Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ (35,040)	$ 22,973	$ (22,770)	$ 26,948
Add (deduct) non-cash items
Depreciation, depletion and amortization	57,653	61,024	108,089	113,616
Accretion of discount on debt and other assets, net	484	808	1,531	1,605
Accretion of royalty obligation	4,139	5,492	7,809	10,072
Deferred income taxes	12,123	9,690	19,548	17,368
Fair value adjustments, net	(65,754)	(17,759)	(81,795)	4,018
Gain (loss) on foreign currency transactions	148	70	(317)	369
Proceeds From Settlement	22,046	0	22,046	0
Share-based compensation	1,617	1,033	2,713	3,170
Loss on sale of assets	(264)	264	(1,132)	264
Other than temporary impairment of marketable securities	17,192	0	17,227	0
Loss on impairment	86	4,813	205	4,813
Other non-cash charges	0	(40)	0	(40)
Changes in operating assets and liabilities:
Receivables and other current assets	4,401	10,319	8,647	7,365
Prepaid expenses and other	2,930	(2,857)	411	1,916
Inventories	31,483	3,097	10,990	(21,625)
Accounts payable and accrued liabilities	10,094	14,276	(16,930)	(39,655)
CASH PROVIDED BY OPERATING ACTIVITIES	63,338	113,203	76,272	130,204
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(683)	(6,831)	(5,332)	(7,866)
Proceeds from sales and maturities of short term investments	1,522	683	6,344	20,701
Capital expenditures	(27,201)	(32,238)	(40,028)	(63,885)
Payments to Acquire Businesses, Net of Cash Acquired	(101,648)	0	(113,214)	0
Other	254	995	1,209	1,180
CASH USED IN INVESTING ACTIVITIES	(127,756)	(37,391)	(151,021)	(49,870)
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	(1,857)	(8,794)	(57,197)	(14,244)
Payments on gold production royalty	(15,480)	(19,287)	(30,929)	(40,660)
Payments for Repurchase of Common Stock	0	0	(12,557)	0
Other	(25)	(217)	(477)	(1,045)
CASH USED IN FINANCING ACTIVITIES:	(17,362)	(28,298)	198,840	(55,949)
INCREASE IN CASH AND CASH EQUIVALENTS	(81,780)	47,514	124,091	24,385
Cash and cash equivalents at beginning of period	331,311	151,883	125,440	175,012
Cash and cash equivalents at end of period	$ 249,531	$ 199,397	$ 249,531	$ 199,397