Quarterly report pursuant to Section 13 or 15(d)

Basic and Diluted Net Income (Loss) Per Common Share (Details)

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Basic and Diluted Net Income (Loss) Per Common Share (Details) (USD $)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Basic and Diluted Net Income (Loss) Per Common Share [Abstract]          
Net income (loss) $ (899,000) $ (15,311,000) $ 3,322,000 $ (31,682,000) $ (12,531,000)
Weighted average shares outstanding (in shares) 25,432,750 24,173,705 25,117,447 24,135,585  
Basic net income (loss) per common share (in dollars per share) $ (0.04) $ (0.63) $ 0.13 $ (1.31)  
Net income (loss) $ (899,000) $ (15,311,000) $ 3,322,000 $ (31,682,000)  
Weighted average shares outstanding (in shares) 25,432,750 24,173,705 25,117,447 24,135,585  
Effect of dilutive options and warrants (in shares) 0 0 239,189 0  
Weighted average shares outstanding assuming dilution (in shares) 25,432,750 24,173,705 25,356,636 24,135,585  
Diluted net income (loss) per common share (in dollars per share) $ (0.04) $ (0.63) $ 0.13 $ (1.31)  
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive securities not included in computation of diluted net income (loss) per common share (in shares) 116,220,961 38,667,278 115,670,961 38,667,278  
Warrants [Member]
          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive securities not included in computation of diluted net income (loss) per common share (in shares) 35,643,943 15,733,943 35,643,943 15,733,943  
Stock options [Member]
          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive securities not included in computation of diluted net income (loss) per common share (in shares) 2,509,784 2,668,784 1,959,784 2,668,784  
Preferred Stock - A [Member]
          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive securities not included in computation of diluted net income (loss) per common share (in shares) 58,067,234 20,264,551 58,267,234 20,264,551  
Preferred Stock - B [Member]
          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive securities not included in computation of diluted net income (loss) per common share (in shares) 20,000,000 0 20,000,000 0