Segment Information - Summarized Segment Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Oct. 03, 2015 |
Sep. 27, 2014 |
Oct. 03, 2015 |
Sep. 27, 2014 |
Jan. 03, 2015 |
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| Segment Reporting Information [Line Items] | ||||||||
| Net sales | $ 70,648 | $ 67,965 | $ 223,498 | $ 212,940 | ||||
| Gross profit | 21,042 | 18,414 | 63,388 | 59,535 | ||||
| Operating costs | [1] | 21,264 | 20,630 | 64,735 | 63,195 | |||
| Loss from operations | (222) | (2,216) | (1,347) | (3,660) | ||||
| Capital expenditures | 1,968 | 1,256 | 5,800 | 4,292 | ||||
| Depreciation and amortization | 1,862 | 2,213 | 5,618 | 6,833 | ||||
| Total assets, net | 80,261 | 73,684 | 80,261 | 73,684 | $ 82,907 | |||
| Operating Segments | Base USAP | ||||||||
| Segment Reporting Information [Line Items] | ||||||||
| Net sales | 70,573 | 67,885 | 223,309 | 212,717 | ||||
| Gross profit | 20,967 | 18,334 | 63,199 | 59,312 | ||||
| Operating costs | [1] | 20,367 | 20,016 | 62,322 | 61,396 | |||
| Loss from operations | 600 | (1,682) | 877 | (2,084) | ||||
| Capital expenditures | 1,636 | 887 | 4,974 | 3,231 | ||||
| Depreciation and amortization | 1,539 | 1,803 | 4,571 | 5,554 | ||||
| Total assets, net | 73,946 | 71,856 | 73,946 | 71,856 | ||||
| Operating Segments | AutoMD | ||||||||
| Segment Reporting Information [Line Items] | ||||||||
| Net sales | 75 | 80 | 189 | 223 | ||||
| Gross profit | 75 | 80 | 189 | 223 | ||||
| Operating costs | [1] | 897 | 614 | 2,413 | 1,799 | |||
| Loss from operations | (822) | (534) | (2,224) | (1,576) | ||||
| Capital expenditures | 332 | 369 | 826 | 1,061 | ||||
| Depreciation and amortization | 323 | 410 | 1,047 | 1,279 | ||||
| Total assets, net | $ 6,315 | $ 1,828 | $ 6,315 | $ 1,828 | ||||
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