Note 7 - Exploration and Evaluation Assets (Details Textual) - USD ($)
$ in Thousands |
1 Months Ended |
12 Months Ended |
|
|
Dec. 31, 2021 |
May 31, 2021 |
Oct. 31, 2020 |
Dec. 31, 2021 |
Dec. 31, 2017 |
Dec. 31, 2020 |
Dec. 31, 2018 |
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Exploration expenditures |
|
|
|
$ 9,509
|
|
|
|
| Total provision for decommissioning, restoration and rehabilitation costs |
$ 409
|
|
|
409
|
|
$ 409
|
|
| Trade and payables included in exploration and evaluation assets |
518
|
|
|
518
|
|
128
|
|
| Prospective land claim package [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Percentage of interest acquirable |
|
|
|
|
100.00%
|
|
100.00%
|
| Exploration expenditures |
|
|
|
$ 9,930
|
|
|
|
| Option payments commitment during option period, year five |
|
|
|
|
$ 150
|
|
|
| Net Smelter Returns Royalty Percentage |
|
|
|
2.00%
|
2.00%
|
|
|
| Option payments commitment during option period, year four |
|
$ 100
|
|
|
|
|
|
| Equity issued, property option payment (in shares) |
|
5,223
|
|
|
|
|
|
| Option payments to earn right, title and interest to property during option period |
150
|
|
$ 150
|
|
|
|
|
| Option payments commitment during earn-in option agreement period |
|
|
|
$ 1,550
|
|
|
|
| Earn in option agreement period (Year) |
|
|
|
7 years
|
|
|
|
| Optional exploration expenditure commitment during earn-in option agreement period |
|
|
|
$ 30,000
|
|
|
|
| Total provision for decommissioning, restoration and rehabilitation costs |
$ 0
|
|
|
$ 0
|
|
$ 149
|
|