MINERAL PROPERTIES - Schedule of exploration expenditures recorded on the statement of loss and comprehensive loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	$ 2,660	$ 1,250
Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	194	57
Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	94	7
Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	1,777	575
Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	222	38
Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	43	80
Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	285	378
Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	45	115
Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	(2,587)	(1,017)
Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	73	233
Singatse Peak Services [Member] | MacArthur [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	411	209
Singatse Peak Services [Member] | MacArthur [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	8
Singatse Peak Services [Member] | MacArthur [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	40	0
Singatse Peak Services [Member] | MacArthur [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	350	196
Singatse Peak Services [Member] | MacArthur [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	21	5
Singatse Peak Services [Member] | MacArthur [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | MacArthur [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | MacArthur [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | MacArthur [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | MacArthur [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	(411)	(209)
Singatse Peak Services [Member] | MacArthur [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Yerington [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	1,260	423
Singatse Peak Services [Member] | Yerington [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	157	5
Singatse Peak Services [Member] | Yerington [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	53	7
Singatse Peak Services [Member] | Yerington [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	524	0
Singatse Peak Services [Member] | Yerington [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	201	33
Singatse Peak Services [Member] | Yerington [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Yerington [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	40	0
Singatse Peak Services [Member] | Yerington [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	285	378
Singatse Peak Services [Member] | Yerington [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Yerington [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	(1,260)	(423)
Singatse Peak Services [Member] | Yerington [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Bear [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	916	385
Singatse Peak Services [Member] | Bear [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Bear [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	1	0
Singatse Peak Services [Member] | Bear [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	903	379
Singatse Peak Services [Member] | Bear [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Bear [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Bear [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	1	0
Singatse Peak Services [Member] | Bear [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Bear [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	11	6
Singatse Peak Services [Member] | Bear [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	(916)	(385)
Singatse Peak Services [Member] | Bear [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Wassuk [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Wassuk [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Singatse Peak Services [Member] | Prospects [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Prospects [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Singatse Peak Services [Member] | Copper Canyon [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Lion CG [Member] | Chaco Bear & Ashton [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Lion CG [Member] | Chaco Bear & Ashton [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Lion CG [Member] | Chaco Bear & Ashton [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Lion CG [Member] | Chaco Bear & Ashton [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Lion CG [Member] | Chaco Bear & Ashton [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Lion CG [Member] | Chaco Bear & Ashton [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Lion CG [Member] | Chaco Bear & Ashton [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Lion CG [Member] | Chaco Bear & Ashton [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Lion CG [Member] | Chaco Bear & Ashton [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Lion CG [Member] | Chaco Bear & Ashton [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Falcon Copper Corp [Member] | Blue Copper [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	56	134
Falcon Copper Corp [Member] | Blue Copper [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	37	44
Falcon Copper Corp [Member] | Blue Copper [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Blue Copper [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Blue Copper [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Blue Copper [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Blue Copper [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	24
Falcon Copper Corp [Member] | Blue Copper [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Blue Copper [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	19	66
Falcon Copper Corp [Member] | Blue Copper [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Blue Copper [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	56	134
Falcon Copper Corp [Member] | Cabin Property [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	40
Falcon Copper Corp [Member] | Cabin Property [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Cabin Property [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Cabin Property [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Cabin Property [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Cabin Property [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Cabin Property [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	4
Falcon Copper Corp [Member] | Cabin Property [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Cabin Property [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	36
Falcon Copper Corp [Member] | Cabin Property [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Cabin Property [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	40
Falcon Copper Corp [Member] | Muncy [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	2	0
Falcon Copper Corp [Member] | Muncy [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Muncy [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Muncy [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Muncy [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Muncy [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Muncy [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	2	0
Falcon Copper Corp [Member] | Muncy [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Muncy [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Muncy [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Muncy [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	2	0
Falcon Copper Corp [Member] | Pioneer Property [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	1
Falcon Copper Corp [Member] | Pioneer Property [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Pioneer Property [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Pioneer Property [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Pioneer Property [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Pioneer Property [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Pioneer Property [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Pioneer Property [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Pioneer Property [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	1
Falcon Copper Corp [Member] | Pioneer Property [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Pioneer Property [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	1
Falcon Copper Corp [Member] | Arizona Properties [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		7
Falcon Copper Corp [Member] | Arizona Properties [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Falcon Copper Corp [Member] | Arizona Properties [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Falcon Copper Corp [Member] | Arizona Properties [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Falcon Copper Corp [Member] | Arizona Properties [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Falcon Copper Corp [Member] | Arizona Properties [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Falcon Copper Corp [Member] | Arizona Properties [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Falcon Copper Corp [Member] | Arizona Properties [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		7
Falcon Copper Corp [Member] | Arizona Properties [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		0
Falcon Copper Corp [Member] | Arizona Properties [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures		7
Falcon Copper Corp [Member] | Groundhog [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	13	0
Falcon Copper Corp [Member] | Groundhog [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Groundhog [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Groundhog [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Groundhog [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Groundhog [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Groundhog [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Groundhog [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Groundhog [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	13	0
Falcon Copper Corp [Member] | Groundhog [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Groundhog [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	13	0
Falcon Copper Corp [Member] | Recon [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	1	52
Falcon Copper Corp [Member] | Recon [Member] | Property Maintenance [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Recon [Member] | Assay & Labs [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Recon [Member] | Drilling [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Recon [Member] | Environmental [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Recon [Member] | Geological & Mapping [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0
Falcon Copper Corp [Member] | Recon [Member] | Geophysical Surveys [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	52
Falcon Copper Corp [Member] | Recon [Member] | Technical Study [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Recon [Member] | Field Support [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	1	0
Falcon Copper Corp [Member] | Recon [Member] | Rio Tinto [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	0	0
Falcon Copper Corp [Member] | Recon [Member] | Lion CG [Member]
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Exploration expenditures	$ 1	$ 52