Stock-Based Compensation (Details 1) (USD $)	6 Months Ended
Jul. 02, 2011
Stock option equity incentive plans
Outstanding at January 1, 2011	603,000
Granted	17,500
Canceled	0
Exercised	(1,500)
Outstanding at July 2, 2011	619,000
Exercisable at July 2, 2011	413,700
Outstanding at January 1, 2011, Wtd. Avg. Ex. Price	$ 38.83
Granted, Wtd. Avg. Ex. Price	$ 37.75
Canceled, Wtd. Avg. Ex. Price	$ 0
Exercised, Wtd. Avg. Ex. Price	$ 26.01
Outstanding at July 2, 2011, Wtd. Avg. Ex. Price	$ 38.83
Exercisable at July 2, 2011, Wtd. Avg. Ex. Price	$ 39.92

Share Based Compensation Arrangement By Share Based Payment Award Option Exercises In Period Weighted Average Exercise Price.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Option Forfeitures In Period Weighted Average Exercise Price.

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Share Based Compensation Arrangement By Share Based Payment Award Option Grants In Period Weighted Average Exercise Price.

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- Definition

Stock option equity incentive plan.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(1)(c), d(2)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(1)(c)
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-Topic 718
-SubTopic 10
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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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-Publisher FASB
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-Number 123R
-Paragraph A240
-Subparagraph b(1)(f)
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- Definition

Net number of share options (or share units) granted during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(1)(d)
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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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- Definition

The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(1)(a)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Number of share options (or share units) exercised during the current period.

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