CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) (Parenthetical) - shares	3 Months Ended	6 Months Ended
Jun. 30, 2021	Sep. 30, 2021
Common Stock \| Class A common stock
Sale of private placement to Sponsor, net of offering costs	1,190,800	1,190,800

Number of stock issued during period shares private placement.

No definition available.

Name:	isaa_StockIssuedDuringPeriodSharesPrivatePlacement
Namespace Prefix:	isaa_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration