Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2019	$ 183,765	$ 4	$ 381,952	$ (205,498)	$ 7,307
Balance (in shares) at Dec. 31, 2019		42,529,017
Share-based compensation	825		825
Foreign exchange translation	(4,428)				(4,428)
Net loss	(12,526)			(12,526)
Balance at Mar. 31, 2020	167,636	$ 4	382,777	(218,024)	2,879
Balance (in shares) at Mar. 31, 2020		42,529,017
Balance at Dec. 31, 2019	183,765	$ 4	381,952	(205,498)	7,307
Balance (in shares) at Dec. 31, 2019		42,529,017
Net loss	(40,151)
Balance at Sep. 30, 2020	146,713	$ 4	384,504	(245,649)	7,854
Balance (in shares) at Sep. 30, 2020		42,529,017
Balance at Mar. 31, 2020	167,636	$ 4	382,777	(218,024)	2,879
Balance (in shares) at Mar. 31, 2020		42,529,017
Share-based compensation	814		814
Foreign exchange translation	2,733				2,733
Net loss	(14,918)			(14,918)
Balance at Jun. 30, 2020	156,265	$ 4	383,591	(232,942)	5,612
Balance (in shares) at Jun. 30, 2020		42,529,017
Share-based compensation	913		913
Foreign exchange translation	2,242				2,242
Net loss	(12,707)			(12,707)
Balance at Sep. 30, 2020	146,713	$ 4	384,504	(245,649)	7,854
Balance (in shares) at Sep. 30, 2020		42,529,017
Balance at Dec. 31, 2020	142,221	$ 4	385,387	(255,424)	12,254
Balance (in shares) at Dec. 31, 2020		42,529,017
Share-based compensation	1,003		1,003
Exercise of stock options	34		34
Exercise of stock options (in Shares)		4,465
Stock issued in exchange for vested units (in Shares)		16,666
Warrants (See Note 2)	(3,810)		(3,810)
Foreign exchange translation	(2,462)				(2,462)
Net loss	(14,856)			(14,856)
Balance at Mar. 31, 2021	122,130	$ 4	382,614	(270,280)	9,792
Balance (in shares) at Mar. 31, 2021		42,550,148
Balance at Dec. 31, 2020	142,221	$ 4	385,387	(255,424)	12,254
Balance (in shares) at Dec. 31, 2020		42,529,017
Net loss	(53,252)
Balance at Sep. 30, 2021	84,712	$ 4	384,689	(308,676)	8,695
Balance (in shares) at Sep. 30, 2021		42,637,315
Balance at Mar. 31, 2021	122,130	$ 4	382,614	(270,280)	9,792
Balance (in shares) at Mar. 31, 2021		42,550,148
Share-based compensation	1,043		1,043
Exercise of stock options	4		4
Exercise of stock options (in Shares)		211
Stock issued in exchange for vested units (in Shares)		86,956
Foreign exchange translation	715				715
Net loss	(8,865)			(8,865)
Balance at Jun. 30, 2021	115,027	$ 4	383,661	(279,145)	10,507
Balance (in shares) at Jun. 30, 2021		42,637,315
Share-based compensation	1,028		1,028
Foreign exchange translation	(1,812)				(1,812)
Net loss	(29,531)			(29,531)
Balance at Sep. 30, 2021	$ 84,712	$ 4	$ 384,689	$ (308,676)	$ 8,695
Balance (in shares) at Sep. 30, 2021		42,637,315