Note 3 - Contracts With Customers 1 (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue, Remaining Performance Obligation, Amount	$ 1,252,000		$ 1,252,000
Solutions within the VOC Platform [Member]
Revenue from Contract with Customer, Percent of Total Revenue	63.80%	51.20%	61.30%	48.70%