Note 5 - Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	March 31, 2020							December 31, 2019
	Gross Carrying Costs		Accumulated Amortization			Net Carrying Amount		Gross Carrying Costs		Accumulated Amortization			Net Carrying Amount
Patents & Trademarks	$	371,533	$	(198,686	)	$	172,847	$	339,023	$	(195,286	)	$	143,737
Developed Technology		2,882,000		(144,097	)		2,737,903		2,882,000		(108,075	)		2,773,925
Customer Relationships		445,000		(148,333	)		296,667		445,000		(111,250	)		333,750
Tradename		398,000		-			398,000		398,000		-			398,000
Total	$	4,096,533	$	(491,116	)	$	3,605,417	$	4,064,023	$	(414,611	)	$	3,649,412

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Year ending December 31,		Expense
	2020	$	231,151
	2021		308,201
	2022		196,951
	2023		159,868
	2024		159,868
	Thereafter		2,151,378
	Total	$	3,207,417