Commitments and Contingencies (Details)	Apr. 11, 2016 USD ($)	Jul. 16, 2014 plaintiff	May 07, 2014 claim	Sep. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jul. 12, 2013 USD ($)
Loss Contingencies [Line Items]
Potential earn-out payment				$ 8,500,000
Earn-outs				$ 6,600,000	$ 3,500,000
Jorge Duran vs. VCA Animal Hospitals
Loss Contingencies [Line Items]
Claims dismissed | claim			4
Total claims | claim			8
Kimba Bradsbery and Cheri Brakensiek vs. Vicar Operating, Inc.
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff		2
Carlos Lopez versus Logistics Delivery Solutions, LLC
Loss Contingencies [Line Items]
Settlement agreement, maximum amount						$ 1,250,000
Accrued amount of settlement, percentage				50.00%
Final settlement amount	$ 900,000,000