Note 4 - Acquisition - Preliminary Purchase Price Allocated to the Intangibles Acquired (Details) - Eliza Holding Corp [Member] $ in Thousands	Apr. 17, 2017 USD ($)
Fair value of intangibles acquired	$ 76,240
Customer Relationships [Member]
Intangibles acquired, useful life (Year)	15 years
Fair value of intangibles acquired	$ 56,200
Intellectual Property [Member]
Intangibles acquired, useful life (Year)	6 years
Fair value of intangibles acquired	$ 19,600
Trade Names [Member]
Intangibles acquired, useful life (Year)	1 year 182 days
Fair value of intangibles acquired	$ 310
Restrictive Covenant [Member]
Intangibles acquired, useful life (Year)	1 year
Fair value of intangibles acquired	$ 130