Basis of Presentation (Details) $ in Millions		12 Months Ended
	Apr. 30, 2013	Dec. 31, 2015 USD ($)
Research and Development Assets Acquired Other than Through Business Combination [Line Items]
Stockholders equity reverse stock split ratio	25
Selling, General and Administrative Expenses
Research and Development Assets Acquired Other than Through Business Combination [Line Items]
Reclassification adjustment		$ 1.5