Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenue
Net revenue	$ 133,674	$ 120,264
Sales of fuel cell systems
Revenue
Net revenue	16,656	19,003
Sales of hydrogen infrastructure
Revenue
Net revenue	5,648	12,295
Sales of electrolyzers
Revenue
Net revenue	9,210	1,351
Sales of engineered equipment
Revenue
Net revenue	1,529	4,216
Services performed on fuel cell systems and related infrastructure
Revenue
Net revenue	16,874	13,023
Power purchase agreements
Revenue
Net revenue	23,210	18,304
Fuel delivered to customers and related equipment
Revenue
Net revenue	29,457	18,286
Sales of cryogenic equipment and liquefiers
Revenue
Net revenue	30,463	31,430
Other
Revenue
Net revenue	$ 627	$ 2,356