Stock-Based Compensation - Schedule of Assumptions Used in Determining the Estimated the Fair Value of Stock Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assumptions used in determining the estimated fair value of stock options
Risk-free interest rate (as a percent)	1.62%	1.56%	2.17%
Expected option life, Executive	6 years 9 months 7 days	6 years 10 months 2 days	6 years 10 months 17 days
Expected option life, Non-Executive	4 years 8 months 19 days	6 years 1 month 2 days	6 years 2 months 5 days
Dividend yield (as a percent)	1.00%	1.00%
Volatility (as a percent)	38.41%	35.59%	37.52%
Weighted-average fair value per option granted	$ 14.65	$ 14.95	$ 17.91