Quarterly report pursuant to sections 13 or 15(d)

Capital Stock and Stock Plans (Details)

v2.3.0.11
Capital Stock and Stock Plans (Details) (USD $)
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Percentage of fair market value of common stock to determine the number of shares to directors (in hundredths) 75.00%  
Shares [Abstract]    
Options outstanding (in shares) 2,789,833 2,755,525
Granted (in shares) 0 0
Exercised (in shares) 0 0
Forfeited/Expired (in shares) (425,333) (288,692)
Options outstanding End of Period (in shares) 2,364,500 [1] 2,466,833 [2]
Options Exercisable (in shares) 2,064,500 [1] 2,155,000 [2]
Options Vested and expected to be vested (in shares) 2,364,500 2,450,801
Weighted Average Exercise Price [Abstract]    
Options outstanding (in dollars per share) $ 2.03 $ 2.09
Granted (in dollars per share) $ 0 $ 0
Exercised (in dollars per share) $ 0 $ 0
Forfeited/Expired (in dollars per share) $ 1.90 $ 1.79
Options outstanding End of Period (in dollars per share) $ 2.06 [1] $ 2.12 [2]
Options Exercisable (in dollars per share) $ 2.13 [1] $ 2.12 [2]
Options Vested and expected to be vested (in dollars per share) $ 2.06 $ 2.12
Weighted Average Remaining Contractual Term [Abstract]    
Options outstanding End of Period (in years) 3 years 3 months 18 days [1] 3 years 2 months 12 days [2]
Options Exercisable (in years) 3 years [1] 3 years 1 month 6 days [2]
Options Vested and expected to be vested (in years) 3 years 3 months 18 days 3 years 2 months 12 days
Aggregate Intrinsic Value [Abstract]    
Exercised $ 0 $ 0
Options outstanding End of Period 0 [1] 0 [2]
Options Exercisable 0 [1] 0 [2]
Options Vested and expected to be vested 0 0
Options exercise price range, minimum (in dollars per share) $ 1.41 $ 1.42
Options exercise price range, maximum (in dollars per share) $ 2.95 $ 2.98
2003 Outside Directors Stock Plan [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares of our Common Stock issued (shares) 64,937  
Outside directors [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Noninterest Expense Directors Fees 6,500  
Audit Committee Chairman [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Additional quarterly fee due to additional responsibility 5,500  
Research and Development Committee Chairman [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Additional quarterly fee due to additional time commitment 1,000  
Board Member [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Board meeting attendance fee 1,000  
Telephonic conference call fee $ 500  
Maximum [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Director's fee in terms of common stock shares (in hundredths) 100.00%  
Minimum [Member]
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Director's fee in terms of common stock shares (in hundredths) 65.00%  
[1] Options with exercise prices ranging from $1.41 to $2.95
[2] Options with exercise prices ranging from $1.42 to $2.98