Decrease in working capital.

No definition available.

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- Definition

Number of common stock shares limited to current Exchange Cap.

+ References

No definition available.

+ Details

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- Definition

Common stock issued for commitment fees, shares.

+ References

No definition available.

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- Definition

Stock purchase agreement description.

+ References

No definition available.

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- Definition

Working capital.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
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-Publisher FASB
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562

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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

No definition available.

+ Details

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 25
-Paragraph 23
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- Definition

Amount of increase (decrease) in the fair value of equity or debt securities classified as trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

+ Details

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Data Type:	num:perShareItemType
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Liquidity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended
	Sep. 27, 2017	Sep. 25, 2017	Apr. 14, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Working capital				$ 1,200		$ 3,900
Decrease in working capital				2,700
Acquisition related costs to business				(755)
Cantor Fitzgerald & Co [Member] \| ATM Offering [Member]
Net proceeds from direct offering			$ 30,000
Cantor Fitzgerald & Co [Member] \| ATM Offering [Member] \| May 7, 2018 [Member]
Available for future sales			$ 28,600
Alabama Graphite Corp. [Member]
Acquisition related costs to business				800
Operating and transaction costs				600
Laramide Resources Ltd [Member]
Decrease in fair value of securities				$ 800
Aspire Capital Fund LLC [Member] \| Common Stock Purchase Agreement [Member]
Net proceeds from direct offering		$ 22,000
Number of common stock shares issued to commitment fee		880,000
Stock purchase agreement description		(i) stockholder approval is obtained, or (ii) the average price paid for all shares issued under the CSPA (including the 880,000 commitment shares) is equal to or greater than $1.38. In addition, the Company cannot sell shares under the CSPA when the closing sales price for its common stock on the Nasdaq Capital Market is less than $0.25 per share. As of May 10, 2018, the Company has dollar capacity of $18.7 million of common stock available for future sales, limited by the Exchange Cap to the issuance of no more than an additional 2.7 million shares of common stock unless conditions (i) or (ii) above are met.
Aspire Capital Fund LLC [Member] \| Common Stock Purchase Agreement [Member] \| May 7, 2018 [Member]
Number of common stock shares limited to current exchange cap				2,700
Aspire Capital Fund LLC [Member] \| Common Stock Purchase Agreement [Member] \| Maximum [Member]
Available for future sales		$ 22,000
Sale of common stock shares		5,033,677
Aspire Capital Fund LLC [Member] \| Common Stock Purchase Agreement [Member] \| Minimum [Member]
Number of common stock shares issued to commitment fee	880,000
Average price per shares issued	$ 1.38	$ 1.38
Aspire Capital Fund LLC [Member] \| May 7, 2018 [Member] \| Common Stock Purchase Agreement [Member]
Available for future sales				$ 18,700