Note 6 - Investment in Juanicipio (Tables)

12 Months Ended

Dec. 31, 2021

Statement Line Items [Line Items]

Disclosure of carrying amount of investments in associates [text block]

	December 31,			December 31,
	2021			2020
Juanicipio Project oversight expenditures incurred 100% by MAG	$	620		$	568
Interest earned, advances to Minera Juanicipio (see Note 14) (1)		(1,316	)		(567	)
Cash contributions to Minera Juanicipio		73,524			63,712
Total for the year		72,828			63,713
Income from equity accounted Investment in Juanicipio (2)		15,686			2,214
Balance, beginning of year		202,570			136,643
Balance, end of year	$	291,084		$	202,570

Disclosure of financial information of investments in associates [text block]

	December 31,		December 31,
	2021		2020
Cash and cash equivalents	$	18,972	$	51,503
Value added tax and other receivables		25,580		26,055
Concentrate sales receivable from Fresnillo		18,853		5,203
Inventory		3,234		427
Prepaids and other assets		104		-
Total current assets		66,743		83,188
Right-of-use assets		2,052		18
Mineral interests, plant and equipment		644,609		381,780
Deferred tax assets		5,254		-
Total assets	$	718,658	$	464,986
Payables to Peñoles and other vendors	$	22,835	$	3,713
Total current liabilities		22,835		3,713
Interest payable to shareholders		4,279		1,298
Lease liabilities		2,053		13
Provisions		4,070		1,450
Deferred tax liabilities		31,266		8,406
Total liabilities		64,503		14,880
Shareholders equity including shareholder advances		654,155		450,106
Total liabilities and equity	$	718,658	$	464,986

Disclosure of associate operations [text block]

	Year ended December 31,
	2021			2020
Sales	$	75,393		$	15,335
Cost of sales		(15,329	)		(3,873	)
Gross profit		60,064			11,462
Consulting and administrative expenses		(1,929	)		(239	)
Extraordinary mining duty		(337	)		(76	)
		57,798			11,147
Exchange losses and other		(1,363	)		(623	)
Income tax expense		(20,784	)		(5,492	)
Income for the year	$	35,651		$	5,032
MAG's 44% equity income	$	15,686		$	2,214

Disclosure of associate cash flow statements [text block]

	Year ended December 31,
	2021			2020
Operating activities
Net income for the year	$	35,651		$	5,032
Items not involving cash
Deferred income tax expense		17,606			5,118
Other		419			1,298
Change in operating assets and liabilities		1,656			(13,283	)
Net cash provided from (used in) operating activities		55,332			(1,835	)
Investing activities
Capital expenditures including plant, mine development and exploration		(254,830	)		(121,125	)
Net cash used in investing activities		(254,830	)		(121,125	)
Financing activities
Shareholder loans and other capital provided by partners		167,100			144,800
Payment of lease obligations		(412	)		(21	)
Net cash provided from financing activities		166,688			144,779
Effects of exchange rate changes on cash and cash equivalents		279			83
(Decrease) increase in cash and equivalents		(32,810	)		21,819
Cash and cash equivalents, beginning of year		51,503			29,601
Cash and cash equivalents, end of year	$	18,972		$	51,503