Note 4 - Business Combination (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

	(in thousands)			Amortization period (years)
Finite-lived intangible assets:
Developed technology	$	1,640			9
Customer relationship		700			9
Deferred revenue		(50	)
Net asset acquired	$	2,290
Goodwill		370
Purchase consideration	$	2,660