Equity-Based Employee Compensation (Details 1)	12 Months Ended
	Dec. 29, 2012		Dec. 31, 2011
Schedule of option pricing model
Dividend yield	0.00%		0.00%
Expected volatility	44.70%	[1]	50.00%	[1]
Minimum
Schedule of option pricing model
Expected term	1 year		1 year
Risk-free interest rate	0.14%		0.05%
Maximum
Schedule of option pricing model
Expected term	3 years		4 years
Risk-free interest rate	0.15%		0.17%

[1] Expected volatility is based upon a peer group of companies given no historical data for the Units.