Minority Business Investment (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2012	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Jan. 27, 2014	Dec. 31, 2013
Schedule of Cost-method Investments [Line Items]
Document Period End Date				Jun. 30, 2015
Revenue	$ 64,712	$ 51,476		$ 128,465	$ 102,880
Derivative Liability	10,080			10,080		$ 5,367		$ 14,420
Curepet, Inc. [Member]
Schedule of Cost-method Investments [Line Items]
Cost Method Investment, Ownership Percentage			19.80%
Payments to Acquire Other Investments			$ 2,000
Purchase Price of Business Acquisition, Cost of Acquired Entity							$ 6,350
Derivative Liability	0			0			5,000
Curepet, Inc. [Member]
Schedule of Cost-method Investments [Line Items]
Revenue		$ 125		0
Purchase Price of Business Acquisition, Cost of Acquired Entity							6,350
Derivative Liability	$ 0			$ 0			$ 5,000