Exploration expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Exploration expenses
Exploration expenses	$ 105,286	$ 39,505
Santa Cruz, USA (Note 8(a))
Exploration expenses
Exploration expenses	61,172	9,966
San Matias, Colombia (Cordoba) (Note 8(d))
Exploration expenses
Exploration expenses	18,454	13,789
Pinaya, Peru (Kaizen) (Note 8(c))
Exploration expenses
Exploration expenses	2,616	1,774
Tintic, USA (Note 8(b))
Exploration expenses
Exploration expenses	2,282	2,474
Hog Heaven, USA (Note 17)
Exploration expenses
Exploration expenses	2,216	2,029
Yangayu, Papua New Guinea
Exploration expenses
Exploration expenses	2,128	497
Perseverance, USA (Cordoba) (Note 17)
Exploration expenses
Exploration expenses	1,785	742
Carolina, USA (Note 17)
Exploration expenses
Exploration expenses	1,307	0
Lincoln, USA
Exploration expenses
Exploration expenses	1,312	235
Bitter Creek, USA
Exploration expenses
Exploration expenses	644	340
Ivory Coast Project, Ivory Coast (Note 17)
Exploration expenses
Exploration expenses	70	1,931
Project Generation and other
Exploration expenses
Exploration expenses	$ 11,300	$ 5,728