Earnings per Share (Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income per Common Share) (Details) - shares		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Earnings per Share [Abstract]
Basic method		172,422,449	172,114,012
Dilutive stock options and restricted stock units	[1]	666,242
Diluted method		173,088,691	172,114,012

[1] Due to a net loss, recognized by the Company for the 2016 period, no unvested stock awards were included in the computation of diluted earnings per share because the effect would have been anti-dilutive.