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Private Placement (Details) - SPRING VALLEY ACQUISITION CORP - USD ($)			4 Months Ended
	Nov. 28, 2020	Nov. 27, 2020	Dec. 31, 2020	Mar. 31, 2022	Dec. 31, 2021
Subsidiary, Sale of Stock [Line Items]
Warrant, proceeds			$ 8,900,000
Shares per warrant		1
Exercise price of warrant		$ 11.50		$ 1.00
Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Exercise price of warrant					$ 11.50
Private Placement Warrants
Subsidiary, Sale of Stock [Line Items]
Securities called by warrant	8,900,000	8,900,000			8,900,000
Warrant, proceeds	$ 8,900,000	$ 8,900,000
Shares per warrant				1	1
Exercise price of warrant		$ 1.00			$ 1.00

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

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- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

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+ References

No definition available.

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