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Accrued expenses and other current liabilities | 12 Months Ended
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Dec. 31, 2021
Accrued expenses and other current liabilities |
Accrued expenses and other current liabilities | Note 9 – Accrued expenses and other current liabilities Elements of Accrued expenses and other current liabilities are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
December 31 , |  | 2021 |  | 2020
(in thousands) |  | ​ |  |  | ​ |
Accrued expenses | ​ | $ | 13,986 | ​ | $ | 5,329
Cylinder deposits | ​ |  | 12,307 | ​ |  | 11,338
Lease obligations | ​ |  | 1,378 | ​ |  | 2,702
Other current liabilities | ​ |  | 2,966 | ​ |  | 48
Total | ​ | $ | 30,637 | ​ | $ | 19,417
​

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- Definition The entire disclosure for accounts payable, accrued expenses, and other liabilities that are classified as current at the end of the reporting period. + References No definition available. + Details
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