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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Tax Contingency [Line Items] |  |  |  |
Deferred taxes and other included a deferred tax benefit | $ 2,700,000 | $ 9,600,000 | $ 15,100,000 |
Other taxes total expense | $ 800,000 | $ 200,000 | $ 3,600,000 |
Federal income tax rate | 35.00% | 35.00% | 35.00% |
Valuation allowances | $ 3,800,000 | $ 3,200,000 |  |
Research and development, tax credit | 1,500,000 | 1,800,000 | $ 3,000,000 |
Unremitted earnings, reinvested | 338,600,000 | 305,600,000 |  |
Deferred tax liability | 0 |  |  |
Gross unrecognized tax benefits | 12,200,000 | $ 14,900,000 | $ 14,900,000 | $ 30,400,000
Unrecognized tax benefits that would impact effective tax rate | 10,800,000 |  |  |
Minimum [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Gross unrecognized tax benefits balance may decrease within the next twelve months | 0 |  |  |
Maximum [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Gross unrecognized tax benefits balance may decrease within the next twelve months | 1,700,000 |  |  |
United States - State [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | 80,900,000 |  |  |
Tax credit carryforwards | $ 400,000 |  |  |
Tax credit carryforwards expiration year | 2016 |  |  |
United States - State [Member] | Minimum [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards expiration year | 2016 |  |  |
United States - State [Member] | Maximum [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards expiration year | 2035 |  |  |
Foreign Tax Authority [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | $ 4,200,000 |  |  |
Net operating loss carryforwards expiration year | 2020 |  |  |
Tax credit carryforwards | $ 2,300,000 |  |  |
Tax credit carryforwards expiration year | 2028 |  |  |

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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Amount of other deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. For example, but not limited to, acquisition-date income tax benefits or expenses recognized from changes in the acquirer's valuation allowance for its previously existing deferred tax assets resulting from a business combination and adjustments to beginning-of-year balance of a valuation allowance because of a change in circumstance causing a change in judgment about the realizability of the related deferred tax asset in future periods. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (g),(h) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6510177 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 + Details
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