Property and Equipment, Net (Schedule Of Property And equipment) (Details) - USD ($) $ in Thousands |
Dec. 30, 2016 |
Jan. 01, 2016 |
|---|---|---|
| Property Plant And Equipment [Line Items] | ||
| Property and equipment, gross | $ 34,429 | $ 31,434 |
| Less accumulated depreciation | (19,655) | (17,332) |
| Property, Plant and Equipment, Net, Total | 14,774 | 14,102 |
| Equipment [Member] | ||
| Property Plant And Equipment [Line Items] | ||
| Property and equipment, gross | 6,580 | 6,460 |
| Software [Member] | ||
| Property Plant And Equipment [Line Items] | ||
| Property and equipment, gross | 26,983 | 24,049 |
| Leasehold Improvements [Member] | ||
| Property Plant And Equipment [Line Items] | ||
| Property and equipment, gross | 373 | 431 |
| Furniture And Fixtures [Member] | ||
| Property Plant And Equipment [Line Items] | ||
| Property and equipment, gross | $ 493 | $ 494 |