Stockholders' Equity/( Deficit) (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended			9 Months Ended
	May 06, 2016	Mar. 18, 2016	Mar. 31, 2016	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Debt Instrument [Line Items]
Debt conversion amount						$ 82,274	$ 40,989
Common stock issued for interest on Notes						2,445	0
Net proceeds from private placement						$ 89,845	$ 14,672
Common Shares
Debt Instrument [Line Items]
Debt conversion expense (in shares)		9,593,751
Shares sold in private placement (in shares)						29,948,334
Convertible Senior Notes Due 2019
Debt Instrument [Line Items]
Debt conversion amount		$ 79,800	$ 79,829	$ 18,776	$ 22,213
Percent of principal converted		50.00%
Number of shares issued on conversion of debt (in shares)		35,300,000
Number of shares issued on conversion price excluding share issued for accrued interest (in shares)		25,600,000
Conversion price (in dollars per share)		$ 3.11
Number of shares issued for accrued interest (in shares)		872,000
Five day average conversion price for accrued interest (in dollars per share)		$ 2.81
Common stock issued for interest on Notes		$ 2,400
Private Placement
Debt Instrument [Line Items]
Shares sold in private placement (in shares)	29,948,334
Shares issued (in dollars per share)	$ 3.00
Net proceeds from private placement	$ 89,800