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Fair Value Measurements - Contingent Consideration (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2024
Changes in contingent consideration liability
Beginning balance	$ 11,324	$ 8,469	$ 13,100	$ 9,900
Payments	(2,652)	(2,380)	(4,428)	(3,811)
Ending balance	10,677	6,089	10,677	6,089
Product
Changes in contingent consideration liability
Noncash changes in fair value	$ 2,005	$ 0	$ 2,005	$ 0
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization
Cost of Debt | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, Measurement input	0.0651		0.0651
Cost of Debt | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, Measurement input	0.0856		0.0856
Coal price volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, Measurement input	0.062		0.062		0.062
Coal price volatility | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, Measurement input					0.0651
Coal price volatility | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, Measurement input					0.0856
Market price of risk adjustment (annual)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, Measurement input	0.062		0.062		0.062

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