XML 55 R45.htm IDEA: XBRL DOCUMENT
v3.25.3

REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 525,987 | $ 500,873 | $ 1,351,100 | $ 1,237,261
Percentage of revenue recognized over time | 96.00% | 97.00% | 96.00% | 96.00%
United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 352,725 | $ 431,918 | $ 887,261 | $ 1,020,517
Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 29,023 | 16,337 | 80,991 | 46,933
Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 144,239 | 52,618 | 382,848 | 169,811
Project revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 409,952 | 385,377 | 1,019,501 | 920,424
O&M revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 30,770 | 28,425 | 83,571 | 79,930
Energy assets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 62,537 | 59,130 | 182,139 | 155,700
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 22,728 | 27,941 | 65,889 | 81,207
North America Regions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 237,600 | 291,611 | 627,045 | 638,027
North America Regions | Project revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 198,448 | 258,977 | 521,688 | 553,930
North America Regions | O&M revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 12,397 | 10,284 | 31,327 | 25,728
North America Regions | Energy assets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 23,647 | 20,444 | 65,286 | 53,944
North America Regions | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 3,108 | 1,906 | 8,744 | 4,425
U.S. Federal |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 89,508 | 89,113 | 174,399 | 236,740
U.S. Federal | Project revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 65,828 | 66,162 | 109,325 | 177,721
U.S. Federal | O&M revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 15,583 | 15,817 | 44,376 | 45,723
U.S. Federal | Energy assets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 7,763 | 7,096 | 19,900 | 12,749
U.S. Federal | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 334 | 38 | 798 | 547
Renewable Fuels |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 37,674 | 43,537 | 118,668 | 122,248
Renewable Fuels | Project revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 5,078 | 10,295 | 17,124 | 27,342
Renewable Fuels | O&M revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 1,959 | 1,844 | 5,736 | 6,357
Renewable Fuels | Energy assets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 30,633 | 31,393 | 95,801 | 88,421
Renewable Fuels | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 4 | 5 | 7 | 128
Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 144,234 | 52,613 | 382,775 | 169,794
Europe | Project revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 140,598 | 49,943 | 371,364 | 161,431
Europe | O&M revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 831 | 480 | 2,132 | 2,122
Europe | Energy assets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 494 | 197 | 1,152 | 557
Europe | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 2,311 | 1,993 | 8,127 | 5,684
All Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 16,971 | 23,999 | 48,213 | 70,452
All Other | Project revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 0 | 0 | 0 | 0
All Other | O&M revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 0 | 0 | 0 | 0
All Other | Energy assets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 0 | 0 | 0 | 29
All Other | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 16,971 | $ 23,999 | $ 48,213 | $ 70,423

X
- Definition Revenues, Percentage Of Revenue Recognized Over Time + References No definition available. + Details
Name: | amrc_RevenuesPercentageOfRevenueRecognizedOverTime
Namespace Prefix: | amrc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-4 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-14 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-42 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-7 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 8: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 9: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 924 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479941/924-10-S99-1 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-40 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-4 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_EuropeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=amrc_ProjectRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=amrc_OperationsAndMaintenanceRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=amrc_EnergyAssetsRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=amrc_OtherRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=amrc_NorthAmericaRegionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=amrc_USFederalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=amrc_RenewableFuelsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=amrc_EuropeSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |