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REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | $ 289,645 | $ 283,666 | $ 552,241 | $ 517,693
Collection |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 149,848 | 137,261 | 289,825 | 256,793
Landfill |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 26,141 | 25,141 | 48,901 | 44,706
Transfer station |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 32,426 | 29,274 | 56,371 | 48,730
Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 5,062 | 5,789 | 9,824 | 9,920
Landfill gas-to-energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 1,321 | 1,753 | 3,245 | 4,407
Processing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 28,137 | 36,796 | 52,518 | 66,012
National Accounts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 46,710 | 47,652 | 91,557 | 87,125
Transferred at a point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 8,924 | 19,447 | 16,211 | 35,164
Transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 280,721 | 264,219 | 536,030 | 482,529
Eastern |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 93,323 | 87,263 | 177,233 | 158,582
Eastern | Collection |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 64,749 | 59,299 | 125,858 | 110,796
Eastern | Landfill |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 7,220 | 6,542 | 13,521 | 11,918
Eastern | Transfer station |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 17,698 | 17,292 | 31,680 | 28,905
Eastern | Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 1,208 | 1,765 | 2,390 | 3,238
Eastern | Landfill gas-to-energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 173 | 249 | 386 | 522
Eastern | Processing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 2,275 | 2,116 | 3,398 | 3,203
Eastern | National Accounts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Eastern | Transferred at a point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 99 | 117 | 218 | 236
Eastern | Transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 93,224 | 87,146 | 177,015 | 158,346
Western |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 124,229 | 114,884 | 235,262 | 210,723
Western | Collection |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 85,099 | 77,962 | 163,967 | 145,997
Western | Landfill |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 18,921 | 18,599 | 35,380 | 32,788
Western | Transfer station |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 14,728 | 11,982 | 24,691 | 19,825
Western | Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 3,854 | 4,024 | 7,434 | 6,682
Western | Landfill gas-to-energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 1,148 | 1,504 | 2,859 | 3,885
Western | Processing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 479 | 813 | 931 | 1,546
Western | National Accounts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Western | Transferred at a point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 690 | 517 | 1,421 | 1,028
Western | Transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 123,539 | 114,367 | 233,841 | 209,695
Mid-Atlantic |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Mid-Atlantic | Collection |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
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 | 0 | 0 | 0 | 0
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
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 | 0 | 0 | 0 | 0
Resource Solutions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 72,093 | 81,519 | 139,746 | 148,388
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 | 25,383 | 33,867 | 48,189 | 61,263
Resource Solutions | National Accounts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 46,710 | 47,652 | 91,557 | 87,125
Resource Solutions | Transferred at a point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 8,135 | 18,813 | 14,572 | 33,900
Resource Solutions | Transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | $ 63,958 | $ 62,706 | $ 125,174 | $ 114,488

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