XML 53 R59.htm IDEA: XBRL DOCUMENT v2.4.1.9
Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]    
Aggregate amortization expense related to acquired intangibles $ 1,671us-gaap_AmortizationOfIntangibleAssets $ 410us-gaap_AmortizationOfIntangibleAssets