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v3.23.1

DEBT - Summary of Debt (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |
Weighted-average discount rate - finance leases | 3.70% |
Finance leases maturing through December 2107; bearing interest at a weighted average of 3.7% | $ 48,800 | $ 49,813
Principal amount of debt | 596,116 | 603,477
Less - unamortized debt issuance costs | 9,275 | 9,494
Debt less unamortized debt issuance costs | 586,841 | 593,983
Less—current maturities of debt | 9,274 | 8,968
Debt, less current portion | $ 577,567 | $ 585,015
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Debt, less current portion | Debt, less current portion
Secured Debt | Term loan A facility ("Term Loan Facility") due December 2026; bearing interest at term secured overnight financing rate ("Term SOFR") plus 1.135% |  |
Debt Instrument [Line Items] |  |
Principal amount of debt | $ 350,000 | $ 350,000
Secured Debt | Term loan A facility ("Term Loan Facility") due December 2026; bearing interest at term secured overnight financing rate ("Term SOFR") plus 1.135% | SOFR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 1.135% |
Line of Credit | Revolving credit facility ("Revolving Credit Facility") due December 2026; bearing interest at Term SOFR plus 1.135% |  |
Debt Instrument [Line Items] |  |
Principal amount of debt | $ 0 | 6,000
Credit Facility | Revolving Credit Facility and Term Loan Facility (collectively, the "Credit Facility") |  |
Debt Instrument [Line Items] |  |
Less - unamortized debt issuance costs | $ 4,692 | 4,716
Unsecured Debt | New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2014 ("New York Bonds 2014R-1") due December 2044 - fixed rate interest period through 2029; bearing interest at 2.875% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 2.875% |
Principal amount of debt | $ 25,000 | 25,000
Less - unamortized debt issuance costs | $ 849 | 866
Unsecured Debt | New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2014R-2 ("New York Bonds 2014R-2") due December 2044 - fixed rate interest period through 2026; bearing interest at 3.125% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.125% |
Principal amount of debt | $ 15,000 | 15,000
Less - unamortized debt issuance costs | $ 192 | 207
Unsecured Debt | New York State Environmental Facilities Corporation Solid Waste Disposal Revenue Bonds Series 2020 ("New York Bonds 2020") due September 2050 - fixed rate interest period through 2025; bearing interest at 2.750% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 2.75% |
Principal amount of debt | $ 40,000 | 40,000
Less - unamortized debt issuance costs | $ 1,061 | 1,106
Unsecured Debt | Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2005R-3 ("FAME Bonds 2005R-3") due January 2025 - fixed rate interest period through 2025; bearing interest at 5.25% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 5.25% |
Principal amount of debt | $ 25,000 | 25,000
Less - unamortized debt issuance costs | $ 155 | 176
Unsecured Debt | Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2015R-1 ("FAME Bonds 2015R-1") due August 2035 - fixed rate interest period through 2025; bearing interest at 5.125% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 5.125% |
Principal amount of debt | $ 15,000 | 15,000
Less - unamortized debt issuance costs | $ 326 | 344
Unsecured Debt | Finance Authority of Maine Solid Waste Disposal Revenue Bonds Series 2015R-2 ("FAME Bonds 2015R-2") due August 2035 - fixed rate interest period through 2025; bearing interest at 4.375% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.375% |
Principal amount of debt | $ 15,000 | 15,000
Less - unamortized debt issuance costs | $ 175 | 193
Unsecured Debt | Vermont Economic Development Authority Solid Waste Disposal Long-Term Revenue Bonds Series 2013 ("Vermont Bonds 2013") due April 2036 - fixed rate interest period through 2028; bearing interest at 4.625% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.625% |
Principal amount of debt | $ 16,000 | 16,000
Less - unamortized debt issuance costs | $ 365 | 378
Unsecured Debt | Vermont Economic Development Authority Solid Waste Disposal Long-Term Revenue Bonds Series 2022A-1 ("Vermont Bonds 2022A-1") due June 2052 - fixed rate interest period through 2027; bearing interest at 5.00% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 5.00% |
Principal amount of debt | $ 35,000 | 35,000
Less - unamortized debt issuance costs | $ 1,111 | 1,144
Unsecured Debt | Business Finance Authority of the State of New Hampshire Solid Waste Disposal Revenue Bonds Series 2013 ("New Hampshire Bonds") due April 2029 - fixed rate interest period through 2029; bearing interest at 2.95% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 2.95% |
Principal amount of debt | $ 11,000 | 11,000
Less - unamortized debt issuance costs | $ 349 | 364
Notes payable maturing through August 2024; bearing interest up to 4.0% |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.00% |
Principal amount of debt | $ 316 | $ 664

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