Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

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

The following table sets forth the Company’s assets and liabilities that were measured at fair value as of June 30, 2018 and December 31, 2017 by level within the fair value hierarchy (in thousands):



	As of June 30, 2018 (unaudited)										As of December 31, 2017
	Level I		Level II			Level III		Fair Value			Level I		Level II		Level III		Fair Value
Financial assets:
Cash equivalents:
Money market funds	7,101		—			—		7,101			6,870		—		—		6,870
Short-term investments:
US Treasury securities	39,820		—			—		39,820			39,731		—		—		39,731
Term bank deposits	45,225		—			—		45,225			40,137		—		—		40,137
Other current assets:
Forward foreign exchange contracts	—		—			—		—			—		163		—		163
Financial liabilities:
Forward foreign exchange contracts	—		(2,913		)	—		(2,913		)	—		—		—		—
Total financial assets (liabilities)	$	92,146	$	(2,913	)	$	—	$	89,233		$	86,738	$	163	$	—	$	86,901