Discontinued Operations - Summary of net loss from discontinued operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) from discontinued operations:	$ (183)	$ (4,851)	$ (4,049)	$ (20,794)
Impairment of goodwill			0	(8,600)
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of goodwill	0	0	0	(8,606)
Discontinued Operations | XL Grid
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) from discontinued operations:	0	(1,453)	0	(2,894)
Discontinued Operations | Drivetrain
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) from discontinued operations:	$ (183)	$ (3,398)	$ (4,049)	$ (9,294)