XML 34 R19.htm IDEA: XBRL DOCUMENT
v3.22.1

Summary of Significant Accounting Policies (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
SPRING VALLEY ACQUISITION CORP |  |
Schedule of reconciliation of net loss per ordinary share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended March 31, | ​ | For the Three Months Ended March 31,
​ | ​ | 2022 | ​ | 2021
​ |  | Class A |  | Class B |  | Class A |  | Class B
Basic and diluted net income (loss) per ordinary share: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Numerator: |  | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ | ​
Allocation of net income (loss) | ​ | $ | (12,767,113) | ​ | $ | (3,191,778) | ​ | $ | 6,987,735 | ​ | $ | 1,746,934
Denominator: | ​ |  |  | ​ | ​ | ​ | ​ |  |  | ​ | ​ | ​
Basic and diluted weighted average ordinary shares outstanding | ​ |  | 23,000,000 | ​ |  | 5,750,000 | ​ |  | 23,000,000 | ​ |  | 5,750,000
Basic and diluted net income (loss) per ordinary share | ​ | $ | (0.56) | ​ | $ | (0.56) | ​ | $ | 0.30 | ​ | $ | 0.30
| ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Period From August 20, 2020
​ | ​ | Year Ended December 30, | ​ | (Inception) through
​ | ​ | 2021 | ​ | December 31, 2020
​ |  | Class A |  | Class B |  | Class A |  | Class B
Basic and diluted net loss per ordinary share: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Numerator: |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  |  | ​ |
Allocation of net income (loss) | ​ | $ | 2,562,198 | ​ | $ | 640,550 | ​ | $ | (6,978,778) | ​ | $ | (5,992,646)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  |  | ​ |  |
Basic and diluted weighted average ordinary shares outstanding | ​ | ​ | 23,000,000 | ​ | ​ | 5,750,000 | ​ |  | 6,052,632 | ​ |  | 5,197,368
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic and diluted net income (loss) per ordinary share | ​ | $ | 0.11 | ​ | $ | 0.11 | ​ | $ | (1.15) | ​ | $ | (1.15)

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=svsvu_SpringValleyAcquisitionCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |