Earnings Per Share (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share (Textual) [Abstract]
Expense on the change in the fair value of the warrants	$ 25.8	$ 4.0

Antidilutive Securities Excluded from Computation of Earnings Per Share

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration