Employee Stock Based Compensation - Summary of the Status of Stock Options (Detail) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Jan. 02, 2016 |
Jan. 03, 2015 |
|
| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |||
| Number of Shares, Outstanding Beginning balance | 3,170,314 | ||
| Number of Shares, Exercised | (537,364) | (1,033,750) | (906,573) |
| Number of Shares, Forfeited/Expired | (8,000) | ||
| Number of Shares, Outstanding Ending balance | 2,624,950 | 3,170,314 | |
| Number of Shares, Exercisable Balance | 2,606,950 | ||
| Weighted Average Exercise Price | $ 2.08 | $ 2.04 | |
| Exercised | 1.82 | ||
| Forfeited/Expired | 3.25 | ||
| Weighted Average Exercise Price | 2.08 | $ 2.04 | |
| Exercisable at December 31, 2016 | $ 2.03 | ||
| Weighted Average Remaining Life, Outstanding Balance | 3 years 4 months 24 days | ||
| Weighted Average Remaining Life, Exercisable Balance | 3 years 4 months 24 days | ||