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Fair Value Measurements (Details Textual) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended	1 Months Ended	6 Months Ended	12 Months Ended
Fair Value Measurements (Details Textual) (USD $)	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Jun. 14, 2012 Level 3 [Member]	Jun. 30, 2012 Level 3 [Member]	Dec. 31, 2011 Level 3 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Fair value adjustment, net					$ (2,649,000)	$ (9,571,000)
Warrants liability revalued and recorded	$ 6,500,000	$ 2,600,000		$ 14,000,000
Fair Value Measurements (Textual) [Abstract]
Common share price, per share		$ 9.53	$ 9.96

Amount of increase (decrease) of liabilities measured at fair value on a recurring basis using unobservable inputs (level 3) which have taken place during the period. Such increase (decrease) may be comprised of changes in fair value (gains or losses) whether realized or unrealized that have been included in earnings, changed net asset value, or other comprehensive income (a separate component of shareholders' equity); purchases, sales, issues, or settlements of assets; and net transfers in to or out of this category within the fair value hierarchy.

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