Capital Stock (Details 2) (USD $)	12 Months Ended
Dec. 29, 2012
Summary of information concerning currently outstanding and exercisable options
Number Outstanding	274,000
Weighted Average Remaining Contractual Life (Years)	5 years
Weighted Average Exercise Price	$ 8.62
Number Exercisable	200,000
Options Exercisable, Weighted Average Exercise Price	$ 6.57
Range One [Member]
Summary of information concerning currently outstanding and exercisable options
Option Price per share, Minimum	$ 2.54
Number Outstanding	34,000
Weighted Average Remaining Contractual Life (Years)	4 months 24 days
Weighted Average Exercise Price	$ 2.54
Number Exercisable	34,000
Options Exercisable, Weighted Average Exercise Price	$ 2.54
Range Two [Member]
Summary of information concerning currently outstanding and exercisable options
Option Price per share, Minimum	$ 5.05
Option Price per share, Maximum	$ 5.67
Number Outstanding	53,000
Weighted Average Remaining Contractual Life (Years)	5 years 10 months 24 days
Weighted Average Exercise Price	$ 5.66
Number Exercisable	37,000
Options Exercisable, Weighted Average Exercise Price	$ 5.65
Range Three [Member]
Summary of information concerning currently outstanding and exercisable options
Option Price per share, Minimum	$ 6.24
Option Price per share, Maximum	$ 7.74
Number Outstanding	137,000
Weighted Average Remaining Contractual Life (Years)	4 years 6 months
Weighted Average Exercise Price	$ 6.87
Number Exercisable	117,000
Options Exercisable, Weighted Average Exercise Price	$ 6.72
Range Four [Member]
Summary of information concerning currently outstanding and exercisable options
Option Price per share, Minimum	$ 19.37
Number Outstanding	30,000
Weighted Average Remaining Contractual Life (Years)	8 years
Weighted Average Exercise Price	$ 19.37
Number Exercisable	12,000
Options Exercisable, Weighted Average Exercise Price	$ 19.37
Range Five [Member]
Summary of information concerning currently outstanding and exercisable options
Option Price per share, Minimum	$ 22.71
Number Outstanding	20,000
Weighted Average Remaining Contractual Life (Years)	9 years 2 months 12 days
Weighted Average Exercise Price	$ 22.71
Number Exercisable
Options Exercisable, Weighted Average Exercise Price

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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)

-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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(a, b)

-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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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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