Note 10 - Significant Risk Concentrations (Details Textual) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Accounts Receivable, after Allowance for Credit Loss, Current, Total	$ 5,514,000			$ 5,514,000		$ 9,216,000
Rebate Credits Outstanding	$ 122,000			122,000
Microsoft Azure [Member] | Cost of Sales [Member]
Rebates, Allocation Percentage	50.00%	20.00%	20.00%		20.00%
Microsoft Azure [Member] | Selling and Marketing Expense [Member]
Rebates, Allocation Percentage	50.00%	80.00%	80.00%		80.00%
Supplier Concentration Risk [Member] | Revenue Benchmark [Member] | Microsoft Corporation [Member] | Windows IoT Operating Systems [Member]
Concentration Risk, Percentage						79.00%
Kodak Alaris, Inc [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total	$ 645,000			$ 645,000
Kodak Alaris, Inc [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage				12.00%
Honeywell International, Inc [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total	$ 552			$ 552		$ 1,200,000
Honeywell International, Inc [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage				10.00%		13.00%