Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Schedule of Expected Annual Amortization Expense for Intangible Assets (Detail)

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Intangible Assets - Schedule of Expected Annual Amortization Expense for Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Amortization expense, 2015 $ 2,910us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Amortization expense, 2016 3,798us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Amortization expense, 2017 3,763us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Amortization expense, 2018 3,254us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Amortization expense, 2019 2,191us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Amortization expense, 2020 and thereafter $ 7,157us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive