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Stockholders' Equity - Tax Benefit Provision Plan (Details)	Aug. 03, 2021
Equity [Abstract]
Share purchase right, convertible ratio	1
Share purchase right, term	3 years
Share purchase right, percentage of outstanding common shares acquired	4.95%

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- Definition

Preferred Share Purchase Right, Term

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No definition available.

+ Details

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X

- Definition

Share Purchase Right, Change of Control Percentage Per Individual

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No definition available.

+ Details

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X

- Definition

Share Purchase Right, Convertible Ratio

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No definition available.

+ Details

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Namespace Prefix:	oas_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

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