XML 83 R62.htm IDEA: XBRL DOCUMENT v3.21.2

COMMITMENTS AND CONTINGENCIES (Details) - USD ($)		3 Months Ended	4 Months Ended
	Nov. 27, 2020	Mar. 31, 2021	Dec. 31, 2020
Commitments and Contingencies
Registration arrangement consideration (per unit)		$ 0.35	$ 0.35
Registration arrangement consideration		$ 8,050,000
Costs reimbursed by underwriters		$ 750,000	$ 750,000
Public Offering
Commitments and Contingencies
Number of units issued	23,000,000
Share price per share	$ 10.00
Public Offering | Anchor investors
Commitments and Contingencies
Number of units issued		1,980,000
Share price per share		$ 494.56
Indirect beneficial interest, shares		142,187

X

- Definition

The amount of costs reimbursed by underwriters.

+ References

No definition available.

+ Details

Name:	svsvu_CostsReimbursedByUnderwriters
Namespace Prefix:	svsvu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the deferred fee per unit.

+ References

No definition available.

+ Details

Name:	svsvu_DeferredFeePerUnit
Namespace Prefix:	svsvu_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Obligation reflecting another's party to economic interests in another entity or trust under a contractual right.

+ References

No definition available.

+ Details

Name:	svsvu_IndirectBeneficialInterestShares
Namespace Prefix:	svsvu_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of new units issued during the period.

+ References

No definition available.

+ Details

Name:	svsvu_UnitsIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	svsvu_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

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

X

- Definition

Describes the maximum potential amount of consideration, undiscounted, that could be transferred under the registration payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=99383193&loc=d3e16207-108621

+ Details

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

X

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_TitleOfIndividualAxis=svsvu_AnchorInvestorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: