Represents the number of common stock shares subject aggregate of sponsor surrendered.

No definition available.

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- Definition

"Number of shares of the company that are subject to forfeiture represented as a percentage of issued and outstanding stock as a result of partial exercise of over-allotment option. "

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
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- Definition

Number of shares of the company that were no longer subject to forfeiture.

+ References

No definition available.

+ Details

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- Definition

Number of shares transferred to others during the period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
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- Definition

The threshold period after the business combination in which the 20 trading days within any 30 trading day period commences for the transfer, assigning or sale of any shares of the company, after the completion of the initial business combination.

+ References

No definition available.

+ Details

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- Definition

The threshold period for not to transfer, assign or sell any of the shares or warrants, after the completion of the initial business combination.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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- Definition

Price of the entity's common stock which would be required to be attained to trigger the transfer, assign or sale of any shares or warrants of the company, after the completion of the initial business combination.

+ References

No definition available.

+ Details

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Namespace Prefix:	svsvu_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: 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

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Period Type:	instant

- Definition

Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

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

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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

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- Details

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Balance Type:
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- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_OverAllotmentOptionMember
Namespace Prefix:
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RELATED PARTY TRANSACTIONS - Founder Shares (Details) - USD ($)			1 Months Ended	3 Months Ended
	Oct. 22, 2020	Aug. 21, 2020	Sep. 30, 2020	Mar. 31, 2021	Feb. 24, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Common stock, shares subject to forfeiture, as a percent of issued and outstanding shares (as a percent)		20.00%		20.00%
Stock price trigger to transfer, assign or sell any shares or warrants of the company, after the completion of the initial business combination (in dollars per share)		$ 12.00		$ 12.00
Threshold period after the business combination in which the 20 trading days within any 30 trading day period commences		150 days		30 days
Threshold period for not to transfer, assign or sell any of their shares or warrants after the completion of the initial business combination				150 days
Each of the Company's directors
Related Party Transaction [Line Items]
Number of shares transferred			120,000
Sponsor \| Each of the Company's directors
Related Party Transaction [Line Items]
Number of shares transferred			40,000
Class B ordinary shares
Related Party Transaction [Line Items]
Common stock, shares outstanding				5,750,000		5,750,000
Related Party Transaction, Due from (to) Related Party					$ 25,000
Class B ordinary shares \| Over-allotment
Related Party Transaction [Line Items]
Shares subject to forfeiture		750,000
Shares no longer subject to forfeiture		750,000		750,000
Class B ordinary shares \| Over-allotment \| Maximum
Related Party Transaction [Line Items]
Shares subject to forfeiture				750,000
Class B ordinary shares \| Sponsor
Related Party Transaction [Line Items]
Consideration received	$ 0	$ 25,000
Shares issued		7,187,500
Number of shares surrender	1,437,500
Common stock, shares outstanding	5,750,000