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Acquisitions - Additional Information (Details) - USD ($) $ in Thousands |  |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 | Jan. 31, 2025 | Nov. 01, 2024 | Aug. 16, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Amortization of intangible assets |  |  |  |  | $ 17,100 | $ 13,800 | $ 33,400 | $ 27,500 |
Revenues |  |  |  |  | 1,584,323 | 1,670,467 | 3,138,683 | 3,206,143 |
Goodwill | $ 2,161,939 |  |  |  | $ 2,161,939 |  | $ 2,161,939 |  | $ 2,082,680
Paid in 18 months |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash paid to acquire |  | $ 3,800 |  |  |  |  |  |  |
Chesapeake Technology International, Corp |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Percentage of ownership interest acquired | 100.00% |  |  |  | 100.00% |  | 100.00% |  |
Cash paid to acquire | $ 89,200 |  |  |  |  |  |  |  |
Goodwill | 55,330 |  |  |  | $ 55,330 |  | $ 55,330 |  |
Goodwill deductible for tax purposes | $ 8,500 |  |  |  | 8,500 |  | 8,500 |  |
Chesapeake Technology International, Corp | Selling, General and Administrative Expense |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Acquisition related expenses |  |  |  |  | 2,200 |  | 2,200 |  |
TRS group Inc |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Percentage of ownership interest acquired |  | 100.00% |  |  |  |  |  |  |
Cash paid to acquire |  | $ 36,600 |  |  |  |  |  |  |
Amortization of intangible assets |  |  |  |  | 400 |  | 700 |  |
Revenues |  |  |  |  | 7,400 |  | 11,500 |  |
Goodwill |  | $ 22,972 |  |  |  |  |  |  |
TRS group Inc | Selling, General and Administrative Expense |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Acquisition related expenses |  |  |  |  | 400 |  | 500 |  |
BCC Engineering, LLC |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Percentage of ownership interest acquired |  |  | 100.00% |  |  |  |  |  |
Cash paid to acquire |  |  | $ 233,500 |  |  |  |  |  |
Amortization of intangible assets |  |  |  |  | 2,200 |  | 4,400 |  |
Revenues |  |  |  |  | 34,500 |  | 63,400 |  |
Goodwill |  |  | $ 175,680 |  |  |  |  |  |
Goodwill deductible for tax purposes |  |  |  |  |  | $ 45,800 |  | $ 45,800 |
BCC Engineering, LLC | Selling, General and Administrative Expense |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Acquisition related expenses |  |  |  |  |  |  |  |  | 4,200
BlackSignal Technologies, LLC. |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Percentage of ownership interest acquired |  |  |  | 100.00% |  |  |  |  |
Cash paid to acquire |  |  |  | $ 203,700 |  |  |  |  |
Amortization of intangible assets |  |  |  |  | 3,200 |  | 6,400 |  |
Revenues |  |  |  |  | $ 16,700 |  | $ 29,800 |  |
Goodwill |  |  |  | 116,849 |  |  |  |  |
Goodwill deductible for tax purposes |  |  |  | $ 17,100 |  |  |  |  |
BlackSignal Technologies, LLC. | Selling, General and Administrative Expense |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Acquisition related expenses |  |  |  |  |  |  |  |  | $ 2,500

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