Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013		Dec. 29, 2012		Dec. 31, 2011
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
BALANCE AT BEGINNING OF PERIOD	$ 5,151		$ 4,838		$ 5,479
CHARGED TO COSTS AND EXPENSES	2,590		870		1,889
CHARGED TO OTHER ACCOUNTS (DESCRIBE)	0		0		0
DEDUCTIONS (DESCRIBE)	1,533	[1]	557	[1]	2,530	[1]
BALANCE AT END OF PERIOD	6,208		5,151		4,838
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
BALANCE AT BEGINNING OF PERIOD	1,580		1,616		1,630
CHARGED TO COSTS AND EXPENSES	0		0		2
CHARGED TO OTHER ACCOUNTS (DESCRIBE)	0		0		0
DEDUCTIONS (DESCRIBE)	1	[1]	36	[1]	16
BALANCE AT END OF PERIOD	$ 1,579		$ 1,580		$ 1,616

[1] Represents amounts written off, net of recoveries and other adjustments.