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Acquisitions - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed on Preliminary Purchase Price Allocation (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Jan. 31, 2025 | Dec. 31, 2024 | Nov. 01, 2024 | Aug. 16, 2024
--- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |
Contract assets | $ 836,366 |  | $ 741,504 |  |
Goodwill | 2,161,939 |  | 2,082,680 |  |
Contract liabilities | (320,295) |  | $ (289,799) |  |
Chesapeake Technology International, Corp |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash and cash equivalents | 2,877 |  |  |  |
Accounts receivable | 28,315 |  |  |  |
Contract assets | 3,011 |  |  |  |
Inventory | 144 |  |  |  |
Income taxes receivable | 265 |  |  |  |
Right of use assets, operating leases | 484 |  |  |  |
Prepaid expenses and other current assets | 3,732 |  |  |  |
Property and equipment | 929 |  |  |  |
Goodwill | 55,330 |  |  |  |
Intangible assets | 38,700 |  |  |  |
Accounts payable | (17,380) |  |  |  |
Short-term lease liabilities, operating leases | (389) |  |  |  |
Accrued expenses and other current liabilities | (10,701) |  |  |  |
Contract liabilities | (8,523) |  |  |  |
Deferred income taxes | (7,457) |  |  |  |
Long-term lease liabilities, operating leases | (132) |  |  |  |
Net assets acquired | $ 89,205 |  |  |  |
TRS group Inc |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash and cash equivalents |  | $ 2,054 |  |  |
Accounts receivable |  | 3,390 |  |  |
Contract assets |  | 2,277 |  |  |
Income taxes receivable |  | 354 |  |  |
Prepaid expenses and other current assets |  | 2,414 |  |  |
Property and equipment |  | 5,832 |  |  |
Goodwill |  | 22,972 |  |  |
Intangible assets |  | 6,100 |  |  |
Accounts payable |  | (1,095) |  |  |
Short-term lease liabilities, operating leases |  | (116) |  |  |
Accrued expenses and other current liabilities |  | (3,270) |  |  |
Contract liabilities |  | (4,222) |  |  |
Long-term lease liabilities, operating leases |  | (124) |  |  |
Net assets acquired |  | $ 36,566 |  |  |
BCC Engineering, LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash and cash equivalents |  |  |  | $ 2,839 |
Accounts receivable |  |  |  | 24,142 |
Contract assets |  |  |  | 16,649 |
Right of use assets, operating leases |  |  |  | 9,438 |
Prepaid expenses and other current assets |  |  |  | 2,483 |
Property and equipment |  |  |  | 1,586 |
Other noncurrent assets |  |  |  | 1,744 |
Goodwill |  |  |  | 175,680 |
Intangible assets |  |  |  | 32,400 |
Accounts payable |  |  |  | (8,668) |
Short-term lease liabilities, operating leases |  |  |  | (2,090) |
Accrued expenses and other current liabilities |  |  |  | (7,296) |
Contract liabilities |  |  |  | (4,446) |
Deferred income taxes |  |  |  | (2,299) |
Long-term lease liabilities, operating leases |  |  |  | (7,462) |
Other long-term liabilities |  |  |  | (1,183) |
Net assets acquired |  |  |  | $ 233,517 |
BlackSignal Technologies, LLC. |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash and cash equivalents |  |  |  |  | $ 4,917
Accounts receivable |  |  |  |  | 5,171
Contract assets |  |  |  |  | 3,209
Right of use assets, operating leases |  |  |  |  | 5,370
Prepaid expenses and other current assets |  |  |  |  | 447
Property and equipment |  |  |  |  | 997
Goodwill |  |  |  |  | 116,849
Intangible assets |  |  |  |  | 97,600
Other assets |  |  |  |  | 145
Accounts payable |  |  |  |  | (951)
Short-term lease liabilities, operating leases |  |  |  |  | (800)
Accrued expenses and other current liabilities |  |  |  |  | (4,999)
Deferred income taxes |  |  |  |  | (19,647)
Long-term lease liabilities, operating leases |  |  |  |  | (4,570)
Net assets acquired |  |  |  |  | $ 203,738

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