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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION (Tables) | 9 Months Ended
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Sep. 30, 2023
SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION |
Supplemental Information, Balance Sheets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, |  | December 31,
(U.S. dollars in thousands) | ​ | 2023 | ​ | 2022
Accounts payable and accruals – other: | ​ | ​ | ​ | ​ | ​ | ​
Payroll and related expenses | ​ | $ | 1,239 | ​ | $ | 1,216
Interest Payable | ​ | ​ | 123 | ​ | ​ | 719
Provision for vacation | ​ | ​ | 1,471 | ​ | ​ | 1,404
Accrued expenses | ​ | ​ | 9,249 | ​ | ​ | 7,478
Royalties payable | ​ | ​ | 332 | ​ | ​ | 781
Income tax payable | ​ | ​ | 3,257 | ​ | ​ | 530
Reserve for deductions from revenue | ​ |  | 2,816 | ​ | ​ | —
Property and equipment suppliers | ​ |  | 253 | ​ | ​ | 143
​ | ​ | $ | 18,740 | ​ | $ | 12,271
​

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