Note 19 - Discontinued Operations - Results of Discontinued Operations (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Service revenue			$ 53,325,000
Cost of service revenue			34,662,000
Gross profit			18,663,000
Research and development			5,751,000
Sales and marketing			7,592,000
General and administrative			3,593,000
Income from discontinued operations before income taxes		$ (469,000)	1,727,000
Gain on disposition			145,982,000
Income tax expense			39,435,000
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	$ (469,000)	$ (469,000)	$ 108,274,000