Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Stock Based Compensation (Details Textual)

v3.3.1.900
Note 4 - Stock Based Compensation (Details Textual) - USD ($)
3 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Selling, General and Administrative Expenses [Member]    
Allocated Share-based Compensation Expense $ 204,881 $ 283,627
Cost of Sales [Member]    
Allocated Share-based Compensation Expense $ 21,886  
Minimum [Member] | Restricted Stock [Member] | Employees [Member] | Stock Compensation Plan 2007 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 1 year  
Maximum [Member] | Restricted Stock [Member] | Employees [Member] | Stock Compensation Plan 2007 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 10 years  
Restricted Stock [Member] | Employees [Member] | Stock Compensation Plan 2007 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 5 years 10 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 8,500 3,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 13.64 $ 13.33
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 8,500  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 13.64  
Employee Stock Purchase Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Market Price Percentage, Offering Date 85.00%  
Stock Issued During Period, Shares, Employee Stock Purchase Plans 10,352 10,097
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price $ 11.40 $ 10.46
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 155,088  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 0 0
Allocated Share-based Compensation Expense $ 226,767  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 4,131,512  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 8 years 292 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term 1 year 109 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value $ 2,358,173  
Proceeds from Stock Options Exercised $ 34,990 $ 1,276
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period 8,000 1,450