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Income Taxes - Additional Information (Detail) (USD $) | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended | 24 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2013 State [Member] | Dec. 31, 2013 Foreign [Member] | Dec. 31, 2013 Federal [Member] | Dec. 31, 2013 Federal [Member] American Taxpayer Relief Act [Member] | Dec. 31, 2013 Federal AMT [Member] | Dec. 31, 2013 Switzerland [Member] | Dec. 31, 2012 Switzerland [Member] | Dec. 31, 2011 Switzerland [Member] | Dec. 31, 2013 Minimum [Member] State [Member] | Dec. 31, 2013 Maximum [Member] State [Member] | Dec. 31, 2013 Maximum [Member] Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 35.00% | 35.00% | 35.00% |  |  |  |  |  |  |  |  |  |  |  |
Deferred Tax Assets, Valuation Allowance | $ 38,644,000 | $ 34,347,000 | $ 28,354,000 | $ 26,557,000 |  |  |  |  |  |  |  |  |  |  |
Discrete Tax Benefit related to reversal of uncertain tax positions from expiration of statute of limitations |  |  |  |  |  |  | 39,000,000 |  |  |  |  |  |  |  |
Decrease in balance as a result of a lapse of the applicable statues of limitations | 1,300,000 | 900,000 | 2,100,000 |  |  |  |  |  |  |  |  |  |  |  | 10,000,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense |  | 1,900,000 | 200,000 |  |  |  |  |  |  |  |  |  |  |  |
Income tax benefit from reinstatement of US federal research tax credit | 5,044,000 | 0 | 2,006,000 |  |  |  |  | 2,400,000 |  |  |  |  |  |  |
Operating loss carry forwards |  |  |  |  | 85,300,000 | 96,400,000 |  |  |  |  |  |  |  |  |
Operating loss carryforwards, expiration date |  |  |  |  |  |  |  |  |  |  |  |  | Jan. 01, 2014 | Jan. 01, 2031 |
State net operating loss carry forwards | 8,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax credit carryovers |  |  |  |  | 29,800,000 |  | 5,900,000 |  | 2,700,000 |  |  |  |  |  |
Year that federal tax credits expire |  |  |  |  |  |  | Jan. 01, 2031 |  |  |  |  |  |  |  |
Tax credit expiration |  |  |  |  | will not expire |  |  |  | will not expire |  |  |  |  |  |
Gross unrecognized tax benefits including interest and penalties | 24,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued potential interest related to unrecognized tax benefits | 1,500,000 | 7,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Discrete net tax benefit related to the release of tax reserves | (5,600,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal income taxes not provided on undistributed earnings of non-U.S. subsidiaries | 77,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax savings due to reduction in tax rate |  |  |  |  |  |  |  |  |  | $ 1,500,000 | $ 1,100,000 | $ 700,000 |  |  |
Increase in diluted earnings per share |  |  |  |  |  |  |  |  |  | $ 0.014 | $ 0.009 | $ 0.006 |  |  |
Benefits from a tax ruling |  |  |  |  |  |  |  |  |  | The Company's operations in Switzerland is subject to a reduced tax rate under the Switzerland tax holiday which requires various thresholds of investment and employment in Switzerland. |  |  |  |  |
Additional period for renewal for investment and employment in foreign country |  |  |  |  |  |  |  |  |  | effective through the end of 2018 |  |  |  |  |
More Likely Than Not Threshold Recognition of Uncertain Tax Position | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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