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Fair Value Measurements (FY) (Details) - USD ($)	3 Months Ended	8 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2021	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Aggregate value of public warrants	$ 759,000	$ 3,890,177	$ 450,656

X

- Definition

Aggregate value of Public warrants.

+ References

No definition available.

+ Details

Name:	nvac_AggregateValueOfPublicWarrants
Namespace Prefix:	nvac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

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