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Revenue Recognition (Tables) | 3 Months Ended
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Mar. 31, 2021
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregated Revenue | The Company disaggregates revenues from its share of revenue from the sale of oil and natural gas and liquids by state. The Company’s revenues in its North Dakota, Texas and other states for the three months ended March 31, 2021 and 2020, are presented in the following table:
|  | Three months ended March 31, |
|  | 2021 |  |  | 2020 |
|  | (in thousands) |
Revenue: |  |  |  |  |  |  |  |
North Dakota |  |  |  |  |  |  |  |
Oil |  | $ | 522 |  |  | $ | 489 |
Natural gas and liquids |  |  | 79 |  |  |  | 49 |
Total |  |  | 601 |  |  |  | 538 |
Texas |  |  |  |  |  |  |  |
Oil |  |  | 618 |  |  |  | 366 |
Natural gas and liquids |  |  | 18 |  |  |  | 19 |
Total |  |  | 636 |  |  |  | 385 |
Other (1) |  |  |  |  |  |  |  |
Oil |  |  | (8 | ) |  |  | - |
Natural gas and liquids |  |  | (18 | ) |  |  | - |
Total |  |  | (26 | ) |  |  | - |
Combined Total |  | $ | 1,211 |  |  | $ | 923 |
| (1) | Adjustments of estimated accruals to actual revenues received from non-operated properties in other regions.
Schedule of Significant Concentrations of Credit Risk | The following table presents the joint interest operators that accounted for 10% or more of the Company’s total oil and natural gas revenue for at least one of the periods presented:
Operator |  | 2021 |  |  | 2020 |
Zavanna, LLC |  |  | 39 | % |  |  | 31 | %
CML Exploration, LLC |  |  | 10 | % |  |  | 52 | %

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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