Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 222,360	$ 212,175
Accounts receivable:
Trade	17,433	17,672
Other, net	9,767	20,893
Inventories:
Concentrates, doré, and stockpiled ore	20,335	27,740
Materials and supplies	20,676	21,097
Current deferred income taxes	20,352	35,734
Other current assets	7,516	8,324
Total current assets	318,439	343,635
Non-current investments	7,022	7,019
Non-current restricted cash and investments	883	5,217
Properties, plants, equipment and mineral interests, net	1,829,500	1,791,601
Non-current deferred income taxes	93,169	78,780
Other non-current assets and deferred charges	3,440	5,867
Total assets	2,252,453	2,232,119
Current liabilities:
Accounts payable and accrued liabilities	45,788	51,152
Accrued payroll and related benefits	22,586	18,769
Accrued taxes	6,319	7,881
Current portion of capital leases	8,470	8,471
Current portion of accrued reclamation and closure costs	2,236	58,425
Other current liabilities	15,643	6,781
Total current liabilities	101,042	151,479
Capital leases	10,890	14,332
Accrued reclamation and closure costs	56,793	46,766
Long-term debt	498,183	490,726
Non-current deferred tax liability	156,712	164,861
Other noncurrent liabilities	42,466	37,536
Total liabilities	866,086	905,700
Commitments and contingencies
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 500,000,000 shares; issued and outstanding 2014 — 366,888,140 shares and 2013 — 342,663,381 shares	92,261	85,896
Capital surplus	1,484,969	1,426,845
Accumulated deficit	(157,148)	(154,982)
Accumulated other comprehensive loss	(24,894)	(26,299)
Less treasury stock, at cost; 2014 — 2,151,482 and 2013 — 921,721 shares issued and held in treasury	(8,860)	(5,080)
Total shareholders’ equity	1,386,367	1,326,419
Total liabilities and shareholders’ equity	$ 2,252,453	$ 2,232,119