Note 14 - Concentrations (Details Textual)	3 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Revenue from Contract with Customer, Including Assessed Tax	$ 983,979	$ 305,956
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers	3	1
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer One [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 341,920	$ 23,292
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer Two [Member]
Revenue from Contract with Customer, Including Assessed Tax	122,908
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer Three [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 114,914