FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Recurring Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Assets:
Restricted investment securities - landfill closure	$ 2,951	$ 96,265
Derivative Asset, Statement Of Financial Position Extensible Enumeration, Not Disclosed Flag	Interest rate swaps	Interest rate swaps
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Total assets	$ 2,951	$ 3,179
Liabilities:
Interest rate swaps	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swaps
Assets:
Interest rate swaps	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Landfill
Assets:
Restricted investment securities - landfill closure	2,951	3,179
Significant Other Observable Inputs (Level 2)
Assets:
Total assets	3,064	2,916
Liabilities:
Interest rate swaps	5,342	8,421
Significant Other Observable Inputs (Level 2) | Interest rate swaps
Assets:
Interest rate swaps	3,064	2,916
Significant Other Observable Inputs (Level 2) | Landfill
Assets:
Restricted investment securities - landfill closure	0	0
Significant Unobservable Inputs (Level 3)
Assets:
Total assets	0	0
Liabilities:
Interest rate swaps	0	0
Significant Unobservable Inputs (Level 3) | Interest rate swaps
Assets:
Interest rate swaps	0	0
Significant Unobservable Inputs (Level 3) | Landfill
Assets:
Restricted investment securities - landfill closure	$ 0	$ 0