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Stock Options and Warrants (Details) (USD $)
0 Months Ended 12 Months Ended
Nov. 09, 2010
nonemployee_director
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of non-employee directors allowed options 6    
Shares granted (shares)   50,000 67,000
Exercise price (usd per share)   $ 1.59  
Total unrecognized compensation   $ 253,000  
Vesting period for unrecognized compensation cost to be recognized   1 year 3 months  
Non-Employee Directors [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (shares) 13,333    
Exercise price (usd per share) 2.79    
Vesting period 3 years    
Chief Executive Officer [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (shares) 160,000    
Exercise price (usd per share) 2.79    
Vesting period 3 years    
Board of Directors Chairman [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (shares) 466,667    
Exercise price (usd per share) 2.79    
Vesting period 3 years    
Senior Vice President, Chief Counsel, Chief Compliance Officer [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (shares) 26,667    
Exercise price (usd per share) 2.79    
Vesting period 3 years    
Second Amended And Restated 2005 Equity Incentive Plan [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares reserved for future issuance (shares)     3,500,000
Securities reserved for future issuance (shares)     1,163,000
Stock-based compensation expense   600,000 2,600,000
Total unrecognized compensation   $ 253,000  
Vesting period for unrecognized compensation cost to be recognized   2 years