Business Segments	12 Months Ended
Dec. 29, 2018
Segment Reporting [Abstract]
Business Segments	15. Business Segments We have determined that our business comprises a single reportable operating segment, namely, the sale of replacement parts for the automotive aftermarket. During fiscal 2018, fiscal 2017 and fiscal 2016, four of our customers (Advance Auto Parts, Inc., AutoZone, Inc., Genuine Parts Co. – NAPA, and O’Reilly Automotive, Inc.) each accounted for more than 10% of net sales and in aggregate accounted for 63% of net sales in fiscal 2018, 61% in fiscal 2017 and 60% in fiscal 2016. Net sales to countries outside the United States, primarily to Canada and Mexico, and to a lesser extent into Europe, the Middle East, and Australia in fiscal 2018, fiscal 2017 and fiscal 2016 were $60.5 million, $55.8 million and $48.6 million, respectively.

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-URI http://asc.fasb.org/topic&trid=2134510

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