Related-Party Transactions (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		3 Months Ended
	Jul. 01, 2014 Dividend Paid [Member] Class C Common Stock [Member] Equity Sponsors [Member]	Jul. 02, 2013 Dividend Paid [Member] Class C Common Stock [Member] Equity Sponsors [Member]	Jul. 02, 2013 Bonuses and Payroll Taxes [Member]	Jul. 02, 2013 Transaction Payments [Member] Equity Sponsors [Member]
Related Party Transaction [Line Items]
Amount paid to related party	$ 250	$ 375	$ 1,700	$ 800