Note 6 - Investments in Associate ("Minera Juanicipio S.A. DE C.V.") (Tables)

12 Months Ended

Dec. 31, 2018

Statement Line Items [Line Items]

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

		December 31, 2018		December 31, 2017
Joint venture oversight expenditures incurred 100% by MAG	$	330	$	754
Cash contributions to Minera Juanicipio (1)		23,583		18,700
Total for the current year		23,913		19,454
Equity pick up of current income for the year (2)		227		308
Balance, beginning of year		57,074		37,312
Balance, end of year	$	81,214	$	57,074

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

		December 31, 2018		December 31, 2017
Cash and cash equivalents	$	16,715	$	9,639
IVA and other receivables		9,146		3,861
Prepaids		–		–
Total current assets		25,861		13,500
Minerals, surface rights, exploration & development expenditures		161,975		116,117
Total assets	$	187,836	$	129,617
Payables to Peñoles and other vendors	$	5,736	$	1,217
Total current liabilities		5,736		1,217
Provision for reclamation and remediation costs		450		393
Deferred income tax liability		6,515		6,962
Total liabilities		12,701		8,572
Shareholders equity		175,135		121,045
Total liabilities and equity	$	187,836	$	129,617

Disclosure of associate operations [text block]

		December 31, 2018		December 31, 2017
Deferred income tax recovery	$	436	$	965
Exchange gain (loss)		80		(265	)
Net income	$	516	$	700
MAG's 44% equity pick up	$	227	$	308