Key developments (Details) $ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands, $ in Thousands | | | | | | | | | | | | | | | 1 Months Ended | 5 Months Ended | 6 Months Ended | 12 Months Ended | | | | | | | |
Dec. 19, 2022 CAD ($) | Dec. 13, 2022 USD ($) oz | Dec. 13, 2022 AUD ($) oz | Oct. 28, 2022 USD ($) | Oct. 27, 2022 | Sep. 26, 2022 USD ($) oz | Sep. 22, 2022 USD ($) | Apr. 29, 2022 CAD ($) | Mar. 07, 2022 USD ($) shares | Mar. 07, 2022 CAD ($) shares | Feb. 15, 2022 USD ($) | Feb. 14, 2022 | Feb. 04, 2022 CAD ($) | Dec. 21, 2021 USD ($) | Jun. 29, 2021 $ / shares shares | May 26, 2021 $ / shares shares | Oct. 31, 2021 shares | Mar. 31, 2019 USD ($) | Oct. 05, 2021 shares | Oct. 31, 2022 shares | Jun. 29, 2021 USD ($) $ / shares | Nov. 14, 2023 shares | Dec. 31, 2022 CAD ($) | Dec. 31, 2021 USD ($) | Dec. 22, 2022 $ / shares | Nov. 30, 2022 shares | Sep. 21, 2022 USD ($) | Dec. 22, 2021 $ / shares shares | Apr. 16, 2021 USD ($) | Mar. 26, 2021 USD ($) item | Jan. 12, 2021 USD ($) item |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of shares authorized to be repurchased | shares | | | | | | | | | | | | | | | | | 2,000,000 | | | | | | | | | 2,000,000 | | | | | |
Number of shares authorized to be repurchased per day | shares | | | | | | | | | | | | | | | | | 8,218 | | | | | 9,186 | | | | | | | | | |
Percentage of average daily trading volume of the common shares that can be repurchased | | | | | | | | | | | | | | | | | | | 25% | 25% | | | | | | | | | | | |
Average daily trading volume of the common shares | shares | | | | | | | | | | | | | | | | | | | 32,872 | 36,744 | | | | | | | | | | | |
Proceeds from share issuance | | | | | | | | | | | | | | | | | | | | | | | | $ 245,115 | | | | | | | |
IPO | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of treasury common shares issued | shares | | | | | | | | | | | | | | | | 19,230,770 | | | | | | | | | | | | | | | |
Offering price per share | $ / shares | | | | | | | | | | | | | | | | $ 13 | | | | | | | | | | | | | | | |
Proceeds from share issuance | | | | | | | | | | | | | | | | | | | | | $ 245,115 | | | | | | | | | | |
Over-allotment option | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of treasury common shares issued | shares | | | | | | | | | | | | | | | 1,058,553 | | | | | | | | | | | | | | | | |
Offering price per share | $ / shares | | | | | | | | | | | | | | | $ 13 | | | | | | $ 13 | | | | | | | | | | |
Clean Air Metals NSR Royalty | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of net smelter returns ("NSR") royalty acquired | 2.50% | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Consideration funded for acquisition of ("NSR") royalty. | $ 10,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Consideration payable for acquisition of ("NSR") royalty. | $ 5,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Period for payment of remaining amount | 90 days | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Maximum allowed percentage of the NSR royalty that can be bought down. | 40% | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Reduced percentage of net smelter returns ("NSR") royalty | 1.50% | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Payments for acquisition of net smelter returns ("NSR") royalty | $ 15,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Payment to be received to reduce net smelter returns ("NSR") royalty | | | | | | | | | | | | | | | | | | | | | | | $ 10,500 | | | | | | | | |
Prieska GRR | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Acquisition of gross revenue return ("GRR") | | | $ 10,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of gross revenue from future production | | 0.80% | 0.80% | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Prieska Stream | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Acquisition of gold and silver stream | | $ 80,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Initial amount of gold to be delivered in the stream agreement | oz | | 94,300 | 94,300 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Initial amount of silver to be delivered in the stream agreement | oz | | 5,710,000 | 5,710,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Reduced percentage of payable gold and silver for the remaining mine life | | 50% | 50% | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of spot gold price for each ounce of gold delivered as ongoing payments | | 10% | 10% | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of spot silver price for each ounce of silver delivered as ongoing payments | | 10% | 10% | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Pumpkin Hollow | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of gold and silver stream | | | | | | | | | | | | | | | | | | | | | | | 97.50% | | | | | | | | |
