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Acquisitions and Dispositions (Narrative) (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Jan. 16, 2025 | Jun. 28, 2024 | Mar. 31, 2025 | Sep. 12, 2024
Educational Partners International |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Equity method investment, ownership percentage |  |  |  | 68.00%
Equity method investments |  |  |  | $ 167,700
Valor Environmental [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Percentage acquired |  | 98.00% |  |
Total purchase consideration |  | $ 156,400 |  |
Cash consideration |  | $ 156,400 |  |
Goodwill, Acquired During Period |  |  | $ 73,400 |
Expected tax deductible goodwill |  |  | 0 |
Finite-lived intangible assets |  |  | 92,500 |
Finite-Lived Intangible Assets, Period Increase (Decrease) |  |  | 43,500 |
Goodwill, Period Increase (Decrease) |  |  | (34,200) |
Valor Environmental [Member] | Customer Relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-lived intangible assets |  |  | $ 82,000 |
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 17 years |
Valor Environmental [Member] | Trade Names |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-lived intangible assets |  |  | $ 6,000 |
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 15 years |
Valor Environmental [Member] | Other Intangible Assets |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-lived intangible assets |  |  | $ 4,500 |
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 5 years |
Educational Partners International |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill, Acquired During Period | $ 70,300 |  |  |
Finite-lived intangible assets | 177,000 |  |  |
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value | $ 81,200 |  |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 + Details
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