Share-Based Payments - Table 1 (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Weighted Average Assumptions Used to Determine Fair Value of Stock Options
Expected volatility	39.50%	40.30%	41.80%
Risk-free interest rate	1.90%	2.20%	1.40%
Expected life (years)	7 years 8 months 12 days	7 years 2 months	7 years 2 months
Dividend yield	2.10%	2.10%	0.00%