Intangible Assets (Schedule Of Goodwill) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 30, 2017 |
Dec. 31, 2016 |
Jan. 02, 2016 |
|
| Intangible Assets [Abstract] | |||
| Gross goodwill, Balance at beginning of year | $ 16,715 | $ 17,432 | |
| Accumulated impairment losses, Balance at beginning of year | |||
| Net goodwill as of beginning of year | 16,715 | 17,432 | |
| Goodwill acquired during the year | |||
| Impairment loss | 0 | 0 | $ 0 |
| Currency translation adjustments | 702 | (717) | |
| Gross goodwill, Balance as of end of year | 17,417 | 16,715 | 17,432 |
| Accumulated impairment losses, Balance as of end of year | |||
| Net goodwill, Balance as of end of year | $ 17,417 | $ 16,715 | $ 17,432 |
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|