Note 11 - Long-term Debt (Details Textual)		1 Months Ended	3 Months Ended				6 Months Ended		12 Months Ended
	Mar. 29, 2021 USD ($)	Apr. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Apr. 01, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2020 USD ($)	Mar. 28, 2019 USD ($)	Nov. 30, 2017 USD ($)
Assets, Total			$ 2,720,486,000		$ 2,557,931,000		$ 2,720,486,000	$ 2,557,931,000	$ 2,573,517,000
Net Income (Loss) Attributable to Parent, Total			126,291,000	$ (4,450,000)	4,172,000	$ 26,404,000	121,841,000	30,576,000
Gain (Loss) on Extinguishment of Debt, Total			(1,565,000)		106,000		(3,687,000)	789,000
Non-Guarantor Subsidiaries [Member]
Assets, Total			137,684,000				137,684,000		104,548,000
Accounts Receivable, after Allowance for Credit Loss, Total			137,346,000				137,346,000		$ 104,099,000
Net Income (Loss) Attributable to Parent, Total			$ 3,407,000		3,284,000		4,092,000	2,125,000
Senior Secured Second Lien Notes due 2025 [Member]
Repayments of Debt							$ 26,387,000	14,153,000
PEDFA Solid Waste Disposal Revenue Bonds [Member]
Debt Instrument, Interest Rate, Stated Percentage		9.00%	9.00%				9.00%		9.00%
Debt Instrument, Face Amount		$ 75,000,000
Debt Instrument, Term (Year)		7 years
Proceeds from Issuance of Debt		$ 75,000,000
Restricted Cash, Total			$ 41,465,000				$ 41,465,000		$ 46,136,000
PEDFA Solid Waste Disposal Revenue Bonds Due April 2028 [Member] | Restricted Cash [Member]
Payment of Capital Construction Project, Qualified Costs			1,693,000				4,724,000
Revolving Credit Facility [Member]
Long-Term Line of Credit, Total			0				0		0
Loans Payable [Member] | The TLA Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity														$ 100,000,000
Loans Payable [Member] | Senior Secured Second Lien Notes due 2025 [Member]
Debt Instrument, Covenant, Maximum Amount of Letters of Credit	$ 200,000
Debt Instrument, Covenant, Net Leverage Ratio, Maximum	2.00
Loans Payable [Member] | The TLB Facility [Member]
Repayments of Lines of Credit								4,848,000
Long-term Debt, Percentage Bearing Fixed Interest, Amount									$ 50,000,000			$ 150,000,000
Loans Payable [Member] | The TLB Facility [Member] | Forecast [Member]
Long-term Debt, Percentage Bearing Fixed Interest, Amount											$ 50,000,000
Loans Payable [Member] | The TLB Facility [Member] | Maximum [Member]
Debt Instrument, Repayment, Percent of Excess Cash Flow									75.00%
Loans Payable [Member] | The TLB Facility [Member] | Minimum [Member]
Debt Instrument, Repayment, Percent of Excess Cash Flow									0.00%
Loans Payable [Member] | Revolving Credit Facility [Member]
Finance Lease, Liability, Current			22,238,000				22,238,000		$ 20,743,000
Line of Credit Facility, Maximum Borrowing Capacity														300,000,000
Debt Instrument, Basis Spread on Variable Rate	0.50%
Loans Payable [Member] | Revolving Credit Facility [Member] | Senior Secured Second Lien Notes due 2025 [Member]
Debt Instrument, Covenant, Maximum Additional Borrowings	$ 0
Loans Payable [Member] | The TLB Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity														400,000,000
Line of Credit [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity													$ 400,000,000	$ 300,000,000
Letters of Credit Outstanding, Amount			157,501,000				157,501,000		169,241,000
Line of Credit Facility, Remaining Borrowing Capacity			$ 242,499,000				$ 242,499,000		$ 230,759,000
Line of Credit [Member] | Revolving Credit Facility [Member] | Forecast [Member]
Line of Credit Facility, Maximum Borrowing Capacity										$ 260,000,000
Line of Credit [Member] | Revolving Credit Facility and TLA Facility [Member]
Debt Instrument, Covenant, Net Leverage Ratio, Maximum			2.75				2.75
Debt Instrument, Covenant, Fixed Charge Coverage Ratio, Minimum			1.10				1.10
Debt Instrument, Covenant, First Lien Gross Leverage Ratio, Actual			0.38				0.38
Debt Instrument, Covenant, Net Leverage Ratio, Actual			0.46				0.46
Debt Instrument, Covenant, Fixed Charge Coverage Ratio, Actual			2.51				2.51
Line of Credit [Member] | Revolving Credit Facility and TLA Facility [Member] | Maximum [Member]
Debt Instrument, Covenant, First Lien Gross Leverage Ratio			1.75				1.75
Senior Notes [Member] | Senior Secured Second Lien Notes due 2025 [Member]
Debt Instrument, Interest Rate, Stated Percentage			11.00%				11.00%		11.00%					11.00%
Repayments of Debt							$ 26,387,000	14,153,000
Debt Instrument, Repurchased Face Amount			$ 25,000,000		$ 15,190,000		25,000,000	$ 15,190,000
Secured Debt [Member] | Other Asset Backed Financing Matures in September 2024 [Member]
Debt Instrument, Collateral Amount			$ 1,707,000				$ 1,707,000		$ 2,082,000
Debt, Weighted Average Interest Rate			3.61%				3.61%		3.61%