Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Other Comprehensive Income [Abstract]
Amortization of prior service cost, tax	$ 5	$ 3	$ 9	$ 5
Net gain, tax	0	0	0	0
Unrealized (loss)/gain on commodity contract cash flow hedges, tax	72	(784)	606	(775)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Interest Rate Swaps During Period, Tax	32	267	175	213
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of prior service cost, tax	5	3	9	5
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax	0	0	0	0
Unrealized (loss)/gain on commodity contract cash flow hedges, tax	72	(784)	606	(775)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Interest Rate Swaps During Period, Tax	32	267	175	213
Accumulated (Gain) Loss from Commodity Contracts Cash Flows Hedges [Member]
Statement of Other Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	11	119	(282)	(48)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	11	119	(282)	(48)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Statement of Other Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	(43)	(33)	(87)	(50)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	$ (43)	$ (33)	$ (87)	$ (50)