Note 16 - Concentrations (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Revenue from Contract with Customer, Including Assessed Tax	$ 1,919,973	$ 1,271,028	$ 3,640,779	$ 2,395,270
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers	2	2
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer One [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 975,813	$ 680,192
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer Two [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 490,090	$ 184,376