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Schedule of Effective Income Tax Rate Reconciliation (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Income tax expense at federal statutory rate | 21.00% | 21.00% | 35.00%
State taxes, net of federal tax effect | (1.70%) | (1.30%) | 2.50%
Foreign earnings taxed at different rates | (6.10%) | (20.50%) | (24.20%)
Book tax difference in amortization of intangible property | (4.60%) | (0.00%) | (0.00%)
Withholding tax | 3.10% | 5.50% | 1.90%
Foreign tax credit | (3.00%) | (5.20%) | (1.10%)
Other international components | 0.20% | 0.30% | 0.00%
Change in valuation allowance | 1.60% | 2.50% | 0.20%
Deferred tax adjustments and rate changes | 1.00% | (1.70%) | 4.00%
Meals and entertainment | 1.30% | 2.60% | 0.70%
Non-deductible officers compensation | 1.40% | 2.10% | 0.00%
Section 199 deduction | (0.00%) | (0.00%) | (1.40%)
Subpart F income | 3.20% | 7.00% | 1.50%
Research and development tax credit | (9.30%) | (11.80%) | (1.10%)
Stock compensation | 1.80% | 5.80% | 0.60%
GILTI, net of foreign tax credit | 0.90% | 0.50% | 0.00%
FDII | (1.90%) | (4.50%) | (0.00%)
Transition Tax | 0.00% | (15.20%) | 55.40%
Other permanent differences | 1.30% | 3.00% | 0.50%
Total | 10.20% | (9.90%) | 74.50%

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