Note 12 - Related Party Transactions (Details Textual) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Oct. 16, 2020
Due to related parties, total	$ 110,000	$ 759,000
October 2020 Note [Member]
Debt instrument, face amount			$ 500,000

Carrying amount as of the balance sheet date of obligations due all related parties.

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+ Details