Other, Net (Tables)

12 Months Ended

Dec. 31, 2015

Other Income and Expenses [Abstract]

Schedule of Other Operating Cost and Expense, by Component

Other, net consists of the following:

	Year ended December 31,
In thousands	2015			2014			2013
Impairment of equity securities	$	(2,346	)	$	(6,593	)	$	(18,308	)
Gain on extinguishment of Senior Notes	16,187			—			—
Foreign exchange gain (loss)	(15,769		)	470			(189		)
Gain on termination of reclamation bonds	—			—			8,519
Other	1,913			905			4,993
Other, net	$	(15	)	$	(5,218	)	$	(4,985	)