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Income Taxes - Additional Information (Detail) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |
Ireland's statutory income tax rate | 12.50% | 12.50% | 12.50%
Valuation allowance for deferred tax assets | $ 21,591,000 | $ 18,817,000 | $ 16,445,000
Net change in the total valuation allowance | 2,800,000 | 2,400,000 |
Deferred tax liability unrecognized for the undistributed earnings of foreign subsidiaries | 0 | 0 | 0
Unrecognized tax benefit | 1,200,000 |  |
Total unrecognized tax benefits net of potential benefits | 5,800,000 | 7,200,000 | 6,500,000
Interest and penalties recognized as an expense | 200,000 | 100,000 |
Total accrued interest and penalties | 900,000 | 1,100,000 |
Tax Jurisdiction Description | In the United States tax periods open to audit include the years December 31, 2010, December 31, 2011, December 31, 2012 and December 31, 2013. In Ireland tax periods open to audit include the years ended December 31, 2008, December 31, 2009, December 31, 2010, December 31, 2011, December 31, 2012 and December 31, 2013. During such audits, local tax authorities may challenge the positions taken by us in tax returns. |  |
Foreign Country |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |
Non-U.S subsidiaries Operating loss carry forwards for income tax | 96,200,000 | 94,400,000 |
Additional operating loss carry forward | 5,900,000 |  |
Expiration period | Expire between 2014 and 2016 |  |
Ireland |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |
Ireland's statutory income tax rate | 12.50% |  |
United States |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |
Expiration period | Expire between 2014 and 2032 |  |
U.S. Federal net operating loss carry forwards currently available for offset | 7,600,000 |  |
State net operating loss carry forwards carry forwards currently available for offset | 15,200,000 |  |
Operating Loss Carry forwards Limitation Per Year | 113,000 |  |
Limitation description | Due to a change of ownership in 2000, as defined by Section 382 of the Internal Revenue Code of 1986, as amended |  |
Alternative minimum tax credit carry forwards | 300,000 |  |
Business credit carry forwards that are available to offset | 300,000 |  |
United States | Federal |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |
Additional operating loss carry forward | 8,322,000 |  |
Net operating loss carry forwards remaining | 700,000 |  |
United States | State |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |
Additional operating loss carry forward | 15,898,000 |  |
Net operating loss carry forwards remaining | $ 700,000 |  |

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