Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 215,715	$ 62,452
Accounts receivable:
Trade	6,062	11,952
Taxes	12,547	20,048
Other, net	9,188	6,421
Inventories:
Concentrates, doré, and stockpiled ore	39,450	30,364
Materials and supplies	35,672	35,849
Prepaid taxes	5,114	107
Other current assets	18,794	11,931
Total current assets	342,542	179,124
Non-current investments	4,919	6,207
Non-current restricted cash and investments	1,053	1,025
Properties, plants, equipment and mineral interests, net	2,393,187	2,423,698
Operating lease right-of-use assets	14,909	16,381
Non-current deferred income taxes	3,007	3,537
Other non-current assets and deferred charges	4,507	7,336
Total assets	2,764,124	2,637,308
Current liabilities:
Accounts payable and accrued liabilities	49,437	57,716
Accrued payroll and related benefits	34,478	26,916
Accrued taxes	5,842	4,776
Current portion of finance leases	5,391	5,429
Current portion of operating leases	4,792	5,580
Current portion of accrued reclamation and closure costs	5,277	4,581
Accrued interest	4,305	5,804
Other current liabilities	7,661	6,172
Total current liabilities	117,183	116,974
Non-current finance leases	5,810	7,214
Non-current operating leases	10,139	10,818
Accrued reclamation and closure costs	97,509	103,793
Long-term debt - Senior Notes	469,021	504,729
Long-term debt - revolving credit facility	210,000	0
Non-current deferred tax liability	126,237	138,282
Non-current pension liability	57,309	56,219
Other non-current liabilities	14,033	6,856
Total liabilities	1,107,241	944,885
Commitments and contingencies (Notes 2, 4, 7, 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 March 31, 2020 — 529,534,568 shares and December 31, 2019 — 529,182,994 shares	132,381	132,292
Capital surplus	1,976,033	1,973,700
Accumulated deficit	(371,958)	(353,331)
Accumulated other comprehensive loss	(56,645)	(37,310)
Less treasury stock, at cost; March 31, 2020 and December 31, 2019 - 6,287,271 shares issued and held in treasury	(22,967)	(22,967)
Total stockholders’ equity	1,656,883	1,692,423
Total liabilities and stockholders’ equity	$ 2,764,124	$ 2,637,308