Income and Mining Taxes (Tables)

3 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Three months ended March 31,
	2015						2014
In thousands	Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit
United States	$	(20,707	)	$	1,886		$	(28,686	)	$	(146	)
Argentina	(696		)	(1		)	(2,204		)	4,432
Mexico	(9,672		)	(1,264		)	(16,006		)	3,721
Bolivia	(2,379		)	(1,407		)	4,692			(2,764		)
Other jurisdictions	235			718			324			(554		)
	$	(33,219	)	$	(68	)	$	(41,880	)	$	4,689