Note 6 - Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

	As of March 31, 2019
(in thousands)	Amortization period (years)			Gross carrying amount		Accumulated Amortization		Net carrying amount
Licenses	5	-	10	$	668	$	612	$	56
Total				$	668	$	612	$	56

	As of December 31, 2018
(in thousands)	Amortization period (years)			Gross carrying amount		Accumulated Amortization		Net carrying amount
Licenses	5	-	10	$	652	$	591	$	61
Total				$	652	$	591	$	61