Additional Balance Sheet Detail and Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2018

Supplemental Cash Flow Information [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued liabilities and other consist of the following:

In thousands	September 30, 2018		December 31, 2017
Accrued salaries and wages	$	18,677	$	26,559
Income and mining taxes	1,252		25,788
Silvertip contingent consideration	24,847		24,393
Accrued operating costs	11,883		12,323
Taxes other than income and mining	3,378		4,354
Accrued interest payable	5,363		1,513
Accrued liabilities and other	$	65,400	$	94,930

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

he following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the statement of financial position that sum to the total of the same such amounts shown in the statement of cash flows for the three and nine months ended September 30, 2018 and 2017:

In thousands	September 30, 2018		September 30, 2017
Cash and cash equivalents	$	104,746	$	195,654
Restricted cash equivalents	12,534		11,360
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	117,280		207,014