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COMMITMENTS AND CONTINGENCIES: - Labor matters (Details)
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2022
PEN (S/)
Dec. 31, 2022
USD ($)
Mar. 31, 2023
item
employee
Dec. 31, 2021
PEN (S/)
item
Dec. 31, 2021
USD ($)
item
Labor matters          
Compliance with Arbitration Award, Compensation Bonus Paid to Each Employee S/ 4,000 $ 1,062      
Compliance with Arbitration Award, Signing Bonus Paid to Each Employee S/ 1,000 $ 265.6      
Peru | Labor Matters          
Labor matters          
Percentage of labor unionized     69.60%    
Total number of workers | employee     4,509    
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 $ 2,656
Peru | Labor Matters | Minimum          
Labor matters          
Term of agreement       3 years 3 years
Labor expense       S/ 45,000 $ 11,952
Peru | Labor Matters | Maximum          
Labor matters          
Term of agreement       6 years 6 years
Labor expense       S/ 90,000 $ 23,904