Investments (Gross Gains And Losses Realized) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments [Abstract]
Gross unrealized gains recognized on equity securities still held	$ 223	$ 888	$ 208
Gross unrealized losses recognized on equity securities still held	(1,086)	0	(298)
Net unrealized (losses) gains recognized on equity securities still held	(863)	888	(90)
Gross realized gains	139	226	0
Gross realized losses	(77)	(157)	0
Net realized investment security gains	$ 62	$ 69	$ 0