Restructuring and Impairment Charges - (Changes in Restructuring Accruals) (Details) - Realignment of Office Furniture Facilities and Exit of Business Line $ in Thousands	6 Months Ended
Jun. 29, 2019 USD ($)
Restructuring Reserve [Roll Forward]
Restructuring allowance as of December 29, 2018	$ 286
Restructuring charges	930
Cash payments	(387)
Restructuring allowance as of June 29, 2019	829
Severance Costs
Restructuring Reserve [Roll Forward]
Restructuring allowance as of December 29, 2018	136
Restructuring charges	884
Cash payments	(313)
Restructuring allowance as of June 29, 2019	707
Facility Exit Costs & Other
Restructuring Reserve [Roll Forward]
Restructuring allowance as of December 29, 2018	150
Restructuring charges	46
Cash payments	(74)
Restructuring allowance as of June 29, 2019	$ 122

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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