Income Taxes - Schedule of Income Tax Expense Reconciled to Tax Computed at Statutory Rates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Expense
Federal Income Taxes	$ 792,000	$ 957,000	$ 1,014,000
State Income Taxes	102,000	147,000	158,000
Other Adjustments	24,000	(19,000)	(11,000)
Total Income Tax Expense	$ 880,000	$ 1,085,000	$ 1,161,000
Rate
Federal Income Taxes	21.00%	21.00%	21.00%
State Income Taxes	2.70%	3.20%	3.30%
Other	0.60%	(0.40%)	(0.20%)
Effective Income Tax Rate	23.30%	23.80%	24.10%