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Income Taxes - Difference Between the Effective Tax Rate and the U.S. Federal Statutory Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense at the U.S. federal tax rate	35.00%	35.00%	35.00%
Foreign income tax differential	(18.00%)	(13.20%)	14.00%
State and local income taxes	(11.00%)	0.20%	0.50%
U.S. permanent book/tax differences	(12.00%)	(0.10%)	3.10%
Change in valuation allowance for California R&D credit	10.00%	0.80%	(3.40%)
U.S. manufacturing deduction permanent difference	(8.00%)	(3.50%)	5.50%
Goodwill impairment	0.00%	8.90%	(100.10%)
Tax impact of sale of marketing applications business	0.00%	9.90%	0.00%
Impact of excess tax benefits and tax deficiencies	0.00%	2.20%	0.00%
Tax impact of U.S. tax law change - IRC Section 987	0.00%	3.50%	0.00%
Deferred tax impact from U.S. rate change	(27.00%)	0.00%	0.00%
Tax impact of transition Tax- U.S. tax reform	250.00%	0.00%	0.00%
Other, net	(3.50%)	(0.30%)	(3.20%)
Effective income tax rate	215.50%	43.40%	(48.60%)

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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