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Segment Information - Summarized Segment Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Apr. 02, 2016 | Apr. 04, 2015 | Jan. 02, 2016
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | $ 80,806 | $ 76,388 |
Gross profit |  | 24,592 | 21,478 |
Operating costs | [1] | 23,410 | 21,496 |
Income (loss) from operations |  | 1,182 | (18) |
Capital expenditures |  | 1,276 | 2,151 |
Depreciation and amortization |  | 1,851 | 1,934 |
Total assets, net |  | 78,861 | 83,839 | $ 83,756
Operating Segments | Base USAP |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 80,746 | 76,325 |
Gross profit |  | 24,532 | 21,415 |
Operating costs | [1] | 22,621 | 20,720 |
Income (loss) from operations |  | 1,911 | 695 |
Capital expenditures |  | 1,005 | 1,966 |
Depreciation and amortization |  | 1,544 | 1,549 |
Total assets, net |  | 73,988 | 76,172 |
Operating Segments | AutoMD |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 60 | 63 |
Gross profit |  | 60 | 63 |
Operating costs | [1] | 789 | 776 |
Income (loss) from operations |  | (729) | (713) |
Capital expenditures |  | 271 | 185 |
Depreciation and amortization |  | 307 | 385 |
Total assets, net |  | $ 4,873 | $ 7,667 |
[1] | Operating costs for AutoMD primarily consist of depreciation and amortization on fixed assets and personnel costs. Indirect costs are not allocated to AutoMD.

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