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Long-Term Debt - Additional Information (Detail)
 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2013
EUR (€)
Dec. 31, 2012
EUR (€)
Sep. 30, 2012
Revolving Credit Facility [Member]
USD ($)
Jun. 30, 2012
Revolving Credit Facility [Member]
USD ($)
May 31, 2012
Revolving Credit Facility [Member]
USD ($)
Dec. 31, 2013
Revolving Credit Facility [Member]
USD ($)
Dec. 31, 2012
Revolving Credit Facility [Member]
USD ($)
Aug. 30, 2010
Revolving Credit Facility [Member]
USD ($)
Dec. 31, 2013
Revolving Credit Facility [Member]
LIBOR [Member]
Dec. 31, 2012
Revolving Credit Facility [Member]
LIBOR [Member]
Aug. 30, 2010
Term Loan Facility [Member]
USD ($)
May 31, 2012
Term Loan Facility [Member]
USD ($)
Dec. 31, 2013
Term Loan Facility [Member]
USD ($)
Dec. 31, 2012
Term Loan Facility [Member]
USD ($)
Dec. 31, 2013
Term Loan Facility [Member]
Base rate [Member]
Maximum [Member]
Aug. 30, 2010
New Credit Agreement [Member]
USD ($)
Dec. 31, 2013
New Credit Agreement [Member]
LIBOR [Member]
Maximum [Member]
Dec. 31, 2013
New Credit Agreement [Member]
Base rate [Member]
Maximum [Member]
Dec. 31, 2013
Prior Credit Agreement [Member]
LIBOR [Member]
Dec. 31, 2012
Prior Credit Agreement [Member]
LIBOR [Member]
Debt Instrument [Line Items]                                              
Debt instrument term (in years)                 5 years             5 years              
Maximum borrowing capacity $ 8,000,000 $ 7,600,000   € 5,800,000 € 5,800,000           $ 200,000,000                        
Maximum borrowing capacity                           100,000,000                  
Maximum additional borrowing capacity available                                     50,000,000        
Repayment of debt obligation 16,000 188,695,000 7,500,000                       87,500,000 87,500,000              
Repayment of debt obligation           20,000,000 20,000,000 57,500,000 57,500,000                            
Amount outstanding 0 10,000             20,000,000 20,000,000                          
Margin on variable rate                       2.50% 2.50%             3.25% 2.25%    
Variable rate basis                                   LIBOR          
Effective interest rate (as a Percent)                                           2.70% 2.70%
Revolving credit facility due date                 Aug. 30, 2015                            
Amount of restricted net assets 192,000,000 213,400,000                                          
Restricted cash 23,761,000 21,314,000                                          
Debt issuance costs incurred                               5,000,000              
Write-off of debt issue costs                             800,000                
Deferred debt issuance costs, net                               $ 1,100,000 $ 1,800,000