Annual report pursuant to Section 13 and 15(d)

Note D - Income Taxes (Details Textual)

v3.5.0.2
Note D - Income Taxes (Details Textual)
 3 Months Ended 12 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Sep. 15, 2015
USD ($)
Adjustments for New Accounting Principle, Early Adoption [Member] | March 31, 2016 [Member] | Accounting Standards Update 2016-09 [Member]          
Increase (Decrease) in Earnings Per Share, Basic and Diluted 0        
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense $ 54,313        
Effective Income Tax Rate Reconciliation, Percent (2.50%)        
Adjustments for New Accounting Principle, Early Adoption [Member] | December 31, 2015 [Member] | Accounting Standards Update 2016-09 [Member]          
Increase (Decrease) in Earnings Per Share, Basic and Diluted 0.01        
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense $ 104,134        
Effective Income Tax Rate Reconciliation, Percent (5.20%)        
Adjustments for New Accounting Principle, Early Adoption [Member] | June 30, 2016 [Member] | Accounting Standards Update 2016-09 [Member]          
Increase (Decrease) in Earnings Per Share, Basic and Diluted 0.01        
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense $ 79,640        
Effective Income Tax Rate Reconciliation, Percent (2.30%)        
Adjustments for New Accounting Principle, Early Adoption [Member] | Accounting Standards Update 2016-09 [Member]          
Increase (Decrease) in Earnings Per Share, Basic and Diluted   0.05      
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense $ 437,096 $ 675,183      
Effective Income Tax Rate Reconciliation, Percent 16.30% 26.40%      
Increase (Decrease) in Effective Income Tax Rate Reconciliation, Percent 13.70% 6.20%      
Increase (Decrease) in Earnings Per Share, Basic 0.03        
Increase (Decrease) in Earnings Per Share, Diluted 0.04        
Reclassification of Excess Tax Benefits Related to Stock-based Employee Awards from Financing Activities to Operating Activities [Member] | Three Months Ended December 31, 2015 [Member] | Accounting Standards Update 2016-09 [Member]          
Prior Period Reclassification Adjustment $ 348,000        
Reclassification of Excess Tax Benefits Related to Stock-based Employee Awards from Financing Activities to Operating Activities [Member] | Six Months Ended March 31, 2016 [Member] | Accounting Standards Update 2016-09 [Member]          
Prior Period Reclassification Adjustment 741,000        
Reclassification of Excess Tax Benefits Related to Stock-based Employee Awards from Financing Activities to Operating Activities [Member] | Nine Months Ended June 30, 2016 [Member] | Accounting Standards Update 2016-09 [Member]          
Prior Period Reclassification Adjustment 1,786,000        
Reclassification of Excess Tax Benefits Related to Stock-based Employee Awards from Financing Activities to Operating Activities [Member] | Accounting Standards Update 2016-09 [Member]          
Cumulative Effect on Retained Earnings, Net of Tax 1,864,980        
Domestic Tax Authority [Member]          
Operating Loss Carryforwards 0 $ 0      
State and Local Jurisdiction [Member] | Valuation Allowance, Operating Loss Carryforwards, Expired and Utilized [Member]          
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount (259,000)        
State and Local Jurisdiction [Member] | Valuation Allowance, Operating Loss Carryforwards, Higher Expected NOL Utilization [Member]          
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount (78,000)        
State and Local Jurisdiction [Member]          
Operating Loss Carryforwards 9,283,000 9,283,000      
Operating Loss Carryforwards, Valuation Allowance 322,000 322,000     $ 659,000
Unrecognized Tax Benefits 0 0 $ 0 $ 0  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense   $ 0 $ 0 $ 0  
Effective Income Tax Rate Reconciliation, Percent   26.00% 35.00% 37.00%  
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount (337,000)        
Income Taxes Receivable, Current $ 643,000 $ 643,000 $ 48,000