COMMITMENTS AND CONTINGENCIES: - Labor matters (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2022 item	Dec. 31, 2022 item employee	Dec. 31, 2021 PEN (S/) item	Dec. 31, 2021 USD ($) item
Ilo and Cuajone
Labor matters
Number of labor unions	6
Peru | Labor Matters
Labor matters
Percentage of labor unionized		76.50%
Total number of workers | employee		4,947
Number of labor unions		6
Number of labor unions represent majority of workers		0
Extended term of agreement			6 years	6 years
Annual salary increase (as a percent)			5.00%	5.00%
Number of labor unions of collective agreement signed			6	6
Long term agreement bonus			S/ 10,000	$ 2,618
Peru | Labor Matters | Minimum
Labor matters
Term of agreement			3 years	3 years
Labor expense			S/ 45,000	$ 11,780
Peru | Labor Matters | Maximum
Labor matters
Term of agreement			6 years	6 years
Labor expense			S/ 90,000	$ 23,560