Stock options (Details Narrative) (CAD)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Stock Options Details Narrative
Stock options Granted	601,066	542,500
Exercised price	1.37NSFDF_ExercisedPrice
weighted life cycle	5 years
Expiration period	2020

Gross number of share options (or share units) granted during the period.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration