Additional Comprehensive Income (Loss) Detail (Tables)

9 Months Ended

Sep. 30, 2023

Other Income and Expenses [Abstract]

Schedule of Other Operating Cost and Expense, by Component

Pre-development, reclamation, and other consists of the following:

	Three Months Ended September 30,				Nine Months Ended September 30,
In thousands	2023		2022		2023		2022
COVID-19	$	14	$	294	$	92	$	1,585
Silvertip ongoing carrying costs	2,780		4,628		13,569		15,542
Asset retirement accretion	4,153		3,597		12,219		10,588
Other	1,733		730		3,738		2,124
Pre-development, reclamation and other	$	8,680	$	9,249	$	29,618	$	29,839

Schedule of Other Nonoperating Income (Expense)

Other, net consists of the following:

	Three Months Ended September 30,				Nine Months Ended September 30,
In thousands	2023		2022		2023		2022
Foreign exchange gain (loss)	$	421	$	93	$	(107)	$	(972)
Gain (loss) on sale of assets(1)	(19)		(87)		(12,650)		2,365
RMC bankruptcy distribution	—		—		1,516		—
Other	57		147		820		810
Other, net	$	459	$	153	$	(10,421)	$	2,203