Common and Preferred Stock (Narrative) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock dividend rate percentage	5.00%
Common stock, par value	$ 5.00	$ 5.00
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares)	223,000	159,000	88,000
Shares available for purchase under the current Board authorization			5,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	2,249,563