Long-Term Debt - Narrative (Details) T in Billions	1 Months Ended	3 Months Ended						9 Months Ended
	Apr. 30, 2021 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2023 USD ($) T	Sep. 30, 2022 USD ($)	Mar. 28, 2023 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2017 USD ($)
Debt Instrument [Line Items]
Number of tons | T								1.4
Assets		$ 2,659,515,000			$ 2,722,276,000			$ 2,659,515,000	$ 2,722,276,000		$ 2,704,377,000
Net Income		100,725,000	$ 167,723,000	$ 230,377,000	152,121,000	$ 126,291,000	$ (4,450,000)	498,825,000	273,962,000
Gain (loss) on extinguishment of debt		$ 662,000			674,000			2,725,000	4,361,000
Senior Secured Second Lien Notes due 2025
Debt Instrument [Line Items]
Repayments of debt								$ 101,832,000	26,387,000
PEDFA Solid Waste Disposal Revenue Bonds
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	900.00%	9.00%						9.00%			9.00%
Debt instrument, face amount	$ 75,000,000,000
Debt instrument, term	7 years
Proceeds from issuance of debt	$ 75,000,000
Restricted cash		$ 20,320,000						$ 20,320,000			$ 35,516,000
PEDFA Solid Waste Disposal Revenue Bonds Due April 2028 | Restricted Cash
Debt Instrument [Line Items]
Payment of capital construction project, qualified costs		8,442,000			2,376,000			16,313,000	7,100,000
Non-Guarantor Subsidiaries
Debt Instrument [Line Items]
Assets		148,200,000						148,200,000			158,877,000
Accounts receivable, after allowance for credit loss		147,664,000						147,664,000			$ 158,127,000
Net Income		$ 235,000			6,400,000			$ 4,843,000	10,492,000
Senior Notes | Senior Secured Second Lien Notes due 2025
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		11.00%						11.00%			11.00%	11.00%
Repayments of debt								$ 101,832,000	26,387,000
Debt instrument, repurchased face amount		$ 99,107,000			$ 25,000,000			99,107,000	$ 25,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term line of credit		0						0			$ 0
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			355,000,000							$ 260,000,000		$ 300,000,000
Line of credit facility, maximum borrowing capacity, option to increase, maximum increase amount			45,000,000
Line of credit facility, maximum borrowing capacity, option to increase, maximum amount			$ 400,000,000
Letters of credit outstanding, amount		139,195,000						139,195,000			103,029,000
Line of credit facility, remaining borrowing capacity		$ 215,805,000						$ 215,805,000			$ 296,971,000
Revolving Credit Facility and TLA Facility | Line of Credit
Debt Instrument [Line Items]
Debt instrument, covenant, net leverage ratio, maximum					2.50				2.50
Debt instrument, covenant, fixed charge coverage ratio, minimum					1.10				1.10
Debt instrument, covenant, first lien gross leverage ratio, actual		0.02						0.02
Debt instrument, covenant, net leverage ratio, actual		(0.05)						(0.05)
Debt instrument, covenant, fixed charge coverage ratio, actual		3.53						3.53
Revolving Credit Facility and TLA Facility | Line of Credit | Maximum
Debt Instrument [Line Items]
Debt instrument, covenant, first lien gross leverage ratio					1.50				1.50