Note 5 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	June 30, 2019						December 31, 2018
(in thousands)	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Financial Assets:
Cash and cash equivalents
Money market mutual fund	$	8,623	$	-	$	-	$	8,943	$	-	$	-
Total	$	8,623	$	-	$	-	$	8,943	$	-	$	-