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Note 7 - Segement Information - Reconciliation of Segment Depreciation and Amortization (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Oct. 04, 2015	Oct. 02, 2016	Oct. 04, 2015
Operating Segments [Member]
Depreciation and Amortization	$ 7,101,000	$ 7,338,000	$ 21,325,000	$ 22,256,000
Corporate, Non-Segment [Member]
Depreciation and Amortization	413,000	311,000	1,149,000	932,000
Depreciation and Amortization	$ 7,514,000	$ 7,649,000	$ 22,474,000	$ 23,188,000

X

- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Period Type: