Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 18,271	$ 16,133	$ 64,439	$ 52,477
Reclassifications of amortization of prior service credit and actuarial loss, net of tax of $5, $3, $9 and $5, respectively	14	12	27	21
Other comprehensive income (loss)	210	(1,076)	1,162	(1,680)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	18,481	15,057	65,601	50,797
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(989)	(247)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			989	247
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			2,151	(1,433)
Reclassifications of amortization of prior service credit and actuarial loss, net of tax of $5, $3, $9 and $5, respectively	14	12	27	21
Net Income	18,271	16,133	64,439	52,477
Other comprehensive income (loss)	210	(1,076)	1,162	(1,680)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	18,481	15,057	65,601	50,797
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Statement of Comprehensive Income [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(127)	(94)	(255)	(142)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	127	94	255	142
Accumulated (Gain) Loss from Commodity Contracts Cash Flows Hedges [Member]
Statement of Comprehensive Income [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	30	313	(761)	(126)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(30)	(313)	761	126
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	199	(2,065)	1,640	(2,045)
Accumulated (Gain) Loss from Interest Rate Swap Cash Flows Hedges [Member]
Statement of Comprehensive Income [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(255)	(142)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			255	142
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	$ 94	$ 758	$ 511	$ 612