Earnings Per Share (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Weighted-average common shares – basic (in shares)	165,012,713	170,312,328	172,764,838
Plus incremental weighted-average shares resulting from the assumed conversion of time-vested restricted stock awards (in shares)	124,769	128,895	216,109
Weighted-average common shares – diluted (in shares)	165,137,482	170,441,223	172,980,947