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 6 Months Ended 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Basic and Diluted Net Income (Loss) Per Common Share [Abstract]          
Net income (loss) $ (13,233,000) $ 867,000 $ (14,817,000) $ 4,221,000 $ 1,551,000
Weighted average shares outstanding (in shares) 26,191,311 25,111,713 26,034,995 24,957,183  
Basic net income (loss) per common share (in dollars per share) $ (0.51) $ 0.03 $ (0.57) $ 0.17  
Net income (loss) $ (13,233,000) $ 867,000 $ (14,817,000) $ 4,221,000  
Weighted average shares outstanding (in shares) 26,191,311 25,111,713 26,034,995 24,957,183  
Effect of dilutive options and warrants (in shares) 0 357,516 0 357,516  
Weighted average shares outstanding assuming dilution (in shares) 26,191,311 25,469,229 26,034,995 25,314,699  
Diluted net income (loss) per common share (in dollars per share) $ (0.51) $ 0.03 $ (0.57) $ 0.17  
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) 118,694,504 115,918,461 118,694,504 115,918,461  
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) 28,885,570 35,683,943 28,885,570 35,683,943  
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) 11,941,700 1,967,284 11,941,700 1,967,284  
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) 57,867,234 58,267,234 57,867,234 58,267,234  
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 20,000,000 20,000,000 20,000,000