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Goodwill and Intangible Assets - Goodwill Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Sep. 30, 2021	Dec. 31, 2021
Goodwill [Roll Forward]
Beginning balance	$ 16,161		$ 705
Measurement period adjustment			186
Impairment		$ (5,600)	(101,470)
Acquisitions	58,689		117,445
Effect of change in foreign currency exchange rates	904		(1)
Disposal of Grapevine			(704)
Ending balance	$ 75,754		16,161
WAVE
Goodwill [Roll Forward]
Impairment			(35,700)
US Hybrid
Goodwill [Roll Forward]
Impairment			(42,200)
Solectrac
Goodwill [Roll Forward]
Impairment			$ (17,700)
Timios Reporting Unit
Goodwill [Roll Forward]
Amount exceeding fair value		19,500
Timios Reporting Unit \| Trade name
Goodwill [Roll Forward]
Impairment		(700)
Timios Reporting Unit \| Lender relationships
Goodwill [Roll Forward]
Impairment		$ (13,200)