,408
Other |  | 2,022 | ​ |  | 982
Accrued expenses and other current liabilities | $ | 15,071 | ​ | $ | 18,329

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