Note 2 - Acquisition of Businesses (Details) - Unaudited Pro Forma Results (Hamlin, Inc. [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 29, 2014	Mar. 30, 2013
Hamlin, Inc. [Member]
Note 2 - Acquisition of Businesses (Details) - Unaudited Pro Forma Results [Line Items]
Revenues	$ 206,859	$ 188,709
Net income	$ 25,389	$ 12,211
Net income per share:
Basic	$ 1.13	$ 0.56
Diluted	$ 1.12	$ 0.55
Weighted-average shares and equivalent shares outstanding:
Basic	22,492	22,095
Diluted	22,717	22,366

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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