Commitments (Details Narrative) - USD ($)		5 Months Ended
Aug. 02, 2019	Sep. 30, 2019
Number of units issued	25,300,000
IPO [Member]
Number of units issued	3,300,000
Underwriting Agreement [Member] \| IPO [Member]
Number of units issued		3,300,000
Underwriting discount issued		$ 0.2
Aggregate amount paid		$ 5,060,000
Defferd underwriting discount issued		$ 0.35
Deferred underwriting commissions		$ 8,900,000
Underwriting Agreement [Member] \| Over-Allotment Option [Member]
Exercise date		Aug. 02, 2019

Represent the deffered underwriting discount issued price per share.

No definition available.

Name:	nfin_DefferedUnderwritingDiscountIssuedPricePerShare
Namespace Prefix:	nfin_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Per share or per unit amount of underwriting discount issued.

+ References

No definition available.

+ Details

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Namespace Prefix:	nfin_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount refer to payments for deffered underwriting expense.

+ References

No definition available.

+ Details

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Namespace Prefix:	nfin_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Cash paid for expenses incurred during underwriting activities (the process to review insurance applications, evaluate risks, accept or reject applications, and determine the premiums to be charged) for insurance companies.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585

+ Details

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Balance Type:	credit
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

- Definition

Date the subsidiary or equity investee issued or sold stock, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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- Details

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