Fair Value Measurements Financial instruments with significant Level 3 inputs (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning liability balance	$ 23,200
Change in fair value recorded in earnings	0
Ending liability balance	23,200
contingent cosideration [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning liability balance	9,450,000
Change in fair value recorded in earnings	190,000
Ending liability balance	$ 9,640,000