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Long-Term Debt - Additional Information (Detail) | 0 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  |
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Oct. 03, 2012 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2013 IKB Loan [Member] Installment | Apr. 11, 2013 IKB Loan [Member] USD ($) | Apr. 11, 2013 IKB Loan [Member] EUR (€) | Dec. 31, 2013 Maximum [Member] | Dec. 31, 2013 Federal Funds Rate [Member] | Dec. 31, 2013 Other Assets [Member] USD ($) | Dec. 31, 2013 5.375% Notes [Member] USD ($) | Dec. 31, 2012 5.375% Notes [Member] | Oct. 03, 2012 5.375% Notes [Member] USD ($) | Dec. 31, 2013 7.125% Notes, Due May 2016 [Member] USD ($) | Dec. 31, 2013 Revolving Credit Facility [Member] | Nov. 21, 2011 Revolving Credit Facility [Member] USD ($) | Dec. 31, 2013 Revolving Credit Facility, Due Nov. 2016 [Member] Minimum [Member] | Dec. 31, 2013 Revolving Credit Facility, Due Nov. 2016 [Member] Maximum [Member] | Dec. 31, 2013 Revolving Credit Facility, Due Nov. 2016 [Member] Daily Euro Rate [Member] Minimum [Member] | Dec. 31, 2013 Revolving Credit Facility, Due Nov. 2016 [Member] Daily Euro Rate [Member] Maximum [Member] | Dec. 31, 2013 Letter of Credit [Member] USD ($) | Dec. 31, 2012 Letter of Credit [Member] USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 350,000,000 |  |  |  |  |  |
Debt instrument maturity date |  |  |  |  |  |  |  |  |  | Oct. 15, 2020 |  |  |  | Nov. 21, 2016 |  |  |  |  |  |  |
Federal fund rate spread |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |  | 0.25% | 1.25% | 1.25% | 2.25% |  |
Margin over Euro-rate |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Leverage ratio |  | 2.2 |  |  |  |  | 3.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  | 57,600,000 | 42,700,000 |  |  |  |  |  | 250,000,000 |  |  |  |  |  |  |  |  |
Percentage of aggregate principal amount of outstanding |  | 5.375% | 5.375% | 2.05% |  |  |  |  |  | 5.375% | 5.375% | 5.375% | 7.125% |  |  |  |  |  |  |  |
Proceeds from note offering, net of original issue discount |  |  | 250,000,000 |  |  |  |  |  |  | 245,100,000 |  |  | 200,000,000 |  |  |  |  |  |  |  |
Redemption rate | 102.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption premium | 4,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Write-off of the related unamortized deferred financing fees | 1,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Frequency of interest payable |  |  |  |  |  |  |  |  |  | Semiannually |  |  |  |  |  |  |  |  |  |  |
Number of installments |  |  |  | 32 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installments beginning date |  |  |  | Jun. 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installments ending date |  |  |  | Mar. 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregated unamortized deferred debt issuance costs |  |  |  |  |  |  |  |  | 6,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Amortization expense related to deferred debt issuance costs |  | 1,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letter of credit outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,200,000 | $ 4,600,000

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