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Note 20 - Selected Quarterly Financial Information (Unaudited) (Detail) - Quarterly financial information (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 29, 2012 | Sep. 29, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Oct. 01, 2011 | Jul. 02, 2011 | Apr. 02, 2011 | Dec. 29, 2012 | Dec. 31, 2011
Revenues | $ 37,019 | $ 34,839 | $ 35,753 | $ 38,206 | $ 35,032 | $ 33,559 | $ 36,514 | $ 38,706 | $ 145,817 | $ 143,811
Gross profit | 10,099 | 9,675 | 9,656 | 10,285 | 10,128 | 9,098 | 10,460 | 11,050 | 39,715 | 40,736
Operating income | 1,330 | 1,107 | 1,015 | 1,776 | 2,187 | 742 | 2,023 | 2,057 | 5,228 | 7,009
Income from continuing operations | $ 1,029 | $ 634 | $ 505 | $ 1,059 | $ 1,137 | $ 724 | $ 1,242 | $ 1,175 | $ 3,227 | $ 4,278
Diluted income from continuing operations (in Dollars per share) | $ 0.09 | $ 0.05 | $ 0.04 | $ 0.08 | $ 0.09 | $ 0.06 | $ 0.09 | $ 0.09 | $ 0.26 | $ 0.33

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