Schedule II - Valuation and Qualifying Accounts (Detail) - Allowance for Doubtful Accounts [Member] - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Jan. 02, 2016 |
Jan. 03, 2015 |
|
| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance at Beginning of Period | $ 336 | $ 306 | $ 513 |
| Added in Acquisition | 159 | 85 | |
| Costs and expenses | 67 | 43 | (216) |
| Deductions | (163) | (13) | (76) |
| Balance at End of Period | $ 399 | $ 336 | $ 306 |