Nature of business (Details) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Nature of business
Net loss since inception	$ 90.0

Represents the amount of loss incurred since inception.

No definition available.

Name:	vygr_NetLossSinceInception
Namespace Prefix:	vygr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration