Segment Information - Reconciliation of Segment AOI (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 04, 2021	Jul. 05, 2020	Apr. 05, 2020	Jul. 04, 2021	Jul. 05, 2020
Segment Reporting, Reconciling Item for Operating Income (Loss) from Segment to Consolidated [Line Items]
Operating Income (Loss)	$ 29,224	$ 17,393		$ 46,090	$ (76,119)
Amortization of acquired intangible assets				2,862	2,631
Goodwill and Intangible Asset Impairment	0	0	$ 121,300	0	121,258
Interest Expense	7,289	4,965		14,545	10,595
Other Expense	617	5,139		1,332	6,630
Income (Loss) from Continuing Operations before Income Tax Expense	21,318	7,289		30,213	(93,344)
Operating Segments | AMS
Segment Reporting, Reconciling Item for Operating Income (Loss) from Segment to Consolidated [Line Items]
Operating Income (Loss)	21,101	17,189		32,748	37,287
Amortization of acquired intangible assets	0	0		0	0
Goodwill and Intangible Asset Impairment				0	2,695
Impact of change in equity award forfeiture accounting				0	757
Restructuring, asset impairment, severance and other charges	(3)	6,753		263	6,753
AOI	21,098	23,942		33,011	47,492
Operating Segments | EAAA
Segment Reporting, Reconciling Item for Operating Income (Loss) from Segment to Consolidated [Line Items]
Operating Income (Loss)	8,123	204		13,342	(113,406)
Amortization of acquired intangible assets	1,441	1,316		2,862	2,631
Goodwill and Intangible Asset Impairment				0	118,563
Impact of change in equity award forfeiture accounting				0	650
Restructuring, asset impairment, severance and other charges	396	2,010		1,767	892
AOI	$ 9,960	$ 3,530		$ 17,971	$ 9,330