Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Narrative) (Detail)

v2.4.1.9
Intangible Assets (Narrative) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]      
Amortization of intangible assets $ 14,056us-gaap_AmortizationOfIntangibleAssets $ 11,594us-gaap_AmortizationOfIntangibleAssets $ 11,683us-gaap_AmortizationOfIntangibleAssets
Estimated useful life 8 years 2 months 19 days