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ACCRUED LIABILITIES (Tables) | 12 Months Ended
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Dec. 31, 2020
ACCRUED LIABILITIES. |
Accrued liabilities on the balance sheet |
|  | December 31,
|  | 2020 |  | 2019
|  | (thousands of dollars)
Royalties payable (1) |  |  | 1,151 |  |  | 1,166
Other Accrued Liabilities |  |  | 1,218 |  |  | 1,104
Accrued Liabilities |  | $ | 2,369 |  | $ | 2,270
(1)Royalties payable were derived during prior years of production. Liabilities do not accrue interest or have a stated maturity date.

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