Condensed Consolidated Statements of Cash Flows and Supplemental Cash Flow Information (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities:
Net loss	$ (795)	$ (8,880)
Reconciliation of net loss to cash used in operations:
Accretion of asset retirement obligations	263	240
Amortization of debt discount	30	900
Amortization of convertible loan establishment fee		50
Amortization of notes receivable discount	(363)
Loss on extinguishment of convertible debt	39
Loss on sale of marketable securities		116
Common stock issued as payment for commitment fees		333
Costs incurred for restoration and reclamation activities	(30)	(49)
Depreciation and amortization	77	132
Stock compensation expense	38	470
Gain on disposal of uranium properties	(4,927)
Impairment of uranium properties		534
Amortization of non-cash investor relations fees	100
Effect of changes in operating working capital items:
(Increase)/decrease in receivables	(5)	47
Decrease in prepaid and other current assets	73	130
Increase/(decrease) in payables, accrued liabilities and deferred credits	(834)	737
Net Cash Used In Operating Activities	(6,334)	(5,240)
Cash Flows From Investing Activities:
Proceeds from the sale of investments		247
(Increase)/decrease in restricted cash	23	(6)
Proceeds from disposal of property, plant and equipment	1,950
Net Cash Provided By Investing Activities	1,973	241
Cash Flows From Financing Activities:
Payments on borrowings	(5,500)
Issuance of common stock, net	13,705	5,108
Payment of minimum withholding taxes on net share settlements of equity awards	(1)
Net Cash Provided By Financing Activities	8,204	5,108
Net increase in cash and cash equivalents	3,843	109
Cash and cash equivalents, beginning of period	3,309	865
Cash and Cash Equivalents, End of Period	7,152	974
Cash paid during the period for:
Interest	227	286
Supplemental Non-Cash Information With Respect to Investing and Financing Activities:
Common stock issued for settlement of accounts payable		778
Common stock issued for payment of convertible loan interest and fees		242
Common stock issued for payment of commitment fees		$ 523