Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
CURRENT ASSETS
Cash and cash equivalents	$ 175,012	$ 66,118
Short-term investments	20,254	0
Receivables	83,497	58,880
Ore on leach pad (Note 3)	27,252	7,959
Metal and other inventory (Note 8)	132,781	118,340
Deferred tax assets (Note 14)	1,869	0
Restricted assets	60	25
Prepaid expenses and other	24,218	14,889
Total Current Assets	464,943	266,211
NON-CURRENT ASSETS
Property, plant and equipment	687,676	668,101
Mining properties (Note 11)	2,001,027	2,122,216
Ore on leach pad, non-current portion (Note 3)	6,679	10,005
Restricted assets (Note 3)	28,911	29,028
Receivables, non current	40,314	42,866
Marketable securities	19,844	0
Debt issuance costs, net	1,889	4,333
Deferred tax assets (Note 14)	263	804
Other	12,895	13,963
TOTAL ASSETS	3,264,441	3,157,527
CURRENT LIABILITIES
Accounts payable	78,590	88,321
Accrued liabilities and other	13,179	18,608
Accrued income taxes	47,803	28,397
Accrued payroll and related benefits	16,240	17,953
Accrued interest payable	559	834
Current portion of capital leases and other debt obligations	32,602	63,317
Current portion of royalty obligation (Note 12 and 17)	61,721	51,981
Current portion of reclamation and mine closure (note 13)	1,387	1,306
Total Current Liabilities	252,081	270,717
NON-CURRENT LIABILITIES
Long-term debt (Note 12)	115,861	130,067
Non-current portion of royalty obligation (Note 12 and 17)	169,788	190,334
Reclamation and mine closure (Note 13)	32,371	27,779
Deferred income taxes (Note 14)	527,573	474,264
Other long-term liabilities	30,046	23,599
Total Noncurrent Liabilities	875,639	846,043
COMMITMENTS AND CONTINGENCIES (Notes 17, 13, 15, 16,17 18, 20 and 22)
SHAREHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 150,000,000 shares,89,655,124 issued and outstanding at December 31, 2011 and 89,315,767 shares issued and outstanding at December 31, 2010	897	893
Additional paid-in capital	2,585,632	2,578,206
Accumulated deficit	(444,833)	(538,332)
Accumulated other comprehensive loss	(4,975)	0
Total Shareholders' Equity	2,136,721	2,040,767
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 3,264,441	$ 3,157,527