Company Overview - Schedule of prior period adjustments - Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues - Note 14	$ 36,001		$ 7,636		$ 55,037	$ 18,760
Cost of sales	(33,501)		(31,863)		(62,903)	(55,731)
Other operating costs	(6,289)		(10,526)		(10,678)	(12,625)
Loss from operations	(3,789)		(34,753)		(18,544)	(49,596)
Interest expense - Note 9	(5,298)		(15,072)		(9,747)	(34,959)
Fair value adjustment to warrants - Notes 11 and 18	651		(922)		10,144	(922)
Interest income	9		35		32	147
Loss before income taxes	(8,427)		(50,712)		(18,115)	(85,330)
Net loss	$ (8,427)	$ (9,688)	(50,712)	$ (34,618)	$ (18,115)	(85,330)
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues - Note 14			7,636			18,760
Cost of sales			(31,863)			(55,731)
Other operating costs			(10,526)			(12,625)
Loss from operations			(34,753)			(49,596)
Interest expense - Note 9			(15,072)			(34,959)
Fair value adjustment to warrants - Notes 11 and 18			0			0
Interest income			35			147
Loss before income taxes			(49,790)			(84,408)
Net loss			(49,790)			(84,408)
Restatement Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues - Note 14			0			0
Cost of sales			0			0
Other operating costs			0			0
Loss from operations			0			0
Interest expense - Note 9			0			0
Fair value adjustment to warrants - Notes 11 and 18			(922)			(922)
Interest income			0			0
Loss before income taxes			(922)			(922)
Net loss			$ (922)			$ (922)