Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Operating Expenses:
Mineral property expenses	$ (955)	$ (1,316)	$ (2,706)	$ (3,637)
General and administrative expenses	(1,803)	(1,700)	(5,662)	(4,976)
Acquisition costs			(333)
Accretion of asset retirement obligations	(133)	(132)	(401)	(395)
Depreciation and amortization	(27)	(27)	(94)	(104)
Impairment of uranium properties			(17,968)
Total operating expenses	(2,918)	(3,175)	(27,164)	(9,112)
Non-Operating Income/(Expenses):
Loss on sale of marketable securities	(391)		(484)
Loss on extinguishment of convertible debt				(39)
Gain on disposal of uranium properties				4,927
Interest income	167	186	513	424
Other income	5	6	123	22
Total other (expense)/income	(219)	192	152	5,334
Net Loss	(3,137)	(2,983)	(27,012)	(3,778)
Other Comprehensive Income (Loss)
Unrealized fair value increase (decrease) on marketable securities	279	(126)	(777)	(287)
Transfer to realized loss upon sale of available-for sale securities	391		484
Comprehensive Loss	$ (2,467)	$ (3,109)	$ (27,305)	$ (4,065)
BASIC AND DILUTED LOSS PER SHARE	$ (0.06)	$ (0.12)	$ (0.68)	$ (0.16)
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING	51,118,498	25,037,203	39,750,245	23,763,842