Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities:
Net (loss) income	$ (32,896)	$ 23,220
Non-cash elements included in net (loss) income:
Depreciation, depletion and amortization	106,743	139,800
Write-down of inventory	2,159	6,524
Fair value adjustments, net	3,486	(7,978)
Provision for reclamation and closure costs	4,789	7,821
Stock compensation	4,298	4,774
Deferred income taxes	(17,828)	(17,886)
Foreign exchange (gain) loss	(8,353)	615
Other non-cash items, net	2,454	1,167
Change in assets and liabilities:
Accounts receivable	34,788	(3,798)
Inventories	(19,472)	22,372
Other current and non-current assets	(3,420)	1,650
Accounts payable, accrued and other current liabilities	(21,708)	(14,689)
Accrued payroll and related benefits	1,679	(1,829)
Accrued taxes	(2,652)	2,730
Accrued reclamation and closure costs and other non-current liabilities	(297)	2,489
Cash provided by operating activities	53,770	166,982
Investing activities:
Additions to properties, plants, equipment and mineral interests	(93,237)	(80,210)
Change in restricted cash	2,011	0
Proceeds from sale of investments	9,375	1,811
Proceeds from disposition of properties, plants and equipment	748	562
Purchases of investments	(30,540)	0
Acquisitions, net	8,952	0
Pre-acquisition advance to Alexco	(25,000)	0
Purchase of carbon credits	0	(200)
Net cash used in investing activities	(127,691)	(78,037)
Financing activities:
Proceeds from sale of common stock, net	4,542	0
Acquisition of treasury stock	(3,677)	(4,525)
Dividends paid to common and preferred stockholders	(10,549)	(17,169)
Credit facility fees paid	(517)	(108)
Draw on revolving credit facility	25,000
Repayments of finance leases	(5,222)	(5,598)
Net cash provided by (used in) financing activities	9,577	(27,400)
Effect of exchange rates on cash	(804)	(471)
Net (decrease) increase in cash, cash equivalents and restricted cash	(65,148)	61,074
Cash, cash equivalents and restricted cash at beginning of period	211,063	130,883
Cash, cash equivalents and restricted cash at end of period	145,915	191,957
Supplemental disclosure of cash flow information:
Cash paid for interest	37,179	37,173
Cash paid for income and mining taxes, net	13,061	10,299
Significant non-cash investing and financing activities:
Addition of finance lease obligations and right-of-use assets	9,692	4,006
Common stock issued to Alexco Resource Corp. shareholders	68,733	0
Common stock issued to settle acquired silver stream	135,000	0
Common stock issued to pension plans	$ 5,570	$ 22,250