Commitments and Contingencies (Details) $ / shares in Units, $ in Thousands	1 Months Ended							3 Months Ended		12 Months Ended					36 Months Ended
	Jul. 24, 2024 USD ($)	Aug. 31, 2023	Mar. 31, 2022 potentially_responsible_party	Feb. 28, 2022 USD ($) smelter_site ft	Jan. 31, 2018 USD ($) potentially_responsible_party unilateralAdministrativeOrder	Nov. 27, 2015 USD ($)	Aug. 31, 2015 mining_site	Jun. 28, 2025 USD ($) $ / shares	Jul. 01, 2023 USD ($)	Dec. 27, 2025 USD ($) property smelter_site potentially_responsible_party	Dec. 28, 2024 USD ($)	Dec. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 31, 2008 import_entry	Dec. 27, 2025 USD ($) property potentially_responsible_party smelter_site	Dec. 25, 2021 USD ($)	Dec. 29, 2018 potentially_responsible_party	Nov. 08, 2016 USD ($)	Apr. 19, 2010
Loss Contingencies [Line Items]
Environmental expense										$ 2,000	$ 1,800	$ 700
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]										Environmental reserves, Other current liabilities					Environmental reserves, Other current liabilities
Environmental reserves										$ 18,900	$ 18,400				$ 18,900
Expected environmental expenditures for 2025										3,200					3,200
Expected environmental expenditures for 2026										1,100					1,100
Expected environmental expenditures for 2027										900					900
Expected environmental expenditures for 2028										1,000					1,000
Expected environmental expenditures for 2029										900					900
Expected environmental expenditures after 2029										11,800					11,800
Proceeds from Insurance Settlement, Gross								$ 29,500
Insurance deductible								$ 250
Insured event, gain (loss), pretax									$ 19,500	41,100
Insured event, gain per diluted share, after tax (in USD per share) | $ / shares								$ 0.13
Proceeds from insurance settlement										20,000		$ 24,500	$ 5,000
Insurance advances, net										$ 55,000
Letter of Credit
Loss Contingencies [Line Items]
Term of guarantees										1 year
Letter of Credit | Revolving Credit Facility
Loss Contingencies [Line Items]
Payments required to be made under guarantees, maximum										$ 27,400					$ 27,400
United States Department of Commerce Antidumping Review
Loss Contingencies [Line Items]
Assignment of antidumping duty rate on U.S. imports by Company subsidiaries (as a percent)																			48.33%
Payment for interest and duties						$ 3,000
Number of import entries | import_entry														795
East La Harpe
Loss Contingencies [Line Items]
Number of parties involved in settlement negotiations | smelter_site										3					3
Southeast Kansas Sites
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies, gross				$ 5,600
Geographic boundary of sites | ft				50
Southeast Kansas Sites | Non operating Properties
Loss Contingencies [Line Items]
Number of parties involved in settlement negotiations | smelter_site				3
Southeast Kansas Sites - East La Harpe | Non operating Properties
Loss Contingencies [Line Items]
Number of parties involved in settlement negotiations | potentially_responsible_party										2					2		2
Southeast Kansas Sites - Lanyon | Operating Properties
Loss Contingencies [Line Items]
Number of properties in remediation | property										1,371					1,371
EPA review, term		5 years
Number of surrounding properties | property										300
Shasta Area Mine Sites
Loss Contingencies [Line Items]
Period of permit, implementation of Best Management Practices										10 years
Environmental remediation expense spending															$ 1,300
Estimated remediation costs, term										30 years
Shasta Area Mine Sites | Minimum
Loss Contingencies [Line Items]
Estimated remediation costs										$ 13,700
Shasta Area Mine Sites | Maximum
Loss Contingencies [Line Items]
Estimated remediation costs										$ 14,800
Lead Refinery Site
Loss Contingencies [Line Items]
Environmental expense															$ 700
Number of surrounding properties | property										300
Amount other PRPs will pay to fund cleanup										$ 26,000
Financial guarantee																		$ 1,000
Lead Refinery Site | Minimum
Loss Contingencies [Line Items]
Estimated remediation costs										1,900
Lead Refinery Site | Maximum
Loss Contingencies [Line Items]
Estimated remediation costs										$ 2,000
Lead Refinery Site | Non operating Properties
Loss Contingencies [Line Items]
Number of parties involved in settlement negotiations | potentially_responsible_party										2					2
Estimated remediation costs, term										11 years
Lead Refinery NPL Site
Loss Contingencies [Line Items]
Environmental reserves					$ 4,500
Number of UAOs | unilateralAdministrativeOrder					2
Number of PRPs | potentially_responsible_party			4		4
Site contingency, total costs					$ 25,000
Site contingency, amount agreed upon to pay PRPs for past costs					2,000
Site contingency, additional reimbursement of past costs					$ 700
Contingency charge										$ 7,600
Reserve for settlement																$ 3,300
Litigation settlement	$ 100
Bonita Peak Mining District
Loss Contingencies [Line Items]
Number of mining sites | mining_site							48
Mueller Copper Tube Products, Inc. | Operating Properties
Loss Contingencies [Line Items]
Estimated remediation costs, term										5 years
Mueller Copper Tube Products, Inc. | Operating Properties | Minimum
Loss Contingencies [Line Items]
Estimated remediation costs										$ 900
Mueller Copper Tube Products, Inc. | Operating Properties | Maximum
Loss Contingencies [Line Items]
Estimated remediation costs										$ 1,100