Financial Income and Expenses - Financial income (expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Income and Expenses [Abstract]
Financial income from cash equivalents	$ 61	$ 608	$ 443	$ 785
Interest and fees	(811)	(481)	(1,243)	(1,004)
Interest on debt	(638)	(443)	(1,018)	(873)
Fees	(173)	(38)	(225)	(131)
Foreign exchange gain (loss)	(235)	(1,089)	(496)	(2,687)
Other financial expense	(18)	(392)	(41)	(422)
Total financial income (expense)	$ (1,003)	$ (1,354)	$ (1,337)	$ (3,328)