v3.26.3
Segment Reporting - Schedule of Operating Results by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Revenues $ 952,972 $ 866,286 $ 2,714,814 $ 2,312,583
Research and Development Costs 3,828 3,479 12,094 10,057
Loss (gain) on asset disposals and impairments, net 0 1 123 (4,417)
Total operating income 132,077 113,349 352,907 312,403
Other Income (Expense) (177) (5,781) (94) (15,259)
Income before Provision for Income Taxes 131,900 107,568 352,813 297,144
Equity in Income of Investees: 25,983 21,216 71,976 56,349
Total Capital Expenditures 52,264 48,267 136,200 114,365
Total Depreciation and Amortization 33,514 28,458 93,888 79,629
Government Operations        
Segment Reporting [Line Items]        
Total Segment Expenses 540,609 539,456 1,557,289 1,511,488
Commercial Operations        
Segment Reporting [Line Items]        
Total Segment Expenses 289,766 228,097 831,248 519,387
Operating Segments        
Segment Reporting [Line Items]        
Revenues 953,278 867,668 2,718,626 2,316,363
Total Segment Expenses 830,375 767,553 2,388,537 2,030,875
Total operating income 148,887 121,330 402,067 341,837
Total Capital Expenditures 48,468 47,071 129,407 111,251
Total Depreciation and Amortization 31,678 26,627 88,534 74,207
Operating Segments | Government Operations        
Segment Reporting [Line Items]        
Revenues 639,076 616,697 1,818,266 1,760,943
Research and Development Costs 2,967 2,079 8,935 5,454
Loss (gain) on asset disposals and impairments, net 0 0 (3) (4,431)
Other segment expenses 537,642 537,377 1,548,357 1,510,465
Total operating income 122,597 97,371 327,416 304,536
Equity in Income of Investees: 24,129 20,131 66,437 55,081
Total Capital Expenditures 21,563 25,703 64,206 59,973
Total Depreciation and Amortization 20,529 18,762 59,818 56,080
Operating Segments | Commercial Operations        
Segment Reporting [Line Items]        
Revenues 314,202 250,971 900,360 555,420
Research and Development Costs 861 1,400 3,160 4,603
Loss (gain) on asset disposals and impairments, net 0 1 126 14
Other segment expenses 288,905 226,696 827,962 514,770
Total operating income 26,290 23,959 74,651 37,301
Equity in Income of Investees: 1,854 1,085 5,539 1,268
Total Capital Expenditures 26,905 21,368 65,201 51,278
Total Depreciation and Amortization 11,149 7,865 28,716 18,127
Eliminations        
Segment Reporting [Line Items]        
Revenues (306) (1,382) (3,812) (3,780)
Unallocated Corporate        
Segment Reporting [Line Items]        
Total operating income (16,810) (7,981) (49,160) (29,434)
Total Capital Expenditures 3,796 1,196 6,793 3,114
Total Depreciation and Amortization $ 1,836 $ 1,831 $ 5,354 $ 5,422