Royalty rate | | | | 2% | 0.70% | | | | | | | | | | | | | | | | | | 2% | | | | | | | | |
Funding of restart financing package to support mine restart and ramp-up. | | | | $ 30,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Additional funding to increase net smelter returns ("NSR") royalty | | | | 26,192 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Remaining funding for metal purchase and sale agreement | | | | $ 3,808 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Sofia Project | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of net smelter returns ("NSR") royalty acquired | | | | | | | | | 1% | 1% | | | | | | | | | | | | | | | | | | | | | |
Transaction costs capitalised | | | | | | | | | $ 192 | | | | | | | | | | | | | | | | | | | | | | |
Percentage of additional NSR royalty | | | | | | | | | 1% | 1% | | | | | | | | | | | | | | | | | | | | | |
Payments for acquisition of net smelter returns ("NSR") royalty | | | | | | | | | $ 5,000 | | | | | | | | | | | | | | | | | | | | | | |
Beaufor royalty purchase agreement | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of net smelter returns ("NSR") royalty acquired | | | | | | | | | | | | | 2% | | | | | | | | | | | | | | | | | | |
Additional funding to increase net smelter returns ("NSR") royalty | | | | | | | | | | | | | $ 4,500 | | | | | | | | | | | | | | | | | | |
Percentage of milestone-based stepdown in net smelter returns ("NSR") royalty | | | | | | | | | | | | | 1% | | | | | | | | | | | | | | | | | | |
Increased percentage of net smelter returns ("NSR") royalty | | | | | | | | | | | | | 2.75% | | | | | | | | | | | | | | | | | | |
Payments for acquisition of net smelter returns ("NSR") royalty | | | | | | | | | | | | | $ 6,750 | | | | | | | | | | | | | | | | | | |
Tamarack Project | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Consideration to acquire royalty | | | | | | | | | | | | | | | | | | $ 5,000 | | | | | | | | | | | | | |
Chilean Royalty Portfolio | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of net smelter returns ("NSR") royalty acquired | | | | | | | | | | | | | | 2% | | | | | | | | | | | | | | | | | |
Reduced percentage of net smelter returns ("NSR") royalty | | | | | | | | | | | | | | 1% | | | | | | | | | | | | | | | | | |
Transaction costs capitalised | | | | | | | | | | | | | | $ 98 | | | | | | | | | | | | | | | | | |
Payments for acquisition of net smelter returns ("NSR") royalty | | | | | | | | | | | | | | $ 4,900 | | | | | | | | | | | | | | | | | |
Aster 2 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of net smelter returns ("NSR") royalty acquired | | | | | | | | | | | | | | 2% | | | | | | | | | | | | | | | | | |
Reduced percentage of net smelter returns ("NSR") royalty | | | | | | | | | | | | | | 1% | | | | | | | | | | | | | | | | | |
Payment to be received to reduce net smelter returns ("NSR") royalty | | | | | | | | | | | | | | $ 2,000 | | | | | | | | | | | | | | | | | |
Aster 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of net smelter returns ("NSR") royalty acquired | | | | | | | | | | | | | | 2% | | | | | | | | | | | | | | | | | |
Reduced percentage of net smelter returns ("NSR") royalty | | | | | | | | | | | | | | 1% | | | | | | | | | | | | | | | | | |
Payment to be received to reduce net smelter returns ("NSR") royalty | | | | | | | | | | | | | | $ 4,000 | | | | | | | | | | | | | | | | | |
Helada | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of net smelter returns ("NSR") royalty acquired | | | | | | | | | | | | | | 2% | | | | | | | | | | | | | | | | | |
Reduced percentage of net smelter returns ("NSR") royalty | | | | | | | | | | | | | | 1% | | | | | | | | | | | | | | | | | |
Payment to be received to reduce net smelter returns ("NSR") royalty | | | | | | | | | | | | | | $ 4,000 | | | | | | | | | | | | | | | | | |
IAMGOLD Royalty Portfolio | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Transaction costs capitalised | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 393 | | |
Number of royalties agreed to acquire | item | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 34 |
Aggregate acquisition price of royalties | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 35,667 | $ 45,667 |
Number of royalties acquired | item | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 33 | |
Steppe Gold Prepaid Gold Interest | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Payments to acquire financial assets | | | | | | $ 4,800 | | | | | | | | | | | | | | | | | | | | | | | | | |
Ounces of gold to be received | oz | | | | | | 3,000 | | | | | | | | | | | | | | | | | | | | | | | | | |
Period to deliver gold | | | | | | 8 months | | | | | | | | | | | | | | | | | | | | | | | | | |
