Schedule of Assumptions Used to Estimate the Fair Value of Stock Options Granted (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 28, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Risk-free interest rate, minimum	1.43%	2.18%	2.39%
Risk-free interest rate, maximum	2.40%	2.36%	2.88%
Expected term (in years)	10 years	10 years	10 years
Expected volatility, minimum	24.03%	27.24%	32.87%
Expected volatility, maximum	26.95%	27.60%	39.35%