Quarterly report pursuant to sections 13 or 15(d)

Stock Based Compensation (Details)

v2.4.0.6
Stock Based Compensation (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options outstanding (in shares) 2,674,500 [1] 2,841,833 [2] 2,674,500 [1] 2,841,833 [2] 3,039,833 2,755,525
Outstanding and fully vested stock options (in shares) 2,164,500 [3] 2,365,166 [4] 2,164,500 [3] 2,365,166 [4]    
Weighted average exercise price (in dollars per share) $ 1.97 [1] $ 2.04 [2] $ 1.97 [1] $ 2.04 [2] $ 1.98 $ 2.09
Options granted (in shares)     60,000 390,000    
Exercise price of options granted (in dollars per share)     $ 1.10 $ 1.53    
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]            
Allocated Share-based Compensation Expense $ 38,000 $ 70,000 $ 135,000 $ 262,000    
Total unrecognized compensation cost related to unvested options 341,000   341,000      
Unrecognized compensation cost to be recognized in 2012 55,000   55,000      
Unrecognized compensation cost to be recognized in 2013 152,000   152,000      
Unrecognized compensation cost to be recognized in 2014 96,000   96,000      
Unrecognized compensation cost to be recognized in 2015 38,000   38,000      
Employee Stock Option [Member]
            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Outstanding and fully vested stock options (in shares) 1,368,500   1,368,500      
Weighted average exercise price (in dollars per share) $ 2.09   $ 2.09      
Remaining weighted contractual life     1 year 9 months 11 days      
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]            
Weighted-average fair value per share       $ 0.89    
Risk -free interest rate       1.92% [5]    
Expected volatility of stock       60.02% [6]    
Dividend yield       0.00%    
Expected option life       6 years [7]    
Allocated Share-based Compensation Expense 34,000 53,000 106,000 205,000    
Employee Stock Option [Member] | Contractual term with one-fifth yearly vesting [Member]
            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Contractual term     10 years      
Proportional vesting number of shares (in hundredths)     20.00%      
Vesting period     5 years      
Employee Stock Option [Member] | Contractual term with one-third yearly vesting [Member]
            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Contractual term     6 years      
Proportional vesting number of shares (in hundredths)     33.33%      
Vesting period     3 years      
Director Stock Options [Member]
            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Contractual term     10 years      
Vesting period     6 months      
Outstanding and fully vested stock options (in shares) 796,000   796,000      
Weighted average exercise price (in dollars per share) $ 2.13   $ 2.13      
Remaining weighted contractual life     4 years 7 months 21 days      
Options granted (in shares)     60,000      
Exercise price of options granted (in dollars per share)     $ 1.1      
Number of re-elected directors 5   5      
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]            
Weighted-average fair value per share     $ 0.71 $ 0.94    
Risk -free interest rate     1.75% [5] 2.29% [5]    
Expected volatility of stock     56.74% [6] 57.48% [6]    
Dividend yield     0.00% 0.00%    
Expected option life     10 years [7] 10 years [7]    
Allocated Share-based Compensation Expense $ 4,000 $ 17,000 $ 29,000 $ 57,000    
1993 Non Qualified Stock Option Plan, 2004 and 2010 Stock Option Plans, and Non-Qualified Stock Option Agreement [Member]
            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options outstanding (in shares) 1,818,500   1,818,500      
[1] Options with exercise prices ranging from $1.10 to $2.95
[2] Options with exercise prices ranging from $1.41 to $2.98
[3] Options with exercise prices ranging from $1.41 to $2.95
[4] Options with exercise prices ranging from $1.42 to $2.98
[5] The risk-free interest rate is based on the U.S. Treasury yield in effect at the grant date over the expected term of the option.
[6] The expected volatility is based on historical volatility from our traded Common Stock over the expected term of the option.
[7] The expected option life is based on historical exercises and post-vesting data.