Note 4 - Goodwill and Other Intangible Assets	3 Months Ended
Note 4 - Goodwill and Other Intangible Assets	Feb. 28, 2018
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	4 . Goodwill and Other Intangible Assets Accounting Standard Codification (“ASC”) 350 “Goodwill and Other Intangible Assets” requires that assets with indefinite lives no longer be amortized, but instead be subject to annual impairment tests. The Company follows this guidance. The Company tests goodwill that is not subject to amortization for impairment annually or more frequently if events or circumstances indicate that impairment is possible. The Company has elected to conduct its annual test during the first quarter. During the quarter ended February 28, 2018, management qualitatively assessed goodwill to determine whether testing was necessary. Factors that management considers in this assessment include macroeconomic conditions, industry and market considerations, overall financial performance (both current and projected), changes in management and strategy, and changes in the composition and carrying amounts of net assets. If this qualitative assessment indicates that it is more likely than not that the fair value of a reporting unit is less than its carrying value, a quantitative assessment is then performed. Based on a qualitative evaluation, management determined that the carrying value of goodwill was not impaired at February 28, 2018, and a quantitative assessment was not considered necessary.

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.