Significant Accounting Policies (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2014 item		Dec. 29, 2013		Dec. 30, 2012
Significant Accounting Policies
Other comprehensive income (loss), before tax	$ (261)	[1]	$ (51)	[1]	$ (114)	[1]
Other comprehensive income (loss), net of tax	$ (164)		$ (32)		$ (72)
Noncontrolling Interests
Number of joint ventures	4

[1] Amounts reclassified out of accumulated other comprehensive income (“AOCI”) into interest expense included $996, $501 and $150 for the years ended December 28, 2014, December 29, 2013 and December 30, 2012, respectively.