Note 7 - Cooperative Marketing Agreement (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Obligation by Third Party Per Agreement, Due Remainder of Fiscal Year	$ 7,380,000
Revenue from Contract with Customer, Including Assessed Tax	13,637,972	$ 9,225,542
Marketing and Advertising Expense, Total	301,432	56,452
Depreciation, Total	745,949	689,585
Product and Service, Other [Member]
Revenue from Contract with Customer, Including Assessed Tax	942,136	832,933
Cooperative Marketing Agreement (CMA)1 [Member]
Marketing Agreement, Marketing Payment Obligation, to be Paid, Year One	1,620,000
Marketing and Advertising Expense, Total	65,000	23,000
Depreciation, Total	47,000	24,000
Cooperative Marketing Agreement (CMA)1 [Member] | Product and Service, Other [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 112,000	$ 47,000