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

3 Months Ended

Mar. 31, 2019

Supplemental Cash Flow Information [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued liabilities and other consist of the following:

In thousands	March 31, 2019		December 31, 2018
Accrued salaries and wages	$	16,190	$	22,229
Income and mining taxes	8,825		16,474
Silvertip contingent consideration	49,455		25,000
Accrued operating costs	6,179		13,688
Taxes other than income and mining	2,974		3,639
Accrued interest payable	5,173		1,589
Operating lease liabilities	13,340		$	—
Accrued liabilities and other	$	102,136	$	82,619

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 months ended March 31, 2019 and 2018:

In thousands	March 31, 2019		March 31, 2018
Cash and cash equivalents	$	69,033	$	159,643
Restricted cash equivalents	2,989		12,458
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	$	72,022	$	172,101