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REVENUE RECOGNITION
 3 Months Ended
Mar. 31, 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 months ended March 31, 2024 and 2023:
Three Months Ended March 31, 2024
EasternWestern
Mid-Atlantic
Resource SolutionsTotal Revenues
Collection$70,260 $99,870 $41,230 $— $211,360 
Landfill6,612 12,938 — — 19,550 
Transfer station14,129 11,971 374 — 26,474 
Transportation1,276 2,839 — — 4,115 
Landfill gas-to-energy458 2,051 — — 2,509 
Processing1,269 660 — 29,762 31,691 
National Accounts— — — 45,309 45,309 
Total revenues$94,004 $130,329 $41,604 $75,071 $341,008 
Transferred at a point-in-time$122 $618 $— $12,552 $13,292 
Transferred over time93,882 129,711 41,604 62,519 327,716 
Total revenues$94,004 $130,329 $41,604 $75,071 $341,008 

Three Months Ended March 31, 2023
EasternWesternMid-Atlantic (1)Resource SolutionsTotal Revenues
Collection$61,108 $78,869 $— $— $139,977 
Landfill6,301 16,460 — — 22,761 
Transfer station13,981 9,961 — — 23,942 
Transportation1,183 3,580 — — 4,763 
Landfill gas-to-energy213 1,711 — — 1,924 
Processing1,123 453 — 22,806 24,382 
National Accounts— — — 44,846 44,846 
Total revenues$83,909 $111,034 $— $67,652 $262,595 
Transferred at a point-in-time$119 $731 $— $6,438 $7,288 
Transferred over time83,790 110,303 — 61,214 255,307 
Total revenues$83,909 $111,034 $— $67,652 $262,595 
(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 $7,115 in the three months ended March 31, 2024 and $6,629 in the three months ended March 31, 2023. 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 months ended March 31, 2024 or March 31, 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 $147,635 and $158,931 as of March 31, 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 $29,715 and $31,472 as of March 31, 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 three months ended March 31, 2024 and March 31, 2023, respectively, when the services were performed.