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Mandatorily Redeemable Preferred Stock ("Series B Preferred Stock") (Details) (USD $)
12 Months Ended 0 Months Ended
Dec. 31, 2010
Sep. 28, 2010
Series B Preferred Stock
Mandatorily Redeemable Preferred Stock (Series B Preferred Stock)    
Redemption price   $ 26,600,000
Premium call factor   1.035
Loss from extinguishment of mandatorily redeemable preferred stock $ 1,608,000 $ 1,600,000