Segment Information (Consolidated Net Sales And Long Lived Assets) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 27, 2020 |
Jun. 29, 2019 |
Jun. 27, 2020 |
Jun. 29, 2019 |
Dec. 28, 2019 |
|
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||
| Net sales | $ 258,991 | $ 256,016 | $ 525,610 | $ 529,006 | |
| China [Member] | |||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||
| Net sales | 110,525 | $ 112,775 | 226,003 | $ 240,147 | |
| Long-lived assets | 87,845 | 87,845 | $ 90,886 | ||
| United States [Member] | |||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||
| Long-lived assets | $ 60,912 | $ 60,912 | $ 54,809 | ||
| X | ||||||||||
- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|