COMMITMENTS AND CONTINGENCIES: - Labor matters (Details)			1 Months Ended			3 Months Ended		12 Months Ended
	Oct. 23, 2023 PEN (S/)	Oct. 23, 2023 USD ($)	Jun. 30, 2023 item	Dec. 31, 2022 PEN (S/) item	Dec. 31, 2022 USD ($) item	Dec. 31, 2023 item	Mar. 31, 2023 item	Dec. 31, 2023 item employee	Dec. 31, 2021 PEN (S/) item	Dec. 31, 2021 USD ($) item
Labor matters
Number of productive units						3
Period of litigation								12 years
Percentage of affiliated workers in a union renewed its representatives						24.70%
Percentage of workers in a union						25.70%
Ilo and Cuajone
Labor matters
Number of labor unions						6	6
Peru | Labor Matters
Labor matters
Percentage of labor unionized						60.90%		60.90%
Total number of workers | employee								4,979
Number of union reached settlement				1	1
Number of labor unions								6
Amount of Litigation settlement award	S/ 11,000	$ 2,936
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 meetings with the unions to discuss different issues of collective interest.			2
Number of labor unions of collective agreement signed									6	6
Long term agreement bonus									S/ 10,000	$ 2,670
Compliance with Arbitration Award, Compensation Bonus Paid to Each Employee				S/ 4,000	$ 1,068
Compliance with Arbitration Award, Signing Bonus Paid to Each Employee				S/ 1,000	$ 267
Peru | Labor Matters | Minimum
Labor matters
Term of agreement									3 years	3 years
Labor expense									S/ 45,000	$ 12,013
Peru | Labor Matters | Maximum
Labor matters
Term of agreement									6 years	6 years
Labor expense									S/ 90,000	$ 24,026