REVENUE RECOGNITION (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

The following tables set forth revenues disaggregated by service line and timing of revenue recognition by operating segment for each of the three and nine months ended September 30, 2021 and 2020:

Three Months Ended September 30, 2021


	Eastern		Western		Resource Solutions		Total Revenues
Collection	$	48,951	$	69,921	$	—	$	118,872
Landfill	6,622		18,201		—		24,823
Transfer	16,948		10,375		—		27,323
Transportation	54		3,393		—		3,447
Landfill gas-to-energy	269		984		—		1,253
Processing	2,310		649		27,418		30,377
Non-processing	—		—		35,874		35,874
Total revenues	$	75,154	$	103,523	$	63,292	$	241,969

Transferred at a point-in-time	$	43	$	296	$	19,927	$	20,266
Transferred over time	75,111		103,227		43,365		221,703
Total revenues	$	75,154	$	103,523	$	63,292	$	241,969

Three Months Ended September 30, 2020


	Eastern		Western		Resource Solutions		Total Revenues
Collection	$	38,659	$	63,611	$	—	$	102,270
Landfill	5,694		17,880		—		23,574
Transfer	11,861		9,756		—		21,617
Transportation	61		2,348		—		2,409
Landfill gas-to-energy	210		777		—		987
Processing	1,838		356		15,701		17,895
Non-processing	—		—		33,915		33,915
Total revenues	$	58,323	$	94,728	$	49,616	$	202,667

Transferred at a point-in-time	$	52	$	347	$	7,736	$	8,135
Transferred over time	58,271		94,381		41,880		194,532
Total revenues	$	58,323	$	94,728	$	49,616	$	202,667

Nine Months Ended September 30, 2021



	Eastern		Western		Resource Solutions		Total Revenues
Collection	$	124,389	$	199,278	$	—	$	323,667
Landfill	18,143		48,336		—		66,479
Transfer	39,847		27,498		—		67,345
Transportation	148		8,646		—		8,794
Landfill gas-to-energy	784		2,873		—		3,657
Processing	5,246		1,508		65,721		72,475
Non-processing	—		—		104,958		104,958
Total revenues	$	188,557	$	288,139	$	170,679	$	647,375

Transferred at a point-in-time	$	125	$	1,284	$	44,964	$	46,373
Transferred over time	188,432		286,855		125,715		601,002
Total revenues	$	188,557	$	288,139	$	170,679	$	647,375

Nine Months Ended September 30, 2020



	Eastern		Western		Resource Solutions		Total Revenues
Collection	$	110,059	$	180,778	$	—	$	290,837
Landfill	13,807		49,409		—		63,216
Transfer	32,695		25,429		—		58,124
Transportation	159		8,472		—		8,631
Landfill gas-to-energy	793		2,138		—		2,931
Processing	4,290		992		45,724		51,006
Non-processing	—		—		99,599		99,599
Total revenues	$	161,803	$	267,218	$	145,323	$	574,344

Transferred at a point-in-time	$	177	$	949	$	20,428	$	21,554
Transferred over time	161,626		266,269		124,895		552,790
Total revenues	$	161,803	$	267,218	$	145,323	$	574,344