Restructuring and other Exit Charges - (Additional Information) (Details)		1 Months Ended	3 Months Ended		6 Months Ended			9 Months Ended
	Jun. 29, 2022 USD ($) Employee	Nov. 30, 2022 USD ($)	Dec. 31, 2023 USD ($)	Jan. 01, 2023 USD ($)	Oct. 01, 2023 USD ($) Employee	Oct. 02, 2022 USD ($)	Oct. 03, 2021 USD ($)	Dec. 31, 2023 USD ($)	Jan. 01, 2023 USD ($)	Nov. 08, 2023 USD ($)	Jul. 02, 2023 USD ($)
Restructuring Cost and Reserve [Line Items]
Expected remaining cost			$ 344,000					$ 344,000
Inventory adjustment relating to exit activities			16,067,000	$ (863,000)				19,165,000	$ 681,000
Write-off of assets relating to exit activities								21,506,000	8,360,000
Restructuring and other exit charges			6,070,000	801,000				19,613,000	12,394,000
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges			918,000					4,513,000
Restructuring costs incurred								2,071,000
Restructuring and other exit charges			6,070,000					19,613,000
Exit charges			5,152,000					15,100,000
Employee Severance | Energy Systems
Restructuring Cost and Reserve [Line Items]
Restructuring charges			(7,000)					2,707,000
Restructuring and other exit charges			2,357,000					5,071,000
Exit charges			2,364,000					2,364,000
Employee Severance | Motive Power
Restructuring Cost and Reserve [Line Items]
Restructuring charges			925,000					1,772,000
Restructuring and other exit charges			2,910,000					7,948,000
Exit charges			1,985,000					6,176,000
Employee Severance | Specialty
Restructuring Cost and Reserve [Line Items]
Restructuring charges			0					34,000
Restructuring and other exit charges			803,000					6,594,000
Exit charges			803,000					6,560,000
Closure of Facility in Hagen, Germany
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges											$ 60,000,000
Estimated number of positions eliminated | Employee					200
Inventory adjustment relating to exit activities						$ 960,000
Closure of Facility in Hagen, Germany | Cash charges
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges											40,000,000
Closure of Facility in Hagen, Germany | Severance, Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges							$ 23,331,000
Closure of Facility in Hagen, Germany | Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges											$ 20,000,000
Closure of Facility in Hagen, Germany | Severance, Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges						3,522,000	$ 7,946,000
Closure of Facility in Hagen, Germany | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges						$ 8,069,000
Closure of Facility in Hagen, Germany | Site Clean Up, Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1,690,000		$ 2,207,000
Closure of Facility in Hagen, Germany | Accelerated Depreciation, Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges			407,000		562,000
Closure Of Facility In Ooltewah, Tennessee
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges	$ 18,500,000
Estimated number of positions eliminated | Employee	165
Closure Of Facility In Ooltewah, Tennessee | Cash charges
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges	$ 9,200,000		3,505,000	2,735,000				3,505,000	2,735,000
Closure Of Facility In Ooltewah, Tennessee | Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges	$ 9,300,000			7,261,000					7,261,000
Closure Of Facility In Ooltewah, Tennessee | Non Cash Charges | Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges				$ 1,613,000					$ 1,613,000
Closure of Facility in Sylmar, California
Restructuring Cost and Reserve [Line Items]
Write-off of assets relating to exit activities		$ 7,865,000
Exit charges		11,758,000
Closure of Facility in Sylmar, California | Severance, Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges			6,183,000		1,682,000
Closure of Facility in Sylmar, California | Non Cash Charges | Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges			3,098,000					3,098,000
Closure of Facility in Sylmar, California | Fixed Asset Write Off, Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 3,893,000
Closure of Facility in Sylmar, California | Contract Assets, Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 377,000		$ 417,000
Closure Of Facility In Spokane, Washington
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges										$ 3,600,000
Closure Of Facility In Spokane, Washington | Employee Severance
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges										700,000
Write-off of assets relating to exit activities								585,000
Closure Of Facility In Spokane, Washington | Fixed Asset Write Off, Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges										2,900,000
Write-off of assets relating to exit activities								481,000
OutBack And Mojave Brands
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges										23,500
OutBack And Mojave Brands | Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges										22,600,000
Write-off of assets relating to exit activities								6,572
OutBack And Mojave Brands | Employee Severance
Restructuring Cost and Reserve [Line Items]
Expected additional restructuring charges										$ 900
Write-off of assets relating to exit activities								438
OutBack And Mojave Brands | Inventories, Non Cash Charges
Restructuring Cost and Reserve [Line Items]
Write-off of assets relating to exit activities								$ 16,067