CONDENSED STATEMENTS OF CHANGES IN SHAREHOLDERS' DEFICIT (Parenthetical) - shares	Jun. 30, 2022	Jun. 30, 2021
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Number of shares subject to forfeiture (in shares)	1,125,000	1,125,000
Class B Ordinary Shares [Member]
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Number of shares subject to forfeiture (in shares)		1,125,000

Number of ordinary shares subject to forfeiture in the event the over-allotment option is not exercised by the underwriters.

No definition available.

Name:	nfys_OrdinarySharesSharesSubjectToForfeiture
Namespace Prefix:	nfys_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant