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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
CONSOLIDATED STATEMENTS OF CASH FLOWS [Abstract]      
Interest, capitalized interest and commitment fees $ 3,200,486 $ 13,725,858 $ 26,643,519