Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Reconciliation of the average shares outstanding used to compute basic and diluted earnings per share

The following is a reconciliation of the average shares outstanding used to compute basic and diluted earnings per share: 

	2015	2014	2013
Basic weighted average common shares outstanding	136,036,192	134,934,892	132,894,179
Effect of dilutive securities - stock awards	1,397,623	2,416,417	2,436,014
Diluted weighted average common shares outstanding	137,433,815	137,351,309	135,330,193