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Income Taxes - Reconciliation of Company's Effective Tax Rate to U.S. Federal Statutory Rate (Detail)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
U.S. Federal income tax statutory rate 35.00% 35.00% 35.00%
Federal tax credits (1.80%)    (0.70%)
State income taxes, net of federal benefit 1.30% 1.30% 1.10%
Effect of foreign operations taxed at various rates 0.30% (2.60%) (4.10%)
Qualified production activity tax benefit (1.40%) (0.50%) (1.10%)
Deferred tax asset valuation allowance (0.70%) 1.40% 0.60%
Income tax charges on accumulated foreign earnings 10.90%      
Tax benefit related to reinstatement of tax incentives (4.00%)      
Other 0.10% 1.50% (0.50%)
Total 39.70% 36.10% 30.30%