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Organization and Nature of Business (Details) | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2018 | Dec. 31, 2018 | Jan. 08, 2018 | Dec. 31, 2017
MWSPC |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Equity Method Investment, Ownership Percentage |  | 25.00% |  |
Percentage Of Total Production Expected To Market |  | 25.00% |  |
Miski Mayo Mine |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 35.00%
Miski Mayo Joint Venture [Member] |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  | 40.00% |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage |  |  | 75.00% |
Ma'aden Wa'ad Al Shamal Phosphate Company [Member] |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Equity Method Investment, Ownership Percentage | 25.00% |  |  |
Percentage Of Total Production Expected To Market | 25.00% | 25.00% |  |

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