Gunnison | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of common share purchase warrants held | shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | 3,500,000 | | | |
Exercise price of common share purchase warrants | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | $ 0.54 | | | $ 1.50 | | | |
Nevada Copper | Pumpkin Hollow | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Maximum allowed percentage of the NSR royalty that can be bought down. | | | | 1.30% | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Royalty rate | | | | | 0.70% | | | | | | | | | | | | | | | | | | | | | | | | | | |
Payments to reduce royalty rate | | | | $ 33,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Maximum period for buy down royalty | | | | 24 months | | | | | | | | | | | | | | | | | | | | | | | | | | | |
2673502 Ontario Inc. | Sofia Project | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of shares acquired | shares | | | | | | | | | 2,000,000 | 2,000,000 | | | | | | | | | | | | | | | | | | | | | |
Payments for purchase of common shares | | | | | | | | | | $ 3,000 | | | | | | | | | | | | | | | | | | | | | |
2673502 Ontario Inc. | AndeX Minerals | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Ownership (in percent) | | | | | | | | | 96% | 96% | | | | | | | | | | | | | | | | | | | | | |
AndeX Minerals | Sofia Project | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Ownership percentage in project | | | | | | | | | 100% | 100% | | | | | | | | | | | | | | | | | | | | | |
Talon Nickel (USA) LLC | Tamarack Project | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Royalty rate | | | | | | | | | | | 1.85% | 3.50% | | | | | | | | | | | | | | | | | | | |
Payments to reduce royalty rate | | | | | | | | | | | $ 4,500 | | | | | | | | | | | | | | | | | | | | |
Gain from reduction of net smelter returns ("NSR") royalty | | | | | | | | | | | $ 2,099 | | | | | | | | | | | | | | | | | | | | |
Payable gold | Prieska Stream | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Initial percentage of mine production to be delivered | | 84% | 84% | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Required ounces per tonne of copper contained in concentrate | oz | | 0.359 | 0.359 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Reference gold | Prieska Stream | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Initial percentage of mine production to be delivered | | 84% | 84% | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Reference silver | Prieska Stream | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Initial percentage of mine production to be delivered | | 84% | 84% | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Payable silver | Prieska Stream | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Required ounces per tonne of copper contained in concentrate | oz | | 21.736 | 21.736 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Revolving credit facility | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Notional amount | | | | | | | $ 500,000 | | | | | | | | | | | | | | | | | | | | | | | | |
Extension in maturity term of borrowings | | | | | | | 3 years | | | | | | | | | | | | | | | | | | | | | | | | |
Uncommitted accordion amount | | | | | | | $ 200,000 | | | | | | | | | | | | | | | | | | | | $ 100,000 | | | | |
Working capital facility | | | | | | | 700,000 | | | | | | | | | | | | | | | | | | | | | | | | |
Transaction costs capitalised | | | | | | | $ 1,844 | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of gross revenue from future production | | | | | | | 3 years | | | | | | | | | | | | | | | | | | | | | | | | |
Pumpkin Hollow Senior Credit Facility, Tranche 2 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Notional amount | | | | $ 25,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from credit facility | | | | $ 5,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stornoway Working Capital Facility | Stornoway Diamonds (Canada) Inc | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Working capital facility | | | | | | | | $ 20,000 | | | | | | | | | | | | | | | | | | | | | | | |
Stornoway Working Capital Facility | TF R&S Canada Limited | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Key Developments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from repayment of Stornoway Working Capital Facility | | | | | | | | 1,493 | | | | | | | | | | | | | | | | | | | | | | | |
Working capital facility receivable maximum amount allowed | | | | | | | | $ 2,600 | | | | | | | | | | | | | | | | | | | | | | | |
Amount outstanding under Working Capital Facility to trigger quarterly stream payments | | | | | | | | | | | | | | | | | | | | | | | $ 0 | | | | | | | | |