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Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Non-cash investing and financing activities: |  |
Acquisition of property, plant and equipment in accounts payable and accrued liabilities | $ 11,997 | $ 17,631
Final settlement of prior year stock repurchase forward contract | 0 | 50,000
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from operating leases | 29,503 | 29,854
Right-of-use assets obtained in exchange for lease obligations: |  |
Operating leases | $ 19,996 | $ 25,422

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