Quarterly report pursuant to sections 13 or 15(d)

Stock Based Compensation (Details)

v2.4.0.8
Stock Based Compensation (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period     4 years      
Stock options outstanding (in shares) 1,954,000 [1] 2,614,500 [2] 1,954,000 [1] 2,614,500 [2] 2,644,000 3,039,833
Outstanding and fully vested stock options (in shares) 1,754,000 [1] 2,064,500 [2] 1,754,000 [1] 2,064,500 [2]    
Weighted average exercise price (in dollars per share) $ 2.00 [1] $ 1.99 [2] $ 2.00 [1] $ 1.99 [2] $ 1.96 $ 1.98
Compensation expense $ 3,000 $ 34,000 $ 54,000 $ 98,000    
Reduction from forfeiture of a non-qualified stock option     23,000      
Term period of option granted     10 years      
Number of shares authorized for purchase (in shares) 250,000   250,000      
Common stock per share (in dollars per share) $ 1.35   $ 1.35      
Percentage of yearly vesting on purchase shares (in hundredths)     25.00%      
Total unrecognized compensation cost related to unvested options 94,000   94,000      
Unrecognized compensation cost to be recognized in 2013 44,000   44,000      
Unrecognized compensation cost to be recognized in 2014 50,000   50,000      
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      
Employee Stock Option [Member]
            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options outstanding (in shares) 1,138,000   1,138,000      
Outstanding and fully vested stock options (in shares) 938,000   938,000      
Weighted average exercise price (in dollars per share) $ 2.05   $ 2.05      
Remaining weighted contractual life     1 year 6 months      
Compensation expense 3,000 34,000 36,000 72,000    
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      
Director Stock Options [Member]
            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Contractual term     10 years      
Vesting period     6 months      
Stock options outstanding (in shares) 816,000   816,000      
Outstanding and fully vested stock options (in shares) 816,000   816,000      
Weighted average exercise price (in dollars per share) $ 2.04   $ 2.04      
Remaining weighted contractual life     4 years 6 months      
Compensation expense $ 0 $ 0 $ 18,000 $ 26,000    
[1] Options with exercise prices ranging from $1.10 to $2.95
[2] Options with exercise prices ranging from $1.41 to $2.95