Commitments and Contingencies (Details) ft² in Thousands	1 Months Ended	3 Months Ended			6 Months Ended		12 Months Ended	36 Months Ended
	Jan. 31, 2023 USD ($)	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($)	Jul. 02, 2022 USD ($)	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($)	Dec. 31, 2023 USD ($)	Jul. 01, 2023 USD ($)	Jan. 22, 2023 ft²	Dec. 31, 2021 USD ($)	Jun. 30, 2020 ft² building
Loss Contingencies [Line Items]
Estimated litigation liability				$ 900,000						$ 800,000
Payment for legal settlement							$ 300,000
Total net revenues		$ 197,000,000	$ 187,320,000		$ 387,847,000	$ 368,511,000
Cost of sales		$ 145,761,000	147,198,000		$ 289,665,000	291,622,000
Loss contingency, receivable, proceeds			300,000
Gain contingencies related to loss on operating assets			3,900,000
Loss contingency, property and equipment write off			200,000
Loss contingency, deductions from proceeds			100,000
Lease term		10 years			10 years
County of San Bernardino
Loss Contingencies [Line Items]
Payment for legal settlement	$ 900,000
Operating lease, lease not yet commenced
Loss Contingencies [Line Items]
Unrecorded unconditional purchase obligation, including lease not yet commenced		$ 5,800,000			$ 5,800,000
Accrued liabilities
Loss Contingencies [Line Items]
Estimated litigation liability				900,000						$ 800,000
Additional accrued liabilities		0		$ 100,000
Structural Systems
Loss Contingencies [Line Items]
Total net revenues		95,560,000	80,196,000		178,868,000	$ 155,761,000
El Mirage and Monrovia, California | Structural Systems
Loss Contingencies [Line Items]
Reserve for estimated liability		1,500,000			1,500,000		1,500,000
West Covina, California | Structural Systems
Loss Contingencies [Line Items]
Reserve for estimated liability		400,000			400,000		$ 400,000
West Covina, California | Structural Systems | Minimum
Loss Contingencies [Line Items]
Possible loss		400,000			400,000
West Covina, California | Structural Systems | Maximum
Loss Contingencies [Line Items]
Possible loss		$ 3,100,000			$ 3,100,000
Facility fire in Guaymas, Mexico
Loss Contingencies [Line Items]
Real estate property (in sqft) | ft²									117
Loss contingency, receivable, proceeds			$ 3,800,000
Aggregate loss proceeds								$ 23,700,000
Facility fire in Guaymas, Mexico | Damage from facility fire
Loss Contingencies [Line Items]
Number of buildings | building											2
Real estate property (in sqft) | ft²											62
Facility fire in Guaymas, Mexico | Business interruption
Loss Contingencies [Line Items]
Aggregate loss proceeds								7,500,000
Facility fire in Guaymas, Mexico | Property, equipment, inventories and tooling
Loss Contingencies [Line Items]
Aggregate loss proceeds								$ 16,200,000