Investments (Gross Gains And Losses Realized) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments [Abstract]
Gross unrealized gains recognized on equity securities still held	$ 769,000	$ 38,000	$ 547,000
Gross unrealized losses recognized on equity securities still held	(337,000)	(1,623,000)	(43,000)
Net unrealized (losses) gains recognized on equity securities still held	432,000	(1,585,000)	504,000
Gross realized gains	996,000	4,000	312,000
Gross realized losses	(5,904,000)	0	0
Net realized investment security (losses) gains	(4,908,000)	4,000	312,000
Proceeds from sales	$ 205,627,000	$ 0	$ 0