XML 91 R77.htm IDEA: XBRL DOCUMENT
v3.20.4

Revenue Recognition - Disaggregation of Revenues (Details) - USD ($) $ in Thousands | 1 Months Ended | 11 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2020 | Nov. 19, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 119,915 | $ 963,419 | $ 2,071,744 | $ 2,321,947
E&P |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 93,794 |  | 1,859,506 | 2,197,810
Midstream |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 43,257 | 376,815 | 488,427 | 286,642
Operating segments | E&P |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 93,794 | 775,888 | 1,859,506 | 2,197,810
Operating segments | E&P | Crude oil revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 69,075 | 522,812 | 1,261,413 | 1,425,409
Operating segments | E&P | Purchased crude oil sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 6,771 | 160,420 | 401,554 | 540,633
Operating segments | E&P | Natural gas and NGL revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 17,367 | 80,773 | 147,358 | 164,615
Operating segments | E&P | Purchased natural gas sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 366 | 5,047 | 7,207 | 6,078
Operating segments | E&P | Other services revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 215 | 6,836 | 41,974 | 61,075
Operating segments | Midstream |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 26,121 | 187,531 | 212,238 | 124,137
Operating segments | Midstream | Purchased crude oil sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 90 | 20,900 | 30 | 3,633
Operating segments | Midstream | Crude oil, natural gas and NGL revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 8,912 | 82,466 | 95,399 | 73,028
Operating segments | Midstream | Produced and flowback water revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 3,512 | 31,932 | 40,534 | 37,791
Operating segments | Midstream | Total midstream service revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 12,424 | 114,398 | 135,933 | 110,819
Operating segments | Midstream | Crude oil, natural gas and NGL revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 13,150 | 48,883 | 70,746 | 1,464
Operating segments | Midstream | Freshwater revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 457 | 3,350 | 5,529 | 8,221
Operating segments | Midstream | Total midstream product revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 13,697 | $ 73,133 | $ 76,305 | $ 13,318

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=oas_ExplorationAndProductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=oas_MidstreamServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_OilProductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_PurchasedOilSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_NaturalGasProductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_PurchasedGasSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_NaturalGasLiquidServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_CrudeOilandNaturalGasServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_ProducedandFlowbackWaterServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_TotalMidstreamServicesProductandServicesMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_NaturalGasandNGLServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_WaterServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=oas_TotalMidstreamProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |