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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY AND COMPREHENSIVE LOSS (Parenthetical)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY AND COMPREHENSIVE LOSS [Abstract]      
Issuance of preferred stock and related warrants (in shares) 0 0 135,000
Common stock issued in exchange for preferred stock and accrued and unpaid dividends 5,620,117 0 0
Common stock issued under common stock offerings and stock plans (in shares) 34,599,585 0 77,475
Common stock purchased (sold) by directors' deferred compensation plan (in shares) (193) 201 1,304