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v3.24.0.1

Segment Reporting - Schedule of Operations by Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 725,515 | $ 589,989 | $ 612,445 | $ 568,360 | $ 624,177 | $ 523,711 | $ 554,208 | $ 530,738 | $ 2,496,309 | $ 2,232,834 | $ 2,124,074
Total Operating Income | 123,193 | 85,358 | 86,666 | 87,842 | 101,883 | 79,878 | 95,237 | 71,573 | 383,059 | 348,571 | 345,848
Other Income (Expense) |  |  |  |  |  |  |  |  | (61,659) | (34,194) | 49,865
Income before Provision for Income Taxes |  |  |  |  |  |  |  |  | 321,400 | 314,377 | 395,713
Losses (Gains) on Asset Disposals and Impairments, Net: |  |  |  |  |  |  |  |  | 1,034 | 5,520 | (3,532)
Equity in Income of Investees | 11,945 | $ 12,649 | $ 12,568 | $ 13,645 | 11,092 | $ 14,783 | $ 11,319 | $ 8,779 | 50,807 | 45,973 | 33,498
Total Capital Expenditures |  |  |  |  |  |  |  |  | 151,286 | 198,312 | 311,052
Total Depreciation and Amortization |  |  |  |  |  |  |  |  | 78,566 | 73,842 | 69,080
Total Assets | 2,747,065 |  |  |  | 2,618,939 |  |  |  | 2,747,065 | 2,618,939 | 2,501,380
Total Investment in Unconsolidated Affiliates | 88,608 |  |  |  | 100,198 |  |  |  | 88,608 | 100,198 | 85,284
Reportable Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,497,681 | 2,235,841 | 2,132,179
Total Operating Income |  |  |  |  |  |  |  |  | 412,214 | 363,919 | 364,792
Total Capital Expenditures |  |  |  |  |  |  |  |  | 145,057 | 191,946 | 300,622
Total Depreciation and Amortization |  |  |  |  |  |  |  |  | 71,133 | 66,787 | 62,369
Total Assets | 2,592,892 |  |  |  | 2,504,017 |  |  |  | 2,592,892 | 2,504,017 | 2,407,245
Reportable Segments | Government Operations |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,031,337 | 1,808,483 | 1,725,097
Total Operating Income |  |  |  |  |  |  |  |  | 374,682 | 336,501 | 329,549
Losses (Gains) on Asset Disposals and Impairments, Net: |  |  |  |  |  |  |  |  | 1,043 | (250) | (8)
Equity in Income of Investees |  |  |  |  |  |  |  |  | 50,807 | 45,973 | 33,498
Total Capital Expenditures |  |  |  |  |  |  |  |  | 91,699 | 103,093 | 147,051
Total Depreciation and Amortization |  |  |  |  |  |  |  |  | 53,388 | 47,982 | 42,485
Total Assets | 1,515,264 |  |  |  | 1,498,472 |  |  |  | 1,515,264 | 1,498,472 | 1,430,863
Total Investment in Unconsolidated Affiliates | 88,608 |  |  |  | 100,198 |  |  |  | 88,608 | 100,198 | 85,284
Reportable Segments | Commercial Operations |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 466,344 | 427,358 | 407,082
Total Operating Income |  |  |  |  |  |  |  |  | 37,532 | 27,418 | 35,243
Losses (Gains) on Asset Disposals and Impairments, Net: |  |  |  |  |  |  |  |  | (9) | 6,233 | (2,548)
Equity in Income of Investees |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total Capital Expenditures |  |  |  |  |  |  |  |  | 53,358 | 88,853 | 153,571
Total Depreciation and Amortization |  |  |  |  |  |  |  |  | 17,745 | 18,805 | 19,884
Total Assets | 1,077,628 |  |  |  | 1,005,545 |  |  |  | 1,077,628 | 1,005,545 | 976,382
Total Investment in Unconsolidated Affiliates | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Corporate |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Operating Income |  |  |  |  |  |  |  |  | (29,155) | (15,348) | (18,944)
Losses (Gains) on Asset Disposals and Impairments, Net: |  |  |  |  |  |  |  |  | 0 | (463) | (976)
Total Capital Expenditures |  |  |  |  |  |  |  |  | 6,229 | 6,366 | 10,430
Total Depreciation and Amortization |  |  |  |  |  |  |  |  | 7,433 | 7,055 | 6,711
Total Assets | $ 154,173 |  |  |  | $ 114,922 |  |  |  | 154,173 | 114,922 | 94,135
Eliminations |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ (1,372) | $ (3,007) | $ (8,105)

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