Leases (Details) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Capitalized Leases
Capital leases, 2013	$ 129,000
Capital leases, 2014	108,000
Capital leases, 2015	0
Capital leases, 2016	0
Capital leases, 2017	0
Thereafter	0
Total minimum lease payments	237,000
Less: amount representing interest	11,000
Present value of net minimum lease payments, including current maturities of $109	226,000
Current maturities	0
Operating Leases
Operating leases, 2013	28,754,000
Operating leases, 2014	24,457,000
Operating leases, 2015	20,394,000
Operating leases, 2016	8,725,000
Operating leases, 2017	5,662,000
Thereafter	14,067,000
Total minimum lease payments	102,059,000
Capitalized Leases, Assets
Office equipment	570,000	570,000	570,000
Less: allowances for depreciation	346,000	232,000	118,000
Capital leased assets, net	224,000	338,000	452,000
Rent expense	$ 41,500,000	$ 37,600,000	$ 29,100,000