Key management personnel (Details) - CAD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Key management personnel
Stock-based compensation	$ 3,594,682	$ 4,209,044
Salaries and bonuses	1,956,036	2,386,759
Consulting	320,067
Total	$ 5,870,785	$ 6,595,803

The amount of compensation to key management personnel in the form of consulting fees for the services rendered by them to the entity.

No definition available.

Name:	ngen_KeyManagementPersonnelCompensationConsultingFees
Namespace Prefix:	ngen_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration