Condensed Statements of Cash Flows (Parenthetical) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Condensed Statements of Cash Flows
Transaction costs	$ 202,499

The amount of cost associated with issuance of shares, over-allotment.

No definition available.

Name:	ispc_TransactionCostsIssuanceOfSharesOverAllotment
Namespace Prefix:	ispc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration