Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Cash flows from operating activities:
Net loss	$ (5,043)	$ (217,805)	$ (10,701)	$ (224,065)	$ (240,380)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization and depreciation	778	2,529	1,624	5,097
Accretion of asset retirement obligation			98	78
Foreign currency (gain) loss on loss contingency			16	(260)
Foreign currency gain on deferred tax liability				423
Impairment of goodwill		11,180		11,180
Impairment of long lived assets		238,020		238,020
Asset write off			120	60
Write off of loss contingency			(859)	(299)
Realized loss on marketable securities				133
Gain on sale of assets, net			(1)	(3,236)
Income tax provision		(45,017)	0	(47,495)
Stock compensation			586	979
Changes in operating assets and liabilities:
(Increase) decrease in trade accounts receivable			25	(21)
Decrease in prepaid expense and other assets			198	241
Decrease in inventories			65	1,564
(Increase) decrease in value added tax recoverable, net			(10)	1,674
Decrease in reclamation liability			(112)	(6)
Increase (decrease) in accounts payable and accrued liabilities			190	(767)
Increase (decrease) in deferred leasehold payments			21	(88)
Net cash used in operating activities			$ (8,740)	$ (16,788)