Note 12 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Amortization of Intangible Assets, Total	$ 28,000	$ 5,000	$ 57,000	$ 11,000
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	56,000		56,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	99,000		99,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	95,000		95,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	91,000		91,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	85,000		85,000
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	$ 22,000		22,000
Goodwill, Impairment Loss			$ 0