Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 206,690	$ 125,440
Investments	0	999
Receivables	81,074	62,438
Ore on leach pads	50,495	22,991
Metal and other inventory	132,023	170,670
Deferred tax assets	35,008	2,458
Prepaid expenses and other	25,940	21,186
Current assets	531,230	406,182
NON-CURRENT ASSETS
Property, plant and equipment, net	486,273	683,860
Mining properties, net	1,751,501	1,991,951
Ore on leach pads	31,528	21,356
Restricted assets	7,014	24,970
Marketable securities	14,521	27,065
Receivables	36,574	48,767
Debt issuance costs, net	10,812	3,713
Deferred tax assets	1,189	955
Other	15,336	12,582
TOTAL ASSETS	2,885,978	3,221,401
CURRENT LIABILITIES
Accounts payable	53,847	57,482
Accrued liabilities and other	6,843	10,002
Accrued income taxes	3,119	27,108
Accrued payroll and related benefits	18,329	21,306
Accrued interest payable	9,975	478
Debt and capital leases	2,505	55,983
Royalty obligations	48,019	65,104
Reclamation and mine closure	913	668
Deferred tax liabilities	1,011	121
Current liabilities	144,561	238,252
NON-CURRENT LIABILITIES
Debt and capital leases	306,130	3,460
Royalty obligations	65,142	141,879
Reclamation and mine closure	57,515	34,670
Deferred tax liabilities	556,246	577,488
Other long-term liabilities	25,817	27,372
Non-current liabilities	1,010,850	784,869
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 102,843,003 at December 31, 2013 and 90,342,338 at December 31, 2012	1,028	903
Additional paid-in capital	2,781,164	2,601,254
Accumulated other comprehensive loss	(4,906)	(7,721)
Accumulated deficit	(1,046,719)	(396,156)
Shareholders' Equity	1,730,567	2,198,280
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 2,885,978	$ 3,221,401