Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Taxes

Schedule of income/(loss) before income tax, domestic and foreign

	Years Ended December 31,
	2020		2019
U.S.	$	1,879	$	(1,730)
Canada		(308)		(3,514)
Other foreign, net		(1,151)		(4,142)
	$	420	$	(9,386)

Schedule of effective income tax rate reconciliation

	Years Ended December 31,
	2020		2019
Income taxed at statutory rates	$	36	$	(2,250)
Increase (decrease) in taxes from:
State Tax		66		(61)
Stock-based compensation		50		84
Imputed interest		9		20
Other adjustments		(1)		82
Mining concessions disposition		853		—
Inflation adjustment		(254)		—
Prior year provision to actual adjustments		885		475
Change in US tax rate		29		—
Change in foreign tax rate		100		(1,361)
Differences in tax rates		(52)		(284)
Effect of foreign exchange		(1,236)		66
Change in valuation allowance		(485)		3,229
Income tax (benefit)/expense	$	—	$	—

Schedule of deferred tax assets and liabilities

	December 31,
	2020		2019
Deferred income tax assets
Excess tax basis over book basis of property, plant and equipment	$	7,776	$	8,295
Marketable securities		—		500
Operating loss carryforwards		36,965		36,716
Capital loss carryforwards		13,778		13,618
Capital expenditures		374		374
Stock compensation		164		235
VAT recoverable		150		158
Unrealized foreign exchange gain/loss		117		125
Environmental liability		65		65
Offering costs		46		104
Accrued vacation		22		24
Other		5		—
Total future tax assets		59,462		60,214
Valuation allowance for future tax assets		(59,401)		(59,886)
		61		328
Deferred income tax liabilities
Other investments		61		328
		61		328
Total Deferred Taxes	$	—	$	—

Summary of expiring loss carryforwards

	Noncapital Canada		U.S.		Mexico		Barbados		Total
2020	$	—	$	—	$	—	$	22	$	22
2021		—		—		—		4		4
2022		—		—		1,653		6		1,659
2023		—		—		385		6		391
2024		—		—		—		6		6
2025		—		—		83		6		89
2026		1,027		—		847		5		1,879
2027		847		—		—		7		854
2028		5,245		—		—		—		5,245
2029		4,022		—		—		—		4,022
2030		5,032		1,761		—		—		6,793
2031		3,806		3,407		—		—		7,213
2032		6,397		2,323		—		—		8,720
2033		6,185		3,098		—		—		9,283
2034		4,420		—		—		—		4,420
2035		3,729		2		—		—		3,731
2036		2,799		2,655		—		—		5,454
2037		1,916		2,482		—		—		4,398
2038		2,666		—		—		—		2,666
2039		3,338		—		—		—		3,338
2040		635		—		—		—		635
	$	52,064	$	15,728	$	2,968	$	62	$	70,822

U.S. loss carryforwards for tax years beginning in 2018 of $2,123, Canadian capital loss carryforwards of $102,057 and Australian NOLs of $58,848, which do not expire, are not included in the previous table.