Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
OPERATING ACTIVITIES:
Net income	$ 3,342	$ (5,865)	$ 12,402	$ (410)
Reconciliation of net income/(loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	25,175	15,274	44,224	36,492
Amortization of loan acquisition cost	0	318	895	672
Loss/(gain) on sale of investments	25	0	(22,360)	0
Loss on extinguishment of debt	582	0	582	0
Gain/(loss) on sale of assets	(76)	2	(61)	2
Non-cash employee compensation	1,125	879	3,704	2,220
Deferred income tax expense	2,931	3,040	15,462	6,347
Fair value of derivatives loss	0	930	162	5,179
Fair value loss/(gain) on convertible debt	1,145	(6,107)	2,037	(24,292)
Accretion of asset retirement obligations	705	2,183	1,408	3,116
Reclamation expenditures	(1,847)	(7,945)	(4,422)	(11,828)
Reconciliation, Total	33,107	2,709	54,033	17,498
Changes in non-cash working capital:
Accounts receivable	1,005	(1,779)	(964)	(2,804)
Inventories	(8,492)	(15)	(10,504)	(421)
Deposits	591	245	(714)	(700)
Accounts payable and accrued liabilities	(8,546)	(2,185)	(5,528)	(18,799)
Other	(95)	(425)	(869)	(2,089)
Net cash provided by/(used in) operating activities	17,570	(1,450)	35,454	(7,315)
INVESTING ACTIVITIES:
Expenditures on mining properties	(7,326)	(9,191)	(19,863)	(18,031)
Expenditures on property, plant and equipment	(7,492)	(9,951)	(19,620)	(19,863)
Change in accounts payable and deposits on mine equipment and material	1,007	(4,077)	(2,689)	(3,184)
Cash used for equity investments	0	0	(938)	0
Proceeds from sale of assets	80	0	6,685	0
Net cash used in investing activities	(13,731)	(23,219)	(36,425)	(41,078)
FINANCING ACTIVITIES:
Principal payments on debt	(2,271)	(2,573)	(4,421)	(5,338)
Proceeds from debt agreements and equipment financing	350	3,470	7,386	3,470
Exercise of options	0	0	91	0
Other	0	26	0	158
Net cash provided by/(used in) financing activities	(1,921)	923	3,056	(1,710)
Increase/(decrease) in cash and cash equivalents	1,918	(23,746)	2,085	(50,103)
Cash and cash equivalents, beginning of period	103,811	151,661	103,644	178,018
Cash and cash equivalents, end of period	$ 105,729	$ 127,915	$ 105,729	$ 127,915