Note 14 - Equity Incentive Plan and Stock Based Compensation - Summary of Shares Issued (Details) - shares	3 Months Ended
Feb. 28, 2022	Feb. 28, 2021
Shares issued (in shares)	91,167	93,500
Unvested shares forfeit upon termination (in shares)	(8,333)	0
Director [Member] \| Vesting Immediately [Member]
Shares issued (in shares)	5,000	5,000
Employees, Directors, and Consultants [Member] \| Awards with Three-year Vesting [Member]
Shares issued (in shares)	94,500	88,500

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration