Annual report pursuant to Section 13 and 15(d)

Note C - Shareholders' Equity (Detail)

v2.4.0.6
Note C - Shareholders' Equity (Detail) (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2011
Dec. 31, 2010
Sep. 30, 2012
Sep. 30, 2011
Feb. 28, 2010
Preferred Stock, Shares Authorized         500    
Common Stock, Shares Authorized         50,000,000 50,000,000  
Common Stock, Par or Stated Value Per Share (in Dollars per share)         $ 0.01 $ 0.01  
Temporary Equity, Shares Subscribed but Unissued             67,500
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         6 years    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 238,842       641,369    
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized (in Dollars)         $ 2,475,941    
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition         5 years 73 days    
Allocated Share-based Compensation Expense (in Dollars)         470,710 535,347  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period         (178,481) (233,329)  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value (in Dollars)         672,900 1,237,000  
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent         85.00%    
Stock Issued During Period, Shares, Employee Stock Purchase Plans 17,662 11,267 14,519 17,710      
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) $ 4.09 $ 6.24 $ 3.44 $ 2.13 $ 5.59 $ 6.26  
Payments Related to Tax Withholding for Share-based Compensation (in Dollars)         $ 38,386    
Cashless Method Stock Option Exercised [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period           33,835  
Common Stock Par Value [Member]
             
Common Stock, Par or Stated Value Per Share (in Dollars per share)         $ 1    
Contractual Term [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         6 years    
Directors [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         1 year    
Minimum [Member] | Restricted Stock Plan [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         3 years    
Minimum [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         3 years    
Maximum [Member] | Restricted Stock Plan [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         5 years    
Maximum [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         5 years