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Employee Retirement Plans | 12 Months Ended
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Dec. 31, 2022
Postemployment Benefits [Abstract] |
Employee Retirement Plans | 16. Employee Retirement Plans 401(k) Plans The Company and various subsidiaries maintain 401(k) retirement savings plans which cover eligible employees, including for certain, union steelworkers, and permits participants to contribute to the plans, subject to Internal Revenue Code restrictions and which features matching contributions of various percentages of the first 1% to 5% of employee annual salary contributions, depending on the subsidiary. The Company made aggregate matching contributions of $2.9 million and $2.2 million for the years ended December 31, 2022 and 2021, respectively. Multi-Employer Plans Certain of the Company's Infrastructure segment workforce are subject to collective bargaining agreements. The Company contributes to union-sponsored, multi-employer pension plans. Contributions are made in accordance with negotiated labor contracts. The passage of the Multi-Employer Pension Plan Amendments Act of 1980 (the Act) may, under certain circumstances, cause the Company to become subject to liabilities in excess of contributions made under collective bargaining agreements. Generally, liabilities are contingent upon termination, withdrawal, or partial withdrawal from the plans. Under the Act, liabilities would be based upon the Company's proportionate share of each plan's unfunded vested benefits. The Company made contributions to various multi-employer pension plans totaling $35.0 million and $17.7 million during the years ended December 31, 2022 and 2021, respectively. As of December 31, 2022, most of the Infrastructure segment's collective bargaining agreements are subject to automatic annual or other renewal unless either party elects to terminate the agreement on the scheduled expiration date.

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI https://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI https://asc.fasb.org/topic&trid=2197446 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI https://asc.fasb.org/topic&trid=2127225 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI https://asc.fasb.org/topic&trid=2235017 + Details
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- References No definition available. + Details
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