Note 6 - Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)		3 Months Ended	12 Months Ended
		Mar. 31, 2020	Dec. 31, 2019
Gross Carrying Value		$ 23,060,000	$ 23,060,000
Accumulated Amortization		(1,766,000)	(1,078,000)
Net Carrying Value		$ 21,294,000	$ 21,982,000
Weighted Average [Member]
Weighted Average Useful Life (Year)		7 years 255 days	8 years 109 days
Customer Relationships [Member]
Gross Carrying Value		$ 800,000	$ 800,000
Accumulated Amortization		(88,000)	(51,000)
Net Carrying Value		$ 712,000	$ 749,000
Customer Relationships [Member] | Weighted Average [Member]
Weighted Average Useful Life (Year)		5 years	5 years 219 days
Trade Names [Member]
Gross Carrying Value		$ 2,590,000	$ 2,590,000
Accumulated Amortization		(205,000)	(123,000)
Net Carrying Value		$ 2,385,000	$ 2,467,000
Trade Names [Member] | Weighted Average [Member]
Weighted Average Useful Life (Year)		7 years 146 days	8 years 36 days
Technology-Based Intangible Assets [Member]
Gross Carrying Value		$ 19,020,000	$ 19,020,000
Accumulated Amortization		(1,473,000)	(904,000)
Net Carrying Value		$ 17,547,000	$ 18,116,000
Technology-Based Intangible Assets [Member] | Weighted Average [Member]
Weighted Average Useful Life (Year)		7 years 292 days	8 years 146 days
In Process Research and Development [Member]
Gross Carrying Value	[1]	$ 650,000	$ 650,000
Accumulated Amortization
Net Carrying Value	[1]	$ 650,000	$ 650,000
In Process Research and Development [Member] | Weighted Average [Member]
Weighted Average Useful Life (Year)	[1]	9 years	9 years

[1] In-process R&D represents the fair value of incomplete research and development that has not yet reached technological feasibility. We will amortize the asset upon technological feasibility, which has reach technological feasibility and been placed in service in the second quarter of 2020.