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REVENUE RECOGNITION (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | $ 1,264,542 | $ 1,085,089 | $ 889,211
Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 374,463 | 340,058 | 264,569
Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 511,640 | 445,153 | 389,520
Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 85,640 | 0 | 0
Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 292,799 | 299,878 | 235,122
Collection |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 710,590 | 539,587 | 442,685
Collection | Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 266,991 | 233,043 | 175,816
Collection | Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 358,883 | 306,544 | 266,869
Collection | Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 84,716 | 0 | 0
Collection | Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Landfill |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 101,001 | 97,542 | 91,973
Landfill | Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 28,275 | 27,301 | 25,241
Landfill | Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 72,726 | 70,241 | 66,732
Landfill | Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Landfill | Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Transfer |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 122,955 | 110,562 | 91,282
Transfer | Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 65,401 | 65,800 | 53,882
Transfer | Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 56,630 | 44,762 | 37,400
Transfer | Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 924 | 0 | 0
Transfer | Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Transportation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 20,626 | 19,867 | 13,730
Transportation | Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 4,994 | 5,619 | 1,683
Transportation | Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 15,632 | 14,248 | 12,047
Transportation | Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Transportation | Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Landfill gas-to-energy |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 6,617 | 7,519 | 5,138
Landfill gas-to-energy | Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 806 | 925 | 1,052
Landfill gas-to-energy | Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 5,811 | 6,594 | 4,086
Landfill gas-to-energy | Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Landfill gas-to-energy | Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Processing |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 115,951 | 129,179 | 102,604
Processing | Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 7,996 | 7,370 | 6,895
Processing | Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 1,958 | 2,764 | 2,386
Processing | Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Processing | Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 105,997 | 119,045 | 93,323
National Accounts |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 186,802 | 180,833 | 141,799
National Accounts | Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
National Accounts | Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
National Accounts | Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
National Accounts | Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 186,802 | 180,833 | 141,799
Transferred at a point-in-time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 37,848 | 55,335 | 65,551
Transferred at a point-in-time | Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 463 | 462 | 166
Transferred at a point-in-time | Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 2,731 | 2,138 | 1,719
Transferred at a point-in-time | Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 0 | 0 | 0
Transferred at a point-in-time | Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 34,654 | 52,735 | 63,666
Transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 1,226,694 | 1,029,754 | 823,660
Transferred over time | Eastern |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 374,000 | 339,596 | 264,403
Transferred over time | Western |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 508,909 | 443,015 | 387,801
Transferred over time | Mid-Atlantic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | 85,640 | 0 | 0
Transferred over time | Resource Solutions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenues | $ 258,145 | $ 247,143 | $ 171,456

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