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- Definition

Disposal Group, Including Discontinued Operation, Option To Purchase Investment Tax Credits Generated By Disposed Assets, Amount

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Number Of Wind Farm Investments

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- Definition

Payments to Acquire Investment Tax Credit

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- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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- Definition

Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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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.

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Sale of Bright Canyon Energy (Details) $ in Thousands		5 Months Ended	12 Months Ended
Sale of Bright Canyon Energy (Details) $ in Thousands	Jan. 30, 2024 USD ($)	Jan. 12, 2024 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Aug. 04, 2023 USD ($) investment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of wind farm investments \| investment						2
Gain on sale relating to BCE			$ 0	$ 22,988	$ 6,423
Discontinued Operations, Disposed of by Sale \| Bright Canyon Energy Corporation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held-for-sale		$ 35,000
Consideration received		108,000				$ 44,000
Gain on sale relating to BCE		29,000		$ 23,000	$ 6,000
Investment tax credits	$ 23,000
Payments to acquire investment tax credits	$ 21,000
Discontinued Operations, Disposed of by Sale \| Bright Canyon Energy Corporation \| Ameresco, Inc.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held-for-sale		79,000
Liabilities transferred		$ 41,000
Bridge Loan \| Equity Bridge Loan Facility \| Bright Canyon Energy Corporation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Debt instrument, face amount						31,000
Term loans \| Non-Recourse Construction Term Loan Facility \| Bright Canyon Energy Corporation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Debt instrument, face amount						$ 36,000