Note 6 - Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Description	March 3 1 , 201 9 (unaudited)		Level I (unaudited)		Level II (unaudited)		Level III (unaudited)
Assets:
Marketable securities:
Certificate of deposits	$	747	$	—	$	747	$	—
Government bonds		498		—		498		—
Corporate bonds		76,342		—		76,342		—
Foreign exchange contracts		56		—		56		—

Description	December 31, 201 8		Level I		Level II		Level III
Assets:
Marketable securities:
Certificate of deposits	$	747	$	—	$	747	$	—
Government bonds		496		—		496		—
Corporate bonds		76,226		—		76,226		—
Investment in other company (1)		936		—		—		936
Liabilities:
Foreign exchange contracts		77		—		77		—