COVID-19 Related Costs (Tables)

12 Months Ended

Dec. 31, 2021

Unusual or Infrequent Items, or Both [Abstract]

Schedule Cost Incurred due to Catastrophic Events

The COVID-19 pandemic resulted in extra operating and transportation costs related to COVID-19 health and safety preventative measures, including incremental sanitation requirements and enhanced procedures for trucking barrels and crew changes in the Field. Below is a break-down of the costs:

	Year Ended December 31,
(Thousands of U.S. Dollars)	2021		2020		2019
Operating expenses	$	3,391	$	2,482	$	—
Transportation costs	303		197		—
COVID-19 costs	$	3,694	$	2,679	$	—