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Note 14 - Segment Information - Revenues by Geographic Area (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 30, 2017 | Dec. 31, 2016
Revenues |  |
Revenues | $ 186,737 | $ 176,448
UNITED STATES |  |
Revenues |  |
Revenues | 152,232 | 146,950
CANADA |  |
Revenues |  |
Revenues | 30,084 | 24,423
PUERTO RICO |  |
Revenues |  |
Revenues | 4,043 | 5,075
SERBIA |  |
Revenues |  |
Revenues | $ 378 |

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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