Summary of Significant Accounting Policies - Property and Equipment (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets	$ 0
Write off of fixed asset		0
Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets			1 year
Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets			5 years
January 2015 Restructuring Plan
Property, Plant and Equipment [Line Items]
Write off of fixed asset			2,600,000