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Stock Options and Warrants - Rights and Warrants (Details) (USD $)
0 Months Ended
Mar. 28, 2011
May 11, 2010
Former Chief Executive Officer [Member]
May 11, 2010
Former Chief Executive Officer [Member]
May 10, 2015 [Member]
May 11, 2010
Former Chief Executive Officer [Member]
May 10, 2015 [Member]
May 11, 2010
Former Chief Executive Officer [Member]
May 10, 2020 [Member]
May 11, 2010
Former Chief Executive Officer [Member]
Clause One and Two [Member]
Dec. 31, 2011
Options Matching Right [Member]
Nov. 12, 2009
Options Matching Right [Member]
Dec. 31, 2012
Options Matching Right [Member]
Director [Member]
Nov. 12, 2009
Options Matching Right [Member]
Director [Member]
Class of Warrant or Right [Line Items]                    
Litigation settlement   $ 1,500,000                
Number of shares that may be purchased by warrants (shares)   1,100,000 83,333 333,333 666,667 416,666        
Exercise price of right (usd per right) 2.65 6.00           3.42    
Litigation expense   5,600,000                
Assigned rights (usd per share)                   83,333
Aggregate fair value of rights             $ 46,000 $ 673,000    
Rights outstanding (shares)             1,300,000   83,333