Earnings Per Share (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Weighted-average common shares – basic	154,325,073	164,683,173	154,495,761	166,597,577
Deferred stock awards (in shares)	236,000	113,000	169,000	136,000
Weighted-average common shares outstanding – diluted	154,561,362	164,796,275	154,664,834	166,734,464