Note 3 - Acquisition of Businesses (Details) - Unaudited Pro Forma Results (Hamlin, Inc. [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Hamlin, Inc. [Member]
Note 3 - Acquisition of Businesses (Details) - Unaudited Pro Forma Results [Line Items]
Revenues (in Dollars)	$ 201,040	$ 191,516	$ 591,095	$ 559,759
Net income (in Dollars)	$ 26,990	$ 23,841	$ 68,938	$ 65,606
Net income per share:
Basic (in Dollars per share)	$ 1.20	$ 1.09	$ 3.09	$ 3.01
Diluted (in Dollars per share)	$ 1.19	$ 1.08	$ 3.06	$ 2.97
Weighted-average shares and equivalent shares outstanding:
Basic	22,428	21,923	22,274	21,770
Diluted	22,625	22,162	22,497	22,055

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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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