Note Payable (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt Disclosure
Number of lines of credit	1
Aggregate borrowing capacity	$ 300
Accordian feature available amount	300
Note payable	$ 25	$ 50
Ratio of debt-to-total capital maximum	0.35
Minimum [Member]
Debt Disclosure
Line of credit, interest rate	5.27%	0.99%
Maximum
Debt Disclosure
Line of credit, interest rate	6.33%	5.00%