Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 190,904	$ 129,830
Accounts receivable:
Trade	32,821	27,864
Other, net	10,152	11,329
Inventories:
Concentrates, doré, and stockpiled ore	17,594	57,567
Materials and supplies	40,845	38,608
Derivative assets	5,220	3,470
Other current assets	12,744	15,644
Total current assets	310,280	284,312
Investments	8,030	15,148
Restricted cash	1,053	1,053
Properties, plants, equipment and mineral interests, net	2,331,018	2,378,074
Operating lease right-of-use assets	8,201	10,628
Deferred income taxes	5,576	2,912
Non-current derivatives assets	6,748	4,558
Other non-current assets and deferred charges	3,511	3,525
Total assets	2,674,417	2,700,210
Current liabilities:
Accounts payable and accrued liabilities	62,571	68,516
Accrued payroll and related benefits	26,493	31,807
Accrued taxes	8,557	5,774
Finance leases	5,637	6,491
Operating leases	2,385	3,008
Accrued reclamation and closure costs	11,036	5,582
Accrued interest	5,221	14,157
Current derivatives liability	4,179	11,737
Other current liabilities	103	138
Total current liabilities	126,182	147,210
Finance leases	8,540	9,274
Operating leases	5,820	7,634
Accrued reclamation and closure costs	108,670	110,466
Long-term debt	507,712	507,242
Deferred tax liability	142,750	156,091
Pension liability	26,229	44,144
Derivatives liabilities	752	18
Other non-current liabilities	4,787	4,346
Total liabilities	931,442	986,425
Commitments and contingencies (Notes 5, 8, 9, and 11)
Preferred stock, 5,000,000 shares authorized: Series B preferred stock, $0.25 par value, 157,816 shares issued and outstanding, liquidation preference — $7,891	39	39
Common stock, $0.25 par value, 750,000,000 authorized shares; issued September 30, 2021 — 545,371,827 shares and December 31, 2020 — 538,487,415 shares	136,350	134,629
Capital surplus	2,032,334	2,003,576
Accumulated deficit	(362,023)	(368,074)
Accumulated other comprehensive loss	(35,704)	(32,889)
Less treasury stock, at cost; September 30, 2021 — 7,395,295 and December 31, 2020 — 6,821,044 shares issued and held in treasury	(28,021)	(23,496)
Total shareholders’ equity	1,742,975	1,713,785
Total liabilities and shareholders’ equity	$ 2,674,417	$ 2,700,210