CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 219,089	$ 71,152
Accounts receivable, net of allowance for credit losses of $3,703 and $3,016, respectively	140,332	100,886
Refundable income taxes	3,726	0
Prepaid expenses	20,448	15,182
Inventory	17,519	13,472
Other current assets	12,227	6,787
Total current assets	413,341	207,479
Property, plant and equipment, net of accumulated depreciation and amortization of $1,136,955 and $1,064,756, respectively	935,402	720,550
Operating lease right-of-use assets	103,116	92,063
Goodwill	737,150	274,458
Intangible assets, net	256,689	91,783
Restricted cash and assets	4,658	1,900
Cost method investments	10,967	10,967
Deferred income taxes	6,604	22,903
Other non-current assets	30,088	27,112
Total assets	2,498,015	1,449,215
CURRENT LIABILITIES:
Current maturities of debt	33,957	8,968
Current operating lease liabilities	8,626	7,000
Accounts payable	100,108	74,203
Accrued payroll and related expenses	20,753	23,556
Accrued interest	3,719	2,858
Contract liabilities	18,852	3,742
Current accrued final capping, closure and post-closure costs	13,155	11,036
Other accrued liabilities	54,014	46,237
Total current liabilities	253,184	177,600
Debt, less current portion	1,012,169	585,015
Operating lease liabilities, less current portion	68,584	57,345
Accrued final capping, closure and post-closure costs, less current portion	104,401	102,642
Deferred income taxes	516	437
Other long-term liabilities	28,294	28,276
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Additional paid-in capital	1,165,517	661,761
Accumulated deficit	(144,710)	(171,920)
Accumulated other comprehensive income, net of tax	9,480	7,542
Total stockholders' equity	1,030,867	497,900
Total liabilities and stockholders' equity	2,498,015	1,449,215
Class A Common Stock
STOCKHOLDERS' EQUITY:
Common stock	570	507
Class B Common Stock
STOCKHOLDERS' EQUITY:
Common stock	$ 10	$ 10