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

3 Months Ended

Mar. 31, 2022

Supplemental Cash Flow Information [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued liabilities and other consist of the following:

In thousands	March 31, 2022		December 31, 2021
Accrued salaries and wages	$	22,253	$	28,408
Deferred revenue (1)	26,240		16,093
Income and mining taxes	7,987		13,856
Accrued operating costs	6,975		5,592
Unrealized losses on derivatives	1,878		1,374
Taxes other than income and mining	2,844		3,284
Accrued interest payable	3,160		8,038
Operating lease liabilities	11,101		11,301
Accrued liabilities and other	$	82,438	$	87,946

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

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the statement of financial position that total the same such amounts shown in the statement of cash flows in the three months ended March 31, 2022 and 2021:

In thousands	March 31, 2022		March 31, 2021
Cash and cash equivalents	$	73,330	$	154,066
Restricted cash equivalents	1,389		1,377
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	$	74,719	$	155,443