FAIR VALUE MEASUREMENTS (Details) (USD $)	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Asset held for sale	$ 2,405,000	$ 1,750,000
Recurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Cash equivalents	5,400,000	6,600,000
Recurring Basis \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Recurring Basis \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Recurring Basis \| Estimated Fair Value
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Cash equivalents	5,400,000	6,600,000
Nonrecurring Basis
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Asset held for sale	0	1,800,000
Recognized loss	0
Nonrecurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Asset held for sale	0	0
Nonrecurring Basis \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Asset held for sale	0	0
Nonrecurring Basis \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Asset held for sale	0	1,800,000
Long Lived Assets Held-for-sale, Oklahoma City facility \| Nonrecurring Basis
Fair Value, Assets Measured on Recurring and Nonrecurring Basis
Recognized loss		$ 1,300,000

Fair value portion of assets classified as held for sale.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951

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

-Publisher FASB

-Name Accounting Standards Codification

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Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.

+ References

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

-Publisher FASB

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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