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Noncontrolling Interests - Narrative (Details)	Sep. 30, 2016
Noncontrolling Interest [Abstract]
Percentage of ownership interest in partnership	50.10%

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Percentage of ownership interest in partnership.

+ References

No definition available.

+ Details

Name:	woof_PercentageOfOwnershipInterestInPartnership
Namespace Prefix:	woof_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant