Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity (Details)

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Shareholders' Equity (Details) (USD $)
1 Months Ended 6 Months Ended
May 31, 2012
Jun. 30, 2012
Assumptions used to estimate the fair value of stock options granted    
Expected dividend yield (as a percent)   0.00%
Preferred Stock    
Number of authorized shares of preferred stock   2,000,000
2011 Plan
   
Shareholders' Equity    
Maximum number of shares of common stock which can be issued   700,000
Stock options
   
Assumptions used to estimate the fair value of stock options granted    
Expected dividend yield (as a percent)   0.00%
Expected stock price volatility (as a percent) 95.50%  
Risk-free interest rate (as a percent) 1.87%  
Expected life of options (in years) 10 years  
Stock options | 2011 Plan
   
Shareholders' Equity    
Options outstanding (in shares)   45,000
Stock options | 2011 Plan | Employees
   
Shareholders' Equity    
Vesting period (in years)   2 years
Stock options | 2011 Plan | Non-employee directors
   
Shareholders' Equity    
Vesting period (in years)   6 months
Granted (in shares)   30,000
Exercise price (in dollars per share)   4.05
Weighted average grant date fair value (in dollars per share)   3.57
Stock options | 2006 Plan
   
Shareholders' Equity    
Options outstanding (in shares)   481,000
Stock options | 1997 Plan
   
Shareholders' Equity    
Options outstanding (in shares)   8,000