Discontinued Operations - Schedule of Assets and Liabilities of Discontinued Operations (Details) - Discontinued Operations - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets from discontinued operations:
Total assets from discontinued operations	$ 1	$ 32
Liabilities from discontinued operations:
Total liabilities from discontinued operations	187	170
Drivetrain
Assets from discontinued operations:
Total assets from discontinued operations	1	32
Liabilities from discontinued operations:
Total liabilities from discontinued operations	187	170
XL Grid
Assets from discontinued operations:
Total assets from discontinued operations	0	0
Liabilities from discontinued operations:
Total liabilities from discontinued operations	$ 0	$ 0