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Retirement Plans (Narrative) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) Item | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Defined Contribution Plan Disclosure [Line Items] |  |  |
Number of sponsored 401(k) plans | Item | 2 |  |
Expense for matching and discretionary contributions | $ 4,757 | $ 2,996 | $ 4,659
Contributes to various multiemployer pension plans | $ 5,153 | $ 4,915 | $ 4,632
Maximum [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Multiemployer plans collective-bargaining arrangement percentage of contributions | 5.00% |  |

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
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- Definition Percentage of employer contribution required by collective-bargaining arrangement (CBA) to total contribution from all participating employers in multiemployer pension plan determined to be individually significant. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480576/715-80-50-5 + Details
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