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Stockholders' Equity (Details 4) (USD $)	12 Months Ended
	Dec. 28, 2012	Dec. 30, 2011
Lower Range of Exercise Prices	$ 0.95
Upper Range of Exercise Prices	$ 7.86
Number Outstanding at December 28, 2012	3,376,000	3,064,000
Options Outstanding Weighted - Average Remaining Contractual Life	6 years 3 months 26 days
Weighted - Average Exercise Price	$ 5.89	$ 4.79
Number Exercisable at December 28, 2012	2,176,000
Weighted - Average Exercise Price	$ 4.62
Range One [Member]
Lower Range of Exercise Prices	$ 0.95
Number Outstanding at December 28, 2012	40,000
Options Outstanding Weighted - Average Remaining Contractual Life	6 years 3 months
Weighted - Average Exercise Price	$ 0.95
Number Exercisable at December 28, 2012	40,000
Weighted - Average Exercise Price	$ 0.95
Range Two [Member]
Lower Range of Exercise Prices	$ 1.56
Upper Range of Exercise Prices	$ 2.30
Number Outstanding at December 28, 2012	372,000
Options Outstanding Weighted - Average Remaining Contractual Life	5 years 3 months 15 days
Weighted - Average Exercise Price	$ 2.21
Number Exercisable at December 28, 2012	372,000
Weighted - Average Exercise Price	$ 2.21
Range Three [Member]
Lower Range of Exercise Prices	$ 2.45
Upper Range of Exercise Prices	$ 3.60
Number Outstanding at December 28, 2012	266,000
Options Outstanding Weighted - Average Remaining Contractual Life	6 years 4 months 17 days
Weighted - Average Exercise Price	$ 3.25
Number Exercisable at December 28, 2012	203,000
Weighted - Average Exercise Price	$ 3.20
Range Four [Member]
Lower Range of Exercise Prices	$ 3.75
Upper Range of Exercise Prices	$ 5.29
Number Outstanding at December 28, 2012	702,000
Options Outstanding Weighted - Average Remaining Contractual Life	4 years 3 months 7 days
Weighted - Average Exercise Price	$ 4.29
Number Exercisable at December 28, 2012	631,000
Weighted - Average Exercise Price	$ 4.23
Range Five [Member]
Lower Range of Exercise Prices	$ 5.39
Upper Range of Exercise Prices	$ 7.32
Number Outstanding at December 28, 2012	1,181,000
Options Outstanding Weighted - Average Remaining Contractual Life	6 years 9 months 29 days
Weighted - Average Exercise Price	$ 5.86
Number Exercisable at December 28, 2012	748,000
Weighted - Average Exercise Price	$ 5.91
Range Six [Member]
Lower Range of Exercise Prices	$ 7.50
Upper Range of Exercise Prices	$ 8.12
Number Outstanding at December 28, 2012	815,000
Options Outstanding Weighted - Average Remaining Contractual Life	7 years 9 months 18 days
Weighted - Average Exercise Price	$ 10.08
Number Exercisable at December 28, 2012	182,000
Weighted - Average Exercise Price	$ 8.05

X

- Definition

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 Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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



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-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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X

- Definition

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 Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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



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X

- 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

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

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-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

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-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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+ References

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

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-Name Accounting Standards Codification

-Topic 718

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- Definition

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

+ References

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

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-Topic 718

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X

- 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

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-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.



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+ References

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-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.



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