Note 2 - Summary of Significant Account Policies (Details Textual)	6 Months Ended
May 31, 2019
Minimum [Member] \| Assets Leased to Others [Member]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member]
Lessor, Capital Lease, Term of Contract	3 years
Maximum [Member] \| Assets Leased to Others [Member]
Property, Plant and Equipment, Useful Life	5 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration