Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue
Net revenue	$ 260,182	$ 151,267	$ 470,468	$ 292,070
Sales of fuel cell systems
Revenue
Net revenue	72,181	33,411	101,033	70,940
Sale of hydrogen infrastructure
Revenue
Net revenue	58,647	32,414	107,515	59,502
Sale of electrolyzers
Revenue
Net revenue	6,966	3,675	46,998	7,734
Sales of engineered equipment
Revenue
Net revenue	8,819	28,556	16,572	50,524
Services performed on fuel cell systems and related infrastructure
Revenue
Net revenue	8,701	8,822	17,798	17,062
Power purchase agreements
Revenue
Net revenue	16,130	11,169	24,067	21,206
Fuel delivered to customers and related equipment
Revenue
Net revenue	17,878	14,472	28,020	27,900
Sales of cryogenic equipment and other
Revenue
Net revenue	69,673	18,177	126,262	36,380
Other
Revenue
Net revenue	$ 1,187	$ 571	$ 2,203	$ 822