Foreign currency risk and fair value of financial instruments (Tables)

9 Months Ended

Sep. 30, 2020

Financial Instruments [Abstract]

Schedule of Present Fair Values of Derivative Financial Instruments

The following tables present fair values of derivative financial instruments at December 31, 2019. There was no derivative financial instrument outstanding at September 30, 2020.

	At December 31, 2019
	Notional Amount		Fair value
	(in thousands)
Forward contracts (buy euros, sell U.S. dollars)	€	3,000	$	46
Total	€	3,000	$	46