Derivative Contracts (Details 1) (Not Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Total	$ (10,515)	$ (23,549)
Common stock options/warrants [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total	596	1,260
Notes [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total	(11,112)	(24,788)
Forward contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total	$ 1	$ (21)	$ 49