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Net Loss Per Share - Additional Information (Detail)	Sep. 30, 2016
Series AB Preferred Stock [Member]
Earnings Per Share [Line Items]
Conversion ratio	0.23856

X

- Definition

Convertible Preferred Stock Conversion Ratio

+ References

No definition available.

+ Details

Name:	vlrx_ConvertiblePreferredStockConversionRatio
Namespace Prefix:	vlrx_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Earnings Per Share [Line Items]

+ References

No definition available.

+ Details

Name:	vlrx_EarningsPerShareLineItems
Namespace Prefix:	vlrx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=vlrx_SeriesAbPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: