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Property, Plant and Equipment (Details Narrative) |  |  | 3 Months Ended | 12 Months Ended |  |
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Jun. 20, 2018 USD ($) | Mar. 24, 2018 shares | Dec. 31, 2018 USD ($) a $ / shares | Dec. 31, 2018 USD ($) a $ / shares | Dec. 31, 2017 USD ($) a | Mar. 24, 2017 a | Dec. 31, 2016 a
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Average long term price of asset | $ / shares |  |  | $ 56.304 | $ 56.304 |  |  |
Asset impairment charges |  |  |  | $ 23,712,000 | $ 11,436,000 |  |
Drop of Acreage [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Net area on mineral leases | a |  |  | 1,683 | 1,683 |  |  |
Coosa Graphite Project [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Area of land | a |  |  | 45,000 | 45,000 |  |  |
Lease description |  |  |  | The Coosa project is comprised of a lease and option of privately-owned mineral rights from a single land owner covering an overall area of approximately 45,000 acres (approximately 70.31 square miles). The various property parcels that comprise the lease are contiguous with each other, except for s few small and isolated parcels which are situated in the far south part of the project area. The lease has a series of five-year terms (commencing August 1, 2012) that are not to exceed 70 years in total. |  |  |
Lease term |  |  | 5 years | 5 years |  |  |
Annual rental payments |  |  |  | $ 10,000 |  |  |
Optioned lease lands |  |  |  | $ 16,180 |  |  |
Percentage of NSR royalty |  |  | 2.00% | 2.00% |  |  |
Terms and conditions on lease payment |  |  |  | Under the terms of the lease the Company is required to make annual payments of $10,000 for the original lease and $16,179.10 for the optioned lands (the option has been exercised) in order to maintain our property rights. The Company is obligated to pay the owner of the mineral estate a net smelter returns royalty of 2.00% for any production and sale of graphite and other minerals derived from the leased lands. There is a further obligation to pay a 0.50% net smelter return royalty, not to exceed $150,000, and make payments of $100,000 at the time of completion of a "bankable feasibility study" and an additional $150,000 upon completion of "full permitting" of the leased property. |  |  |
Railroad Valley Project [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Area of land | a |  |  |  |  | 9,270 |  |
Columbus Basin Project [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Area of land | a |  |  |  |  |  | 14,200 | 11,200
Percentage of NSR royalty |  | 1.00% |  |  |  |  |
Area of unpatented mining claims | a |  |  |  |  |  | 3,000 |
Acquired mineral property claims in exchange of common stock | shares |  | 200,000 |  |  |  |  |
Sal Rica Project [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Area of land | a |  |  |  |  |  |  | 9,900
Percentage of NSR royalty |  |  |  |  |  |  | 2.00%
Area of unpatented mining claims | a |  |  |  |  |  |  | 3,360
Kingsville Dome Project [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Lease description |  |  |  | The leases have expiration dates ranging from 2000 to 2007. |  |  |
Gross area on mineral leases | a |  |  | 2,434 | 2,434 |  |  |
Net area on mineral leases | a |  |  | 2,227 | 2,227 |  |  |
Kingsville Dome Project [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 6.25% |  |  |
Annual per acre royalty payable | $ / shares |  |  |  | $ 10 |  |  |
Kingsville Dome Project [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 9.375% |  |  |
Annual per acre royalty payable | $ / shares |  |  |  | $ 30 |  |  |
Rosita Project [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Gross area on mineral leases | a |  |  | 2,759 | 2,759 |  |  |
Net area on mineral leases | a |  |  | 2,759 | 2,759 |  |  |
Asset impairment charges |  |  |  | $ 2,545,000 |  |  |
Rosita South Property [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Gross area on mineral leases | a |  |  | 1,795 | 1,795 |  |  |
Net area on mineral leases | a |  |  | 1,479 | 1,479 |  |  |
Rosita [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 6.25% |  |  |
Annual per acre royalty payable | $ / shares |  |  |  | $ 10 |  |  |
Rosita [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 18.25% |  |  |
Annual per acre royalty payable | $ / shares |  |  |  | $ 30 |  |  |
Mineral sales price per pound | $ / shares |  |  | $ 80.00 | $ 80.00 |  |  |
Vasquez Project [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Gross area on mineral leases | a |  |  | 872 | 872 |  |  |
Net area on mineral leases | a |  |  | 872 | 872 |  |  |
Asset impairment charges |  |  |  | $ 221,000 |  |  |
Vasquez Project [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 6.25% |  |  |
Mineral sales price per pound | $ / shares |  |  | $ 25.00 | $ 25.00 |  |  |
Vasquez Project [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 10.25% |  |  |
Mineral sales price per pound | $ / shares |  |  | $ 40.00 | $ 40.00 |  |  |
Butler Ranch Exploration Project [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Net area on mineral leases | a |  |  | 425 | 425 |  |  |
Butler Ranch Exploration Project [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Lease term |  |  | 8 years | 8 years |  |  |
Annual per acre royalty payable | $ / shares |  |  |  | $ 10 |  |  |
Butler Ranch Exploration Project [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Lease term |  |  | 10 years | 10 years |  |  |
Percentage of royalties on lease of sales |  |  |  | 10.00% |  |  |
Annual per acre royalty payable | $ / shares |  |  |  | $ 25 |  |  |
Cebolleta Property [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Area of land | a |  |  | 6,717 | 6,717 |  |  |
Lease term |  |  | 10 years | 10 years |  |  |
Initial payments per lease agreement |  |  |  | $ 5,000,000 |  |  |
Amount used in the calculation of recoverable reserve payment per unit |  |  |  | 1.00 |  |  |
Annual advance royalties previously paid |  |  | $ 500,000 | $ 500,000 |  |  |
Royalty payable |  |  | 1,500,000 | 1,500,000 |  |  |
Reduction in advanced royalty payment |  |  |  | 350,000 |  |  |
Payment on commencement of production |  |  |  | $ 4,000,000 |  |  |
Fixed royalty percentage |  |  |  | 5.75% |  |  |
Cebolleta Property [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 4.50% |  |  |
Cebolleta Property [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 8.00% |  |  |
Feasibility study term |  |  |  | 6 years |  |  |
Annual advance royalties previously paid |  |  | $ 5,000,000 | $ 5,000,000 |  |  |
Amount of deduction to recoverable reserve payment |  |  |  | $ 6,500,000 |  |  |
Juan Tafoya Property [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Area of land | a |  |  | 115 | 115 |  |  |
Lease term |  |  | 10 years | 10 years |  |  |
Initial payments per lease agreement |  |  |  | $ 1,250,000 |  |  |
Reduction in advanced royalty payment |  |  |  | $ 174,000 |  |  |
Fixed royalty percentage |  |  |  | 4.00% |  |  |
Area of land in mineral fee interest acquired | a |  |  | 4,097 | 4,097 |  |  |
Annual base rent per acre | $ / shares |  |  |  | $ 75 |  |  |
Reduction of market value per pound | $ / shares |  |  |  | $ 25 |  |  |
Juan Tafoya Property [Member] | First Five Year [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Annual rental payments |  |  |  | $ 225,000 |  |  |
Juan Tafoya Property [Member] | Second Five Year [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Annual rental payments |  |  |  | $ 337,500 |  |  |
Juan Tafoya Property [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 4.65% |  |  |
Juan Tafoya Property [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Percentage of royalties on lease of sales |  |  |  | 6.50% |  |  |
Temrezli and Sefaatli Projects [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Asset impairment charges | $ 18,000,000 |  |  |  |  |  |
Other Property Impairments [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Asset impairment charges |  |  | $ 5,700,000 |  |  |  |
Cebolleta/Juan Tafoya Property [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Asset impairment charges |  |  |  |  | 11,296,000 |  |
Carrying value impairment |  |  |  | 7,800,000 | 7,800,000 |  |
Mineral Property [Member] |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Mineral property expenses |  |  |  | $ 3,500,000 | $ 4,600,000 |  |

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