CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	At-the- Market Equity Offering [Member]	Common Stock [Member] Voting Common Stock [Member]	Common Stock [Member] Voting Common Stock [Member] At-the- Market Equity Offering [Member]	Common Stock [Member] Non-Voting Common Stock [Member]	Common Stock [Member] Voting and Non-Voting Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] At-the- Market Equity Offering [Member]	Accumulated other comprehensive (loss) income	Accumulated Deficit [Member]
BALANCE at Dec. 31, 2020	$ 320,828					$ 9	$ 649,540		$ (5,475)	$ (323,246)
BALANCE (In Shares) at Dec. 31, 2020			69,292		17,186
Net income (loss)	(45,263)									(45,263)
Stock-based compensation	5,360						5,360
Foreign currency translation adjustment	114								114
Unrecognized gain on derivatives	1,685								1,685
Net of issuance costs		$ 18,475						$ 18,475
Net of issuance costs, Shares				1,712
Common shares issued under equity incentive plan, Shares			681
Conversion of deferred shares into common shares, Shares			1,600
Conversion of public warrants into common shares, Shares			5
BALANCE at Jun. 30, 2021	301,199					9	673,375		(3,676)	(368,509)
BALANCE (In Shares) at Jun. 30, 2021			73,290		17,186
BALANCE at Mar. 31, 2021	298,870					9	671,646		(3,971)	(368,814)
BALANCE (In Shares) at Mar. 31, 2021			73,282		17,186
Net income (loss)	305									305
Stock-based compensation	1,729						1,729
Foreign currency translation adjustment	2								2
Unrecognized gain on derivatives	293								293
Common shares issued under equity incentive plan, Shares			8
BALANCE at Jun. 30, 2021	301,199					9	673,375		(3,676)	(368,509)
BALANCE (In Shares) at Jun. 30, 2021			73,290		17,186
BALANCE at Dec. 31, 2021	293,904					9	687,660		(1,997)	(391,768)
BALANCE (In Shares) at Dec. 31, 2021			78,423		13,422
Net income (loss)	49,578									49,578
Stock-based compensation	6,121						6,121
Foreign currency translation adjustment	(615)								(615)
Unrecognized gain on derivatives	4,738								4,738
Proceeds from 2021 exercise of public warrants	59						59
Common shares issued under equity incentive plan, Shares			286
BALANCE at Jun. 30, 2022	353,785					9	693,840		2,126	(342,190)
BALANCE (In Shares) at Jun. 30, 2022			78,709		13,422
BALANCE at Mar. 31, 2022	294,327					9	691,001		1,401	(398,084)
BALANCE (In Shares) at Mar. 31, 2022			78,709		13,422
Net income (loss)	55,894									55,894
Stock-based compensation	2,835						2,835
Foreign currency translation adjustment	(373)								(373)
Unrecognized gain on derivatives	1,098								1,098
Proceeds from 2021 exercise of public warrants	4						4
BALANCE at Jun. 30, 2022	$ 353,785					$ 9	$ 693,840		$ 2,126	$ (342,190)
BALANCE (In Shares) at Jun. 30, 2022			78,709		13,422