Common Stock (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands												1 Months Ended	6 Months Ended		12 Months Ended
	Jun. 07, 2016	Jun. 03, 2016	Apr. 08, 2016	Apr. 04, 2016	Feb. 04, 2016	Feb. 03, 2016	Jan. 08, 2016	Dec. 18, 2015	Nov. 17, 2015	Mar. 06, 2015	Oct. 31, 2011	Feb. 28, 2014	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Mar. 07, 2016
Common stock, shares outstanding													7,518,857		4,522,186
Common stock, shares authorized													100,000,000		100,000,000
Proceeds from direct offering				$ 1,250	$ 800			$ 6,100		$ 6,100		$ 9,300
Purchase of common stock													$ 5,108	$ 5,654
Number of common stock issuance during the period													$ 4,588
Anatolia Energy Limited [Member]
Common stock issued for acquisition related fees, shares							117,097						47,229
Shares issued price per share							$ 6.00						$ 1.60
Common stock issued for acquisition related fees							$ 700						$ 100
Common Stock Purchase Agreement [Member]
Sale of common stock, shares													1,000,000
Proceeds from sales of common stock													$ 1,700
Common Stock Purchase Agreement [Member] | August 11, 2016 [Member]
Proceeds from future sale of equity													8,900
Available for future sales													$ 12,000
Common Stock Purchase Agreement One [Member]
Sale of common stock, shares													995,100
Proceeds from sales of common stock													$ 1,400
ATM Sales Agreement [Member]
Available for future sales													4,500
ATM Sales Agreement [Member] | August 11, 2016 [Member]
Available for future sales													$ 4,500
ATM Sales Agreement [Member] | BTIG, LLC [Member]
Sale of common stock, shares													599,896
Proceeds from direct offering									$ 6,000		$ 15,000
Proceeds from sales of common stock													$ 1,400
Percentage of commission to be paid on gross proceeds											3.00%
ATM Sales Agreement [Member] | BTIG, LLC [Member] | August 11, 2016 [Member]
Proceeds from sales of common stock													4,500
Proceeds from future sale of equity													$ 15,000
Option Agreement [Member] | Aspire Capital [Member]
Number of common stock shares issued during the period						75,000
Agreement term						24 months
Purchase of common stock						$ 10,000
Number of common stock issuance during the period						$ 300
Loan Agreement [Member] | Resource Capital Fund V LP [Member]
Issuance of common stock for payment of accrued interest and fees, shares													38,086
Issuance of common stock for payment of accrued interest and fees															$ 200
URI and Aspire Capital [Member]
Sale of common stock, shares				375,000
Proceeds from direct offering				$ 1,200
Sale of stock price per share				$ 2.17
Pre-funded common stock purchase warrants				200,000
Pre-funded warrants price per share				$ 2.16
Warrants exercise price per share				$ 0.01
Warrants term				3 years
URI and Aspire Capital [Member] | Stock Purchase Agreements [Member]
Sale of common stock, shares						296,666
Proceeds from direct offering						$ 800
Aspire Capital [Member]
Number of common stock shares issued during the period		200,000
Aspire Capital [Member] | Common Stock Purchase Agreement [Member]
Number of common stock shares issued during the period			240,000
Agreement term			30 months
Purchase of common stock	$ 5,000		$ 12,000
Maximum [Member]
Common stock, shares outstanding																61,800,000
Common stock, shares authorized																200,000,000
Maximum [Member] | ATM Sales Agreement [Member]
Proceeds from direct offering													$ 15,000
Minimum [Member]
Common stock, shares outstanding																5,200,000
Common stock, shares authorized																100,000,000