Related party transactions, Agency Agreement with PT Pesona Sentra Utama (Details) - PT Pesona [Member] $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)
Related party transaction [Abstract]
Percentage of shares issued capital	51.00%	51.00%
Vessel management fees, charges	$ 61	$ 187

Amount charged to vessel management fees to the Company for the provision of technical and commercial management of the vessels for period after the Mergers.

No definition available.

Name:	nfe_VesselManagementFeesCharges
Namespace Prefix:	nfe_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration