SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|
| Accounting Policies [Abstract] | ||||
| Accrued capital expenditures | $ 24,632 | $ 24,629 | ||
| Accrued payroll | 6,824 | 7,719 | ||
| Accrued environmental credit rebates | 5,002 | 4,993 | ||
| Accrued expenses | 14,735 | 12,062 | ||
| Other current liabilities | 11,697 | 14,454 | ||
| Total accrued expenses and other current liabilities | [1] | $ 62,890 | $ 63,857 | |
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