Nature of Operations (Details)	3 Months Ended
Mar. 31, 2017 day_care_location province Laboratory segment Hospital State reportable_segment	May 01, 2016 Hospital State
Nature of Operations (Textuals) [Abstract]
Number of operating segments \| segment	4
Number of reportable segments \| reportable_segment	2
Number of hospitals operated \| Hospital	810
Number of states in which hospitals are operated	43
Number of Canadian Provinces \| province	5
Number of states in which the company operate a full-service veterinary diagnostic laboratory network	50
Number of laboratories operated \| Laboratory	61
Companion Animal Practices, North America
Nature of Operations (Textuals) [Abstract]
Number of hospitals operated \| Hospital		56
Number of states in which hospitals are operated		18
Percentage of ownership interest		80.00%
Camp Bow Wow
Nature of Operations (Textuals) [Abstract]
Number of dog boarding and day care service locations operated \| day_care_location	130
Number of states in which the entity operates	33
Number of Canadian Provinces in which entity operates \| province	1

Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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- Definition

The number of states the entity operates in as of the balance sheet date.

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Nature of operations.

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Number of hospitals operated.

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Number of laboratories operated.

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The number of states in which the Company operate a full-service veterinary diagnostic laboratory network.

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Number of states in which hospitals are operated.

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Number of Canadian Provinces

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Number of Canadian Provinces in which Entity Operates

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Number of Dog Boarding and Daycare Service Locations Operated

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