Income and Mining Taxes (Tables)

9 Months Ended

Sep. 30, 2015

Income Tax Disclosure [Abstract]

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

	Three months ended September 30,												Nine months ended September 30,
	2015						2014						2015						2014
In thousands	Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit
United States	$	(16,168	)	$	(1,080	)	$	(14,954	)	$	739		$	(46,640	)	$	1,123		$	(75,168	)	$	447
Argentina	(731		)	(2		)	(935		)	1,539			(2,083		)	(3		)	(3,828		)	5,622
Mexico	(1,412		)	11,951			(283		)	17,003			(16,666		)	11,234			(28,999		)	20,831
Bolivia	(4,483		)	(1,029		)	3,199			(2,969		)	(8,081		)	(2,240		)	11,848			(7,937		)
Other jurisdictions	315			(1,580		)	(144		)	271			834			(1,663		)	651			(313		)
	$	(22,479	)	$	8,260		$	(13,117	)	$	16,583		$	(72,636	)	$	8,451		$	(95,496	)	$	18,650