Stockholders' Deficit (Details 2) - USD ($) $ in Thousands, shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2015
Stockholders' Deficit
Debt conversion amount			$ 40,989
Convertible Senior Notes Due 2019
Stockholders' Deficit
Debt conversion amount	$ 18,776	$ 22,213	$ 41,000
Number of shares issued on conversion of debt	6.0		13.2