Business Acquisitions (Net Assets Acquired) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jan. 27, 2014
Business Acquisition [Line Items]
Goodwill	$ 68,503,000	$ 11,136,000
Qatarlyst
Business Acquisition [Line Items]
Cash		5,025,000
Contingent earn-out consideration arrangement		9,425,000
Total		14,450,000
Cash		285,000
Current assets		485,000
Property and equipment		144,000
Other assets		507,000
Intangible assets		5,396,000
Deferred tax liability		(947,000)
Current and other liabilities		(2,556,000)
Net assets acquired		3,314,000
Goodwill		11,136,000
Total net assets acquired		14,450,000
Curepet, Inc.
Business Acquisition [Line Items]
Non-Cash portion of Acquired Entity			1,350,000
Curepet, Healthcare Magic, Vertex, Oakstone, I3 [Member]
Business Acquisition [Line Items]
Cash	59,514,000
Contingent earn-out consideration arrangement	4,312,000
Previous cash consideration in investment of step up acquisition	2,000,000	0
Non-Cash portion of Acquired Entity	1,350,000	0
Total	67,176,000
Cash	323,000
Current assets	5,263,000
Property and equipment	670,000
Other assets	54,000
Intangible assets	6,872,000
Deferred tax liability	(1,040,000)
Current and other liabilities	(13,469,000)
Net assets acquired	(1,327,000)
Goodwill	68,503,000
Total net assets acquired	$ 67,176,000