Note 14 - Discontinued Operations - Results of Discontinued Operations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Service revenue		$ 18,446,000		$ 46,265,000
Cost of service revenue		9,889,000		30,359,000
Gross profit		8,557,000		15,906,000
Research and development		2,077,000		4,989,000
Sales and marketing		2,093,000		6,582,000
General and administrative		1,613,000		4,439,000
Income (loss) from discontinued operations before income taxes	$ (469,000)	2,774,000	$ (469,000)	(104,000)
Income tax expense
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	$ (469,000)	$ 2,774,000	$ (469,000)	$ (104,000)