Annual report pursuant to Section 13 and 15(d)

Estimated Aggregate Future Amortization Expense for Intangible Assets (Detail)

v2.4.1.9
Estimated Aggregate Future Amortization Expense for Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]      
For the year ended December 31, 2015 $ 5,798us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths    
For the year ended December 31, 2016 5,585us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo    
For the year ended December 31, 2017 5,052us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree    
For the year ended December 31, 2018 5,008us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour    
For the year ended December 31, 2019 4,016us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive    
Thereafter 22,231us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive    
Total $ 47,690us-gaap_FiniteLivedIntangibleAssetsNet $ 55,320us-gaap_FiniteLivedIntangibleAssetsNet $ 20,567us-gaap_FiniteLivedIntangibleAssetsNet