Condensed Consolidated Statements of Cash Flows and Supplemental Cash Flow Information (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities:
Net loss	$ (8,008)	$ (10,583)
Reconciliation of net loss to cash used in operations:
Accretion of asset retirement obligations	337	308
Amortization of debt discount	1,354	1,183
Amortization of convertible loan establishment fee	$ 75	75
Change in fair value of derivative liability		(1,605)
Decrease in restoration and reclamation accrual	$ (129)	(132)
Depreciation and amortization	252	246
Stock compensation expense	794	$ 737
Gain on disposal of uranium properties	(4,916)
Gain on disposal of fixed assets	$ (18)
Other non-cash items		$ 291
Effect of changes in operating working capital items:
(Increase)/decrease in receivables	$ (1)	45
Increase in prepaid and other current assets	(96)	(273)
Increase in payables, accrued liabilities and deferred credits	1,875	60
Net Cash Used In Operating Activities	(8,481)	$ (9,648)
Cash Flows From Investing Activities:
Increases in notes receivable	(1,283)
Purchases of equipment	(12)	$ (7)
Proceeds from disposal of property, plant and equipment	2,518
Net Cash Used In Investing Activities	$ 1,223	$ (7)
Cash Flows From Financing Activities:
Proceeds from convertible loan		5,000
Payments on borrowings	$ (4)	(8)
Issuance of common stock, net	5,654	11,519
Payment of minimum withholding taxes on net share settlements of equity awards	(126)	(87)
Net cash Provided By Financing Activities	5,524	16,424
Net increase/(decrease) in cash and cash equivalents	(1,734)	6,769
Cash and cash equivalents, beginning of period	5,570	1,117
Cash and Cash Equivalents, End of Period	$ 3,836	7,886
Cash Paid During the Period for:
Interest		21
Supplemental Non-Cash Information with Respect to Investing and Financing Activities:
Common stock issued for payment of convertible loan fees and interest	$ 541	676
Common stock issued under stock-based compensation plans	667	334
Total Non-Cash Investing and Financing Activities for the Period	$ 1,208	$ 1,010