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Other Liabilities
 12 Months Ended
Dec. 31, 2023
Other Liabilities Disclosure [Abstract]  
Other Liabilities Other Liabilities
The following table summarizes the components of current and non-current portions of Other liabilities (in thousands):
Year Ended December 31,
20232022
Other liabilities, current
Accrued compensation$3,000 $2,868 
Accrued directors’ fees38 36 
Excise tax liability— 96 
Operating lease liability25 11 
Total$3,063 $3,011 
Other liabilities, non-current
Operating lease liability$8 $— 
Accrued compensation
Accrued compensation reflects amounts for pay earned but not yet due, amounts for accrued and unused vacation pay, and accrued incentive compensation.
Excise tax liability
A gold and silver excise tax applied to gross sales proceeds became effective for the Company on July 1, 2021, following the passage of Assembly Bill 495 at the Nevada Legislative Session ended on May 31, 2021. This gold and silver excise tax is a tiered tax, with a highest rate of 1.1% and the first payment was made on April 1, 2022.
The bill does not take into consideration expenses or costs incurred to generate gross proceeds. Therefore, this tax is treated as a gross receipts tax and not as a tax based on income. As a result, the gold and silver excise tax was reported as a component of Cost of sales and not as income tax expense. As of December 31, 2023 and 2022, the Company accrued Nil and $0.1 million, respectively, related to the annual excise tax.