Related Party Transactions (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) representative	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Oct. 24, 2013 USD ($)
Related Party Transactions (Textual) [Abstract]
Number of representatives | representative	1
Percentage of outstanding preferred stock purchased	39.30%			39.30%
Pro rata share in revolving credit agreement				$ 471,600
Akin Gump Strauss Hauer Feld [Member]
Related Party Transactions (Textual) [Abstract]
Business acquisition, total cost	$ 1,500,000	$ 900,000	$ 400,000
VetSource [Member]
Related Party Transactions (Textual) [Abstract]
Business acquisition, total cost	$ 6,000,000	$ 5,700,000	$ 13,000,000
Agreement term	5 years
Agreement renewal term	1 year
Agreement termination notice (at least)	120 days
Amount available in revolving credit agreement				$ 1,200,000.0
Notes receivable, related parties	$ 0
Vetstreet [Member]
Related Party Transactions (Textual) [Abstract]
Percentage of cumulative ownership	19.90%
Payments to acquire business, in US dollars	$ 9,600,000