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Decrease in working capital.

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Pre-acquisition operating cost.

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Prefunded warrants price per share.

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Working capital.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Date the warrants or rights are exercisable, in CCYY-MM-DD format.

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Amount of increase (decrease) of investment in debt and equity securities, measured at fair value with changes in fair value recognized in net income.

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An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

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The cash inflow associated with the amount received from entity's first offering of stock to the public.

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The cash inflow from the additional capital contribution to the entity.

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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Cash received on stock transaction after deduction of issuance costs.

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Per share or per unit amount of equity securities issued.

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Liquidity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands						6 Months Ended
	Jun. 14, 2018	Jun. 14, 2018	Sep. 27, 2017	Sep. 25, 2017	Apr. 14, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Working capital						$ 2,200		$ 3,900
Value of currently registered for sale						7,800
Notes receivable, non-current						1,242		$ 3,328
Decrease in working capital						1,700
Proceeds from issuance of common stock						4,730	$ 13,705
Cantor Fitzgerald & Co [Member] \| ATM Offering [Member]
Net proceeds from direct offering					$ 8,000
Cantor Fitzgerald & Co [Member] \| ATM Offering [Member] \| August 8, 2018 [Member]
Available for future sales					$ 7,800
Laramide Resources Ltd [Member]
Notes receivable, non-current						2,000
Decrease in fair value of securities						1,000
Alabama Graphite Corp. [Member]
Pre-acquisition operating cost						900
Aspire Capital Fund LLC [Member]
Net proceeds from direct offering	$ 2,900
Number of shares issued during period	3,717,773
Shares issued price per share	$ 0.34	$ 0.34
Proceeds from issuance of common stock	$ 1,300
Warrant exercise price	$ 0.01	$ 0.01
Warrant exercisable term	Jun. 14, 2021
Aspire Capital Fund LLC [Member] \| Common Stock Purchase Agreement [Member]
Net proceeds from direct offering				$ 22,000
Number of shares issued during period		2,725,096	1,428,571	880,000
Proceeds from issuance of common stock		$ 1,500	$ 2,000
Agreement termination date, description	The previous Common Stock Purchase Agreement ("CSPA") with Aspire Capital dated September 25, 2017 was terminated on June 14, 2018 concurrently with the launch of the registered direct offering.
Aspire Capital Fund LLC [Member] \| Common Stock Warrants [Member]
Number of warrants issued for common stock	4,968,518	4,968,518
Prefunded warrants price per share	$ 0.33	$ 0.33
Proceeds from issuance of warrant	$ 1,600
ATM Offering [Member]
Net proceeds from direct offering						$ 8,000