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.

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Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Restructuring and Other Charges (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 8,621	$ 11,089	$ 9,406
Restructuring reserve	9,638	$ 12,024	$ 13,784	$ 24,460
2019 restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	9,900
Restructuring reserve	9,100
Prior Restructuring Plans [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	(1,300)
Restructuring reserve	$ 500