Income and Mining Taxes (Tables)

3 Months Ended

Mar. 31, 2014

Income Tax Disclosure [Abstract]

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

The following table summarizes the components of the Company's income and mining (expense) benefit:

	Three months ended March 31,
(in thousands)	2014			2013
United States	$	(146	)	$	(3,212	)
Argentina	4,432			73
Australia	(303		)	(105		)
Mexico	3,721			(3,673		)
Bolivia	(2,764		)	(4,328		)
Canada	(251		)	—
Income tax (expense) benefit	$	4,689		$	(11,245	)