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 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options granted (in shares)     18,000 12,000    
Stock options granted (in dollars per share)     $ 2.79 $ 5.50    
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]            
Stock options outstanding (in shares) 390,800 [1] 534,900 [1] 390,800 [1] 534,900 [1] 528,800 607,967
Outstanding and fully vested stock options (in shares) 352,800 [1] 432,900 [2] 352,800 [1] 432,900 [2]    
Weighted average exercise price (in dollars per share) $ 9.66 [1] $ 9.85 [1] $ 9.66 [1] $ 9.85 [1] $ 9.82 $ 9.89
Compensation expense $ 26,000 $ 38,000 $ 79,000 $ 135,000    
Total unrecognized compensation cost related to unvested options 104,000   104,000      
Unrecognized compensation cost to be recognized in 2013 40,000   40,000      
Unrecognized compensation cost to be recognized in 2014 64,000   64,000      
Contractual Term With One-third Yearly Vesting [Member]
            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Contractual term     6 years      
Vesting period     3 years      
Employee Stock Option [Member]
            
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]            
Stock options outstanding (in shares) 227,600   227,600      
Outstanding and fully vested stock options (in shares) 207,600   207,600      
Weighted average exercise price (in dollars per share) $ 10.03   $ 10.03      
Remaining weighted contractual life     1 year 6 months      
Compensation expense 22,000 34,000 58,000 106,000    
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      
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 granted (in shares)     18,000      
Number of directors re-elected     5      
Number of new directors elected     1      
Stock options granted (in dollars per share)     $ 2.79      
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]            
Weighted-average fair value per share (in dollars per share)     $ 1.96 $ 3.55    
Risk -free interest rate (in hundredths)     2.92% 1.75%    
Expected volatility of stock (in hundredths)     58.88% 56.74%    
Dividend yield (in hundredths)     0.00% 0.00%    
Expected option life     10 years 10 years    
Stock options outstanding (in shares) 163,200   163,200      
Outstanding and fully vested stock options (in shares) 145,200   145,200      
Weighted average exercise price (in dollars per share) $ 10.22   $ 10.22      
Remaining weighted contractual life     4 years 9 months 18 days      
Compensation expense $ 4,000 $ 4,000 $ 21,000 $ 29,000    
[1] Options with exercise prices ranging from $5.50 to $14.75
[2] Options with exercise prices ranging from $7.05 to $14.75