The number of votes that each common share is entitled.

No definition available.

Name:	ivan_CommonStockNumberOfVotesPerShare
Namespace Prefix:	ivan_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from issuance of temporary equity.

+ References

No definition available.

+ Details

Name:	ivan_ProceedsFromIssuanceOfTemporaryEquity
Namespace Prefix:	ivan_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of fair value of warrants at issuance.

+ References

No definition available.

+ Details

Name:	ivan_TemporaryEquityFairValueOfWarrantsAtIssuance
Namespace Prefix:	ivan_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of issuance costs related to temporary equity.

+ References

No definition available.

+ Details

Name:	ivan_TemporaryEquityIssuanceCosts
Namespace Prefix:	ivan_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

+ Details

Name:	us-gaap_CommonStockSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Value of accretion of temporary equity to its redemption value during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_TemporaryEquityAccretionToRedemptionValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

+ References

No definition available.

+ Details

Name:	us-gaap_TemporaryEquityCarryingAmountAttributableToParent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(27)(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_TemporaryEquitySharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_StatementClassOfStockAxis=ivan_CommonClassaSubjectToRedemptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

CLASS A ORDINARY SHARES SUBJECT TO POSSIBLE REDEMPTION (Details)	6 Months Ended	9 Months Ended
	Jan. 11, 2021 USD ($) Vote $ / shares shares	Sep. 30, 2021 USD ($) Vote $ / shares shares	Sep. 20, 2021 Vote	Dec. 31, 2020 Vote $ / shares shares	Sep. 30, 2020 $ / shares shares	Jul. 31, 2020 $ / shares shares
Class A Common Stock Subject to Redemption
Temporary Equity [Line Items]
Temporary equity, shares outstanding \| shares	27,600,000	27,600,000		0
Gross proceeds from Initial Public Offering	$ 276,000,000	$ 276,000,000
Fair value of Public Warrants at issuance	(14,628,000)	(14,628,000)
Offering costs allocated to Class A ordinary shares subject to possible redemption	(14,971,596)	(14,971,596)
Accretion on Class A ordinary shares subject to possible redemption amount	29,599,596	29,599,596
Class A ordinary shares subject to possible redemption	$ 276,000,000	$ 276,000,000
Class A Ordinary shares
Temporary Equity [Line Items]
Common Stock, Shares Authorized \| shares	200,000,000	200,000,000		200,000,000	200,000,000	200,000,000
Common Stock, Par or Stated Value Per Share \| $ / shares	$ 0.0001	$ 0.0001		$ 0.0001	$ 0.0001	$ 0.0001
Common Stock, Number Of Votes Per Share \| Vote	1	1	1	1