Note 2 - Stock Incentive Plans and Other Share-based Compensation (Details Textual) - USD ($)
|
3 Months Ended |
6 Months Ended |
Apr. 30, 2016 |
Apr. 30, 2015 |
Apr. 30, 2016 |
Apr. 30, 2015 |
| Non-employee Directors [Member] |
|
|
|
|
| Allocated Share-based Compensation Expense |
|
|
$ 201,070
|
|
| Director [Member] |
|
|
|
|
| Allocated Share-based Compensation Expense |
$ 201,070
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
86,296
|
|
|
|
| Restricted Stock [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
|
|
86,296
|
|
| Allocated Share-based Compensation Expense |
$ 295,264
|
$ 387,200
|
$ 514,337
|
$ 637,694
|
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |
301,000
|
|
301,000
|
|
| Restricted Stock, Shares Issued Net of Shares for Tax Withholdings |
|
|
26,334
|
|
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition |
|
|
2 years 328 days
|
|
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized |
$ 2,500,000
|
|
$ 2,500,000
|
|