Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 211,434	$ 125,440
Short term investments	0	999
Receivables	74,417	62,438
Ore on leach pad	39,880	22,991
Metal and other inventory	123,537	170,670
Deferred tax assets	2,713	2,458
Restricted assets	2,015	396
Prepaid expenses and other	26,778	20,790
Total Current Assets	480,774	406,182
NON-CURRENT ASSETS
Property, plant and equipment, net	649,591	684,002
Mining properties, net	2,365,999	1,991,809
Ore on leach pad, non-current portion	31,966	21,356
Restricted assets	24,914	24,970
Marketable securities		27,065
Receivables, non-current portion	37,191	48,767
Debt issuance costs, net	11,351	3,713
Deferred tax assets	1,104	955
Other	16,411	12,582
TOTAL ASSETS	3,636,917	3,221,401
CURRENT LIABILITIES
Accounts payable	63,610	57,482
Accrued liabilities and other	9,589	10,002
Accrued income taxes	8,529	27,108
Accrued payroll and related benefits	19,295	21,306
Accrued interest payable	4,028	478
Current portion of debt and capital leases	3,868	55,983
Current portion of royalty obligation	49,069	65,104
Current portion of reclamation and mine closure	443	668
Deferred tax liabilities	121	121
Total Current Liabilities	158,552	238,252
NON-CURRENT LIABILITIES
Long-term debt and capital leases	306,372	3,460
Non-current portion of royalty obligation	90,892	141,879
Reclamation and mine closure	55,872	34,670
Deferred tax liabilities	709,910	577,488
Other long-term liabilities	23,371	27,372
Total Noncurrent Liabilities	1,186,417	784,869
COMMITMENTS AND CONTINGENCIES (Note 17)
SHAREHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 100,548,811 at September 30, 2013 and 90,342,338 at December 31, 2012	1,006	903
Additional paid-in capital	2,756,377	2,601,254
Accumulated deficit	(465,191)	(396,156)
Accumulated other comprehensive loss	(244)	(7,721)
Total Shareholders' Equity	2,291,948	2,198,280
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 3,636,917	$ 3,221,401