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Overview and Summary of Significant Accounting Policies - Unsatisfied Performance Obligation (Details) $ in Millions | Mar. 31, 2023 USD ($)
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Engineered Structures | Utility, wind, and related structures |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Unsatisfied performance obligations, Amount | $ 1,531.4
Revenue, remaining performance obligation expected to be delivered in current year | 29.00%
Revenue Remaining Performance Obligation Percentage Year 2 | 22.00%
Transportation Products | Inland barges |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Unsatisfied performance obligations, Amount | $ 279.0
Revenue, remaining performance obligation expected to be delivered in current year | 68.00%

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