Investments and Fair Value Measurements (Details) (USD $)	Oct. 04, 2013	Dec. 28, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement of assets	$ 11,354,000	$ 15,821,000
Fair value transfers, assets	0	0
Other Non-Current Assets [Member] | Deferred Compensation Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement of assets	11,354,000	11,070,000
Bank Time Deposits [Member] | Short-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement of assets		4,751,000
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement of assets	736,000	342,000
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Other Non-Current Assets [Member] | Deferred Compensation Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement of assets	736,000	342,000
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Bank Time Deposits [Member] | Short-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement of assets
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement of assets	10,618,000	15,479,000
Significant Other Observable Inputs (Level 2) [Member] | Other Non-Current Assets [Member] | Deferred Compensation Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement of assets	10,618,000	10,728,000
Significant Other Observable Inputs (Level 2) [Member] | Bank Time Deposits [Member] | Short-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement of assets		$ 4,751,000