Debt Obligations (7.5% Convertible Bonds) (Details)	12 Months Ended
	Dec. 31, 2014	Oct. 10, 2014	Dec. 31, 2013	Mar. 31, 2014
7.5% Fixed Rate [Member]
Debt Instrument [Line Items]
Interest rate	7.50%	7.50%	7.50%
Conversion rate	0.061
11.5% Convertible Bonds [Member]
Debt Instrument [Line Items]
Interest rate				11.50%
Debt maturity date	Mar. 31, 2014