CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net income (loss)	$ 34,434	$ (43,691)	$ 33,177
Adjustments to reconcile net loss from operating activities:
Loss from investment in McEwen Copper Inc. (Note 9)	25,547	46,977	57,821
Income from investment in Minera Santa Cruz S.A. (Note 9)	(41,125)	(9,021)	(62)
Depreciation, amortization and depletion	27,849	30,863	30,359
Gain on marketable securities (Note 5)	(12,849)	(286)	(10,684)
Foreign exchange (gain) loss	(235)	656	48,977
Reclamation accretion and adjustments to estimate	3,861	864	2,693
Income and mining tax (recovery) expense (Note 19)	(22,291)	(6,976)	37,018
Flow through premium amortization (Note 13)	(5,649)	(2,304)	(4,045)
Stock-based compensation	3,713	3,244	971
Dilution gain from investments in McEwen Copper Inc. (Note 9)	(789)	(5,777)
Gain on deconsolidation of McEwen Copper Inc. (Note 9)			(222,157)
Amortization of debt issuance costs	697
Other	437	349
Changes in non-cash working capital items:
Change in inventories	(18,901)	(711)	4,554
Change in other assets related to operations	(2,077)	3,067	(81)
Change in accounts payable and accrued liabilities	13,016	5,792	(19,865)
Change in contract liability	4,005	3,543	(6,151)
Change in other liabilities related to operations	(2,778)	2,865	7,838
Cash provided by (used in) operating activities	6,865	29,454	(39,637)
Cash flows from investing activities:
Additions to mineral property interests and plant and equipment	(44,639)	(43,095)	(26,099)
Advances to related parties - McEwen Copper Inc. (Note 14)	(5,056)
Investment in marketable securities (Note 5)	(2,154)	(366)	(34,157)
Dividends received from Minera Santa Cruz S.A. (Note 9)	2,246
Proceeds from sale of marketable securities	1,574
Investment in McEwen Copper Inc. (Note 9)		(14,000)
Proceeds from sale of investment in McEwen Copper Inc.			6,032
Cash outflow on McEwen Copper Inc. deconsolidation			(45,708)
Notes receivable from Timberline		(1,880)
Cash and restricted cash received from acquisition of Timberline (Note 20)		1,131
Other		164	295
Cash used in investing activities	(48,029)	(58,046)	(99,637)
Cash flows from financing activities:
Proceeds from senior convertible notes (Note 10)	110,000
Purchase of capped call options (Note 10)	(15,114)
Convertible notes financing costs (Note 10)	(4,123)
Principal repayment on long-term debt (Note 11)	(20,000)		(25,000)
Issuance of flow-through common shares, net of issuance costs (Note 13)	4,868	20,424	13,428
Proceeds from McEwen Copper Inc. financing			185,390
Proceeds from exercise of stock options	3,538
Proceeds from exercise of warrants	610	9
Payment of finance lease obligations	(1,053)	(1,231)	(1,636)
Cash provided by financing activities	78,726	19,202	172,182
Effect of exchange rate change on cash and cash equivalents	235	(656)	(48,977)
Increase in cash, cash equivalents and restricted cash	37,797	(10,046)	(16,069)
Cash, cash equivalents and restricted cash, beginning of period	17,464	27,510	43,579
Cash, cash equivalents and restricted cash, end of period	55,261	17,464	27,510
Supplemental disclosure of cash flow information:
Interest paid	(5,067)	(3,911)	(4,728)
Interest received	1,126	636	34,680
Taxes paid	(1,977)	$ (712)	$ (1,410)
Non-cash investing activities:
Mineral property additions in accounts payable and accrued liabilities	$ (3,448)