Financing (Details 9) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Fair value adjustments: (Restated)
Compound embedded derivatives	$ 137	$ 1,943
Warrant derivatives	373	3,166
Hybrid instruments	(545)	24,487
Hybrid Instrument [Member]
Fair value adjustments: (Restated)
Hybrid instruments	217,400
Fair Value, Inputs, Level 3 [Member]
Statement [Line Items]
Beginning balance, December 31, 2013 (Restated):	39,166
Fair value adjustments: (Restated)
Compound embedded derivatives	(137)
Warrant derivatives	(373)
Hybrid instruments	545
Ending balance, March 31, 2014	39,201
Fair Value, Inputs, Level 3 [Member] | Embedded Derivative Financial Instruments [Member]
Statement [Line Items]
Beginning balance, December 31, 2013 (Restated):	296
Fair value adjustments: (Restated)
Compound embedded derivatives	(137)
Warrant derivatives	0
Hybrid instruments	0
Ending balance, March 31, 2014	159
Fair Value, Inputs, Level 3 [Member] | Warrant [Member]
Statement [Line Items]
Beginning balance, December 31, 2013 (Restated):	620
Fair value adjustments: (Restated)
Compound embedded derivatives	0
Warrant derivatives	(373)
Hybrid instruments	0
Ending balance, March 31, 2014	247
Fair Value, Inputs, Level 3 [Member] | Hybrid Instrument [Member]
Statement [Line Items]
Beginning balance, December 31, 2013 (Restated):	38,250
Fair value adjustments: (Restated)
Compound embedded derivatives	0
Warrant derivatives	0
Hybrid instruments	545
Ending balance, March 31, 2014	$ 38,795