Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets
Accrued expenses and allowances	$ 41,894,000	$ 34,052,000
Inventories	10,685,000	8,028,000
Net operating loss carryforwards	7,663,000	16,412,000
Amortizable assets	5,798,000
Other	9,149,000	8,091,000
Subtotal	75,189,000	66,583,000
Less: valuation allowance	(816,000)	(805,000)
Total net deferred tax assets	74,373,000	65,778,000
Deferred tax liabilities
Property, plant and equipment	(1,013,045,000)	(951,404,000)
Amortizable Assets		(1,304,000)
Other	(6,096,000)	(2,173,000)
Total deferred tax liabilities	(1,019,141,000)	(954,881,000)
Net deferred tax liability	$ (944,768,000)	$ (889,103,000)