XML 51 R31.htm IDEA: XBRL DOCUMENT
v3.20.4

Note 7 - Accrued Expenses (Tables) | 12 Months Ended
--- | ---
Nov. 30, 2020
Notes Tables |
Schedule of Accrued Liabilities [Table Text Block] |
|  | November 30, 2020 |  |  | November 30, 2019 |
Salaries, wages, and commissions |  | $ | 726,625 |  |  | $ | 555,201 |
Accrued warranty expense |  |  | 291,454 |  |  |  | 203,185 |
Other |  |  | 261,233 |  |  |  | 374,440 |
|  | $ | 1,279,312 |  |  | $ | 1,132,826 |

X
- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration