Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 249,531	$ 125,440
Short term investments	0	999
Receivables	64,607	62,438
Ore on leach pad	28,880	22,991
Metal and other inventory	148,286	170,670
Deferred tax assets	2,620	2,458
Restricted assets	660	396
Prepaid expenses and other	17,945	20,790
Total Current Assets	512,529	406,182
NON-CURRENT ASSETS
Property, plant and equipment, net	660,333	683,860
Mining properties, net	2,357,689	1,991,951
Ore on leach pad, non-current portion	26,861	21,356
Restricted assets	24,468	24,970
Marketable securities	16,008	27,065
Receivables, non-current portion	38,539	48,767
Debt issuance costs, net	11,890	3,713
Deferred tax assets	969	955
Other	17,430	12,582
TOTAL ASSETS	3,666,716	3,221,401
CURRENT LIABILITIES
Accounts payable	57,446	57,482
Accrued liabilities and other	9,369	10,002
Accrued income taxes	8,662	27,108
Accrued payroll and related benefits	15,576	21,306
Accrued interest payable	10,237	478
Current portion of debt and capital leases	5,485	55,983
Current portion of royalty obligation	44,605	65,104
Current portion of reclamation and mine closure	473	668
Deferred tax liabilities	121	121
Total Current Liabilities	151,974	238,252
NON-CURRENT LIABILITIES
Long-term debt and capital leases	306,578	3,460
Non-current portion of royalty obligation	86,304	141,879
Reclamation and mine closure	35,708	34,670
Deferred tax liabilities	711,550	577,488
Other long-term liabilities	23,110	27,372
Total Noncurrent Liabilities	1,163,250	784,869
COMMITMENTS AND CONTINGENCIES (Notes 11, 12, 13, 16, 17 and 20)
SHAREHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 101,567,355 at June 30, 2013 and 90,342,338 at December 31, 2012	1,016	903
Additional paid-in capital	2,770,953	2,601,254
Accumulated deficit	(418,926)	(396,156)
Accumulated other comprehensive loss	(1,551)	(7,721)
Total Shareholders' Equity	2,351,492	2,198,280
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 3,666,716	$ 3,221,401