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Note 12 - Treasury Stock Transactions (Details Textual) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Aug. 09, 2016	Oct. 28, 2013
Stock Repurchase Program 2013 [Member]
Stock Repurchase Program, Authorized Amount				$ 5.0
Stock Repurchase Program, 2016 [Member]
Stock Repurchase Program, Authorized Amount			$ 5.0
Treasury Stock, Shares, Acquired	357,250	103,182
Treasury Stock Acquired, Average Cost Per Share	$ 5.54	$ 4.92
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 5.2

X

- Definition

Amount of stock repurchase plan authorized.

+ References

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X

- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

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X

- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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