Derivatives (Details) (USD $)	12 Months Ended											12 Months Ended										12 Months Ended										12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Dec. 29, 2012 Derivatives Designated as Hedging Instruments [Member] Cash Flow Hedging [Member]		Dec. 29, 2012 2006 Swap Agreement [Member] Derivatives Designated as Hedging Instruments [Member] Cash Flow Hedging [Member]	Dec. 29, 2012 2008 Swap Agreement [Member]	Dec. 29, 2012 2008 Swap Agreement [Member] Derivatives Designated as Hedging Instruments [Member] Cash Flow Hedging [Member]	Dec. 31, 2011 2008 Swap Agreement [Member] Derivatives Designated as Hedging Instruments [Member] Cash Flow Hedging [Member]	Jan. 01, 2011 2008 Swap Agreement [Member] Derivatives Designated as Hedging Instruments [Member] Cash Flow Hedging [Member]	Jan. 02, 2010 2008 Swap Agreement [Member] Derivatives Designated as Hedging Instruments [Member] Cash Flow Hedging [Member]	Dec. 29, 2012 Interest Rate Swap Agreements [Member] Derivatives Designated as Hedging Instruments [Member] Cash Flow Hedging [Member]		Dec. 29, 2012 Interest Rate Swap Agreements [Member] Derivatives Designated as Hedging Instruments [Member] Other Current Liabilities [Member]		Dec. 31, 2011 Interest Rate Swap Agreements [Member] Derivatives Designated as Hedging Instruments [Member] Other Current Liabilities [Member]		Dec. 29, 2012 Interest Rate Swap Agreements [Member] Derivatives Designated as Hedging Instruments [Member] Other Long Term Liabilities [Member]		Dec. 31, 2011 Interest Rate Swap Agreements [Member] Derivatives Designated as Hedging Instruments [Member] Other Long Term Liabilities [Member]		Dec. 29, 2012 Forward Currency-Exchange Contracts [Member] Derivatives Designated as Hedging Instruments [Member] Cash Flow Hedging [Member]		Dec. 29, 2012 Forward Currency-Exchange Contracts [Member] Derivatives Designated as Hedging Instruments [Member] Other Current Assets [Member]		Dec. 31, 2011 Forward Currency-Exchange Contracts [Member] Derivatives Designated as Hedging Instruments [Member] Other Current Assets [Member]		Dec. 29, 2012 Forward Currency-Exchange Contracts [Member] Derivatives Designated as Hedging Instruments [Member] Other Current Liabilities [Member]		Dec. 31, 2011 Forward Currency-Exchange Contracts [Member] Derivatives Designated as Hedging Instruments [Member] Other Current Liabilities [Member]		Dec. 29, 2012 Forward Currency-Exchange Contracts [Member] Derivatives Not Designated as Hedging Instruments [Member]	Dec. 31, 2011 Forward Currency-Exchange Contracts [Member] Derivatives Not Designated as Hedging Instruments [Member]	Jan. 01, 2011 Forward Currency-Exchange Contracts [Member] Derivatives Not Designated as Hedging Instruments [Member]	Dec. 29, 2012 Forward Currency-Exchange Contracts [Member] Derivatives Not Designated as Hedging Instruments [Member] Other Current Assets [Member]		Dec. 31, 2011 Forward Currency-Exchange Contracts [Member] Derivatives Not Designated as Hedging Instruments [Member] Other Current Assets [Member]		Dec. 29, 2012 Forward Currency-Exchange Contracts [Member] Derivatives Not Designated as Hedging Instruments [Member] Other Current Liabilities [Member]		Dec. 31, 2011 Forward Currency-Exchange Contracts [Member] Derivatives Not Designated as Hedging Instruments [Member] Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative term								P5Y
Interest Rate Swaps [Abstract]
Notional value									$ 5,000,000	$ 10,000,000	$ 15,000,000
Description of variable rate basis						Under the 2006 Swap Agreement, the Company receives a three-month LIBOR rate and pays a fixed rate of interest of 5.63% plus an applicable margin.		Under the 2008 Swap Agreement, on a quarterly basis the Company received a three-month LIBOR rate and paid a fixed rate of interest of 3.265% plus the applicable margin.
Fixed rate of interest (in hundredths)						5.63%		3.265%
Rate of effectiveness of interest rate swap agreement (in hundredths)								100.00%
Financial covenants								maximum consolidated leverage ratio of 3.5 to 1, and a minimum consolidated interest charge coverage ratio of 3 to 1
Maximum capital expenditures							25,000,000
Maximum consolidated leverage ratio								3.5
Minimum consolidated interest coverage ratio								3
Unrealized loss on derivatives				1,048,000
Forward Currency-Exchange Contracts [Abstract]
Maximum period over which entity manages its level of exposure of risk																						12 months
Recognized gains (losses)																																12,000	4,000	(34,000)
Derivatives in an Asset Position [Abstract]
Derivatives in an asset position																								5,000	[1]	22,000	[1]								24,000	[1]	0	[1]
Notional amount, Derivative asset																								269,000	[2]	421,000	[2]								1,013,000	[2]	0	[2]
Derivatives in a Liability Position [Abstract]
Derivatives in a liability position														(19,000)	[1]	0	[1]	(1,029,000)	[1]	(1,401,000)	[1]							(161,000)	[1]	(462,000)	[1]								(12,000)	[1]	(82,000)	[1]
Notional amount, Derivative liability														0	[2]	0	[2]	6,875,000	[2]	12,250,000	[2]							3,180,000	[2]	6,635,000	[2]								815,000	[2]	1,775,000	[2]
Accumulated Other Comprehensive Items, Net of Tax [Abstract]
Unrealized loss, net of tax, at beginning of period	(1,433,000)			1,433,000								1,166,000										267,000
Loss reclassified to earnings	(592,000)	(417,000)	(572,000)	(592,000)	[3]							(328,000)	[3]									(264,000)	[3]
Loss recognized in OCI	387,000	(193,000)	(166,000)	205,000								101,000										104,000
Unrealized loss, net of tax, at end of period	(1,046,000)	(1,433,000)		1,046,000								939,000										107,000
Net unrealized loss included in OCI expected to be reclassified to earnings over the next 12 months				$ 346,000

[1] See Note 11 for the fair value measurements relating to these financial instruments.

[2] The total notional amount is indicative of the level of the Company's derivative activity during 2012 and 2011.

[3] Included in interest expense for interest rate swap agreements and in revenues for forward currency-exchange contracts in the accompanying consolidated statement of income.