XML 91 R81.htm IDEA: XBRL DOCUMENT v3.26.1

Stock-Based Compensation - Amazon Warrant Activities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Jun. 14, 2021	Apr. 16, 2021
Subsidiary, Sale of Stock [Line Items]
Contra revenue charge	$ 10,107,000	$ 17,338,000
Fuel Sales
Subsidiary, Sale of Stock [Line Items]
Contra revenue charge	7,500,000
Volume-related, O&M services
Subsidiary, Sale of Stock [Line Items]
Contra revenue charge	2,600,000
Amazon Warrant
Subsidiary, Sale of Stock [Line Items]
Aggregate number of warrant shares (in shares)			5,625,959	53,141,755
Purchase obligation for fuel				$ 500,000,000
Exercise price of the warrant (in dollars per share)			$ 13.49	$ 13.49
Outstanding and unvested Beginning Balance	$ 21,157,323
Granted	0
Vested	(1,175,408)
Outstanding and unvested as of Ending Balance	$ 19,981,915
Number of warrants vested	1,175,408
Contra revenue charge	$ 10,100,000	17,300,000
Amazon Warrant | Fuel Sales
Subsidiary, Sale of Stock [Line Items]
Contra revenue charge	7,500,000	7,500,000
Amazon Warrant | Volume-related, O&M services
Subsidiary, Sale of Stock [Line Items]
Contra revenue charge	$ 2,600,000	$ 2,600,000

X

- Definition

Amount, excluding tax collected from customer, of contra revenue from satisfaction of performance obligation by transferring promised good or service to customer.

+ References

No definition available.

+ Details

Name:	clne_ContraRevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	clne_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of purchase obligation for fuel including the cost associated with the usage of facility.

+ References

No definition available.

+ Details

Name:	clne_FuelPerformanceObligationIncludingFacilityUseFees
Namespace Prefix:	clne_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Number of warrants granted.

+ References

No definition available.

+ Details

Name:	clne_WarrantsAndRightsGranted
Namespace Prefix:	clne_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of warrants vested.

+ References

No definition available.

+ Details

Name:	clne_WarrantsVestedNumberOfShares
Namespace Prefix:	clne_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsidiarySaleOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_WarrantsAndRightsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	srt_ProductOrServiceAxis=clne_VolumeRelatedFuelSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=clne_VolumeRelatedOperationsAndMaintenanceServiceRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=clne_AmazonWarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: