Earnings per Share (Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income per Common Share) (Details) - shares		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings per Share [Abstract]
Basic method		172,572,873	172,199,350	172,509,418	172,164,683
Dilutive stock options and restricted stock units	[1]	0	0	0	0
Diluted method		172,572,873	172,199,350	172,509,418	172,164,683

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