Earnings per Share (Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income per Common Share) (Details) - shares	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Earnings per Share [Abstract]
Basic method	172,974,491		172,524,061	[1]	172,173,012	[1]
Dilutive stock options	1,234,274	[2]	0		0
Diluted method	174,208,765		172,524,061	[1]	172,173,012	[1]

[1] Reclassified to conform to current presentation (see Note B).

[2] Due to a net loss recognized by the Company for the years ended December 31, 2017 and 2016, no unvested stock awards were included in the computation of diluted earnings per share because the effect would have been antidilutive.