Subsequent Events (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands							1 Months Ended	3 Months Ended
	Apr. 08, 2016	Apr. 07, 2016	Apr. 04, 2016	Feb. 04, 2016	Dec. 18, 2015	Mar. 06, 2015	Feb. 28, 2014	Mar. 31, 2016	Mar. 31, 2015
Gross proceeds from direct offering				$ 800	$ 6,100	$ 6,100	$ 9,300
Purchase of common stock								$ 1,193	$ 5,619
Subsequent Event [Member] | Common Stock Purchase Agreement [Member] | Laramide Resources Ltd [Member]
Proceeds from sale properties		$ 5,250
Promissory note		$ 7,250
Note term		3 years
Note initial interest rate		5.00%
Note interest rate increases		10.00%
Note principal payments		$ 2,400
Note payable and due date description		Principal payments of approximately $2.4 million are due and payable on the anniversary of the closing of the transaction in each of 2017, 2018 and 2019. Interest will be payable on a quarterly basis, provided however that no interest will be payable prior to the first principal payment in 2017.
Purchase price of assets		$ 5,250
Subsequent Event [Member] | URI and Aspire Capital [Member]
Number of shares sold by company during peirod			375,000
Sale of stock price per share			$ 2.17
Pre-funded common stock purchase warrants			200,000
Pre-funded warrants price per share			$ 2.16
Gross proceeds from direct offering			$ 1,250
Proceeds from sale of pre-funded warrants			$ 430
Warrants exercise price per share			$ 0.01
Warrants term			3 years
Subsequent Event [Member] | Aspire Capital [Member] | Common Stock Purchase Agreement [Member]
Purchase of common stock	$ 12,000
Agreement term	30 months
Number of common stock shares issued during the period	240,000