Derivative Contracts (Details 1) (Not Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Total	$ 3,305	$ (37,453)	$ 3,758	$ (48,351)
Common stock options/warrants
Derivative Instruments, Gain (Loss) [Line Items]
Total	651	(692)	388	3,152
Notes
Derivative Instruments, Gain (Loss) [Line Items]
Total	2,521	(36,603)	3,291	(51,478)
Forward Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total	$ 133	$ (158)	$ 79	$ (25)	$ 49