CONDENSED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - shares	Jul. 31, 2021	Dec. 31, 2020
Over-allotment option
Shares subject to forfeiture	862,500	862,500

Represents the maximum number of common stock shares subject to forfeiture.

No definition available.

Name:	osiun_CommonStockSharesSubjectToForfeiture
Namespace Prefix:	osiun_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant