Management's Plans as to Continuing as a Going Concern (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	9 Months Ended
	May 03, 2013	Sep. 30, 2013
Management's Plans as to Continuing as a Going Concern
Aggregate principal amount of convertible senior secured notes issued	$ 90.0	$ 90.0
Fixed interest rate (as a percent)	7.50%	7.50%