Acquisitions and Dispositions Dispositions (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017	Dec. 13, 2019	Mar. 21, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal of subsidiaries	$ 9,655	$ 0	$ 0	$ 4,605	$ 14,260	$ 0	$ 212
Cumulative translation adjustment					2,368	$ 0	212
Window Widgets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration for the sale of subsidiaries, net of cash disposed					1,200
Loss on disposal of subsidiaries					(9,700)
Write-off of assets sold								$ 8,300
Cumulative translation adjustment					(1,400)
Performance Doorset Solutions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal of subsidiaries					(4,600)
Write-off of assets sold									$ 3,600
Cumulative translation adjustment					$ (1,000)
Hungary
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cumulative translation adjustment							$ 200