Note 1 - Significant Accounting Policies 1 (Details Textual) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018	Jan. 01, 2019
Operating Lease, Right-of-Use Asset	$ 1,754,000		$ 1,960,000
Revenue, Remaining Performance Obligation, Amount	2,744,000
Operating Lease, Liability, Total	$ 1,876,000		$ 1,960,000
Customer Concentration Risk [Member] | Accounts Receivable [Member] | US-based IT OEM Company [Member]
Concentration Risk, Percentage	65.00%	75.00%
All Other Services [Member]
Revenue, Remaining Performance Obligation, Amount	$ 110,000
Maximum [Member]
Accounts Receivable, Allowance for Credit Loss, Ending Balance	$ 8,000	$ 8,000