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UNAUDITED CONDENSED STATEMENT OF OPERATIONS (parenthetical)	Jul. 22, 2019 shares
Income Statement [Abstract]
Common stock, subject to forfeiture	656,250

X

- Definition

Common Stock Subject To Forfeiture.

+ References

No definition available.

+ Details

Name:	oacu_CommonStockSubjectToForfeiture
Namespace Prefix:	oacu_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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