Condensed Consolidated Statements of Cash Flows and Supplemental Cash Flow Information (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating Activities:
Net income/(loss)	$ 1,845	$ (4,273)
Reconciliation of net loss to cash used in operations:
Accretion of asset retirement obligations	132	120
Amortization of debt discount	30	450
Amortization of convertible loan establishment fee		25
Amortization of notes receivable discount	(175)
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	(14)	(39)
Depreciation and amortization	38	82
Stock compensation expense	22	183
Gain on disposal of uranium properties	(4,422)
Amortization of non-cash investor relations fees	25
Effect of changes in operating working capital items:
Increase in receivables	(5)	(62)
Increase in prepaid and other current assets	(151)	(168)
Increase/(decrease) in payables, accrued liabilities and deferred credits	(651)	1,028
Net Cash Used In Operating Activities	(3,287)	(2,205)
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	13,388	1,193
Payment of minimum withholding taxes on net share settlements of equity awards	(1)
Net Cash Provided By Financing Activities	7,887	1,193
Net increase/(decrease) in cash and cash equivalents	6,573	(771)
Cash and cash equivalents, beginning of period	3,309	865
Cash and Cash Equivalents, End of Period	9,882	94
Cash paid during the period for:
Interest	227
Supplemental Non-Cash Information With Respect to Investing and Financing Activities:
Common stock issued for settlement of accounts payable		703
Common stock issued for payment of convertible loan interest and fees		$ 242