XML 50 R38.htm IDEA: XBRL DOCUMENT v3.20.2

Summary of Significant Accounting Policies (Details)	Dec. 31, 2020
Minimum | Anticipated
Subsequent Event [Line Items]
Expected reduction in capital expenditures (percent)	58.00%

X

- Definition

Capital Expenditures, Increase (Decrease), Percent

+ References

No definition available.

+ Details

Name:	oas_CapitalExpendituresIncreaseDecreasePercent
Namespace Prefix:	oas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: