Condensed Consolidated Statements of Cash Flows and Supplemental Cash Flow Information (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating Activities:
Net loss	$ (8,313,000)	$ (6,589,000)
Reconciliation of net loss to cash used in operations:
Accretion of asset retirement obligations	225,000	102,000
Amortization of debt discount	899,000	598,000
Amortization of convertible loan establishment fee	$ 50,000	50,000
Change in fair value of derivative liability		(1,460,000)
Decrease in restoration and reclamation accrual	$ (88,000)	(147,000)
Depreciation and amortization	169,000	178,000
Stock compensation expense	625,000	$ 463,000
Gain on disposal of fixed assets	$ (18,000)
Other non-cash items		$ 24,000
Effect of changes in operating working capital items:
(Increase)/decrease in receivables	$ (2,000)	19,000
(Increase)/ decrease in prepaid and other current assets	50,000	(50,000)
Increase in payables, accrued liabilities and deferred credits	568,000	30,000
Net Cash Used In Operating Activities	(5,835,000)	$ (6,782,000)
Cash Flows From Investing Activities:
Increases in notes receivable	(780,000)
Purchases of equipment	(12,000)	$ (4,000)
Proceeds from disposal of property, plant and equipment	18,000
Net Cash Used In Investing Activities	$ (774,000)	$ (4,000)
Cash Flows From Financing Activities:
Proceeds from convertible loan		5,000,000
Payments on borrowings	$ (4,000)	(6,000)
Issuance of common stock, net	5,654,000	11,183,000
Payment of minimum withholding taxes on net share settlements of equity awards	(126,000)	(87,000)
Net cash Provided By Financing Activities	5,524,000	16,090,000
Net increase/(decrease) in cash and cash equivalents	(1,085,000)	9,304,000
Cash and cash equivalents, beginning of period	5,570,000	1,117,000
Cash and Cash Equivalents, End of Period	$ 4,485,000	10,421,000
Cash Paid During the Period for:
Interest		6,000
Supplemental Non-Cash Information With Respect to Investing and Financing Activities:
Common stock issued for payment of convertible loan fees and interest	$ 380,000	501,000
Common stock issued under stock-based compensation plans	283,000	192,000
Total Non-Cash Investing and Financing Activities for the Period	$ 663,000	$ 693,000