|
Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable - Summary of Changes in the Allowance for Doubtful Accounts for Trade Accounts Receivable (Details) (USD $)
|
3 Months Ended | |
|---|---|---|
|
Jan. 31, 2015
|
Jan. 31, 2014
|
|
| Balance at beginning of period | $ 92,988 | $ 74,073 |
| Bad debt expense (recovery) | (26,411) | (7,255) |
| Losses charged to allowance | (6,820) | |
| Balance at end of period | $ 59,757 | $ 66,818 |