Annual report pursuant to Section 13 and 15(d)

Segment Information - Summary of Segment Percentages (Details)

v3.7.0.1
Segment Information - Summary of Segment Percentages (Details) - Sales Revenue, Product Line - Product Concentration Risk - Reportable Segments - Base USAP
12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Segment Reporting Information [Line Items]      
Percent of revenue 100.00% 100.00% 100.00%
Private Label Collision      
Segment Reporting Information [Line Items]      
Percent of revenue 51.00% 48.00% 43.00%
Private Label Engine      
Segment Reporting Information [Line Items]      
Percent of revenue 15.00% 14.00% 13.00%
Private Label Performance      
Segment Reporting Information [Line Items]      
Percent of revenue 1.00% 1.00% 1.00%
Branded Collision      
Segment Reporting Information [Line Items]      
Percent of revenue 2.00% 2.00% 2.00%
Branded Engine      
Segment Reporting Information [Line Items]      
Percent of revenue 12.00% 14.00% 16.00%
Branded Performance      
Segment Reporting Information [Line Items]      
Percent of revenue 19.00% 21.00% 25.00%