Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 60,856	$ 186,107
Investments	0	33,758
Accounts receivable:
Trade	12,947	14,805
Taxes	19,316	10,382
Other, net	7,612	7,003
Inventories:
Concentrates, doré, and stockpiled ore	42,464	29,366
Materials and supplies	33,624	26,100
Other current assets	21,510	13,715
Total current assets	198,329	321,236
Non-current investments	7,190	7,561
Non-current restricted cash and investments	1,010	1,032
Properties, plants, equipment and mineral interests, net	2,487,429	1,999,311
Non-current deferred income taxes	1,601	1,509
Other non-current assets and deferred charges	14,699	14,509
Total assets	2,710,258	2,345,158
Current liabilities:
Accounts payable and accrued liabilities	65,755	46,549
Accrued payroll and related benefits	29,488	31,259
Accrued taxes	8,274	5,919
Current portion of capital leases	6,069	5,608
Current portion of accrued reclamation and closure costs	6,621	6,679
Accrued interest	15,044	5,745
Other current liabilities	1,205	10,371
Total current liabilities	132,456	112,130
Capital leases	8,638	6,193
Accrued reclamation and closure costs	99,314	79,366
Long-term debt	534,067	502,229
Non-current deferred tax liability	164,928	124,352
Non-current pension liability	44,097	46,628
Other noncurrent liabilities	4,689	12,983
Total liabilities	988,189	883,881
Commitments and contingencies (Notes 3, 5, 8, 10, and 12)
SHAREHOLDERS’ 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, authorized 750,000,000 shares; issued and outstanding 2018 — 479,909,466 shares and 2017 — 399,176,425 shares	121,283	100,926
Capital surplus	1,872,946	1,619,816
Accumulated deficit	(223,280)	(218,089)
Accumulated other comprehensive loss	(28,183)	(23,373)
Less treasury stock, at cost; 2018 — 5,226,791 and 2017 — 4,529,450 shares issued and held in treasury	(20,736)	(18,042)
Total shareholders’ equity	1,722,069	1,461,277
Total liabilities and shareholders’ equity	$ 2,710,258	$ 2,345,158