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Stock Based Compensation (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Stock-based compensation | $ 45,643 | $ 44,906 | $ 37,897
Income tax benefit | (14,389) | (13,060) | (8,360)
Total stock-based compensation expense after income taxes | 31,254 | 31,846 | 29,537
Cost Of Revenues |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Stock-based compensation | 4,196 | 4,227 | 3,480
Engineering And Development |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Stock-based compensation | 9,783 | 12,039 | 9,913
Selling and Administrative |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Stock-based compensation | $ 31,664 | $ 28,640 | $ 24,504

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