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Alternative Fuel Excise Tax Credit (Details)	Jan. 01, 2022 $ / gal
Volumetric Excise Tax Credit Disclosure [Abstract]
Federal alternative fuels tax credit - CNG (in dollars per gasoline gallon equivalent)	0.50
Federal alternative fuels tax credit - LNG (in dollars per liquid gallon)	0.50

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- Definition

Represents the volumetric excise tax credit per gasoline gallon equivalent of compressed natural gas (CNG).

+ References

No definition available.

+ Details

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- Definition

Represents the volumetric excise tax credit per liquid gallon of liquefied natural gas (LNG).

+ References

No definition available.

+ Details

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Namespace Prefix:	clne_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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