Common Equity And Earnings Per Share Data (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Common Equity And Earnings Per Share Data [Abstract]
Average dilutive shares outstanding		122,365	75,355	120,890	67,136
Potentially anti-dilutive shares outstanding		0	0	23,593	0
Common stock shares issued	440,000			440,000
Price per share	$ 35.00
Netted additional capital after expenses	$ 14,000			$ 14,142