Note 10 - Equity Investment (Details Textual) - M W L [Member] $ in Millions		10 Months Ended
Oct. 31, 2019 USD ($)	Oct. 31, 2019 USD ($)
Equity Method Investment, Ownership Percentage	45.00%	45.00%
Equity Method Investment, Amount Sold	$ 1.3
Equity Method Investment, Ownership Percentage by Non-related Party	55.00%	55.00%
Revenue from Related Parties		$ 2.2

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details