Note 7 - Cooperative Marketing Agreement (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Obligation by Third Party Per Agreement, Due Remainder of Fiscal Year			$ 7,380,000
Revenue from Contract with Customer, Including Assessed Tax	$ 13,299,558	$ 13,637,972
Marketing and Advertising Expense	298,507	301,432
Depreciation	735,261	745,949
Product and Service, Other [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 982,038	942,136
Cooperative Marketing Agreement (CMA)1 [Member]
Marketing Agreement, Marketing Payment Obligation, to be Paid, Year One			$ 1,620,000
Marketing and Advertising Expense		65,000
Depreciation		47,000
Cooperative Marketing Agreement (CMA)1 [Member] | Product and Service, Other [Member]
Revenue from Contract with Customer, Including Assessed Tax		$ 112,000