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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 298,406 | $ 271,042
Percentage of revenue recognized over time | 94.00% | 93.00%
United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 239,099 | $ 233,084
Canada |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 15,180 | 17,234
Europe |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 44,127 | 20,724
Project revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 204,284 | 183,230
O&M revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 25,335 | 22,258
Energy assets |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 43,154 | 40,772
Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 25,633 | 24,782
North America Regions |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 138,285 | 140,542
North America Regions | Project revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 116,211 | 119,231
North America Regions | O&M revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 6,933 | 5,539
North America Regions | Energy assets |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 13,754 | 14,407
North America Regions | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,387 | 1,365
U.S. Federal |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 60,890 | 59,556
U.S. Federal | Project revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 43,479 | 45,549
U.S. Federal | O&M revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 15,278 | 12,700
U.S. Federal | Energy assets |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,929 | 1,076
U.S. Federal | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 204 | 231
Europe |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 44,122 | 19,096
Europe | Project revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 41,424 | 17,200
Europe | O&M revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 747 | 333
Europe | Energy assets |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 171 | 519
Europe | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,780 | 1,044
Alternative Fuels |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 32,859 | 28,339
Alternative Fuels | Project revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 3,163 | 0
Alternative Fuels | O&M revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,377 | 3,686
Alternative Fuels | Energy assets |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 27,300 | 24,653
Alternative Fuels | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 19 | 0
All Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 22,250 | 23,509
All Other | Project revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 7 | 1,250
All Other | O&M revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 0
All Other | Energy assets |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0 | 117
All Other | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 22,243 | $ 22,142

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