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REVENUE RECOGNITION
 6 Months Ended
Jun. 30, 2024
Revenue from Contract with Customer [Abstract]  
REVENUE RECOGNITION REVENUE RECOGNITION
Revenues associated with our solid waste operations are derived mainly from solid waste collection and disposal services, including landfill, transfer station and transportation services, landfill gas-to-energy services and processing services. Revenues associated with our resource renewal operations are derived from processing services and non-processing services, which we refer to as our National Accounts business.
The following tables set forth revenues disaggregated by service line and timing of revenue recognition by operating segment for each of the three and six months ended June 30, 2024 and 2023:
Three Months Ended June 30, 2024
EasternWestern
Mid-Atlantic
Resource SolutionsTotal Revenues
Collection$76,071 $105,936 $41,952 $— $223,959 
Landfill7,583 17,199 — — 24,782 
Transfer station18,634 16,250 460 — 35,344 
Transportation1,433 3,564 — — 4,997 
Landfill gas-to-energy539 1,444 — — 1,983 
Processing2,231 649 — 33,275 36,155 
National Accounts— — — 49,943 49,943 
Total revenues$106,491 $145,042 $42,412 $83,218 $377,163 
Transferred at a point-in-time$117 $677 $— $15,163 $15,957 
Transferred over time106,374 144,365 42,412 68,055 361,206 
Total revenues$106,491 $145,042 $42,412 $83,218 $377,163 

Three Months Ended June 30, 2023
EasternWesternMid-Atlantic (1)Resource SolutionsTotal Revenues
Collection$64,749 $85,099 $— $— $149,848 
Landfill7,220 18,921 — — 26,141 
Transfer station17,698 14,728 — — 32,426 
Transportation1,208 3,854 — — 5,062 
Landfill gas-to-energy173 1,148 — — 1,321 
Processing2,275 479 — 25,383 28,137 
National Accounts— — — 46,710 46,710 
Total revenues$93,323 $124,229 $— $72,093 $289,645 
Transferred at a point-in-time$99 $690 $— $8,135 $8,924 
Transferred over time93,224 123,539 — 63,958 280,721 
Total revenues$93,323 $124,229 $— $72,093 $289,645 

Six Months Ended June 30, 2024
EasternWesternMid-Atlantic (1)Resource SolutionsTotal Revenues
Collection$146,332 $205,805 $83,181 $— $435,318 
Landfill14,195 30,137 — — 44,332 
Transfer station
32,762 28,221 834 — 61,817 
Transportation2,709 6,404 — — 9,113 
Landfill gas-to-energy997 3,496 — — 4,493 
Processing3,500 1,308 — 63,038 67,846 
National Accounts
— — — 95,251 95,251 
Total revenues$200,495 $275,371 $84,015 $158,289 $718,170 
Transferred at a point-in-time$239 $1,294 $— $27,717 $29,250 
Transferred over time200,256 274,077 84,015 130,572 688,920 
Total revenues$200,495 $275,371 $84,015 $158,289 $718,170 
Six Months Ended June 30, 2023
EasternWesternMid-Atlantic (1)Resource SolutionsTotal Revenues
Collection$125,858 $163,967 $— $— $289,825 
Landfill13,521 35,380 — — 48,901 
Transfer station
31,680 24,691 — — 56,371 
Transportation2,390 7,434 — — 9,824 
Landfill gas-to-energy386 2,859 — — 3,245 
Processing3,398 931 — 48,189 52,518 
National Accounts
— — — 91,557 91,557 
Total revenues$177,233 $235,262 $— $139,746 $552,241 
Transferred at a point-in-time$218 $1,421 $— $14,572 $16,211 
Transferred over time177,015 233,841 — 125,174 536,030 
Total revenues$177,233 $235,262 $— $139,746 $552,241 
(1)Operations under the Mid-Atlantic region commenced July 1, 2023.
Payments to customers that are not in exchange for a distinct good or service are recorded as a reduction of revenues. Rebates to certain customers associated with payments for recycled or organic materials that are received and subsequently processed and sold to other third-parties amounted to $8,416 and $15,531 in the three and six months ended June 30, 2024, respectively, and $6,329 and $12,958 in the three and six months ended June 30, 2023, respectively. Rebates are generally recorded as a reduction of revenues upon the sale of such materials, or upon receipt of the recycled materials at our facilities. We did not record revenues in the three and six months ended June 30, 2024 or June 30, 2023 from performance obligations satisfied in previous periods.
Contract receivables, which are included in accounts receivable, net in our consolidated balance sheets are recorded when billed or when related revenue is earned, if earlier, and represent claims against third-parties that will be settled in cash. Accounts receivable, net includes receivables from contracts of $165,706 and $158,931 as of June 30, 2024 and December 31, 2023, respectively. Certain customers are billed in advance and, accordingly, recognition of the related revenues for which payment has been received is deferred as a contract liability until the services are provided and control transferred to the customer. We recognized contract liabilities of $30,662 and $31,472 as of June 30, 2024 and December 31, 2023, respectively. Due to the short term nature of advanced billings, substantially all of the deferred revenue recognized as a contract liability as of December 31, 2023 and December 31, 2022 was recognized as revenue during the six months ended June 30, 2024 and June 30, 2023, respectively, when the services were performed.