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Net Income (Loss) Per Share (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Net Income (Loss) Per Share (Textual) [Abstract]        
Dilutive restricted stock awards outstanding securities not participate in losses 0 0 0 0
Allocations made to weighted average unvested restricted shares outstanding 149,995 0 0 0