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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Intangible Assets [Line Items]      
Goodwill impairment $ 0 $ 0  
Goodwill accumulated impairment loss 0    
Impairment of trade name     $ 2,904,000
Intangible assets, Amortization expense $ 1,300,000 $ 1,300,000 $ 1,400,000
Hub [Member] | Weighted Average [Member]      
Intangible Assets [Line Items]      
Weighted average life of definite lived intangible assets 4 years 5 months 27 days    
Mode [Member] | Weighted Average [Member]      
Intangible Assets [Line Items]      
Weighted average life of definite lived intangible assets 13 years 3 months