Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ (15,821)	$ 31,060	$ 11,127	$ 82,135
Add (deduct) non-cash items
Depreciation, depletion and amortization	52,844	58,652	166,460	166,334
Accretion of discount on debt and other assets, net	585	516	1,683	1,460
Accretion of royalty obligation	4,276	4,990	14,348	16,027
Deferred income taxes	(4,944)	3,084	12,425	13,177
Loss on debt extinguishments	0	784	0	1,640
Fair value adjustments, net	35,270	50,767	39,288	71,360
Gain (loss) on foreign currency transactions	(1,577)	137	(1,208)	(600)
Share-based compensation	3,364	457	6,534	5,261
(Gain) loss on Disposition of Assets	108	4	372	(1,220)
Loss on impairment	1,848	0	6,621	0
Other non-cash charges	1,331	506	1,838	1,337
Changes in operating assets and liabilities:
Receivables and other current assets	(5,648)	(10,513)	1,717	(23,492)
Prepaid expenses and other	(2,481)	(8,697)	(564)	(7,362)
Inventories	(13,762)	23,234	(35,387)	(12,834)
Accounts payable and accrued liabilities	24,342	26,930	(15,313)	15,538
CASH PROVIDED BY OPERATING ACTIVITIES	79,735	181,911	209,941	328,761
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(4,093)	(8,804)	(11,959)	(21,914)
Proceeds from sales and maturities of short term investments	337	495	21,038	3,855
Capital expenditures	(29,972)	(38,099)	(93,857)	(79,780)
Other	479	1,397	1,659	1,670
CASH USED IN INVESTING ACTIVITIES	(33,249)	(45,011)	(83,119)	(96,169)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of notes and bank borrowings	0	0	0	27,500
Payments on long-term debt, capital leases, and associated costs	(80,318)	(16,405)	(94,562)	(51,640)
Payments on gold production royalty	(17,458)	(19,510)	(58,119)	(51,569)
Payments on gold lease facility	0	0	0	(13,800)
Additions to restricted assets associated with the Kensington Term Facility	4,645	0	4,645	(1,325)
Payments for Repurchase of Common Stock	(9,971)	0	(9,971)	0
Other	134	67	(912)	6
CASH USED IN FINANCING ACTIVITIES:	(102,968)	(35,848)	(158,919)	(90,828)
INCREASE IN CASH AND CASH EQUIVALENTS	(56,482)	101,052	(32,097)	141,764
Cash and cash equivalents at beginning of period			175,012	66,118
Cash and cash equivalents at end of period	$ 142,915	$ 207,882	$ 142,915	$ 207,882