Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (46,265)	$ (15,821)	$ (69,035)	$ 11,127
Add (deduct) non-cash items
Depreciation, depletion and amortization	60,874	52,844	168,963	166,460
Accretion of discount on debt and other assets, net	509	585	2,040	1,683
Accretion of royalty obligation	2,889	4,276	10,698	14,348
Deferred income taxes	(1,869)	(4,944)	17,680	12,425
Fair value adjustments, net	20,308	35,270	(61,487)	39,288
Gain (loss) on foreign currency transactions	(511)	(1,577)	(828)	(1,208)
Litigation settlement	0	0	22,046	0
Share-based compensation	373	3,364	3,085	6,534
(Gain) loss on sale of assets	(7)	108	(1,139)	372
Other than temporary impairment of marketable securities	870	605	18,097	605
Loss on impairment	0	1,243	205	6,016
Other non-cash charges	136	1,331	136	1,838
Changes in operating assets and liabilities:
Receivables and other current assets	(2,132)	(5,648)	6,515	1,717
Prepaid expenses and other	(14,306)	(2,481)	(13,894)	(564)
Inventories	11,592	(13,762)	22,582	(35,387)
Accounts payable and accrued liabilities	(5,657)	24,342	(22,588)	(15,313)
CASH PROVIDED BY OPERATING ACTIVITIES	26,804	79,735	103,076	209,941
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(2,689)	(4,093)	(8,022)	(11,959)
Proceeds from sales and maturities of short term investments	27	337	6,371	21,038
Capital expenditures	(32,726)	(29,972)	(72,754)	(93,857)
Acquisition of Orko Silver Corporation	0	0	(113,214)	0
Other	(48)	479	1,163	1,659
CASH USED IN INVESTING ACTIVITIES	(35,436)	(33,249)	(186,456)	(83,119)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of notes and bank borrowings	0	0	300,000	0
Payments on long-term debt, capital leases, and associated costs	(1,824)	(80,318)	(59,021)	(94,562)
Payments on gold production royalty	(12,619)	(17,458)	(43,548)	(58,119)
Reductions of restricted assets associated with the Kensington Term Facility	0	4,645	0	4,645
Share repurchases	(14,995)	(9,971)	(27,552)	(9,971)
Other	(27)	134	(505)	(912)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES:	(29,465)	(102,968)	169,374	(158,919)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(38,097)	(56,482)	85,994	(32,097)
Cash and cash equivalents at beginning of period	249,531	199,397	125,440	175,012
Cash and cash equivalents at end of period	$ 211,434	$ 142,915	$ 211,434	$ 142,915