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REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | $ 411,627 | $ 352,735 | $ 1,129,797 | $ 904,975
Transferred at a point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 17,355 | 9,321 | 46,605 | 25,532
Transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 394,272 | 343,414 | 1,083,192 | 879,443
Collection |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 252,579 | 206,093 | 687,896 | 495,917
Landfill |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 25,764 | 26,151 | 70,096 | 75,052
Transfer station |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 36,209 | 34,951 | 98,029 | 91,321
Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 5,480 | 5,235 | 14,591 | 15,060
Landfill gas-to-energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 1,651 | 1,797 | 6,144 | 5,042
Processing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 38,436 | 30,803 | 106,282 | 83,321
National Accounts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 51,508 | 47,705 | 146,759 | 139,262
Eastern |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 110,404 | 97,507 | 310,899 | 274,740
Eastern | Transferred at a point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 122 | 121 | 361 | 339
Eastern | Transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 110,282 | 97,386 | 310,538 | 274,401
Eastern | Collection |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 79,291 | 68,944 | 225,622 | 194,801
Eastern | Landfill |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 7,745 | 7,588 | 21,940 | 21,109
Eastern | Transfer station |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 18,862 | 16,963 | 51,626 | 48,643
Eastern | Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 1,363 | 1,328 | 4,071 | 3,718
Eastern | Landfill gas-to-energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 301 | 208 | 1,298 | 594
Eastern | Processing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 2,842 | 2,476 | 6,342 | 5,875
Eastern | National Accounts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Western |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 150,756 | 136,019 | 426,127 | 371,281
Western | Transferred at a point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 645 | 651 | 1,940 | 2,072
Western | Transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 150,111 | 135,368 | 424,187 | 369,209
Western | Collection |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 109,740 | 93,924 | 315,546 | 257,891
Western | Landfill |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 18,019 | 18,563 | 48,156 | 53,943
Western | Transfer station |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 16,890 | 17,491 | 45,111 | 42,181
Western | Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 4,117 | 3,907 | 10,520 | 11,342
Western | Landfill gas-to-energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 1,350 | 1,589 | 4,846 | 4,448
Western | Processing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 640 | 545 | 1,948 | 1,476
Western | National Accounts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Mid-Atlantic |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 64,005 | 43,722 | 148,020 | 43,722
Mid-Atlantic | Transferred at a point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Mid-Atlantic | Transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 64,005 | 43,722 | 148,020 | 43,722
Mid-Atlantic | Collection |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 63,548 | 43,225 | 146,728 | 43,225
Mid-Atlantic | Landfill |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Mid-Atlantic | Transfer station |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 457 | 497 | 1,292 | 497
Mid-Atlantic | Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Mid-Atlantic | Landfill gas-to-energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Mid-Atlantic | Processing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Mid-Atlantic | National Accounts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Resource Solutions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 86,462 | 75,487 | 244,751 | 215,232
Resource Solutions | Transferred at a point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 16,588 | 8,549 | 44,304 | 23,121
Resource Solutions | Transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 69,874 | 66,938 | 200,447 | 192,111
Resource Solutions | Collection |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Resource Solutions | Landfill |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Resource Solutions | Transfer station |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Resource Solutions | Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Resource Solutions | Landfill gas-to-energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Resource Solutions | Processing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 34,954 | 27,782 | 97,992 | 75,970
Resource Solutions | National Accounts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | $ 51,508 | $ 47,705 | $ 146,759 | $ 139,262

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