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Stockholders' Equity - Narrative (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended | 16 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 30, 2018 | Jan. 31, 2018 | Jun. 30, 2016 | Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018 | Jul. 31, 2018 | Feb. 28, 2019 | Feb. 26, 2019 | Aug. 31, 2018 | Apr. 30, 2017
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  |  |  | $ 813,561 | $ 1,185,452 |  |  |  |  |  |
Issuance of common stock |  |  |  | 813,561 | 1,185,452 |  |  |  |  |  |
Pelen LLC |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Membership interest subsequent to sale of shares |  | 25.00% |  |  |  |  |  |  |  |  |
Leviston |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock (in shares) |  |  |  |  |  | 877,233 |  |  |  |  |
Issuance of common stock |  |  |  |  |  | $ 200,000 |  |  |  |  |
Member of Pelen, LLC | Restricted Stock |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued (in shares) | 1,758,181 | 1,475,410 |  |  |  |  |  |  |  |  |
2019 Equity Agreement | Murray FO |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Authorized amount of stock available for sale |  |  |  |  |  |  |  | $ 5,000,000.0 |  |  |
Discount to the volume weighted average sales price of aggregate offering price |  |  |  |  |  |  |  | 10.00% |  |  |
Shelf Offering |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price, up to |  |  |  |  |  |  |  | $ 50,000,000 | $ 50,000,000 |  |
ATM Agreement |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  |  |  | $ 728,468 | $ 1,132,884 |  |  |  |  |  |
Issuance of common stock (in shares) |  |  |  | 5,452,000 | 4,679,904 |  |  |  |  |  |
ATM Agreement | Leviston |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price, up to |  |  |  |  |  |  |  |  |  | $ 2,250,000 |
Proceeds from the issuance of common stock |  |  |  | $ 1,700,000 |  |  | $ 5,300,000 |  |  |  |
ATM Agreement | Leviston Resources LLC |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price, up to |  |  |  |  |  |  |  |  |  |  | $ 7,250,000.00
ATM Agreement | International Assets Advisory LLC |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price, up to |  |  | $ 5,000,000.0 |  |  |  |  |  |  |  |
Commission percentage paid |  |  | 2.50% |  |  |  |  |  |  |  |

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