Business and Summary of Significant Accounting Policies - Calculation of Dilutive Stock Awards (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Weighted Average Shares Outstanding	72,354	72,568	72,384
Dilutive Effect of Share-Based Awards	659	475	339
Weighted Average Shares Outstanding Assuming Dilution	73,013	73,043	72,723