Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 75,923	$ 62,452
Accounts receivable:
Trade	26,003	11,952
Taxes	11,847	20,048
Other, net	3,851	6,421
Inventories:
Concentrates, doré, and stockpiled ore	46,676	30,364
Materials and supplies	35,866	35,849
Prepaid taxes	5,148	107
Other current assets	9,567	11,931
Total current assets	214,881	179,124
Non-current investments	12,162	6,207
Non-current restricted cash and investments	1,053	1,025
Properties, plants, equipment and mineral interests, net	2,354,883	2,423,698
Operating lease right-of-use assets	13,220	16,381
Non-current deferred income taxes	3,181	3,537
Other non-current assets and deferred charges	4,028	7,336
Total assets	2,603,408	2,637,308
Current liabilities:
Accounts payable and accrued liabilities	40,789	57,716
Accrued payroll and related benefits	24,561	26,916
Accrued taxes	8,451	4,776
Current portion of finance leases	5,745	5,429
Current portion of operating leases	4,162	5,580
Accrued interest	12,914	5,804
Current derivatives liabilities	13,779	6,170
Other current liabilities	126	2
Current portion of accrued reclamation and closure costs	5,109	4,581
Total current liabilities	115,636	116,974
Non-current finance leases	7,057	7,214
Non-current operating leases	9,079	10,818
Accrued reclamation and closure costs	99,449	103,793
Long-term debt - Senior Notes	468,252	504,729
Long-term debt - revolving credit facility	50,000	0
Non-current deferred tax liability	128,677	138,282
Non-current pension liability	58,848	56,219
Non-current derivatives liabilities	5,282	1,044
Other non-current liabilities	2,435	5,812
Total liabilities	944,715	944,885
Commitments and contingencies (Notes 2, 4, 7, 9, and 11)
STOCKHOLDERS' EQUITY
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 June 30, 2020 — 534,660,072 shares and December 31, 2019 — 529,182,994 shares	133,699	132,292
Capital surplus	1,982,400	1,973,700
Accumulated deficit	(387,688)	(353,331)
Accumulated other comprehensive loss	(46,261)	(37,310)
Less treasury stock, at cost; June 30, 2020 — 6,821,044 shares and December 31, 2019 — 6,287,271 shares issued and held in treasury	(23,496)	(22,967)
Total stockholders’ equity	1,658,693	1,692,423
Total liabilities and stockholders’ equity	$ 2,603,408	$ 2,637,308