Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
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| Income Statement [Abstract] | ||||
| Revenues | $ 956,167 | $ 926,019 | $ 2,798,111 | $ 2,803,728 |
| Operating expenses | ||||
| Direct cost of revenues | 638,233 | 628,079 | 1,888,302 | 1,891,862 |
| Selling, general and administrative expenses | 199,484 | 205,995 | 586,023 | 614,100 |
| Special charges | 0 | 0 | 25,295 | 0 |
| Amortization of intangible assets | 780 | 1,053 | 2,850 | 3,149 |
| Costs and expenses | 838,497 | 835,127 | 2,502,470 | 2,509,111 |
| Operating income | 117,670 | 90,892 | 295,641 | 294,617 |
| Other income (expense) | ||||
| Interest income and other | 1,692 | (909) | 2,466 | 2,581 |
| Interest expense | (7,634) | (1,197) | (13,859) | (6,235) |
| Other income (expense) | (5,942) | (2,106) | (11,393) | (3,654) |
| Income before income tax provision | 111,728 | 88,786 | 284,248 | 290,963 |
| Income tax provision | 28,910 | 22,320 | 67,908 | 60,585 |
| Net income | $ 82,818 | $ 66,466 | $ 216,340 | $ 230,378 |
| Earnings per common share — basic (in dollars per share) | $ 2.63 | $ 1.88 | $ 6.50 | $ 6.55 |
| Earnings per common share — diluted (in dollars per share) | $ 2.60 | $ 1.85 | $ 6.43 | $ 6.43 |
| Other comprehensive income (loss), net of tax | ||||
| Foreign currency translation adjustments, net of tax expense of $0 | $ (4,916) | $ 28,752 | $ 43,431 | $ 15,601 |
| Total other comprehensive income (loss), net of tax | (4,916) | 28,752 | 43,431 | 15,601 |
| Comprehensive income | $ 77,902 | $ 95,218 | $ 259,771 | $ 245,979 |
| X | ||||||||||
- Definition Interest and Other Income (Expense), Net No definition available.
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| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate cost of goods produced and sold and services rendered during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of interest expense classified as nonoperating. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- References No definition available.
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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