XML 31 R79.htm IDEA: XBRL DOCUMENT v2.4.1.9
Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]    
Goodwill $ 21,720us-gaap_Goodwill $ 21,720us-gaap_Goodwill
Amortization of intangible assets $ 769us-gaap_AmortizationOfIntangibleAssets $ 846us-gaap_AmortizationOfIntangibleAssets