XML 23 R12.htm IDEA: XBRL DOCUMENT
v3.21.2

Oil and Natural Gas Properties | 9 Months Ended
--- | ---
Jun. 30, 2021
Extractive Industries [Abstract] |
Oil and Natural Gas Properties | Oil and Natural Gas Properties Oil and natural gas properties are summarized below:
|  | June 30, 2021 |  | September 30, 2020
|  | (In thousands)
Proved |  | $ | 373,367 |  |  | $ | 326,420 |
Unproved |  | 22,294 |  |  | 32,084 |
Work-in-progress |  | 15,008 |  |  | 15,398 |
|  | 410,669 |  |  | 373,902 |
Accumulated depletion and amortization |  | (81,787) |  |  | (63,176) |
Total oil and natural gas properties, net |  | $ | 328,882 |  |  | $ | 310,726 |
Depletion and amortization expense for proved oil and natural gas properties was $6.7 million and $4.8 million, respectively, for the three months ended June 30, 2021 and 2020. Depletion and amortization expense for proved oil and natural gas properties was $18.7 million and $15.5 million, respectively, for the nine months ended June 30, 2021 and 2020. The following table summarizes the components of exploration expenses:
|  | Three Months Ended June 30, |  | Nine Months Ended June 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
|  | (In thousands)
Expiration of oil and natural gas leases |  | $ | 2,785 |  |  | $ | 6,757 |  |  | $ | 8,615 |  |  | $ | 7,288 |
Geological and geophysical costs |  | — |  |  | — |  |  | 67 |  |  | 1,943 |
Total exploration costs |  | $ | 2,785 |  |  | $ | 6,757 |  |  | $ | 8,682 |  |  | $ | 9,231 |

X
- References No definition available. + Details
Name: | srt_ExtractiveIndustriesAbstract
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for properties used in normal conduct of oil and gas exploration and producing operations. This disclosure may include property accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -URI http://asc.fasb.org/subtopic&trid=2145654 + Details
Name: | us-gaap_OilAndGasPropertiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration